JP2008253899A - Agitation device of organic matter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an agitation device of organic matter, having a high shearing efficiency of a treating object, agitating uniformly even at a low speed, and heating uniformly the treating object with simple structure. <P>SOLUTION: The agitation device is provided with a treatment chamber receiving the treating object, an agitating means of the treating object, and an air circulating means. The agitating means is provided with radial and spiral paddle bars around a rotary shaft roughly horizontally disposed in the treatment chamber. A ribbon screw is provided near the tip ends of the paddle bars to connect adjacent paddle bars forming steps between the parts near to the outer part and near to the inner parts. The treatment chamber is composed into double structure with an inner wall and an outer wall forming a circulation space therebetween. The air circulating means circulates air in the treatment chamber via the circulation space. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a stirring treatment apparatus suitable for microbial treatment of organic waste.

Stirring devices using paddle blades or ribbon screws are known.
However, when waste such as organic matter is decomposed with microorganisms, it must be stirred slowly so that the activity of the microorganisms becomes active. There was a problem that the object to be processed was not uniformly stirred.
In addition, it is said that the temperature should be adjusted to 60 to 70 ° C. in order to efficiently microbially decompose organic waste while suppressing the propagation of various bacteria, but the temperature is uniform when stirring slowly. There was a problem that was difficult to become.
Japanese Patent Application Laid-Open No. 2006-297250 discloses a stirrer in which a plurality of propeller blades are planted around a rotation axis, and a root side half and a tip side half have positive and negative pitches. Although the movement in the direction is promoted, the movement in the vertical direction is weak, the shearing force of the workpiece is also weak, and uniform stirring is insufficient.
In addition, the processing vessel is heated from the outside with the working fluid, but the structure is complicated and this is a high cost factor.

JP 2006-297250 A

  In view of the technical problems inherent in the above-mentioned background art, the present invention has a high shearing effect on a workpiece, can be stirred uniformly even at low speed rotation, and can stir the workpiece with a simple structure and can uniformly heat the workpiece. The purpose is to provide a device.

  The organic substance agitation processing apparatus according to claim 1 includes a processing chamber into which an object to be processed is charged, an agitation unit for the object to be processed, and an air circulation unit, and the agitation unit is disposed in the processing chamber in a substantially horizontal direction. A paddle bar is provided radially and spirally around the rotating shaft, and is connected with a ribbon screw so as to form a stepped portion between the adjacent paddle bar and the adjacent portion between the adjacent paddle bars. And the processing chamber has a double structure in which an inner wall and an outer wall circulate between the inner walls and the outer wall, and the air circulation means circulates air in the processing chamber via the circulation gap. .

Connected with a ribbon screw so as to form a stepped portion between the outer padding bar and the padding bar between the paddle bars adjacent to each other. A plurality of screw plates are continuously arranged, and one of the joint portions of the arc-shaped screw plates is connected to the outer side of the paddle bar and the other is connected to the inner side of the paddle bar. The purpose is to form a step, and to feed the object to be processed into this step portion and to shear at the inner portion or the outer portion.
The air circulation means circulates the air in the processing chamber via the circulation gap. For example, the air circulation means circulates the processing space in the processing chamber for processing the object to be processed and the circulation gap, and passes the air through the circulation path to the processing space. The purpose is to provide an air circulation device having a pump that circulates between the circulation gap, and the air circulation means is equipped with an air temperature control device, for example, the temperature of the treatment object is detected and the treatment object temperature is set appropriately. It is preferable to control the heating of the circulating air so as to adjust the value.

  The invention of the organic substance agitation processing apparatus according to claim 3 is arranged such that the ribbon screw is arranged so that the object to be processed is reversely fed in the left-right direction so as to approach the center part in the axial direction, and the axial center part and the axial end. It is characterized in that at least one portion is divided from the part, and a partition wall protruding from the bottom wall of the processing chamber to the part is provided.

A partition wall protruding from the bottom wall of the processing chamber to the dividing portion of the ribbon screw is provided, and the flow of the object to be processed is partially retained in the partition wall part, and stirred and sheared by the ribbon screw, so that the object to be processed is brought to the center part. The stirrability and shearing property to the object to be processed until it is approached are improved.
It is preferable that the partition wall has an axial through-hole, and the object to be processed flows through the through-hole.

  The organic substance agitating apparatus according to claim 5 is such that the bottom wall of the processing chamber has a semicircular cross section in the direction perpendicular to the axial direction, the axial side wall of the processing chamber is formed at a substantially right angle, and is axially endmost. The paddle bar of the part has an axial end blade whose axial side wall protrudes from the side, and the end blade has a notch at the outer peripheral end, and protrudes from the bottom wall so as to face the notch Is provided.

  The workpiece to be collected in the axial end of the processing chamber is scraped along the axial side wall and bottom wall by rotating the axial end blade provided on the paddle bar at the axial end. While stirring and flowing with a ribbon screw, shearing is performed between the protrusion protruding from the bottom wall and the axial end blade.

  According to a sixth aspect of the present invention, the paddle bar closest to the partition wall has blades facing the partition wall.

  The work to be collected in the partition wall in the processing chamber is agitated by scraping along the partition wall and the bottom wall by rotating the blade facing the partition provided on the paddle bar closest to the partition wall on the side where the work to be processed is stored. Then, the object to be treated is sheared between the edge of the through hole and the blade facing the partition, while the object to be processed flows into or through the partition wall.

In the organic matter agitation processing apparatus according to the present invention, the air in the processing space in the inner wall into which the object to be processed is introduced is circulated through a circulation gap provided on the outer side of the inner wall, so that the temperature of each inner wall is made uniform, The temperature of the workpiece can be made uniform.
And by providing the temperature control apparatus of the air to circulate, although it is a simple structure, the temperature of the whole to-be-processed object can be uniformly adjusted, microbial activity can be activated, and an organic substance can be decomposed | disassembled efficiently.
In addition, since the object to be treated is sealed twice between the inner wall and the outer wall, it is possible to reduce the leakage of odor to the outside of the apparatus.

If a dividing part is provided in the ribbon screw and a partition is provided in the processing chamber at the position of the dividing part of the bottom wall, the object can be partially retained in the partition part, and the object can be stirred and sheared by the ribbon screw. .
And the fluidity | liquidity of a to-be-processed object can be adjusted by providing a through-hole in a partition.

When an axial end blade is provided on the paddle bar at the axial end, the workpiece to be retained near the axial end of the processing chamber can be scraped off and stirred up and down to flow with a ribbon screw.
In the vicinity of the axial end, the stirring means for the workpiece is provided with blades directed toward the axial side wall on the paddle bar at the end in the axial direction, and the workpiece is scraped and stirred along the axial side wall and the bottom wall. However, shearing is performed between the protrusions and blades provided on the bottom wall, and in the vicinity of the partition wall, blades facing the partition wall are provided on the paddle bar close to the partition wall, and the workpiece is scraped and stirred along the partition wall and the bottom wall. Meanwhile, shearing is performed between the edge of the through hole of the partition wall and the blade.
Accordingly, since the object to be processed is intermittently stirred and sheared in the flow path of the object to be processed by the ribbon screw, the object to be processed can be uniformly stirred even at low speed rotation without forming a lump.

An example of an agitation processing apparatus according to the present invention will be described below with reference to the drawings.
FIG. 1 is an explanatory diagram of the structure of the agitation processing apparatus 10, FIG. 3 is an external view of the agitation processing apparatus 10, and FIG. 2 is an explanatory perspective view of the agitation mechanism provided in the processing chamber 20.
FIG. 4 shows the attachment relationship between the paddle bar 32 and the ribbon screw 40 as a partial view.
FIG. 2 is drawn in a simplified manner, for example, by reducing the number of turns of the ribbon screw 40 as compared with FIG.

As shown in FIGS. 1 and 3, the processing chamber 20 has a double structure including an inner wall 21 and an outer wall 22, and a processing space 23 for hermetically storing an object to be processed is provided in the inner wall 21, and the inner wall 21 and the outer wall 22 are provided. Is provided with a circulation gap 24 surrounding the inner wall.
The processing space 23 is surrounded by a bottom wall 25a, an axial side wall 25b, an axial side wall 25c, and an upper wall 25d. The bottom wall 25a has a semicircular shape in a cross section perpendicular to the axial direction. The direction side wall 25d is formed substantially vertically.
The bottom wall 25a is provided with a drain 14 inclined at 45 degrees.
The drain 14 is easy to scrape out an object to be processed that comes around by the rotation of the ribbon screw 40.
Although not shown in the drawing, the processing chamber is appropriately provided with a workpiece inlet.

As shown in FIGS. 1 and 2, the processing chamber 20 is provided with a bearing 31 on the axial side wall 25b, and a rotary shaft 30 is rotatably mounted in a substantially horizontal direction. The external motor 11, pulley 12, and The belt 13 is connected by a combination of belts 13 or a rotation transmission means such as a gear mechanism.
A plurality of bar-shaped paddle bars 32 are spirally planted around the rotating shaft 30, and the tips of the paddle bars 32 are arranged radially around the rotating shaft.
2 and 4, the tip of the paddle bar 32 is provided at the tip end portion of the paddle bar 32 inwardly with the outer periphery portion 44 that is provided on the outer side in the axial direction in a spiral shape across the adjacent paddle bars. Ribbon screws 40 provided alternately with the inward portions 45 are connected by welding or the like.
The ribbon screw 40 is formed by connecting a plurality of ribbon-shaped arc-shaped screw plates 43 so as to be connected to the front end portion of the adjacent paddle bar 32.
At the tip of each paddle bar 32, adjacent arc-shaped screw plates 43 are connected to each other by forming an outer peripheral portion 44 with one connecting end 47 close to the paddle bar tip side, and the other connecting end 47 is connected. An inward portion 45 that is closer to the rotating shaft 30 than the outer portion is formed and connected.
The outer portion 44 is formed so as to be aligned with the tip of the paddle bar 32, and the inner portion 45 is formed on the inside of the ribbon screw width of the arc-shaped screw plate 43 from the tip of the paddle bar.
As a result, the ribbon screw 40 has a step 46 formed at the connecting portion between the arc-shaped screw plates 43.
In the embodiment shown in FIG. 4, when the ribbon width is about 50 mm, the step 46 between the outer portion 44 and the inner portion 45 is set to about 50 mm, and the gap between the outer portion 44 and the bottom wall 22 is set. Was set to about 20 mm.
The ribbon screw 40 only needs to form a step at the outer peripheral edge as described above, and does not limit the connection form of the arc-shaped screw plate to the adjacent paddle bar tip.
As shown in FIGS. 1 and 2, the processing chamber bottom wall 22 has a protrusion 26 a that protrudes so as to face the rotational track of the outer edge of the inner portion 45 at a position corresponding to the inner portion 45 of the ribbon screw 40. It is provided.
The position of the projection 26a may be the lower end of the bottom wall 22 or an oblique side.

The ribbon screw 40 is rotated by the rotation of the rotating shaft 30 and guides the object to be processed in the processing space 23 by its spiral shape to flow in the axial direction.
When the workpiece is caused to flow, the ribbon screw 40 causes the workpiece to wrap around the gap of the step 46 between the inner portion 45 and the bottom wall 22 and then shears at the outer portion 44.
Then, the workpiece is sheared between the outer edge of the inner portion 45 and the protrusion 26 a by the rotation of the inner portion 45.
The ribbon screw 40 is divided into two ribbon screws 41a and 41b with the central portion 23a of the processing chamber 20 as a boundary, and the spiral directions are reversed on the right side and the left side.
Thereby, in FIG. 1, when the upper part of the shaft rotates from the back of the page toward the near side, the workpieces accumulated on the left and right on the bottom wall 25a are made to flow toward the center as indicated by arrows.

A paddle bar 32a adjacent to the central portion 23a across the axial center position of the rotary shaft 30 is provided with an opposing blade 34 protruding toward the center from the tip toward the root side.
The counter blades 34 are rotated by the rotation of the rotary shaft 30 so that the object to be processed brought close to the central portion 23a is lifted upward, and is spread and stirred left and right.
The opposing blade 34 may be as small as the ribbon screw width or may be a protrusion.
A protrusion is provided on the bottom wall 22 so as to face the rotational trajectory at the tip of the opposing blade 34 at a position corresponding to the opposing blade 34, and the workpiece is sheared between the protrusion and the opposing blade. You may do it.

The paddle bar 32b disposed at both ends of the rotating shaft 30 is provided with axial end blades 35 protruding from the tip toward the axial side wall 23 over the root.
An outer peripheral end portion of the axial end blade 35 is cut out by a cutout portion 35a.
The bottom wall 22 has a projection that faces the notch 35a of the axial end blade 35 at a position corresponding to the axial end blade 35 and protrudes so as to pass the notch 35a when the blade rotates. A plurality of 26b are provided in the axial circumferential direction.
The axial end blades 35 rotate to scrape away the object to be treated so as to be along the axial side wall 23, scrape it upward, stir it, and cause it to flow by the ribbon screw 40.
Then, the workpiece is sheared between the tip of the axial end blade 35 and the protrusion 26b.

Ribbon screws 41a and 41b divided at the central portion 23a are also divided into left and right portions by providing gaps 42, respectively.
The processing space 23 is provided with partition walls 27 that partition the space on the bottom wall 25a side at positions corresponding to the divided portions 42 of the ribbon screws 41a and 41b.
The paddle bar 32c adjacent to the partition wall 27 is provided with a partition-facing blade 33 that protrudes toward the partition wall 27 from the tip to the base side on the sending side in the direction in which the ribbon screws 41a and 41b send the workpieces. .
Further, the partition wall 27 is provided with a through hole 27a that penetrates the partition wall 27 in the axial direction.
The partition wall 27 is provided at the position of the gap where the ribbon screws 41a and 41b are divided so as to partition the space on the bottom wall 22 side of the processing chamber 21, so that the ribbon screws 41a and 41b rotate and move toward the center. The flow of the processed material to be sent out is partially restricted, and the processed material is retained at the partition wall 27 portion.
The workpiece retained in the partition wall 27 is agitated in the axial direction by rotation of the partition blades 33, and is sheared between the through-hole edge 27 b of the partition wall 27 and the partition blades 33.
Then, due to the stirring force of the blade 33 facing the partition wall and the feed force of the ribbon screws 41a and 41b, the object to be processed flows through the through hole 27a or over the partition wall 27 and flows to the center side of the partition wall 27. .
The outer peripheral end of the partition-facing blade 33 is cut out by a notch, and the bottom wall 25a is projected to a position corresponding to the partition-facing blade 35 in the axial direction so as to pass the notch when the blade rotates. For example, a plurality of protrusions may be provided in the circumferential direction, and the workpiece may be sheared between the blades facing the partition and the protrusions.
Thus, in the processing chamber 21, when the workpiece is flowed from the axial end portion 23b to the central portion 23a, the axial end portion 23b, the central portion 23a, and the middle thereof are stirred and sheared. Even if the rotation speed is about 2 to 5 rotations, the activity of microorganisms can be promoted by uniformly stirring the object to be treated.

The air in the processing space 23 and the air in the circulation gap 24 are circulated by the air circulation device 60.
The air circulation device 60 takes in the air in the processing space 23 through the suction pipe 62 by the pump 61 and blows it into the circulation gap 24 through the delivery pipe 63, and the air blown into the circulation gap 24 is connected to the processing space 23 and the circulation gap. 24 is returned from the circulation gap 24 into the processing space 23 by the reflux pipe 64 that is in communication with the pipe 24.
The recirculation pipe 64 has an intermediate portion drawn out of the outer wall 22 and passed through the temperature adjustment device 65, and the air circulation device 60 adjusts the temperature of the air to be circulated by the temperature adjustment device 65.
The temperature adjustment device 65 heats the air flowing through the circulation pipe 64 based on the detection value of a temperature sensor such as a thermocouple attached to the central position of the upper end of the partition wall 27 through the attachment pipe 66.
This temperature sensor is preferably provided in the vicinity of the center of the processing space 23 where the object to be stirred does not directly hit.
In this embodiment, the upper end of the partition wall 27 protects the temperature sensor.
Accordingly, it is preferable to provide the attachment pipe 66 on the upper portion of the partition wall 27 on the side where the ribbon screw is scraped upward from below.
The temperature control device 65 stably adjusts the temperature of the object to be processed to a temperature at which microorganisms in the object to be processed actively decompose and decompose organic substances efficiently, and the germs die.

The structure explanatory drawing of the stirring processing apparatus which concerns on this invention is shown. The perspective view for description of a stirring mechanism is shown. The external view of a stirring processing apparatus is shown. The partial explanatory view of the attachment relation of a paddle bar and a ribbon screw is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Organic substance stirring processing apparatus 11 Motor 12 Pulley 13 Belt 14 Drain 20 Processing chamber 21 Inner wall 22 Outer wall 23 Processing space 23a Center part 23b Axial direction end part 24 Circulation space | gap 25a Bottom wall 25b Axial side wall 25c Axial side wall 25d Upper wall 26a 26b Projection 27 Partition 27a Through-hole 27b Through-hole edge 30 Rotating shaft 31 Bearings 32, 32a, 32b, 32c Paddle bar 33 Partition-facing blade 34 Opposite blade 35 Axial end blade 35a Notch 40, 41a, 41b Ribbon screw 42 Dividing part 43 Arc-shaped screw plate 44 Outer part 45 Inner part 46 Step 47 Connection end part 60 Air circulation device 61 Pump 62 Suction pipe 63 Delivery pipe 64 Circulation pipe 65 Temperature control device 66 Temperature sensor attachment pipe

Claims (6)

A processing chamber for charging the processing object, a stirring means for the processing object, and an air circulation means;
The stirring means is provided with a paddle bar radially and spirally around a rotating shaft disposed in a substantially horizontal direction in the processing chamber, and is provided with an outer portion and an inner portion between the adjacent paddle bars at the tip of the paddle bar. Are connected with a ribbon screw so as to form a step portion of
The treatment chamber has a double structure with a circulation gap between the inner wall and the outer wall,
The organic agitation treatment apparatus, wherein the air circulation means circulates air in the treatment chamber via a circulation gap.   2. The organic substance stirring treatment apparatus according to claim 1, wherein the air circulation means includes an air temperature control device.   The arrangement of the ribbon screw is a left-right reverse feed so that the object to be processed is close to the axial center part, and at least one part between the axial center part and the axial end part is divided, The organic substance stirring treatment apparatus according to claim 1, further comprising a partition wall protruding from the bottom wall of the processing chamber to the dividing portion.   The organic substance stirring treatment apparatus according to claim 3, wherein the partition wall has an axial through hole. The bottom wall of the processing chamber has a semicircular cross section in the direction perpendicular to the axis, and the axial side wall of the processing chamber is formed at a substantially right angle,
The paddle bar at the end in the axial direction has an axial end blade whose axial side wall protrudes from the side, and the end blade has a notch at the outer peripheral end so as to face this notch. The organic substance stirring treatment apparatus according to claim 1, wherein a protrusion is provided on the bottom wall.   6. The organic matter agitation processing apparatus according to claim 5, wherein the paddle bar closest to the partition wall has a partition-facing blade with the partition wall protruding into the wall.

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