JPH0543672B2 - - Google Patents

Description

Detailed Description of the Invention "Industrial Application Field" The present invention involves depositing organic raw materials for a certain period of time,
This invention relates to a circular fermentation device for producing organic fertilizer by composting by periodically stirring.

``Prior Art'' Previously, the present applicant provided a circular fermentation device (Utility Application No. 62-61889) suitable for use in producing organic fertilizer by composting organic matter as a raw material.

The circular fermentation device has a cylindrical fermentation tank for depositing and fermenting raw materials such as organic substances for a certain period of time, and has an annular running rail arranged at the upper end of the fermentation tank. A traveling frame is disposed so as to extend in the radial direction through the central axis of the fermentation tank, and a pair of wheels are provided to allow the fermentation tank to run freely on a traveling rail around the central axis of the fermentation tank. Furthermore, the traveling frame is provided with a stirring device for stirring the deposits in the fermentation tank. The agitation device is provided with a parallel conveyor frame extending vertically from the running frame toward the bottom of the fermentation tank, and rotation shafts are attached to the upper and lower ends of the conveyor frame, respectively. An endless conveyor strip is rotatably wound between them.

Then, by rotating the endless conveyor strip so that the front side moves from the bottom to the top of the fermentation tank, the raw materials on the front side of the endless conveyor strip are scooped up and moved to the rear of the endless conveyor strip. As a result, the raw materials in the fermentation tank are mixed, and the raw materials press against the pressure receiving plate provided on the back side of the endless conveyor strip, thereby rotating the traveling frame above the fermentation tank. .

``Problem to be Solved by the Invention'' However, in the conventional circular fermentation device, the endless conveyor strip of the stirring conveyance device is attached to the center of the traveling frame so as to extend along the radial direction of the fermentation tank. Therefore, the raw materials stirred by the endless conveyor strip are only moved from the front to the rear of the endless conveyor strip, and cannot be expected to move much in the circumferential direction of the fermenter; The raw materials input (e.g. from the center) are not transported to the outlet (e.g. side wall) of the fermenter in an orderly manner according to the order in which they were input, and some of the raw materials may be stored earlier than the specified fermentation period. There was a fear that some of the raw materials would be discharged or remain inside the fermentation tank for a long time even after the fermentation period.

This invention was made in view of the above-mentioned problems, and it is possible to reliably move the raw materials inputted from the input port toward the discharge port in accordance with the order in which they were input inside the fermentation tank. It is an object of the present invention to provide a circular fermentation device capable of fermenting raw materials by retaining them in a fermentation tank according to a set fermentation period.

"Means for Solving the Problems" In order to achieve the above object, the present invention provides a fermentation tank having a cylindrical side wall, and a fermentation tank having both ends on a rail laid annularly along the side wall of the fermentation tank. a traveling frame which is constructed so that the fermentation tank can run freely and which rotates on the rail around the central axis of the circular fermentation tank; and a stirring conveyance device that is attached to the traveling frame and stirs the sediment accumulated in the fermentation tank. The stirring and conveying device is provided with an endless belt strip rotating in a direction in which the surface in the traveling direction rises between the vicinity of the center of the traveling frame and the vicinity of the side wall of the fermentation tank, The rotating shaft of the belt strip is disposed so as to be horizontally displaced by a predetermined distance with respect to the center line (line that overlaps with the diameter) on the plane of the fermentation tank.

Further, a circular fermentation tank provided in a position where the rotation axis of the endless conveyor strip rotating in a direction in which the surface in the traveling direction rises is advanced by a predetermined distance in the horizontal direction with respect to the center line on the plane of the fermentation tank. and a circular fermentation system in which the rotating shaft of the endless conveyor strip that rotates in the direction in which the surface in the advancing direction rises is set back in the horizontal direction by a predetermined distance from the center line on the plane of the fermentation tank. The tanks may be stacked alternately.

"Operation" Since the rotation axis of the endless conveyor strip is moved in parallel in the horizontal direction from the center line of the fermentation tank, the rotation axis of the endless conveyor strip is behind the center line on the plane of the fermentation tank in the direction of travel. When it is moving, the raw materials stirred by the rotation of the endless conveyor strip move from the front side of the endless conveyor strip to the rear side, and are also transferred toward the outside of the circular fermentation tank. . Furthermore, if the rotation axis of the endless conveyor strip moves forward in the advancing direction from the center line on the plane of the fermenter, the raw material stirred by the rotation of the endless conveyor strip It moves from the front side of the body to the back side and is transferred toward the center of the circular fermentation tank.

In addition, by creating a structure in which circular fermentation tanks, in which the rotation axis of the endless conveyor strip moves parallel to the front and rear sides of the traveling direction from the center line, are stacked alternately in three layers, for example, the top circular fermentation tank The raw material that has moved inside the tank from the center to the outside falls to the outside of the second stage circular fermentation tank, and after moving inside the second stage circular fermentation tank from the outside to the center, it is transferred to the first stage. It falls into the center of the circular fermentation tank, is moved from the center of the first stage circular fermentation tank to the outside, and is discharged to the outside.

"Example" The present invention will be described below with reference to FIGS. 1 to 4.

1 to 3 show a first embodiment of the present invention, and reference numeral A in the figures indicates a circular fermentation apparatus of the present invention.

The circular fermentation apparatus A includes a fermentation tank 1 having a cylindrical side wall 1a, an annular rail 2 laid along the upper edge of the fermentation tank 1, and both ends of the fermentation tank 1 that can run freely on the rail 2. A running frame 3 that is constructed and rotates on a rail 2 around the central axis Oz of a circular fermentation tank 1, and this running frame 3.
The main component is an agitation conveyance device 5 attached to the fermentation tank 1 to agitate the raw materials 4 deposited in the fermentation tank 1.

The running frame 3 includes a pair of wheel support parts 6,
6 and two frames 7, 7 installed parallel to each other on a plane on both sides of the center line Oy, with the diameter of the fermentation tank 1 being the center line Oy, and between the frames 7, 7. It is composed of reinforcing members 7a, 7a fixed at symmetrical positions across the central axis Oz of the fermentation tank 1, and in the case of this embodiment, the frame 7,
7 and reinforcing members 7a, 7a is a raw material input port 7b, and approximately half of the traveling frame 3 is provided with an agitation conveyance device 5 for stirring the deposits in the fermentation tank 1. There is.

The stirring and conveying device 5 has an outer surface of the reinforcing member 7a,
Two parallel conveyor frames 8, 8 extending toward the bottom of the fermentation tank are fixed to the wheel support part 6 at the end of the running frame 7, and the upper and lower ends of the conveyor frames 8, 8 The rotating shafts 9a and 9
b is constructed. The center axes Oa and Ob of the rotating shafts 9a and 9b are horizontally moved by a distance e with respect to the center line Oy on the plane of the fermentation tank (see Fig. 3). An endless conveyor strip 10 is wound between them. The endless conveyor strip 10 has a predetermined length (in this embodiment,
flat bars 10a, 10a, . . . between the reinforcing member 7a and the wheel support portion 6a) are arranged parallel to each other at regular intervals, and at least both ends thereof are connected in an annular manner by a band-shaped member,
On the outer surface side of the flat bars 10a, 10a,... are blade members 11, 11, whose tips protrude outward.
... are fixed at regular intervals in the horizontal direction. In addition, the blade members 11, 11, . . . are connected to each flat bar 1.
The entire surface of the endless conveyor strip 10 is covered by sequentially shifting and fixing the position in the vertical direction every 0a.

In addition, by appropriately selecting the number of blade members 11, the attachment interval, etc., the load applied to the endless conveyor strip 10 can be adjusted appropriately, and the deposits 4 can be efficiently stirred and conveyed.

The agitation conveyance device is configured to rotate the endless conveyor strip 10 on the side facing the traveling direction of the traveling frame 3 (arrow X direction in this embodiment) upward, so that the piles in the traveling direction are A drive device (not shown) for transferring the object 4 to the rear side of the endless conveyor strip 10 is provided, and the endless conveyor strip 1 is provided on the rear side of the endless conveyor strip 10.
A pressure receiving plate 12 for receiving the deposits transferred by the endless conveyor strip 10 is provided at a position parallel to the blade member 11 and slightly spaced apart from the tip of the blade member 11. It is fixed to the frame 7 by a fixing member 13.

In the figure, reference numerals 15a, 15b, and 15c are conveyors for conveying raw materials such as organic substances into the circular fermentation tank 2, 16 is a hopper, and 17 is a drive device for the conveyor.

Next, the operation of the circular fermentation apparatus A according to the present invention configured as described above will be explained.

Raw material 4 introduced into the center of fermentation tank 1 after being conveyed by conveyors 15a, 15b, 15c
is deposited in the fermentation tank and becomes compost as it ferments, but the sediment 4 deposited in the fermentation tank is moved by an agitation conveyance device 5 that rotates within the fermentation tank 1 at a rate of one rotation per day. After being scraped up from below (by the blade members 9, 9, . . . that move as the endless conveyor strip 10 rotates), it falls behind the pressure receiving plate 12 and is deposited thereon. And pressure receiving plate 1
When the deposits 4 accumulated on the back side of the fermentation tank 2 reach a certain amount, the combined force of the heavy pressure of the deposits 4 pushes the pressure receiving plate 12 forward, thereby moving the traveling frame 3 to the upper part of the fermentation tank 1. The stirring and conveying device 5 connected thereto is moved forward. Therefore, the traveling frame 3 does not require a driving source for traveling, and the initial cost and running cost of the device can be reduced.

In addition, as shown in FIG. 1, the distance between the inner end surface on the front side of the endless conveyor strip 10 and the central axis Oz of the fermentation tank is a, and the distance from the front side of the endless conveyor strip 10 to the rear surface of the pressure receiving plate 12 is a. If the distance to the side is b, and the distance between the inner end surface on the rear side of the pressure receiving plate 12 and the central axis Oz of the fermentation tank is c, then the endless conveyor strip 10
Since the central axes Oa and Ob of the rotating shafts 9a and 9b are moved by a distance e from the center line Oy of the fermentation tank 1,
The raw material 4 in the fermentation tank 1 is stirred as the endless conveyor strip 10 rotates, and when moving from the front side to the rear side of the endless conveyor strip 10, the raw material 4 is stirred at a predetermined distance from the central axis Oz of the fermentation tank 1. distance (ca)
This means that the amount is transferred to the outer circumferential side. In this example, the raw material undergoes a fermentation period of about 17 days in the fermentation tank 1, and then becomes fertilizer for the product and is discharged to the outside from an outlet (not shown) formed in the side wall 1a of the fermentation tank. ing.

As described above, according to the circular fermentation apparatus A of this embodiment, the rotation axes Oa and Ob of the stirring conveyance apparatus 10 are provided horizontally displaced by the distance e from the central axis Oy of the fermentation tank 1. When the sediment is transported from the front to the rear by the endless conveyor strip 10, it is agitated and is reliably transported a predetermined distance toward the outer periphery of the fermentation tank 1. Pressure receiving plate 1 from the front side of body 10
By appropriately changing the distance to the rear surface of 2 (dimension b), the arrangement position (dimension e), and the number of rotations in the fermentation tank 1, the period during which the raw material 4 stays in the fermentation tank 1, that is, the fermentation period can be managed.

Next, a modification of the circular fermentation apparatus A shown in the first embodiment will be explained.

First, as shown by broken lines in FIGS. 1 and 2, a hopper or the like 20 is provided on the back side of the endless conveyor strip 10 to receive deposits transferred to the back side by the endless conveyor strip 10. , the Hotupa et al. 20
If belt conveyors 21a and 21b are provided to transfer the deposits received by the fermentation tank 1 to the center of the fermentation tank 1, the deposits that have been fermented and become almost product compost can be circulated in the fermentation tank as dry material. can be done.

Further, the rotating shafts 9a and 9b of the endless conveyor strip 10 of the stirring and conveying device 5 are aligned with the center line of the fermentation tank 1.
If the endless conveyor strip 10 moves horizontally by a distance e from Oy, the endless conveyor strip 10 will stir the raw material in the fermentation tank 1, and the raw material will be transferred to the fermentation tank 1. It can be transferred a predetermined distance from the outer circumferential side toward the center. In this case, the raw material input port may be provided at the outer periphery of the fermentation tank, and the product discharge port may be provided at the center of the fermentation tank.

Furthermore, a hopper 20 or the like is provided on the back side of the endless conveyor strip 10 to receive the deposits 4 transferred to the back side by the endless conveyor strip 10,
The sediment received by the hopper 20 etc. is transferred to the fermentation tank 1.
If a belt conveyor is provided for transporting the fermented material to the outer periphery of the fermenter, the fermented deposits, which are essentially composted products, can be circulated inside the fermenter as dry material.

Next, a second embodiment of the circular fermentation tank shown in the above embodiment will be described using FIG. 4. In this embodiment, the same elements as those shown in the previous embodiment are denoted by the same reference numerals, and the explanation thereof will be omitted.

This circular fermentation tank has a plurality of stacked layers of the circular fermentation tanks shown in the first embodiment inside the building H, and circular fermentation tanks A1, A2, The rotating shafts 9a and 9b of the stirring conveyor 10 disposed inside the A3 are provided so as to be alternately moved in parallel to the front or rear of an arbitrary center line on the plane of the circular fermentation tank for each floor. It is.

In the case of this embodiment, the rotating shafts 9a and 9b of the endless conveyor strip 10 of the circular fermentation tank A1 in the lowest layer F1
are moved to the rear side from the center line Oy on the plane of the fermentation tank A1, and the rotating shafts 9a and 9b of the endless conveyor strip 10 of the circular fermentation tank A2 of the second floor F2 are moved from the center line Oy on the plane of the fermentation tank A2. Furthermore, the rotating shafts 9a, 9b of the endless conveyor strip 10 of the circular fermentation tank A3 of the third floor F3 are the same as the rotating shafts 9a, 9b of the endless conveyor strip 10 of the circular fermentation tank A1 of the lowest floor F1. 9b has been moved to the rear side of the center line Oy on the plane.

Furthermore, the outer part of the circular fermentation tank A3 installed at the top (3rd floor in the case of this example) is connected to the ceiling of the outer periphery of the 2nd floor circular fermentation tank A2,
A discharge duct 25 for dropping raw materials is provided, and a discharge duct 25 for dropping raw materials is provided at the center of the bottom of the two-story circular fermentation tank A2. 26 are provided. Furthermore, a belt conveyor 24 for conveying raw materials to the center of the circular fermentation tank A3 is provided above the circular fermentation tank A3 installed on the top floor.

According to the three-story circular fermentation tank configured in this way, the raw materials put into the circular fermentation tank A3 on the top floor (in the case of this example, the third story) are deposited inside the fermentation tank 1. After moving from the inside of the fermenter to the outside, it is transferred to the second stage circular fermenter A2.
It falls on the outer periphery of the second stage circular fermentation tank A2, becomes a deposit inside the second stage circular fermentation tank A2, moves from the outside to the center part, and then further falls to the center of the first stage circular fermentation tank A1. The inside of the first-stage circular fermentation tank A1 becomes a sediment, is transferred from the center toward the outside, and is discharged to the outside of the fermentation tank 1.

Therefore, in the case of the three-tiered circular fermentation tank of this embodiment, the raw materials are transferred to the lower circular fermentation tank while being alternately moved inside and outside the circular fermentation tank. , the top (3
Fermentation tanks A3 to A1 on the lowest level (1st floor)
It is only necessary to ferment the raw materials during this period, and the fermentation period in the circular fermentation tanks A3 to A1 for each layer can be shortened. In addition, by stacking circular fermenters, it is possible to reduce the area occupied by the land on which the circular fermenters are installed, increasing the efficiency of land use, and eliminating the need for special topography, making it possible to fit into small spaces. This has the effect of easing locational conditions, such as being able to install a large amount of equipment, and reducing the occupied area, easing locational conditions, and reducing construction costs.

"Effects of the Invention" As described above, in the circular fermentation tank of the present invention, the stirring conveyance device is disposed between the vicinity of the center of the traveling frame and the vicinity of the side wall of the fermentation tank, and the An endless belt strip rotating in a direction in which the surface rises is provided, and the rotating shaft of the endless belt is moved in parallel by a predetermined distance in the horizontal direction with respect to the center line on the plane of the fermenter. When the material stirred by the rotation of the endless conveyor strip moves from the front side to the rear side of the endless conveyor strip, it is transferred toward the outer periphery or center of the circular fermentation tank. By appropriately setting the distance and attachment position between the endless conveyor strip and the pressure receiving plate, the fermentation period of the raw material in the fermentation tank can be controlled.

In addition, between the back side of the endless conveyor strip of the stirring conveyance device and the center or outer peripheral side of the fermentation tank,
A belt conveyor may be provided to transfer the transferred sediment to the back side of the endless conveyor strip, and the sediment in the fermentation tank can be transferred again to the center or outer periphery of the fermentation tank and used as dry material. can do.

Furthermore, by stacking multiple layers of circular fermenters, it is possible to make appropriate adjustments such as shortening the fermentation period for each circular fermenter and increasing the amount of raw materials processed. This has the effect of reducing the area occupied and reducing equipment costs.

[Brief explanation of the drawing]

1 to 3 show a first embodiment of the present invention, FIG. 1 is a plan view of the circular fermentation apparatus of the present invention, and FIG. 2 is a cross-sectional view of the circular fermentation apparatus of FIG. 1. FIG. 3 is a side view of a conveying device used in the circular fermentation apparatus, and FIG. 4 is a side sectional view of a case where a plurality of circular fermentation apparatuses are stacked one on top of the other. A, A1, A2, A3...Circular fermentation device, S...
...Agitation conveyance device, 1...Fermentation tank, 1a...Side wall,
2... Traveling rail, 3... Traveling frame, 4...
Raw material (or deposit or product), 5...Agitating conveyance device, 9a, 9b...Rotating shaft, Oa, Oy...Center line, Oz...Center axis line, 10...Endless belt strip.

Claims (1)

[Scope of Claims] 1. A circular fermentation device for producing compost by periodically stirring organic raw materials in order to deposit and ferment them for a certain period of time, comprising: a fermentation tank having a cylindrical side wall; A running frame whose both ends are movably constructed on a rail laid in a circular shape along the side wall of the fermentation tank, and which rotates on the rail around the central axis of the circular fermentation tank, and a running frame attached to the running frame. and a stirring conveyance device for stirring the sediment accumulated in the fermentation tank, and the stirring conveyance device has a surface in the direction of movement from the vicinity of the center of the traveling frame to the vicinity of the side wall of the fermentation tank. An endless belt strip rotating in a direction in which the fermentation tank rises is arranged, and the rotation axis of the endless belt strip is arranged so as to move horizontally by a predetermined distance in parallel to the center line on the plane of the fermentation tank. A circular fermentation device characterized by: 2. The circular fermentation apparatus according to claim 1, wherein the rotation shaft of the endless conveyor strip rotates in a direction in which the surface in the traveling direction rises in a horizontal direction by a predetermined distance with respect to the center line on the plane of the fermentation tank. a circular fermentation tank installed in a forward position, and a rotating shaft of an endless conveyor strip that rotates in a direction in which the surface in the advancing direction rises in a horizontal direction by a predetermined distance with respect to the center line on the plane of the fermentation tank. A circular fermentation device characterized by alternately stacking a circular fermentation tank and a circular fermentation tank provided at a retreated position.