JPH11347517A - Apparatus of agitating perishable waste - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an agitator which can mix perishable waste with calcinated lime uniformly in a short time to attain the miniaturization of an apparatus and the reduction of costs. SOLUTION: A reaction drum 10 in which a circumferential wall bottom part 11 is formed semi-cylindrically and both side upper part walls 13 are formed by two-way contraction walls which are slanted inward by 20-60 degree from a vertical line to form an inverted V shaped cross section is provide. Agitation paddles 21a and 21b are fitted to the rotary shaft 20 of the drum 10 to be separated in the axial direction and the rotation direction. The blade action surfaces 24 of the paddles 21a, 21b are slanted by 30-60 degree toward the inside in the diameter direction to the rotational direction, and the action surfaces is arranged to be slanted by 20-40 degree toward the middle in the axial direction of the drum 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a putrefactive waste stirring apparatus for stirring and mixing quicklime with putrefactive waste such as livestock manure and marine waste.

[0002]

2. Description of the Related Art Techniques for utilizing putrefactive wastes such as livestock manure and marine wastes as fertilizers are well known. However, when putrefactive wastes are used as fertilizers, as a pretreatment, quicklime is added to putrefactive wastes. It is customary to add and mix (calcium oxide), quickly prevent the putrefactive waste from changing and spoiling by a chemical reaction, and carry out deodorization and sterilization.

[0003] When adding quick lime to the putrefactive waste and mixing it, if the mixing takes time or if the quick lime cannot be mixed uniformly over the entire putrefactive waste,
Gypsum is formed by coagulation, the reaction does not proceed sufficiently, it causes deterioration and rot, which may cause foul odors, flies and maggots. There is.

[0004] Under such circumstances, conventionally, as a device for stirring and mixing quicklime with putrefactive waste, for example, a stirring device disclosed in JP-B-61-21720 and JP-B-7-88267 is well known. It is.

In the former stirring device disclosed in Japanese Patent Publication No. 61-21720, a plurality of rotatable band-shaped stirring blades are provided in a processing drum, and the processing drum is rotated by rotating the stirring blade. It is agitated and mixed so as to form a spattering flow peculiar to the putrefactive waste in the inside.

Further, in the latter stirring device disclosed in Japanese Patent Publication No. Hei 7-88267, a plurality of spoon-shaped stirring blades are provided in a processing drum, and the blades are rotated forward to rotate the spoilage in the processing drum. By stirring the waste while moving it in one direction, rotating the blade in the reverse direction and stirring while moving the perishable waste in the other direction, the quicklime is uniformly stirred and mixed throughout the perishable waste. It is like that.

[0007]

However, since the former stirring device mixes putrefactive waste and quicklime with a strip-shaped stirring blade, for example, as a putrefactive waste, the water content is reduced. When using low, highly viscous ones, it is possible to mix well if it takes a certain amount of time.However, when using high-moisture, low-viscosity septic wastes, However, the stirring power does not work effectively, and it is difficult to obtain the desired stirring and mixing performance. In this regard, there is room for improvement.

[0008] On the other hand, the latter stirring device is a device for rotating and stirring the spoon-shaped stirring blade in the normal and reverse directions, so that the mixing performance between the normal rotation and the reverse rotation is greatly different. The stirring performance at the time of reverse rotation is greatly reduced as compared to the time of normal rotation, and a bias such that a part is not stirred occurs, causing a problem that quicklime cannot be uniformly mixed over the entire perishable waste. .

Further, in the latter stirring device, since a spoon-shaped stirring blade having a large flow resistance during stirring is used, for example, putrefactive waste having a low water content and a high viscosity is stirred. In this case, a large load is applied to the stirring blade, and the stirring blade cannot be rotated smoothly, and the stirring process itself may not be performed. If a large motor capable of generating a high torque is used as a motor for rotating the blade in order to rotate the stirring blade smoothly, another problem occurs in that the size of the apparatus is increased and the cost is increased.

[0010] The present invention solves the above-mentioned problems of the prior art, and makes it possible to uniformly mix quicklime with putrefactive waste over a short period of time while reducing the size and cost of the apparatus. It is an object of the present invention to provide an apparatus for agitating and treating putrefactive waste.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a method for producing spoilage waste such as livestock industry waste.
It is a stirring treatment apparatus for putrefactive waste for stirring and mixing with quick lime as a reaction additive, and has a workpiece inlet and an additive inlet on an upper surface wall and a mixture outlet at a lower end. A reaction drum arranged with the central axis horizontal, wherein the reaction drum is formed in a semi-cylindrical shape with a semicircular cross section at a peripheral wall bottom located below the central axis. The upper walls on both sides, which are located above the center axis line, are inwardly 20 to 6 with respect to the vertical line.
A rotary shaft is formed along the central axis of the reaction drum, formed by a two-way throttle wall having a C-shaped cross section inclined at 0 degrees, and a plurality of agitators separated from the rotary shaft in the rotational direction and the axial direction. A paddle is attached, and each of the stirring paddles has a rod-shaped shaft whose base end is fixed to the rotating shaft, and a flat plate fixed to the tip of the rod-shaped shaft in a manner close to the inner surface of the bottom of the peripheral wall. A stirring blade, wherein the stirring blade is inclined at an angle of 30 to 60 degrees radially inward with respect to the rotation direction with respect to the rotation direction, and the axis of the reaction drum with respect to the rotation direction with respect to the rotation direction. The gist of the present invention is arranged such that it is arranged to be inclined at 20 to 40 degrees toward the center in the direction.

In the stirring processing apparatus of the present invention, since the working surface of each stirring paddle is inclined toward the center in the axial direction of the reaction drum, the rotation of the stirring paddle causes
The object to be processed is agitated so as to be approached from both sides toward the center in the axial direction of the reaction drum.

In addition, since each stirring paddle has its working surface inclined inward in the radial direction with respect to the rotation direction, the upper wall on both sides of the reaction drum is constituted by a two-way throttle wall inclined inward. Due to the rotation of the stirring paddle, the object to be treated on the lower layer is swept up to above the reaction drum along the inner surface of the bottom of the peripheral wall, and then guided to the inner surfaces of the upper walls on both sides to be inverted, and the object to be treated on the upper layer is reversed. Mixed into things. In this way, the object to be processed can be stirred so as to approach the center of the drum while being stirred from the lower layer side to the upper layer side while plowing, so that the object to be processed is agitated in a well-balanced manner over the entire area in the reaction drum. be able to.

Further, since the stirring apparatus of the present invention stirs with the blades of the stirring paddle, even if the object to be treated has a high water content and a low viscosity, it can be easily used. Stir and mix.

Further, since the stirring processing apparatus of the present invention rotates the stirring paddle having the blades, the stirring processing apparatus can rotate the stirring paddle with a spoon-shaped stirring blade or the like, for example.
Even when the rotting waste having a low flow resistance and a low water content and a high viscosity is stirred, a large load is not applied to the paddle, and the stirring paddle can be smoothly rotated. Therefore, it is not necessary to use a large motor capable of generating high torque as the paddle rotation motor, and a small motor can be used.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a side view showing a putrefactive waste stirring apparatus according to an embodiment of the present invention, and FIG. 2 is a front view. In the following embodiments, the left side will be referred to as “front” and the right side will be referred to as “rearward” in FIG. 1 to facilitate understanding of the invention.

As shown in both figures, this apparatus has a base frame (1), on which a substantially cylindrical reaction drum (10) has its central axis horizontal. Attached to.

Inside the reaction drum (10), a rotating shaft (20) is arranged on the center axis, and both ends of the rotating shaft (20) penetrate through the front and rear side walls of the drum (10). Are rotatably supported by a shaft support member (2) fixed to the base frame (1).

As shown in FIG. 3, the reaction drum (10)
Is located at the bottom of the peripheral wall (1
1) is formed in a semi-cylindrical shape having an arc cross section. In the center of the lower end of the peripheral wall bottom (11), the mixture outlet (1)
1a), and a damper (31) that can be opened and closed is provided at an outlet (11a) of the reaction drum (1) by opening the damper (31).
The mixture inside 0) is configured to be discharged from the mixture outlet (11a) to the storage tank (5).

The bottom (1) of the peripheral wall of the reaction drum (10)
At the upper ends on both sides of 1), both side intermediate walls (12) and (12) are provided so as to rise vertically, and the upper ends of the both side intermediate walls (12) and (12) are inclined inwardly toward each other. Upper side walls (13) and (13) on both sides are provided, which are formed by two-way diaphragm walls having a C-shaped cross section.

Here, in the present embodiment, the inclination angle (θ1) of the upper walls (13) on both sides with respect to a vertical line is set to 35 degrees. In the present invention, the inclination angle (θ1) needs to be set to 20 to 60 degrees.
Preferably, the lower limit is set to 25 degrees or more and the upper limit is set to 45 degrees or less. That is, when the inclination angle (θ1) is too small or too large, there is a possibility that the putrefactive waste cannot be sufficiently stirred, as described later.

An upper wall (14) is provided between the upper ends of both upper walls (13) and (13) of the reaction drum (10) so as to close the upper ends.

As shown in FIGS. 1 and 2, the upper wall (14) is provided with a workpiece inlet (14a) and an additive inlet (14b). An end of a waste pressure feeding hose (6) is connected to the processed material inlet (14) of the upper wall (14), and putrefactive waste stored in a waste tank (not shown) is fed to a pressure feeding pump. Thus, it is configured to be charged into the reaction drum (10) via the hose (6). Further, the additive inlet (14) in the upper wall (14) is provided.
In (b), a weighing hopper (33) is mounted via a damper (32) which can be automatically opened and closed, and a conveyer (34) for transporting an additive is provided above the hopper (33).
Are disposed. Then, a predetermined amount of additive such as quicklime stored in the hopper (33) by the conveyor (34) is charged into the reaction drum (10) by opening the damper (32). .

On the ceiling wall (14), a deodorizing exhaust device (35) for deodorizing and exhausting the air in the reaction drum (10) is provided.

As shown in FIGS. 3 to 7, a plurality of stirring paddles (21a) (2) are arranged in the reaction drum (10).
1b) has a rod-shaped shaft part (22) and a flat stirring blade (23) provided at the tip of the rod-shaped shaft part (22).

The stirring blade (23) is formed in a substantially trapezoidal shape, and is a circle having a large radius of localization so that the outer edge (23a) can be arranged close to the inner surface of the peripheral wall bottom (11). It is formed in an arc shape. The inner edge side of the stirring blade plate (23) is fixed to the tip of the rod-shaped shaft portion (22) at an inclination angle as described later in detail.

The six stirring paddles (21) having the above structure are
The outer edge (23a) of the blade (23) is the reaction drum (10).
Of the rotating shaft (2) so as to be close to the inner surface of the bottom wall (11) of the peripheral wall and to allow each rod-shaped shaft (22) to extend along the radial direction.
At 0), it is fixed in a state of being separated in the axial direction and the rotational direction. Specifically, three stirring paddles (2) are provided on the front side (left side in FIG. 1) with respect to the center in the axial direction of the rotating shaft (20).
1a), while leaving a predetermined interval in the axial direction, the adjacent stirring paddles (21a) are shifted at an angle of 120 degrees in the circumferential direction, and the base end of the rod-shaped shaft portion (22) is rotated by the rotation shaft ( 20). Further behind (right side in FIG. 1)
In the above, three stirring paddles (21b) are arranged at predetermined intervals in the axial direction while adjacent stirring paddles (21b).
b), the base end of the rod-shaped shaft portion (22) is fixed to the rotating shaft (20) such that the angle is shifted by 120 degrees in the circumferential direction. At this time, a stirring paddle (21a) group on the front side,
The rear side stirring paddle (21b) group is arranged with a phase shift of 60 degrees in the circumferential direction.

Here, in the present embodiment, FIG.
As shown in (2), the inclination angle (θ2) of the slats (23) in the stirring paddles (21a) (21b) inward in the radial direction.
Is adjusted to 45 degrees, so that the blade working surface (2
The direction (FD) facing 4) is inclined 45 degrees toward the radially inner side (DD) with respect to the rotation direction (RD) of the rotating shaft (20).

As shown in FIG. 5, the angle of inclination (.theta.3) of the working surface (24) of the front stirring paddle (21a) inward in the axial direction is adjusted to 30 degrees. ) Is arranged such that the direction (FD) in which the working surface (24) faces is inclined by 30 degrees toward the axial inside (P) of the reaction drum (10) with respect to the rotation direction (RD). ing. Similarly, also in the rear stirring paddle (21b), the inclination angle (θ4) of the blade action surface (24) toward the inside in the axial direction is adjusted to 30 degrees.

In the present invention, the angle of inclination (θ2) of the blade plate (23) inward in the radial direction must be adjusted to 30 to 60 degrees, and preferably the lower limit is 35 degrees or more.
The upper limit is preferably adjusted to 55 degrees or less. That is, if the inclination angle is too small or too large, there is a possibility that the stirring up of the putrefactive waste cannot be sufficiently performed as described later.

Further, the angle of inclination (θ3) (θ4) of the blade plate (23) inward in the axial direction must be adjusted to 20 to 40 degrees, and preferably, the lower limit is 25 degrees or more and the upper limit is 35 degrees. It is better to adjust to less than degree. That is, if the inclination angles (θ3) and (θ4) are too small or too large, there is a possibility that the putrefactive waste is not sufficiently brought into the center and stirred as described later.

On the other hand, as shown in FIG. 2, in the stirring apparatus of this embodiment, a drive motor (6) is arranged alongside the reaction drum (10), and the drive shaft of the motor (6) One end of a rotating shaft (20) of the drum (10) is connected via a power transmission mechanism. When the motor (6) is driven to rotate, the rotating shaft (20) rotates together with the stirring paddles (21a) (21b) in a counterclockwise direction toward the plane of FIG.

In the agitating apparatus of this embodiment, the control for controlling the driving of each driving means such as the motor (6), the dampers (31) and (32), and the additive conveying conveyor (34). The control means operates in response to an operator's operation start command, and receives information from a built-in timer in addition to detection means such as a weighing hopper (33) and a sensor for detecting an input amount of an object to be processed. Based on the above, the driving of each of the driving means is controlled, and as described below, the stirring and mixing process of putrefactive waste such as livestock manure and marine waste and quicklime is automatically performed. .

First, putrefactive waste water-adjusted as required is supplied to the reaction drum (1) from the treatment object inlet (14a).
A predetermined amount is put into 0).

Next, the deodorizing exhaust device (35) is driven, and the motor (6) is driven to drive the stirring paddle (21a).
(21b) rotates.

Subsequently, after a lapse of a few seconds from the rotation of the paddles (21a) and (21b), the weighing hopper (33)
The damper (32) is opened, a predetermined amount of additive (quick lime) is added to the spoilage waste in the reaction drum (10), and then the damper (32) is closed.

[0037] The quicklime is thus added into the reaction drum (10) and stirred and mixed with the perishable waste. At this time, in the present embodiment, each paddle (21a) (21
b) attaches its blade working surface (24) to the reaction drum (1).
Since the paddles (21a) and (21b) are rotated by 30 degrees toward the center of the axis of 0), the object to be treated (septic waste) reacts as shown by an arrow P in FIG. The drum (10) is agitated and mixed so as to be drawn from both sides toward the center in the axial direction.

Moreover, each paddle (21a) (21b)
Is to incline the blade working surface (24) inward in the radial direction by 45 degrees with respect to the rotation direction, and to make the reaction drum (10)
Since the upper walls (13) and (13) on both sides are inclined 35 degrees inward, the wing plates (2
According to 3), the object to be processed on the lower layer side is formed at the peripheral wall bottom (11).
After being lifted up to above the reaction drum (10) along the inner surface of the substrate, it is guided to the inner surfaces of the upper walls (13) and (13) on both sides to be inverted and mixed into the object to be processed on the upper layer side. In this way, the object to be processed can be stirred so as to approach the center of the drum while being stirred from the lower layer side to the upper layer side while plowing, so that the object to be processed can be balanced all over the reaction drum (10). Good stirring can be achieved, and the additive can be evenly mixed in a short time over the entire object.

After the completion of the stirring and mixing (after a predetermined time has elapsed), the damper (21) of the mixture outlet (11a)
Is opened and the mixture in the drum (10) is stored in the storage tank (5).
The motor (6) and the deodorizing exhaust device (3
The driving such as 5) is stopped, and the stirring and mixing process is completed.

The mixture stored in the storage tank (5) is sent to the next step such as a drying process.

As described above, according to the stirring processing apparatus of the present embodiment, the object to be processed can be stirred so as to be brought to the center of the drum while being stirred from the lower layer side to the upper layer side. The object to be processed can be efficiently stirred, and the additive can be uniformly mixed over the entire area of the object to be processed in a short time.

Further, since the stirring apparatus of the present embodiment is an apparatus which stirs with paddles (21a) and (21b), an object having a high water content and a low viscosity is used as an object to be processed. Can also be sufficiently stirred and mixed.

Further, in the present embodiment, the stirring is performed by rotating the flat blade plate (23) inclined with respect to the rotation direction. Even when the rotting waste having a low flow resistance and a low water content and a high viscosity is stirred, a large load is not applied to the paddles (21a) and (21b), and the paddles (21a) (21a) ( 21b) can be smoothly rotated. Therefore, it is not necessary to use a large motor capable of generating a high torque as the motor for rotating the paddle, and a small motor can be used, so that it is possible to reduce the size and cost of the apparatus.

[0044]

As described above, according to the putrid waste agitating apparatus of the present invention, the upper walls on both sides of the reaction drum are separated by two.
On the other hand, the rotary shaft of the reaction drum
A plurality of stirring paddles having blade plates are fixed, and the blade plates of each huddle are tilted radially inward with respect to the rotation direction, and are tilted at the axial center of the reaction drum with respect to the rotation direction. By rotating, the object to be processed can be stirred so as to be brought in from both sides toward the center in the axial direction of the reaction drum, and the object to be processed on the lower layer is scraped up to an upper part along the inner surface at the bottom of the peripheral wall of the reaction drum. It can be turned over by the inner surfaces of the upper walls on both sides and mixed into the upper-layer workpiece. In this way, the object to be treated is
It is possible to stir the mixture to the center of the drum while stirring it from the lower side to the upper side while plowing, so that the object to be processed can be stirred evenly and evenly over the entire area of the reaction drum, and the additive It can be evenly mixed with the whole object in a short time. Moreover, regardless of the moisture content and viscosity of the object to be processed, the stirring can be performed efficiently, so that there is no need to use a large motor with a high torque, etc.
This has the effect of reducing the size and cost of the device.

[Brief description of the drawings]

FIG. 1 is a side view showing an apparatus for stirring and treating putrefactive waste according to an embodiment of the present invention.

FIG. 2 is a front view showing the stirring processing device of the embodiment.

FIG. 3 is a front sectional view showing a reaction drum in the stirring processing device of the embodiment.

FIG. 4A is a side sectional view showing the reaction drum of the embodiment, and FIG. 4B is a front view showing a rotation position of each stirring paddle.

FIG. 5 is a horizontal sectional view showing the reaction drum of the embodiment in a state where each stirring paddle is arranged at a lower end position.

FIG. 6 is a view showing the stirring paddle of the embodiment,
(A) is a side view, (b) is a front view, (c) of FIG.
Is a rear view, and FIG. 3D is a plan view.

FIG. 7 is a front view showing a blade plate of the stirring paddle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Reaction drum 11 ... Peripheral wall bottom part 11a ... Mixture take-out port 13 ... Both upper side walls 14 ... Top wall 14a ... Processing object inlet 14b ... Additive inlet 20 ... Rotating shaft 21a, 21b ... Stirring paddle 22 ... Rod-shaped shaft part Reference numeral 23: stirring blade 24: working surface θ1: upper wall inclination angle on both sides θ2: inclination angle of the blade plate inward in the radial direction θ3, θ4: inclination angle of the blade plate inward in the axial direction

Claims (1)

[Claims] An agitation processing apparatus for a putrefactive waste for stirring and mixing a putrefactive waste such as a livestock industry waste with quicklime as a reaction additive, comprising: With an additive input port, having a mixture outlet at the lower end, comprising a reaction drum arranged with the central axis horizontal, the reaction drum has a peripheral wall bottom located below the central axis. , Formed in a semi-cylindrical shape having a semi-circular cross-section, with upper walls on both sides located above the horizontal center axis inclined at 20 to 60 degrees inward with respect to the vertical line. A rotating shaft is provided along the central axis of the reaction drum, and a plurality of stirring paddles are attached to the rotating shaft so as to be spaced apart in the rotation direction and the axial direction. Is the base end A rod-shaped shaft portion fixed to the transfer shaft, and a flat stirring blade plate fixed to the tip of the rod-shaped shaft portion in a manner close to the inner surface of the peripheral wall bottom portion, wherein the stirring blade plate is The working surface is inclined 30 to 60 degrees radially inward with respect to the rotation direction, and the working surface is inclined 20 to 40 degrees toward the axial center of the reaction drum with respect to the rotation direction. An agitation processing apparatus for putrefactive waste, which is characterized by being processed.