JP2000202265A - Stirring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the stirring efficiency of a stirring blade and to make the stirring blade light by weight in a stirring device structured so as to house a object to be stirred, which is formed by incorporating foreign matter having a larger size than that of a granular material or a bulky material thereinto, in a hollow chamber formed in long sideway and to drive and rotate plural stirring blades provided in the hollow chamber. SOLUTION: The stirring blades 20 are attached to a rotary shaft 2 provided coaxially or in parallel to the axis line of the hollow chamber at a prescribe interval and the stirring blades adjacent each other having the tip part of each stirring blade on a spiral line formed with the rotary shaft 2 as the center have prescribed angle shift successively from one side toward another side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for agitating an object to be agitated in a state in which foreign substances such as larger garbage are added to a granular material or a lump, such as a garbage disposal apparatus, in a horizontally long hollow chamber. And a stirrer.

[0002]

2. Description of the Related Art Recently, treatment of organic waste such as garbage has become a social problem, and various apparatuses utilizing the decomposition action of bacteria have been proposed as this treatment technique. This type of equipment is designed to initially grow bacteria by a carrier such as wood chips, rice husks, or ceramic balls, or other small lumps. The group is maintained in an active state, and garbage is introduced into the hollow chamber to be turned into fertilizer by the decomposition action of the bacteria group.

[0003] In order to increase the processing capacity of the bacteria, it is essential to increase the chance of contact between the garbage and the carrier. Therefore, the carrier containing the bacteria and the garbage must be stirred. Must. As this conventional stirring device, as shown in FIG. 5, a hollow chamber having a circular cross section having both sides of a cylindrical portion serving as a processing tank closed and side walls closed.
The rotary shaft (2) is inserted so as to be supported by the center of the side wall of (1), and a plurality of stirring blades (20) are mounted on the rotary shaft (2) in the radial direction of rotation. Each of the stirring blades (20) is formed by twisting a rod-like body having a uniform cross section such as a rectangular cross section from its base end to its tip as shown in FIG.

According to this stirring device, when the rotary shaft (2) is driven to rotate, each stirring blade (20) passes through the object to be stirred consisting of the carrier and the garbage, whereby each stirring blade is rotated. The vicinity of the passage area of the stirring blade (20) is stirred according to the twist of the blade (20). However, in this conventional product, the stirring efficiency is insufficient, and in order to improve the stirring efficiency by each stirring blade (20), the stirring blade (20) is enlarged and the twist of each stirring blade (20) is increased. It is necessary to increase the load, and in this case, the load acting on the stirring blade (20) during rotation increases. Therefore, in this case, it is necessary to sufficiently increase the strength (rigidity) of the stirring blade (20), and the stirring blade (20) becomes heavy.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has been made in consideration of the following problem. "A hollow chamber (1. ), And a plurality of stirring blades (20) (20) provided in the hollow chamber (1) are configured to rotate and drive the stirring blades (20) (20). In addition to the improvement, the weight of the stirring blade (20) is planned. * 1

[0006]

Means for Solving the Problems To solve the above-mentioned problems, the solution of the present invention is described as follows. "The stirring blade (20) is provided with a rotating shaft provided coaxially or parallel to the axis of the hollow chamber (1). The stirring blades are attached to the shaft (2) at predetermined intervals and in the radial direction of rotation, and the stirring blades adjacent to each other such that the tip of the stirring blade is located on a spiral line centered on the rotation shaft are connected to the rotation shaft ( 2) The configuration is such that a predetermined angle shift is sequentially made from one side to the other side ”.

The above solution works as follows. The stirring blade (20) may only extend in the radial direction from the rotating shaft (2), and it is not necessary to provide a twist. A configuration having twist may be used, but the degree of twist may be small. The stirring blades (20) are arranged at a predetermined interval from one of the rotating shafts (2) to the other such that the leading ends of the stirring blades (20) are located on a spiral line (see L in FIG. 2) about the rotating shaft (2). Has been
When a group of stirring blades (20) (20) rotates in the object to be stirred, they act like a feed screw in the object to be stirred.
As a result, the objects to be stirred in the upper part and near the center of the swirling area of the stirring blades (20) (20) are directed in the direction (rotation axis ( 2) in the direction from one of the axes to the other), and in the lower part of the turning area and below it, in the direction opposite to the above direction. This movement circulates, and the object to be stirred is agitated by the stirring action by this circulation and the stirring action by each of the stirring blades (20) passing through the inside of the object to be stirred.

[0008]

According to the present invention having the above configuration, the following specific effects are obtained. The object to be stirred is stirred by the stirring action by the above-mentioned circulating movement in the hollow chamber (1) and the stirring action by passing through the stirring blade (20), so that the stirring efficiency is improved as compared with the conventional one.

Further, since it is not necessary to increase the stirring efficiency due to the passage of the stirring blade (20) through the object to be stirred, the movement resistance when the stirring blade (20) passes through the object to be stirred is the same as the conventional one. It can be reduced compared to. Therefore, the weight of the stirring blade (20) can be reduced. Therefore, energy consumption for driving the entire stirrer can be reduced. * Item 2 In the item 1, the "the stirring blade (20) is the rotating shaft (2)
At the tip of the arm (21) extending in the radial direction, a rectangular stirring plate (22) orthogonal to the arm (21), and a bar-shaped stirring bar (23) in the middle, each of which is provided with a configuration ``. At the time of rotation of the stirring blade (20), a large turbulence is caused in the passage area of the stirring object by the stirring plate (22), and a relatively small disturbance is caused in the passage area of the stirring rod (23). Let it. Therefore, the above-mentioned circulating movement is likely to occur in the object to be stirred, and the stirring effect by only passing through the stirring blade (20) is improved as compared with the case where the stirring blade (20) is a simple rod.

In the case where the stirring target is a mixture of wood or other chips mixed with room temperature aerobic bacteria and garbage added thereto, the length of the arm (21) is set to a predetermined value to stir. The edge of the plate (22) rotates along the vicinity of the inner wall of the hollow chamber (1), and the chip or the like containing the normal temperature aerobic bacteria group stays at a certain position on the inner wall of the hollow chamber (1). In addition, the inconvenience caused by excessive breeding can be reduced, and the stirring rod (23) tends to shear the object to be stirred, so that the stirring efficiency is improved by cooperation with the stirring plate (22). * 3. In the above item 1 or 2, the term “end blades extending along the side wall (11) of the hollow chamber (1) at both ends of the rotary shaft (2) in the hollow chamber (1)” is used. 24), and the end blades (24) are inclined so as to gradually separate from the base side toward the front side with respect to the side wall (11), and have a cross section on the front side with respect to the rotation direction. The shape is a cross-sectional shape in which the inner end is inclined rearward in the direction of rotation with respect to the side wall side end. ''), The rotation of the end blades (24) causes the stirring object to be constantly in the side wall ( Since it is separated from 11), the disadvantage that the stirring symmetry adheres to the side wall (11) due to the pressure toward the side wall (11) during stirring is less likely to occur. * 4. In the above-mentioned item 1, 2, or 3, which is "provided with a rotation inversion means for inverting the rotation direction of the rotation shaft at a predetermined timing", bacteria groups are mixed into chips such as wood. When stirring the stirring target into which garbage is added,
The object to be stirred is likely to move even under conditions in which the axial movement of the hollow chamber (1) is difficult to occur due to the plurality of stirring blades (20), (20), and the stirring efficiency is improved even under such conditions. I do.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on examples shown in FIGS. In this embodiment, a stirrer used in a garbage disposal apparatus is used. This garbage disposal device has a casing (K)
A hollow chamber (1), in which both ends of a cylinder are closed by side walls (11) and (11), is used as a garbage disposal tank.
The rotating shaft (2) is inserted so as to match the axis of (1). A plurality of stirring blades (20) and end blades (24), which will be described later, are attached to the rotating shaft (2), and one of the side walls (1).
The shaft end that penetrates and protrudes from 1) is configured to be rotationally driven by a drive motor (4) provided at the bottom in the casing (K).

In the hollow chamber (1), a predetermined amount of a group of room temperature aerobic bacteria and a chip of wood or the like as a carrier (T) thereof are previously charged. Oxygen is required for its survival and decomposition of organic emissions. For this reason, air required for the decomposition treatment by bacteria is sent from the blower (5) to the vicinity of one side wall (11) of the hollow chamber (1) through the air supply pipe (51), and the other side wall (11) , Heat and excess air generated by the decomposition treatment, and carbon dioxide gas and moisture generated as a result of the decomposition are discharged from the exhaust pipe (52) provided in the vicinity.

The hollow chamber (1) is provided with an input port (12) for inputting the carrier (T) and garbage, and the casing (K) is provided with the input port (12). An openable lid plate (13) for closing the door is provided. The stirring blade (20) is
As shown in FIG. 2, four rotary shafts (2) are provided at positions except for both ends where the length of the rotary shaft (2) is approximately equal to five. Each stirring blade
(20) is a flat plate-like arm (21) along the rotation direction, a rectangular stirring plate (22) attached to the tip end thereof, and the arm
And a stirring bar (23) mounted at right angles to (21).

The arm (21) is configured so that the width in the rotation direction increases from the distal end of the rotation shaft (2) toward the mounting portion on the base end side, and the arm (21) is positioned forward in the rotation direction. Each of the stirring plate (22) and the stirring rod (23) is fixed so as to be symmetric about the arm (21). The stirring blade (2
Regarding (0) and (20), the stirring blades (20) adjacent to each other from the left side to the right side in FIG. 2 are attached to the rotating shaft (2) so as to have a 90 degree angle shift as shown in FIG. Have been. In this example, the driving direction of the driving motor (4) is set so as to rotate clockwise in FIG. 3, and the stirring plate (22) and the stirring rod (23) are moved with respect to the arm (21). It is located forward in the direction of rotation. Thereby, the tip of the stirring plate (22) is located on the spiral line (L).

The end blades (24) are provided at both ends of the rotating shaft (2) so as to rotate near the side wall (11). In this example, a pair of the rotating blades (24) is provided with respect to the rotating shaft (2). End blade (24) End blade
(24) is provided symmetrically. The cross-section of the end blade (24) is formed in an isosceles triangular cross-section as shown in the partial cross-sectional view of FIG. 2, and the top is located inside (the side opposite to the side wall (11)). . The end blade (24) extends from the base end toward the front end with respect to the rotation axis (2).
It is mounted in an inclined position so as to gradually separate from (11).

The lengths of the stirring blade (20) and the end blade (24) are set slightly shorter than the radius of the rotating shaft (2). In this example, a group of bacteria is introduced into the hollow chamber (1) together with the above-mentioned wood chips, rice hulls, or a carrier (T) as a small lump such as a ceramic ball, and initially multiplied. Then, the storage amount of the carrier is set to about the middle of the stirring blade (20) in the upward position.

In this state, when the drive motor (4) is driven to rotate the stirring blades (20) and (20), the plurality of stirring blades (20) and (20) rotate about the rotation shaft (2). As shown in FIG. 2, the upper part of the storage area of the carrier (T), that is, the upper layer part including a certain range from the vicinity of the rotation axis (2), as shown in FIG. Move from left to right in the diagram,
When the stirring blade (20) is rotated downward, a movement that returns from the right to the left in the drawing occurs in the distal end portion of the arm (21) and the lower region thereof. In this way, by rotating the stirring blades (20), (20), a movement circulating in the path indicated by the arrow from the arrow in the drawing occurs in the hollow chamber (1), and the stirring action of each rotating blade (20) is performed. In addition to the above, a stirring action by the circulation occurs. In addition, each stirring blade (20) is a stirring object composed of the carrier (T) in which a stirring plate (22) and a stirring rod (23) are stored, and organic waste such as garbage charged into these carriers. Since the rotation is performed in such a manner as to be separated from each other, the stirring target is also stirred by the operation itself.

When the water to be stirred is large, the side wall
(11), but in this example, the end blade (24)
Are located at both ends of the rotating shaft (2), and since the cross section of the end blade (24) is an isosceles triangle with the inside being the top, the rotation of the end blade (24) causes the vicinity of the side wall (11) to close. The object to be stirred comes into contact with a slope inclined inward with respect to the direction of rotation.
A component force in the direction away from 1) acts. Therefore, the side wall
The carrier (T) or garbage in the vicinity of (11) is separated from the side wall (11) and moved inward.

In a configuration in which the rotation direction of the rotating shaft (2) is reversed at a predetermined timing, the path indicated by the arrow and the path indicated by the arrow are reversed by a predetermined rotation, so that the hollow chamber (1) is rotated. Is further promoted, and the stirring efficiency is improved. When the above-described stirring operation is performed, the organic exhaust such as garbage is decomposed by the group of room temperature aerobic bacteria contained together with the carrier (T). For this purpose, air for the decomposition treatment of the bacteria is required, and the air for this is supplied from the blower (5) into the hollow chamber (1) via the air supply pipe (51). You. Then, the surplus air is discharged from the exhaust pipe (52).

If the garbage is treated with the aerobic bacteria at room temperature while stirring as described above, a large amount of carbon dioxide gas is hardly released as in the case of treating exhaust gas by incineration. There is no odor emission as in the case of treatment. Furthermore, since it is a decomposition treatment by bacteria, the garbage treatment apparatus of the above embodiment is much superior in that almost no products are generated after the decomposition treatment such as when converting organic waste into fertilizer. Becomes

The rotating shaft (2) may be positioned parallel to the center axis of the middle and empty space (1). It goes without saying that the stirring device of the present invention can be used as various stirring devices other than the garbage disposal device. Further, the number of the rotating blades (20) attached to the rotating shaft (2) may be larger or smaller than in the case of the above embodiment.

In the above embodiment, the drive motor (4) is configured to rotate in the same direction. However, the drive motor (4) is a reversible drive motor that rotates forward and backward at a predetermined timing, and the timing of rotation inversion is controlled by an inversion timer. You may make it. This inversion timer corresponds to the rotation inversion means in the above item 4.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a garbage processing apparatus according to an embodiment of the present invention.

FIG. 2 is a sectional view of the same.

FIG. 3 is a sectional view taken along the line III-III of FIG. 2, and is an explanatory view showing a relative relationship of a stirring blade (20).

FIG. 4 is a sectional view taken along the line IV-IV of FIG. 1;

FIG. 5 is an explanatory view of a conventional example.

FIG. 6 is an explanatory view of a main part of the rotary blade (20).

[Explanation of symbols]

(1): hollow chamber, (11): side wall, (2): rotating shaft, (20): stirring blade, (21): arm, (22): stirring plate, (23): stirring rod, (24) :
End blades, (5): blower, (51): air supply pipe (52): exhaust pipe, (4): drive motor, (T): carrier (the same reference numerals in each drawing indicate the same or corresponding parts. )

Continued on the front page (72) Inventor Morihiko Yamaguchi 2218-7 Ohno, Kagawa-cho, Kagawa-gun, Kagawa Prefecture F-term in Yamaguchi Giken Co., Ltd. 4G078 AA02 AA18 AB05 BA01 DA03 DA28

Claims (4)

[Claims] An agitating apparatus having a configuration in which a stirring target mainly composed of a granular substance or a lump is accommodated in a horizontally long hollow chamber, and a plurality of stirring blades provided in the hollow chamber are driven to rotate. The stirring blade is attached to a rotating shaft provided coaxially or parallel to the axis of the hollow chamber at a predetermined interval and in a radial direction of rotation, and a tip end of the stirring blade is on a helical line centered on the rotating shaft. The agitating device has a configuration in which adjacent agitating blades have a predetermined angular shift from one of the rotating shafts to the other in order so as to be positioned at a predetermined position. 2. The stirrer according to claim 1, wherein the stirrer blade has a rectangular stirrer plate orthogonal to the tip end of an arm extending radially from a rotation axis, and a rod-like stirrer rod in the middle. A stirrer having a different configuration. 3. The hollow chamber according to claim 1, wherein both ends of the rotating shaft in the hollow chamber are provided with end blades extending along a side wall of the hollow chamber. In addition to being inclined so as to gradually separate from the base end side toward the distal end side, the cross-sectional shape of the front side with respect to the rotation direction is such that the inner side with respect to the side wall side is directed rearward in the rotation direction. A stirrer having a cross-sectional shape in an inclined aspect. 4. The stirring device according to claim 1, further comprising a rotation reversing means for reversing the rotation direction of the rotating shaft at a predetermined timing.