JP4624218B2 - Stirrer - Google Patents

Description

  The present invention relates to an organic waste stirring apparatus.

Conventionally, as an organic waste processing plant, for example, a plant for producing compost by fermenting chicken manure and the like has been provided. In this type of plant, for example, a processing tank for storing organic waste is provided, and the organic waste stored by a stirring device that self-runs on the processing tank is stirred. .
JP 2001-47013 A

  By the way, as an example of the nail | claw part (stirring nail | claw) in the above conventional stirring apparatuses, it is a T-shaped thing like FIG. 9 in patent document 1, or a substantially L shape like FIG. Things are being considered. However, the nail in the former form has a problem that it is difficult to apply a large force to the lump of organic waste and the pulverization property tends to be insufficient. Moreover, the latter substantially L-shaped configuration has a problem that the direction of rotation is determined in one direction. If the rotational direction is determined in one direction as described above, the forward and reverse rotation cannot be performed freely, and thus restrictions on movement and stirring are imposed. For example, it is difficult to uniformly stir in the treatment tank as a whole, which is disadvantageous when a large amount of raw material is charged at one time.

  The present invention has been completed based on the above circumstances, and can pulverize organic waste well, and can move and stir organic waste with a high degree of freedom. The purpose is to provide a configuration.

<Invention of Claim 1>
The invention of claim 1 is a stirring device for stirring the organic waste housed in an organic waste treatment plant,
A movable body capable of reciprocating in the plant;
A rotating body attached to the movable body so as to be capable of forward and reverse rotation about a predetermined rotation axis;
A plurality of claw portions protruding in the rotating body and having a longitudinal stirring bar ; and
Have
At the tip of the stirring bar , a normal tilling claw that pulverizes and agitates the organic waste when the rotating body is normally rotated, and a reversing tillage claw that crushes and agitates the organic waste during reversal. And are arranged facing each other along the rotation direction of the rotating body,
The normal tilling nail has a first blade portion formed on a peripheral edge opposite to the side on which the reversing tilling nail is arranged,
The agitation device according to claim 1, wherein the reversing tillage claw has a second blade portion formed at a peripheral edge opposite to a side where the normal rotation tilling claw is arranged.

Invention of Claim 2 is the stirring apparatus of Claim 1,
The forward rotation tillage nail is configured in a plate shape and has a first vertical nail portion arranged so that a plate surface thereof is along a virtual plane orthogonal to the rotation axis, and a tip side of the first vertical nail portion A first lateral claw portion that bends in a direction intersecting the plate surface of the first vertical claw portion,
The reversing tillage claw is configured in a plate shape and has a second vertical claw portion arranged so that a plate surface thereof is along a virtual plane orthogonal to the rotation axis, and a tip side of the second vertical claw portion. The stirring device according to claim 1, further comprising a second lateral claw portion that bends on the same side as the first lateral claw portion.

Invention of Claim 3 is the stirring apparatus of Claim 1 or Claim 2,
The first blade portion is curved and arranged so as to be convex on the side opposite to the side where the reversing tillage claw is arranged,
The second blade portion is arranged so as to be curved so as to be convex on the side opposite to the side on which the normal tilling claws are arranged.

Invention of Claim 4 is the stirring apparatus in any one of Claim 1 thru | or 3 ,
The agitator is for agitating the organic waste contained in a treatment tank provided in the treatment plant,
The rotating body is disposed above the processing tank,
The tip end side of the stirring rod is configured to move in the treatment tank,
The forward rotation tillage nail and the reversing tillage nail are configured to be movable in the processing tank.

The invention of claim 5 is the stirrer according to any one of claims 1 to 4 ,
The stirring rod is configured in a plate shape, and the plate surface is configured to be substantially orthogonal to the rotation axis of the rotating body.

Invention of Claim 6 is the stirring apparatus in any one of Claim 1 thru | or 5 ,
In the surface direction orthogonal to the rotation axis of the rotating body, the distance from the rotation axis of the rotating body to the first farthest part farthest from the rotation axis in the normal rotation tillage nail is the rotation tillage from the rotation axis The distance between the claw and the second farthest part farthest from the rotation axis is the same.

<Invention of Claim 1>
According to the configuration of the first aspect, during normal rotation of the rotating body, the organic waste accommodated in the plant is pulverized and stirred well by the first blade provided in the normal rotation tillage nail, and at the time of inversion The organic waste is pulverized and agitated satisfactorily by the second blade provided on the reversing tillage nail. That is, in any case of normal reversal, since the organic waste is cut and pulverized by the blade portion, the large lump is pulverized well and the particles are effectively uniformed. .
In addition, since the normal tilling claws and the reverse tilling claws are provided to face each other along the rotation direction, the reverse tilling claws move so as to follow the trajectory of the normal rotation tilling claws during normal rotation. As a result, the cultivating claw for reversal becomes difficult to buffer with organic waste. On the other hand, at the time of reversal, the normal rotation tillage nail moves so as to follow the trajectory of the reversal tillage nail, so that the normal rotation tillage nail becomes difficult to buffer the organic waste. In other words, in either case of normal reversal, organic waste can be crushed and stirred well with one tilling nail, and the other tilling nail does not interfere with stirring. The preferred configuration can be realized well.
Moreover, since the nail | claw part has a stirring rod, even if it is a case where the whole of the normal rotation tillage nail and the inversion tillage nail are embedded in organic waste, it can suppress effectively the resistance which arises in a rotating body. it can. That is, even when a large amount of organic waste is stirred, the rotating body itself is less likely to come into contact with the organic waste, and the rotating body is less likely to be loaded.

<Invention of Claim 2>
According to the configuration of the second aspect, in the forward rotation tillage nail, the first extending to the side away from the rotation axis and having a plate-like shape, and the plate surface is arranged to be along a virtual plane orthogonal to the rotation axis. A second nail provided with a vertical nail portion, extending in a direction away from the rotation axis and having a plate-like shape, and having a plate surface along a virtual plane orthogonal to the rotation axis. Since the portion is provided, the organic waste can be pulverized satisfactorily in both the normal rotation direction and the reverse rotation direction.
In addition, a first horizontal claw portion that is bent in a direction intersecting the plate surface of the first vertical claw portion is provided on the distal end side of the first vertical claw portion, and the same as the first horizontal claw portion on the distal end side of the second vertical claw portion. Since the 2nd horizontal nail | claw part bent in the side is provided, it becomes easy to reverse the organic waste which arose.

<Invention of Claim 3>
According to the configuration of claim 3, the first blade portion and the second blade portion can easily and efficiently exert a force on the organic waste soil block in both the normal rotation direction and the reverse rotation direction, and the soil block can be improved better. Will be cut and crushed.

<Invention of Claim 4 >
According to the structure of Claim 4 , even if it is a case where organic waste is fully accommodated until it reaches the upper end of a processing tank, organic waste is hard to contact a rotary body, and organic waste in a processing tank On the other hand, it is possible to efficiently stir without increasing the rotational resistance by using a stirring rod and a tilling nail.

<Invention of Claim 5 >
According to the structure of Claim 5 , it becomes a suitable structure which is hard to apply a load to a stirring rod at the time of stirring, and can reduce resistance accompanying rotation further.

<Invention of Claim 6 >
According to the configuration of the sixth aspect , the outermost edge of the rotation trajectory of the normal rotation tillage nail and the outermost edge of the rotation trajectory of the reversing tillage nail, regardless of whether the rotating body rotates in the normal rotation direction or the reverse rotation direction. Therefore, the organic waste is less likely to act on the other cultivating claw that is not the cultivating claw that performs pulverization / stirring (that is, the cultivating claw that is not pulverized / stirred). Therefore, the load of the nail | claw part and rotary body resulting from the cultivation nail | claw which does not plan crushing and stirring to organic waste can be reduced effectively.

<Embodiment 1>
Embodiment 1 of the present invention will be described with reference to the drawings.
FIG. 1 is an explanatory view for conceptually explaining a part of an organic waste treatment plant. In FIG. 1, the walls and ceiling of the plant are omitted. FIG. 2 is a side view showing the stirring device according to the present embodiment together with the rail 45, the processing tank 5, and the like. 1 and 2, only a part of the claw portions 60 are shown, and the remaining claw portions are not shown.
1. Overall Configuration The stirring device 1 of the present embodiment is configured as a device for stirring organic waste housed in an organic waste processing plant 200 (hereinafter also simply referred to as a plant 200), and performs a fermentation process. It reciprocates on the rail 5A laid in the processing tank 5.
The processing tank 5 has a generally rectangular box shape with an open top, and its side walls and bottom wall are formed of, for example, concrete.
In the following description, one end portion in the moving direction of the stirring device 1 in the processing tank 5 is one end portion 5B, and the other end portion is the other end portion 5C. This treatment tank 5 is, for example, throwing organic waste such as chicken manure into one of the areas and moving this organic waste to one end side while stirring or moving it to the other end side while stirring. For example, the introduced organic waste can be stirred and homogenized. That is, the organic waste that accumulates can be stirred and moved in both directions, and can be reciprocally stirred. Hereinafter, a specific configuration of the stirring device 1 will be described.

  The agitator 1 is provided with a self-propelled moving body 7 that reciprocates along a pair of rails 5A laid on both side walls of the treatment tank 5 between one end 5B and the other end 5C. The stirring part 9 is provided. The organic waste thrown into a mountain shape by a dump truck or the like is scooped up while being stirred by the stirring unit 9 and moved from one end side to the other end side or from the other end side to the one end side. That is, it can move in both directions.

  The self-propelled moving body 7 includes a frame 23 made of steel or the like, and four traveling wheels 27 that are rotatably supported at the four corners of the frame 23 and are driven by a motor (not shown). The power of the motor is transmitted to the traveling wheel 27 by a chain (not shown). And the self-propelled moving body 7 can be reciprocated in a first direction toward one end side and a second direction toward the other end side by driving and controlling the motor by a control device (not shown).

  The frame 23 is provided with a base portion 23A. The arm member 31 is attached to the base portion 23A so as to rotate up and down around the base end portion thereof. Specifically, the arm member 31 extends from both sides of the base portion 23A so as to be parallel to each other in the downstream direction while opening the width of the rail 5A, and is attached via a hinge 24. As a result, the arm member 31 rotates about the hinge 24, and is displaced up and down between a raised position where the stirring unit 9 is located slightly above and a lowered position as shown in FIGS. Has been.

  The rotating body 50 (FIG. 5) of the stirring unit 9 is driven via a chain 34 by a motor 33 on a mounting base 32 fixed to the upper surface of the arm member 31 (for example, rotating at about 150 rpm). To do).

  The stirring unit 9 can be moved up and down by a hydraulic cylinder 35 attached to the arm member 31. That is, the hydraulic cylinder 35 is attached so as to connect the arm member 31 and the frame 23 while both ends thereof are rotatably supported. In a state where the hydraulic cylinder 35 is extended, a claw portion 60 of the stirring unit 9 which will be described later is separated from the vicinity of the bottom of the processing tank 5, and in a state where the hydraulic cylinder 35 is contracted, a claw portion of the stirring unit 9 The front end of 60 is lowered to the vicinity of the bottom surface of the processing tank 5. The stirring unit 9 is controlled to rotate at a lowered position as will be described later. Further, the base portion 23A is provided with a hydraulic pump unit (not shown) for driving the hydraulic cylinder 35 on the upper surface thereof.

  Further, the frame portion 23 has a cord holding frame 23 </ b> B for holding the wiring cord 43. The frame portion 23B is erected so as to protrude upward from the base portion 23A. The wiring cord 43 of the stirring device 1 is held along the cord holding frame 23B.

  A rail 45 extending in the moving direction of the self-running moving body 7 is provided above the processing tank 5, and a plurality of sliders 47 are attached to the rail 45 so that the rail 45 can slide. The wiring cord 43 is hung from the tip of the cord holding frame 23B so as to meander to the hooks 47A of the plurality of sliders 47, and is connected to a control device (not shown).

2. Next, with reference to FIG. 3 to FIG. 5, the configuration of the claw portion and the vicinity thereof will be described.
FIG. 3 is a side view illustrating a claw portion used in the stirring device 1 of the present embodiment, and FIG. 4 is a front view thereof. FIG. 5 is a perspective view illustrating a rotating body used in the stirring device 1.
As described above, in the plant 200, the above-described self-propelled mobile body 7 (the self-propelled mobile body 7 corresponds to a mobile body in the claims) is provided so as to be reciprocally movable. The moving body 7 is provided with the above-described stirring portion 9 in a form including a plurality of claw portions 60. The agitating unit 9 includes a rotating body 50 attached to the self-propelled moving body 7 so as to be rotationally driven in both the normal rotation direction and the reverse direction around the rotation shaft 50A, and a plurality of claws provided so as to protrude from the rotating body 50. It is the structure provided with the part 60. FIG.

  As shown in FIG. 5, the rotating body 50 that holds the claw portion 60 is formed in a longitudinal shape along the rotation shaft 50 </ b> A, and rotates so as to extend in the radial direction from the shaft-shaped rotation base 52. A plurality of attachment portions 51 fixed to the base portion 52 are provided. The plurality of attachment portions 51 are arranged so as to cover the entire width of the rotation base 52, and the claw portions 60 are uniformly arranged in the width direction of the rotating body 50 (in this embodiment, the direction of the rotation shaft 50A is the width direction). It has become so. 3 and 4 is fixed to the mounting portion 51 by a fastening member such as a screw. As shown in FIGS. 1 and 2, the entire length of the claw portion 60 is such that the claw portion 60 is in a lowered state in which the stirring portion 9 is lowered and is in sliding contact with the bottom wall of the processing tank 5 or slightly away from the bottom wall. It is said to be about.

  As shown in FIG. 3 and FIG. 4, the tip of the claw portion 60 has a normal rotation tillage claw 63 for pulverizing and stirring organic waste when the rotating body 50 is normally rotated, and organic waste when the rotating body 50 is inverted. Inversion cultivating claws 65 that perform pulverization and stirring are arranged facing each other along the rotation direction of the rotating body 50. In the present embodiment, the clockwise direction in FIGS. 1 and 2 is the forward rotation direction, and the counterclockwise direction is the reverse direction, but it may be reversed. In this case, the relationship between the normal tilling claw and the reverse tilling claw is also reversed.

  The normal rotation tillage claw 63 has a first blade 63A formed at the peripheral edge opposite to the side on which the reversing tillage claw 65 is disposed, and the reversing tillage claw 65 is disposed with the normal rotation tilling claw 63. A second blade portion 65A is formed on the peripheral edge on the side opposite to the side.

  The normal tilling claw 63 includes a first vertical claw portion 63B and a first horizontal claw portion 63C. The first vertical claw portion 63B extends in a direction away from the rotation shaft 50A, has a plate shape, and is disposed so that the plate surface is along a virtual plane orthogonal to the rotation shaft 50A. 63 C of 1st horizontal nail | claw parts have comprised the structure bent in the direction which cross | intersects the plate | board surface of the 1st vertical nail | claw part 63B in the front end side of the 1st vertical claw part 63B.

  The reversing tillage claw 65 includes a second vertical claw portion 65B and a second horizontal claw portion 65C. The second vertical claw portion 65B extends in a direction away from the rotation shaft 50A, has a plate shape, and is disposed so that its plate surface is along a virtual plane orthogonal to the rotation shaft 50A. Further, the second horizontal claw portion 65C is configured to bend on the same side as the first horizontal claw portion 63C on the tip side of the second vertical claw portion.

  Further, the first horizontal claw portion 63C and the second horizontal claw portion 65C arranged at the tips of the forward rotation tillage claws 63 and the reverse rotation tillage claws 65 are oriented in the same direction so as to be substantially along the direction of the rotation shaft 50A. And bent. The normal tillage claws 63 and the reverse tillage claws 65 are generally called nail claws, and the forward rotation tillage claws 63 and the reverse tillage claws 65 have a reference shape centered on the surface F. Has been. The surface F is a surface that includes the rotation shaft 50 </ b> A on the surface and passes through the center of the stirring rod 61.

  Further, the first blade portion 63A is formed to be curved from the proximal end side to the distal end side of the first tilling claw 63 so as to protrude to the side opposite to the side on which the reversing cultivation claw 65 is disposed. . Further, the second blade portion 65A is formed to be curved from the proximal end side to the distal end side of the second tilling claw 65 so as to protrude to the side opposite to the side on which the normal rotation tilling claw 63 is arranged. .

  Further, the first horizontal claw portion 63C is arranged so as to be bent from the first vertical claw portion 63B to the reversing tillage claw 65 side, and the second horizontal claw portion 65C is forwardly rotated from the second vertical claw portion 63. The first lateral claw portion 63C and the second lateral claw portion 65C are opposed to each other.

  As shown in FIG. 2 and FIG. 3, the forward tilling claws 63 and the reversing tilling claws 65 configured as described above have a rotational axis of the rotating body 50 in a plane direction orthogonal to the rotating shaft 50 </ b> A of the rotating body 50. The distance from 50A to the first farthest portion 63D farthest from the rotation shaft 50A in the forward rotation tillage claw 63 is the distance from the rotation shaft 50A to the second farthest portion 65D farthest from the rotation shaft 50A in the reversing tillage claw 65 It is the same.

  That is, even when the rotating body 50 rotates in either the normal rotation direction or the reverse rotation direction, the outermost edge of the rotation trajectory of the normal rotation tillage claw 63 (one point in FIG. 2) in the plane direction orthogonal to the rotation axis 50A. The conceptual outline is shown by the chain line C) and the outermost edge of the rotation trajectory of the reversing tillage claw 65 coincides with the other tilling claw that is not the tilling claw for crushing / stirring (that is, crushing / stirring is not performed). Organic waste is less likely to act on the side tilling nail). Therefore, the load of the nail | claw part and rotary body resulting from the tilling nail | claw which does not plan crushing and stirring to organic waste can be reduced effectively.

  Further, the claw portion 60 has a longitudinal stirring rod 61 attached to the rotating body 50. The stirring rod 61 is configured in a plate shape, and the plate surface thereof is configured to be substantially orthogonal to the rotation shaft 50A of the rotating body 50. More specifically, the stirring rod 61 includes a first plate 61A configured in an elongated plate shape. The first plate 61 has a plate-like second plate 61B that is wider than the first plate 61. The first plate 61A and the second plate 61B may be formed as an integral part, or may be fixed by a fastening member such as welding or a screw. Then, at the tip of the stirring bar 61, a forward rotation tillage claw 63 and an inversion tillage claw 65 are respectively attached to both ends in the width direction of the second plate 61B.

  Further, in the stirring device 1, the rotating body 50 is disposed above the processing tank 5, and the tip end side of the stirring rod 61 is configured to move inside the processing tank 5. On the other hand, the normal rotation claw 63 and the reverse cultivation claw 65 are configured to be movable in the processing tank as a whole. And with rotation of the rotary body 50, the front-end | tip of the nail | claw part 60 scoops up organic waste, stirring, and acts so that it may fall to the diagonally downward side. As a result, a trapezoidal trapezoidal cross section extending in the longitudinal direction of the treatment tank 5 and having a height of about 120 cm suitable for fermentation treatment is formed, and each time the stirring unit 9 stirs the straw, the straw is a predetermined distance, for example, 2 m. It is supposed to move.

  And according to the structure of this embodiment, at the time of the normal rotation of the rotary body 50, the organic waste accommodated in the plant is pulverized and stirred by the first blade 63A provided on the normal rotation tillage claw 63. When reversing, the organic waste is pulverized and stirred by the second blade portion 65A provided on the reversing tillage nail 65. That is, in any case of normal reversal, the cutting process of the organic waste is performed by the blade portion, so that a large lump is pulverized satisfactorily and the particles are effectively uniformed.

Further, since the normal tilling claws 63 and the reverse tilling claws 65 are provided facing each other in the rotation direction, the reverse tilling claws 63 follow the trajectory of the normal rotation tilling claws 63 during forward rotation. 65 will move, and it will become difficult for the inversion tillage nail | claw 65 to buffer with organic waste. On the other hand, when reversing, the normal tilling claws 63 move so as to follow the trajectory of the reversing tilling claws 65, so that the normal tilling claws 63 are buffered with organic waste.
In other words, in either case of normal reversal, organic waste can be crushed and stirred well with one tilling nail, and the other tilling nail does not interfere with stirring. It can be realized well.

  In the configuration of the present embodiment, since the first vertical claw portion 63B and the second vertical claw portion 65B are provided so that the plate surface is along a virtual plane orthogonal to the rotation axis 50A, the normal rotation direction The organic waste can be pulverized satisfactorily in both the reverse direction and the reverse direction.

  Further, a first horizontal claw portion 63C that bends in a direction intersecting the plate surface of the first vertical claw portion 63B is provided on the front end side of the first vertical claw portion 63B, and the first horizontal claw portion 63B is provided on the front end side of the second vertical claw portion 65B. Since the second horizontal claw portion 65C that bends on the same side as the claw portion 63C is provided, the scraped organic waste is easily reversed.

  Further, the first blade portion 63A is curved and arranged so as to be convex on the side opposite to the side on which the reversing tillage claw 65 is arranged, and the second blade portion 65A is provided with the normal rotation cultivation claw 63. Since the first and second blade parts 63A and 65A are curved so as to be convex on the opposite side to the arranged side, the organic waste is generated in both the forward and reverse directions by the first blade part 63A and the second blade part 65A. The force easily acts on the soil mass efficiently, and the soil mass is cut and pulverized better.

  Further, since the normal tilling claws 63 and the reverse tilling claws 65 are attached via the stirring rod 61, the entire normal tilling claws 63 and the reverse tilling claws 65 are embedded in the organic waste. Even so, the resistance generated in the rotating body 50 can be effectively suppressed. That is, even when a large amount of organic waste is agitated, the rotating body 50 itself is less likely to come into contact with the organic waste, and the rotating body 50 is less likely to be loaded.

  Further, since the rotating body 50 is disposed above the treatment tank 5, even when the organic waste is fully accommodated up to the upper end of the treatment tank, the organic waste comes into contact with the rotating body 50. It is difficult to efficiently stir the organic waste in the treatment tank by using the stirring rod 61 and the tilling nail without increasing the rotational resistance.

  In the present embodiment, the stirring bar 61 is configured in a plate shape, and the plate surface is configured to be substantially orthogonal to the rotation axis of the rotating body. It becomes a suitable structure, and the resistance accompanying rotation can be further reduced.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.

(1) In the said embodiment, although the case where organic waste was fermented was demonstrated, what mixed mixtures, such as straw, in organic waste can also be processed similarly. The organic waste is not limited to livestock dung but may be garbage.
(2) The above embodiment is a configuration in which the stirring device 1 moves and stirs in the first direction that moves toward the one end portion 5B of the processing tank 5 and the second direction that moves toward the other end portion 5C. Although the configuration in which the organic waste is reciprocally stirred is illustrated, the stirring device 1 according to the above embodiment is configured so that one of the one end portion 5B and the other end portion 5C of the treatment tank 5 is upstream and the other is downstream. It is possible to cope with various usage forms. That is, instead of continuously performing reciprocal stirring, one-way stirring may be performed depending on the situation.
For example, the one end portion 5B can be used as the input side for organic waste, and the other end portion 5C can be used as the recovery side for organic waste after fermentation. In this case, organic waste such as chicken manure is introduced to the upstream side (one end portion 5B side), and fermentation is performed while moving this organic waste to the downstream side (the other end portion 5C side). You may utilize so that the organic waste (compost) after fermentation may be collect | recovered. In the case of this use form, when returning to the upstream side after reaching the downstream side, the stirring unit 9 is moved to the upper position and held (that is, lifted up), and the stirring device 1 is moved to the upstream side. It is good to do so.

The side view of the fermentation processing system using the stirring apparatus of 1st Embodiment of this invention. Side view of stirring device Side view of the claw portion used in the stirring device of FIG. Front view of the claw The perspective view which illustrates the rotary body used for the stirring apparatus of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Stirrer 5 ... Processing tank 7 ... Self-propelled moving body (moving body)
DESCRIPTION OF SYMBOLS 50 ... Rotating body 50A ... Rotating shaft 60 ... Claw part 61 ... Stirring rod 63 ... Forward rotation tillage 63A ... 1st blade part 63B ... 1st vertical claw part 63C ... 1st horizontal claw part 63D ... 1st furthest part 65 ... Tilling claw for reversal 65A ... Second blade part 65B ... Second vertical claw part 65C ... Second lateral claw part 65D ... Second farthest part 200 ... Organic waste treatment plant

Claims (6)

A stirring device for stirring the organic waste housed in an organic waste treatment plant,
A movable body capable of reciprocating in the processing plant;
A rotating body attached to the movable body so as to be capable of forward and reverse rotation about a predetermined rotation axis;
A plurality of claw portions protruding in the rotating body and having a longitudinal stirring bar ; and
Have
At the tip of the stirring bar , a normal tilling claw that pulverizes and agitates the organic waste when the rotating body is normally rotated, and a reversing tillage claw that crushes and agitates the organic waste during reversal. And are arranged facing each other along the rotation direction of the rotating body,
The normal tilling nail has a first blade portion formed on a peripheral edge opposite to the side on which the reversing tilling nail is arranged,
The agitation device according to claim 1, wherein the reversing tillage claw has a second blade portion formed at a peripheral edge opposite to a side where the normal rotation tilling claw is arranged. The forward rotation tillage nail is configured in a plate shape and has a first vertical nail portion arranged so that a plate surface thereof is along a virtual plane orthogonal to the rotation axis, and a tip side of the first vertical nail portion A first lateral claw portion that bends in a direction intersecting the plate surface of the first vertical claw portion,
The reversing tillage claw is configured in a plate shape and has a second vertical claw portion arranged so that a plate surface thereof is along a virtual plane orthogonal to the rotation axis, and a tip side of the second vertical claw portion. The stirring device according to claim 1, further comprising a second lateral claw portion that bends on the same side as the first lateral claw portion. The first blade portion is curved and arranged so as to be convex on the side opposite to the side where the reversing tillage claw is arranged,
The stirring device according to claim 2, wherein the second blade portion is arranged so as to be curved so as to protrude toward the side opposite to the side on which the normal rotation tillage nail is arranged. The agitator is for agitating the organic waste contained in a treatment tank provided in the treatment plant,
  The rotating body is disposed above the processing tank,
  The tip end side of the stirring rod is configured to move in the treatment tank,
  The stirring device according to any one of claims 1 to 3, wherein the whole of the normal rotation tillage claw and the reverse rotation tillage claw are movable in the processing tank. The said stirring bar is comprised by plate shape, and has comprised the board surface substantially orthogonally to the rotating shaft of the said rotary body, The structure of any one of Claim 1 thru | or 4 characterized by the above-mentioned. Stirring device. In the surface direction orthogonal to the rotation axis of the rotating body, the distance from the rotation axis of the rotating body to the first farthest part farthest from the rotation axis in the normal rotation tillage nail is the rotation tillage from the rotation axis The stirring device according to any one of claims 1 to 5, wherein the stirring device has the same distance as a second farthest portion farthest from the rotation axis of the nail.

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