JP2002018403A - Waste decomposition apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To carry out malodorous gas exhaust out of a tent covering a circular tank for storing organic wastes such as garbage, night soil and the like and deodorization treatment at a low cost in a treatment apparatus so composed as to stir such wastes and ferment and decompose the wastes. SOLUTION: A dome-like tent 7 is installed on the outer wall 3 with a circular plane view of a circular tank 2 and the capacity of the space 8 in the inner side surrounded with the tent 7 and the circular tank 2 is made small so as to provide a waste treatment apparatus 1 in which a deodorization tank 9 is miniaturized and its cost is lowered. The capacity of the space 8 is made small also by making it possible to efficiently treat dew droplets in the circular tank 2 by a draining plate 24 installed in the lower rim part of the tent 7 and making the tent 7 possible to move in a groove 4 on the circular tank outer wall 3 in which a stirring apparatus supporting frame 5 moves.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste decomposition apparatus for fermenting and decomposing organic waste such as manure discharged from livestock, garbage discharged from households, and sewage sludge.

[0002]

2. Description of the Related Art In FIG. 9 and FIG. 10, a waste decomposition apparatus 60 has a circular storage tank (hereinafter referred to as a "circular tank 5").
0 ”), the organic waste M is stirred and stirred by a stirrer 51 moving around the center axis of the circular tank 50 to be fermented and decomposed. The circular tank 5
The organic waste M stored at 0 is manure and garbage discharged from livestock. The organic waste M is bridged between the central tower 62 and the upper edge of the outer wall 50a of the circular tank 50 from a hopper 63 on a central tower 62 erected at the center of the circular tank 50 by a carry-in conveyor 61. It is delivered to the distribution conveyor 64 provided so as to be delivered, and is conveyed to the vicinity of the outer wall 50a of the circular tank by the distribution conveyor 64 and put into the circular tank 50. The distribution conveyor 64 includes:
By running on the outer wall 50a of the circular tank by the wheels 64a, the organic waste M is distributed and charged into the circular tank 50 while rotating around the central tower 62.

As shown in FIG. 11, the stirrer 51 comprises:
By rotating and driving an endless strip 54 such as a chain wound between the sprockets 52 and 53 that are arranged vertically facing each other,
Flight member 55 projecting outside endless strip 54
The organic waste M in the circular tank 50 is scooped by the
(Solid arrow in 0), and stirring is performed. The stirrer 5
1 is provided in a suspended state from a traveling cart 56 provided so as to bridge between the upper edge of the circular tank outer wall 50a and the central tower 62, and shows the upper edge of the circular tank outer wall 50a. When the stirrer 51 is rotated around the central tower 62 by the traveling of the traveling carriage 56 on the rail that does not travel (the white arrow in FIG. 10), the organic waste M in the circular tank 50 is rotated. Is evenly fried and stirred. Further, in the stirrer 51, the endless strip 5 is raised so as to rise on the front side in the traveling direction and descend on the rear side in the traveling direction.
It is common to drive the rotation of the motor 4. The distribution conveyor 64 is located above the traveling vehicle 56 and the stirrer 51, and can move independently without interfering with the traveling vehicle 56 and the agitator 51. In addition, on the upper edge portion of the outer wall 50a of the circular tank, a rail for traveling movement for moving the distribution conveyor 64 is provided separately from the rail on which the traveling carriage 56 travels.

[0004] As shown in FIGS. 9 and 10, each time the organic waste M is stirred up by the stirrer 51,
The organic waste M was moved to the central portion side of the circular tank 50, and finally, a product such as compost obtained by fermenting and decomposing the organic waste M was opened at the bottom 50b of the circular tank 50 near the central tower 62. It is carried out from the take-out port 66 by the carry-out conveyor 67.

The outside of the circular tank 50 is covered with a cylindrical side wall 65a provided so as to cover the outside of the circular tank outer wall 50a.
The entirety is covered by a tent 65 consisting of a tent 65 and a roof part 65b covering the upper part thereof, so that the odor generated from the organic waste M is not released to the outside. The carry-in conveyor 61 passes through the tent 65 and reaches the central tower 62. The air in the space 65c inside the tent 65 is forcibly exhausted to a deodorizing tank 69 via an exhaust duct 68 arranged above the space 65a, and after being deodorized in the deodorizing tank 69, is released into the atmosphere. You. In addition, air is supplied into the space 65c inside the tent 65 from an air supply device (not shown) provided in a laid state at the circular tank bottom 50b. The air supplied from the air supply device at the bottom of the circular tank 50b contacts the organic waste M stored in the circular tank 50, activates the activity of microorganisms that ferment and decompose the organic waste M, and activates the organic waste. It promotes fermentation and decomposition of the substance M.

[0006]

The cost of the tent 65 and the deodorizing tank 69 is extremely high in the above-mentioned waste decomposition apparatus 60, and it has been difficult to reduce the cost. That is, in the waste decomposition apparatus 60, the tent 65
The air inside the tent 65 is constantly replaced in a large amount (for example, several times a minute) for the purpose of effectively preventing the odor from leaking to the outside of the tent. As the tent 65, the diameter of the side wall portion 65a having a circular shape in a plan view is 20 m to 30 m.
The height of the roof 65b (“H” in FIG. 9) is 7 to 8 m
A large amount is used, and the amount of air blown to the deodorizing tank 69 required for replacing the air in the tent 65 is enormous. If the amount of air blown to the deodorization tank 69 (the amount of processing air) is enormous, it is necessary to instantaneously deodorize a large amount of air. Therefore, the deodorization tank 69 is considerably large, and is downsized. , It was difficult to reduce the cost. In addition, the tent 65 is required to have strength enough to withstand wind pressure caused by the movement of a large amount of air in the internal space 65c and external deformation force caused by an earthquake, a typhoon, snowfall, and the like, so that cost reduction is difficult. Therefore, it has been required to secure the strength by reducing the size and to reduce the cost.

The amount of air blown to the deodorizing tank 69 for realizing the quick replacement of the air in the tent 65 depends on the volume in the tent 65. Therefore, if the tent 65 is reduced in size and the internal volume is reduced, the deodorization can be achieved. Even if the amount of air blown to the tank 69 is reduced, the number of times of replacing the air inside the tent 65 (the number of times per hour) can be maintained. However, FIG. 9, FIG.
In the waste decomposition apparatus 60 shown in FIG. 0, even though the tent 65 is downsized, the side wall portion 65a is formed in the circular tank outer wall 50a.
There is a limit to miniaturization (diameter reduction) if approaching
Even if the height of the roof portion 65b is reduced, it is limited to a height that does not interfere with the carry-in conveyor 61 and the exhaust duct 68, and there is a limit. The means for charging the organic waste M into the circular tank 50 is not limited to the means other than the carry-in conveyor 61, and various configurations can be adopted.
0b through the central tower 62 and the hopper 63
By adopting a carry-in conveyor configured to carry the organic waste M up to this, the installation of the carry-in conveyor 61 on the circular tank 50 can be omitted, and the roof 65b can be lowered, but the side wall 65a Since there is no appropriate technology for realizing the miniaturization, it is still not possible to realize a large reduction in the amount of air blown to the deodorizing tank 69.

Further, the waste disposal apparatus 60 has a problem that a large amount of dew condensation generated inside the tent 65 must be treated. That is, inside the tent 65,
A temperature of about 45 to 80 ° C. is secured by heat retention for the purpose of maintaining active activity of microorganisms that ferment and decompose the organic waste M, or by heat generated by the activity of the microorganism. The water content at the time of introduction into the circular tank 50 is approximately 50 to 70% (% by weight), but during stirring and fermentation in the circular tank 50, the water content is reduced to about 17 to 33%. Is released into the tent 65. Therefore, particularly in winter, a large amount of dew is formed on the inner side of the tent 65 due to a temperature difference between the inside and the outside of the tent 65, and the tent 65
A large amount of water (hereinafter "condensed water") will flow down along the inner surface. Since this dew water contains ammonia, it must be collected and detoxified (degraded by microorganisms, etc.) and then drained. The installation of detoxification equipment for detoxification also causes an increase in cost. Was. Conventionally, the dew condensation is collected by a pit 70 provided between the side wall 65a of the tent 65 and the outer wall 50a of the circular tank.
However, the presence of the pits 70 is an obstacle to downsizing the tent 65 by bringing the side wall 65a of the tent 65 closer to the circular tank outer wall 50a. For this reason, in order to reduce the size of the tent 65, it is required to develop a technology capable of efficiently performing the dew condensation process. In addition, in order to maintain the activity of the microorganism which decomposes and decomposes, the organic waste M secures a certain water content in the fermentation and decomposition processes (a water content higher than the compost obtained by fermentation and decomposition; 40 to 60%). It is necessary to maintain the water content by spraying water if necessary. Therefore, even if the water content decreases during the stirring and fermentation processes, during the fermentation decomposition, the water content increases the water content of the organic waste M during the fermentation decomposition, and the supplied water evaporates to cause dew condensation. Therefore, in the waste decomposition apparatus 60, it is difficult to avoid the occurrence of dew condensation inside the tent 65.

The present invention has been made in view of the above circumstances. (1) By providing a tent that covers the circular tub on the circular tub, the tent can be downsized. The drain plate installed at the lower edge on the inner side makes it easy to treat the water that flows down along the inner surface of the tent due to dew condensation, eliminating the need to install a separate facility for treating dew water containing ammonia. (2) Circular The tent covering the tank is rotated on the same rail as the stirrer support frame running on the upper edge of the circular tank, so that the tent can be downsized without interfering with the stirrer support frame. It is an object to provide a processing device.

[0010]

According to the first aspect of the present invention,
Manure discharged from livestock, garbage discharged from households,
A waste decomposition treatment apparatus for fermenting and decomposing organic waste such as sewage sludge, wherein a circular tank which is a storage tank in which organic waste is stored inside a circular outer wall in plan view, A stirrer that moves and agitates the organic waste in the circular tank, a tent that covers the circular tank, a carry-in conveyor that carries the organic waste into the circular tank via the bottom of the circular tank, A carry-out conveyor for carrying out the organic waste fermented and decomposed in the circular tank from the bottom of the circular tank, and an exhaust duct for guiding air in an inner space surrounded by the circular tank and the tent to a deodorizing tank. The tent is installed on the upper edge of the outer wall of the circular tank, and is projected obliquely downward toward the inside of the tent from the inner surface of the lower edge of the tent. A draining board is provided, Water flowing down along the inner surface of the tent from above is dropped into the storage space inside the circular tank from the tip of the draining plate projecting from the lower edge of the tent by the draining plate. And According to a second aspect of the present invention, in the waste decomposition apparatus according to the first aspect, a rail on which an agitator support frame supporting the agitator travels by traveling means is provided at an upper edge of an outer wall of the circular tank, The tent runs on the same rail as the stirrer support frame by running means provided at the lower edge of the tent. The invention according to claim 3 is a waste decomposition treatment apparatus for fermenting and decomposing organic waste such as manure discharged from livestock, garbage discharged from households, and sewage sludge, and has a circular outer wall in plan view. A circular tank that is a storage tank in which organic waste is stored inside, a stirrer that moves in the circular tank and stirs the organic waste in the circular tank, a tent that covers the circular tank, A carry-in conveyor for carrying organic waste into the circular tank via the bottom of the circular tank, and a carry-out conveyor for carrying out organic waste fermented and decomposed in the circular tank from the bottom of the circular tank, An exhaust duct that guides air in an inner space surrounded by the circular tank and the tent to a deodorizing tank, and a rail on which an agitator support frame that supports the agitator runs on an upper edge of the outer wall of the circular tank. Provided,
The tent runs on the same rail as the stirrer support frame by running means provided at the lower edge of the tent. According to a fourth aspect of the present invention, in the waste decomposition treatment apparatus according to the second or third aspect, the tent is connected to the stirrer support frame and travels integrally with the rail at the upper edge of the outer wall of the circular tank. It is characterized in that According to a fifth aspect of the present invention, in the waste decomposition treatment apparatus according to the third or fourth aspect, the stirrer support frame includes a frame central portion positioned at a central portion of the circular tank in a plan view, and a frame central portion extending from the frame central portion. With a plurality of extending beams extending radially, and configured to travel on the rail of the upper edge of the circular tank outer wall by traveling means provided on each extending beam, and the A waste decomposition treatment apparatus, wherein a lower edge of the tent is connected to a leading end in a direction extending from a center of the frame. According to a sixth aspect of the present invention, in the waste decomposition treatment apparatus according to any one of the second to fifth aspects, the tent is formed in a dome shape having a circular lower edge substantially coinciding with the outer wall upper edge. A plurality of substantially equal positions in the circumferential direction of the lower edge of the tent are connected to the stirrer support frame. The invention according to claim 7 is the invention according to claim 2.
6. The waste decomposition treatment apparatus according to any one of to 6, wherein the lifting prevention engagement portion provided on the lower edge portion of the tent is provided on an outer frame upper edge portion along the rail. And is engaged from below. The invention according to claim 8 is the waste decomposition treatment apparatus according to any one of claims 2 to 7, wherein the organic waste carried into the circular tank by the carry-in conveyor is distributed and charged into the circular tank. A distribution conveyor rail on which the distribution conveyor travels by a traveling means is provided inside the tent and extends on a circumference around a central axis of the circular tank. According to a ninth aspect of the present invention, in the waste decomposition apparatus according to any one of the second to eighth aspects, the exhaust duct is located near a center of rotation of the tent due to travel of the rail on an upper edge of a circular tank outer wall. The tent is rotatably connected to the tent via a bracket provided on the tent.

According to the first aspect of the present invention, the tent does not need to be configured to run on the outer wall of the circular tank, and includes a fixed tent on the outer wall of the circular tank. According to the second and third aspects of the present invention, the tent is configured to rotate coaxially with the circular tank by traveling on the outer wall of the circular tank.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a waste decomposition apparatus 1 according to one embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, this waste decomposition apparatus 1
Travel means 5a (see FIGS. 6 and 7), a circular tank 2 for storing the organic waste M therein, and a rail 4 provided on an upper edge 3a of the circular outer wall 3 of the circular tank 2 in a plan view. Stirrer support frame 5 traveling by
And a stirrer 6 suspended from the inside of the circular tank 2, and the rotationally driven stirrer 6 is moved around the central axis of the circular tank 2 (the central axis of the cylindrical outer wall 3) by the movement of the stirrer support frame 5. Thus, the organic waste M in the circular tank 2 is stirred and fermented. As the traveling means 5a, various configurations such as one using an endless strip and one using a rotatable ball can be adopted. Here, wheels are employed. The means 5a may be referred to as "wheels 5a". The rail 4
Here, a rail on which the wheels 5a travel is used.

As shown in FIGS. 3A, 3B and 4,
The tent 7 that covers the circular tank 2 is a circular dome shape whose plan view substantially matches the outer wall 3 of the circular tank. It runs on the same rail 4. The top 7b of the tent 7 is located on an extension of the center axis of the circular tank 2, and the tent 7 rotates around the top 7b by running on the rail 4. The running means 7a may be of various configurations, such as one using an endless strip or one using a rotatable ball. Here, wheels are used. The means 7a may be referred to as "wheels 7a".

The air (odor) in the inner space 8 surrounded by the circular tank 2 and the tent 7 is removed by a deodorizing tank 9.
Is connected to the tent 7 via a ring-shaped bracket 11 arranged coaxially with the center of rotation of the tent 7 at the tent top 7b so as to be rotatable relative to the tent 7. Even if the tent 7 rotates due to the running of the rail 4 of 7a, the exhaust duct 10 is not displaced or twisted. The odor in the space 8 is sucked by a blower 9 a attached to the deodorizing tank 9 and is forcibly sent to the deodorizing tank 9. The tent 7 is a dome-shaped structure having a substantially circular shape in plan view extending radially from the top ring 7c as a center. The bracket 11 is provided on the top 7b of the tent 7 coaxially with the center of rotation of the tent 7. The tent 7 is rotatably housed inside the top ring 7c and does not displace even when the tent 7 rotates, while being positioned on the center of rotation of the tent 7. Therefore, the exhaust duct 10 connected to the bracket 11 is not displaced and is stably supported at a fixed position.

As shown in FIGS. 1, 2 and 4, a carry-in conveyor 12 for carrying the organic waste M into the storage space 2a inside the circular tank 2 has an input hopper 13 installed outside the circular tank 2. Conveyor 12a for transporting the organic waste M charged into the tank to the lower part of the center of the circular tank 2, and a cylindrical partition 15a for covering the outside of a central tower 15 erected in the center of the circular tank 2. And an ascending conveyor 12b that conveys the organic waste M conveyed by the horizontal conveyor 12a to the upper portion of the central tower 15.

The distribution conveyor 17 for distributing and introducing the organic waste M carried into the circular tank 2 by the carry-in conveyor 12 into the storage space 2a of the circular tank 2 extends over substantially the diameter of the circular tank 2. The circular tank 2 is rotated around a central axis of the circular tank 2 by running on a distribution conveyor rail 27 provided along the lower edge of the tent 7 by running means 17a provided at both ends in the extending direction. It is supposed to be. The central portion in the extending direction of the distribution conveyor 17 is rotatably supported by the central tower 15. The organic waste M transported to the upper part of the central tower 15 by the carry-in conveyor 12 is received by the central portion of the distribution conveyor 17 in the extending direction, and is transported by the distribution conveyor 17 to both ends in the extending direction, not shown. It falls into the circular tank 2 from the charging port and is charged. The position where the organic waste M is charged from the distribution conveyor 17 into the circular tank 2 is determined by the storage space 2a of the circular tank 2.
, That is, near the inner surface of the outer wall 3 of the circular tank.
The running means 17a may be of various configurations, such as one using an endless strip or one using a rotatable ball. Here, wheels are used. Means 17a may be referred to as "wheel 17a".

The organic waste M charged into the circular tank 2 is
By being stirred and stirred by the stirrer 6, fermentation and decomposition are promoted, and a product such as compost is obtained. FIG.
An example is shown below. In FIG. 8, the stirrer 6 winds an endless strip 20 (a chain in FIG. 8) between a pair of sprockets 18 and 19 which are vertically spaced apart from each other with a substantially horizontal rotation axis parallel to each other. By transmitting a driving force from a driving source (not shown) to one or both of the upper and lower sprockets 18 and 19 to rotationally drive the endless strip 20, flight members provided at a plurality of longitudinal positions of the endless strip 20 are provided. 21, the organic waste M on the left side in FIG. 8 in the traveling direction is scraped upward, and the scraped organic waste M is transferred to the rear side in the traveling direction on the right side in FIG. The organic waste M inside is stirred up and stirred. The direction of rotation of the endless strip 20 is clockwise in FIG. 8, and it rises on the front side in the traveling direction of the stirrer 6 and falls on the rear side in the traveling direction.

The stirrer 6 illustrated in FIG. 8 is provided with, for example, an engagement mechanism between a rail (not shown) disposed along the endless strip 20 and an engagement projection projected from the flight member 21. By the flight direction control mechanism, the flight member 21 projects outside the stirrer 6 on the front side in the traveling direction of the stirrer 6, and the flight member 21 extends outside the stirrer 6 along the endless strip 20 on the rear side in the traveling direction. It does not protrude. The stirrer employed in the present invention is not limited to the stirrer 6 illustrated in FIG. 8 as long as it can stir the organic waste M. For example, the stirrer 51 illustrated in FIG. Various configurations can be adopted, such as a configuration in which the organic waste is agitated by the rotation of the agitating blade.

As shown in FIGS. 1 and 2, the organic waste M scooped up by the stirrer 6 is transported to the rear side in the traveling direction of the stirrer 6, and the central part of the circular tank 2 is more moved than before stirring. It is moved to a position slightly shifted to the side. Therefore, every time the organic waste M in the circular tank 2 is stirred up by the stirrer 6, the organic waste M gradually moves toward the center of the circular tank 2, and finally becomes circular as fermented or decomposed compost. It falls through the tank bottom 2b and into the outlet 22 provided in a groove shape around the outside of the partition 15a outside the central tower 15. The organic waste M dropped into the outlet 18 is conveyed to the warehouse 23 outside the circular tank 2 by the unloading conveyor 16 installed below the circular tank 2.

Next, the tent 7 and the stirrer support frame 5
And the relationship with the distribution conveyor 17 will be described. First, the configuration of the tent 7 will be specifically described. 3 (a), (b),
As shown in FIG. 4, the tent 7 is covered with a roofing material (not shown) such as a waterproof plate or a waterproof sheet on a framework composed of a plurality of curved beams 7d connected to the top ring 7c and extending radially from the top ring 7c. It has a roof 7e formed in a dome shape having a substantially circular shape in a plan view, and a lower end wall portion 7f formed in a ring shape along the lower edge of the roof portion 7e.

Each curved beam 7d is provided such that the inside of the curve is the lower surface and the outside of the curve is the upper surface. The strength is ensured by appropriately connecting the central portions in the longitudinal direction of the curved beam 7d using the horizontal connecting member 7g. FIG.
As shown in FIG. 7, between a pair of curved beams 7d diametrically opposed via a top ring 7c, a wire 7k is stretched and connected between central portions of the curved beams 7d in the longitudinal direction. FIG.
Holder 7m projected downward from middle and top ring 7c
Is for supporting the central portion of the wire 7k so as not to hang down.

The upper end of a column 7h provided at a plurality of positions in the circumferential direction of the lower end wall 7e is rigidly connected to the lower end of the curved beam 7d, and the lower end of the column 7h is a lower end edge of the lower end wall 7f. Is rigidly connected to a lower end frame 7i (although the installation of the lower end frame 7i is omitted at the installation position of the stirrer support frame 5), and the tent 7 is composed of these curved beams 7d, columns 7, and the like. It has a strong framework. In order to reduce the height of the tent 7 and reduce the internal volume as much as possible, it is preferable that the curvature of the roof 7e of the tent 7 be as gentle as possible. It is preferable to make the vertical dimension of the portion 7f as small as possible.

The diameter of the lower edge wall portion 7f substantially coincides with the outer wall 3 of the circular tank, and as shown in FIGS.
The lower edge wall portion 7f, which is the lower end of the circular tank, is provided on the outer wall 3 of the circular tank so as to substantially coincide with each other. Lower edge of tent 7 (lower edge wall 7f)
The traveling means 7a provided on the lower end) travels on the same rail 4 as the traveling means 5a of the stirrer support frame 5, whereby the tent 7 can rotate around the central axis of the circular tank outer wall 3. In addition, the wheel 7a is specifically,
The lower edge wall 7f is provided to be supported by the lower end frame 7i.

The lower edge wall 7f is integrated so as to incorporate the stirrer support frame 5. As shown in FIG. 2, specifically, the stirrer support frame 5 is provided at a frame central portion 5c located at a central portion of the circular tank 2 in plan view.
And extending beams 5d extending radially in four equal directions from the frame central portion 5c, and are formed in a cross shape in plan view. The center part 5c of the frame is the center tower 15
, And each extension beam 5d
The wheel 5a runs on the rail 4 at the upper edge of the outer wall 3 of the circular tank. Stirrer support frame 5
By the running of the rail 4 of each extension beam 5d, the whole can be freely and smoothly rotated around the center axis of the circular tank 2 around the frame central portion 5c. Note that the stirrer 6 is provided only in one of the four extended beams 5d, but a plurality of extended beams 5d are provided.
d may be provided. Further, the number of the extension beams 5d may be two (provided in the diameter direction of the circular tank 2), three, or five or more other than the four, but the tent lower edge wall portion By disposing and connecting to the diameter of 7f, the expansion or contraction of the lower edge wall portion 7f can be effectively prevented from deforming, securing the connection force with the lower edge wall portion 7f, and stabilizing the connection state; To minimize the number of extension beams 5d so as not to hinder the introduction of the organic waste M from the distribution conveyor 17 into the storage space 2a of the circular tank 2, miniaturization, weight reduction, and cost reduction are realized. With that in mind,
It is advantageous to provide four cross beams 5d to form a cross in a plan view.

As shown in FIGS. 4, 6, and 8, the lower edge wall 7f, which is the lower edge of the tent 7, is connected to each extension beam 5d.
Are connected to the leading end in the direction of extension from the frame central portion 5c. A part of the plurality of pillars 7h constituting the lower edge wall 7f is rigidly connected to the stirrer support frame 5 and is erected, and the tent 7 and the stirrer support frame 5 are on the circular tank outer wall 3. The running of the same rail 4 allows the wheels to rotate integrally. The tent 7 and the stirrer support frame 5 are moved by the driving force of the driving device 5 b mounted on the stirrer support frame 5.
By rotating the wheels 5a, the rails 4 on the outer wall 3 of the circular tank run. In addition, as the driving device 5b, various configurations such as an electric motor and a hydraulic motor can be adopted.

As shown in FIG. 5, the lifting prevention engaging portion 2 provided on the lower edge portion (lower edge wall portion 7f) of the tent 7 is provided.
5 is engaged from the lower side with the rail as the rail 4 as an engagement frame. Specifically, the lifting prevention engagement portion 25 is fixed to the lower edge wall portion 7f,
The tent 7 includes a protruding piece 25a protruding below the traveling wheel 7a, and a roller 25b rotatably supported by the protruding piece 25a. The rail having a U-shaped cross section as the rail 4 is disposed with the U-shaped opening facing the outside of the circular tank 2, and the traveling wheel 7 a of the tent 7 is provided with a U-shaped rail as the rail 4. It runs on the upper flange 4a of the rail. The roller 25b of the lifting prevention engagement portion 25 is in contact with the lower surface side of the upper flange 4a of the rail 4 so that the tent 7 is engaged with the rail 4 via the lifting prevention engagement portion 25. Even if a cross wind or a strong wind blowing upward from near the surface of the ground acts, the tent 7 is prevented from rising. When the tent 7 is rotated by the traveling of the wheels 7a on the rail 4, the rollers 25b of the floating prevention engaging portions 25 are rotated.
Rolls on the lower surface of the upper flange 4a of the rail 4 so as to sandwich the upper flange 4a of the rail 4 between the wheel 7a of the tent 7 and the tent 7 rotates extremely smoothly. You.

As shown in FIGS. 4, 6, and 8, the distribution conveyor rail 27 on which the wheels 17a of the distribution conveyor 17 travel is specifically provided over the entire circumference of the lower edge wall 7f in the circumferential direction. It is provided on an overhang 7j protruding from the inner surface side. On the lower edge wall 7f, a draining plate 24 projecting obliquely downward and inward toward the inside of the tent 7 (inside the lower edge wall 7f) runs on the distribution conveyor rail 27. It extends over the entire periphery of the lower edge wall 7f above the moving distribution conveyor 17 without interfering therewith. The tip of the draining plate 24 projecting from the lower edge of the tent 7 reaches above the storage space 2 a inside the circular tank 2.

Also, the lower end wall 7 of the tent 7 is provided by the distribution conveyor rail 27 and the overhanging portion 7j which are rails.
f, the lower end wall 7 is connected.
f and the deformation resistance of the entire tent 7 are improved. The draining plate 24 is also provided with each pillar 7 constituting the lower end wall 7 f of the tent 7.
The connection of h contributes to the improvement of the deformation resistance of the lower end wall 7f and the tent 7 as a whole. The stirrer support frame 5 also contributes to the improvement of the deformation resistance of the lower end wall 7f and the tent 7 as a whole. In the dome-shaped tent 7, the load of the roof 7e of the tent 7 and various loads such as snow on the roof 7e are reduced by the bending of the curved beam 7d.
Since d is supported by the axial force, excellent strength is ensured in the lower end wall portion 7f, so that the entire tent 7 also has excellent strength.

In this waste decomposition apparatus 1, the circular tank 2
Water that forms on the inner surface of the tent 7 and flows downward along the inner surface of the tent 7 due to the temperature difference between the outside temperature and the temperature inside the space 8 surrounded by the tent 7 (hereinafter referred to as “condensed water”) Upon reaching the plate 24, the water is dropped and drained from the tip of the draining plate 24 into the storage space 2a inside the circular tank 2 along the draining plate 24. For this reason, the treatment of the condensed water can be performed extremely efficiently, and there is no need to separately provide a means for collecting and draining the condensed water. In addition, the dew water that has fallen into the circular tank 2 permeates and is absorbed by the organic waste M stored in the circular tank 2. The amount of condensed water is very small compared to the amount of organic waste M stored in the circular tank 2, and an increase in the water content of the organic waste M due to the introduction of the condensed water does not adversely affect fermentation and decomposition. There is no. That is, in the waste decomposition apparatus 1, the dew condensation water is also removed from the organic waste M in the circular tank 2.
In addition, the fermentation decomposition treatment is performed, so that it is not necessary to separately install a dew-water treatment facility, thereby realizing cost reduction.

In this waste decomposition apparatus 1, the tent 7
Is configured to run on the same rail 4 as the stirrer support frame 5, so that the tent 7 can be significantly reduced in size. Thereby, without reducing the volume of the circular tank 2,
The volume of the space 8 inside the circular tank 2 and the tent 7 is greatly reduced, and the drain plate 24 can also effectively treat the dew condensation water. As a result, since the diameter of the tent 7 can be significantly reduced, the volume of the internal space 8 surrounded by the circular tank 2 and the tent 7 can be significantly reduced, the amount of air blown to the deodorization tank 9 can be reduced, and the deodorization can be performed. The size and cost of the tank 9 can be reduced. The tent 7 itself can be reduced in cost by downsizing.

In the tent 7 according to the present invention, the inclination of the roof is reduced by reducing the inner diameter, and the height of the tent 7 (the height from the circular tank bottom 2b to the tent top 7b) can be reduced. 8 can be reduced. In the tent 7 according to the present invention, for example, the diameter of the circular tub is changed in comparison with the case where the inner diameter of the tent lower edge portion of the tent of the conventional configuration (see FIG. 9) constructed outside the circular tub is about 25 m. The inner diameter (based on the inner diameter of the lower edge) is about 2 m without
The height could be reduced by 1.5 to 2.0 m. Space 8
The volume of air blown into the deodorizing tank 9 is reduced by 4
0-50% could be reduced. As a result, the size and cost of the deodorizing tank 9 having a high cost ratio in the processing apparatus 1 can be significantly reduced.

Since the weight of the tent 7 can be reduced by reducing the size of the tent 7, it is not necessary to make the rotational driving force of the agitator support frame 5 particularly strong. In addition, it is not necessary to make the circular tank outer wall 3 particularly rigid. Further, there is an advantage that the size of the tent 7 is reduced and the roof slope is alleviated, so that durability against a side wind such as a typhoon is improved.

Further, in the waste decomposition apparatus 1, the tent 7 is integrated with the stirrer support frame 5, so that there is an advantage that vibrations generated due to the rotational drive of the stirrer 6 can be suppressed. When the stirrer 6 and the stirrer support frame 5 supporting the stirrer 6 vibrate, the stirrer 6
The organic waste M in the middle of the frying is dropped from the flight member 21 of the stirrer 6, the stirring depth becomes unstable, and the stirring resistance (contact resistance) of the organic waste M is increased. It is known that the efficiency is reduced. However, by suppressing the vibration of the stirrer 6 and the stirrer support frame 5 that supports the stirrer 6, the effect of preventing a drop in the stirring efficiency can be obtained. In addition, since noise can be significantly reduced by preventing vibration, there is an advantage that adverse effects of noise around the installation location of the circular tank 2 can be prevented.

The waste decomposition apparatus according to the present invention is not limited to the above-described configuration, but can be variously modified.
For example, the tent is not limited to a dome shape, and various structures such as a gable roof, a quadrangular pyramid, a hexagonal pyramid, and a cone can be employed. However, in any shape of the tent, the distribution conveyor rail and the drainer are provided so as to extend over the entire periphery of the lower edge of the tent. Also,
The installation position of the distribution conveyor rail is not limited to the lower edge of the tent, and may be, for example, an intermediate position between the lower edge and the top of the tent. In any case, the distribution conveyor rail can be functioned as a reinforcing material for the tent by providing the distribution conveyor rail in a ring shape around the central axis of the circular tank inside the tent. The rail on which the stirrer support frame and the tent travel is not limited to the rail, and various configurations such as a groove formed on the upper edge portion of the concrete circular tank outer wall 3 can be adopted.

[0035]

As described in detail above, according to the waste decomposition apparatus according to the first aspect, the tent inner surface is formed by the draining plate protruding from the inner surface of the lower edge of the tent toward the inside of the tent. By treating the condensed water, the installation of a tent on the outer wall of the circular tank is realized by omitting the installation of the collecting and draining equipment, and the tent is downsized. In the invention according to claims 2 and 3, a rail on which the stirrer supporting frame supporting the stirrer is run by running means is provided at the upper edge of the outer wall of the circular tank, and a tent that covers the upper part of the circular tank is placed under the rail. By running on the same rail as the stirrer support frame by the running means provided at the edge, the installation of the tent on the outer wall of the circular tank is realized, and the tent is lowered to a position that does not interfere with the stirrer support frame. The tent is downsized by moving the edge closer to the center of the circular tank. As a result, the tent can be reduced in size, cost, and weight, and the volume of the inner space surrounded by the tent and the circular tank can be significantly reduced. Therefore, the size and cost of the deodorization tank can be reduced. Can be realized, and the cost of the entire waste decomposition treatment apparatus can be reduced. Further, since the land area required for the construction of the circular tank is reduced, land acquisition becomes easy, and land acquisition costs can be reduced. In addition, since the dew water is also fermented and decomposed together with the organic waste in the circular tank, there is no need to separately install a dew water treatment facility, thereby realizing cost reduction.

According to the fourth aspect of the present invention, the tent is connected to the stirrer support frame so as to run integrally with the rail at the upper edge of the outer wall of the circular tank. It has an excellent effect of suppressing vibrations caused by the drive of and improving the stirring efficiency. Further, as in claim 5, a stirrer support frame including a frame central portion located at a central portion in plan view of the circular tank and a plurality of extending beams radially extending from the frame central portion is employed. By connecting the lower edge of the tent to the leading end of each extending beam from the center of the frame in the extending direction, vibration caused by driving the stirrer can be more effectively suppressed, stirring efficiency can be improved, and device failure can be prevented. Effects such as noise suppression can be easily obtained.

According to the invention described in claim 6, the tent is formed in a dome shape having a circular lower edge substantially coinciding with the upper edge of the outer wall, and substantially in the circumferential direction of the lower edge of the tent. Since a plurality of equal portions are connected to the stirrer support frame, deformation of the lower edge of the tent can be effectively prevented by the strength of the stirrer support frame,
It has an excellent effect of improving the deformation resistance of the tent.

According to the seventh aspect of the present invention, the lifting prevention engaging portion provided at the lower edge portion of the tent is provided with respect to the engaging frame provided at the upper edge portion of the outer wall along the rail. Since the tent is engaged from below, it is possible to prevent the tent from being lifted by an external force such as an earthquake or a cross wind.

According to the invention as set forth in claim 8, the distribution conveyor for distributing and charging the organic waste carried into the circular tank by the carry-in conveyor into the circular tank travels by traveling means. However, by being placed inside the tent, not at the upper edge of the circular tank outer wall,
Since there is no need to provide a distribution conveyor rail at the upper edge of the circular tank outer wall, it is possible to further reduce the size of the tent installed at the upper edge of the circular tank outer wall. In addition, the distribution conveyor rail functions as a reinforcing material for the tent, and has an excellent effect of improving the strength of the tent.

According to the ninth aspect of the present invention, the exhaust duct is connected to the tent via a bracket provided near the center of rotation of the tent due to the travel of the rail on the upper edge of the outer wall of the circular tank. Because they are connected so that they can rotate relative to each other, they are not affected by the rotation of the tent. Further, the height of the tent can be reduced as compared with the case where the exhaust duct is inserted into the tent from the side of the tent. This makes it possible to further reduce the size, weight and cost of the tent, and further reduce the size and cost of the entire processing apparatus by further reducing the volume of the inner space surrounded by the tent and the circular tank. Can be realized.

[Brief description of the drawings]

FIG. 1 is a front sectional view showing a waste decomposition treatment apparatus according to an embodiment of the present invention.

FIG. 2 shows an installation state of a stirrer support frame and a distribution conveyor as viewed in a cross section taken along the line AA of FIG. It is a top view.

FIGS. 3A and 3B are views showing a tent of the waste decomposition processing apparatus of FIG. 1, wherein FIG. 3A is a front view and FIG. 3B is a plan view.

FIG. 4 is a front sectional view showing a tent of the waste decomposition processing apparatus of FIG. 1;

5 is a sectional view showing the lower end of the lower edge wall of the tent of the waste decomposition apparatus of FIG. 1 and the vicinity of the rail on the outer wall of the circular tank;

6 is a front sectional view showing the lower edge wall of the tent of the waste decomposition apparatus of FIG. 1 and the vicinity of the extension beam of the stirrer support frame.

FIG. 7 is a plan view showing the vicinity of an extended beam of a stirrer support frame of the waste decomposition processing apparatus of FIG. 1;

8 is a sectional view showing the lower edge wall of the tent of the waste decomposition apparatus of FIG. 1 and the vicinity of the extension beam of the stirrer support frame, as viewed from the inside of the space surrounded by the tent and the circular tank; Is shown.

FIG. 9 is a perspective view showing a conventional waste decomposition apparatus.

FIG. 10 is a plan sectional view showing the waste decomposition apparatus of FIG. 9;

11 is a cross-sectional view illustrating an example of a stirrer applied to the waste decomposition processing apparatus of FIG.

[Explanation of symbols]

M: Organic waste, 1: Waste treatment device, 2: Circular tank, 3
... outer wall (circular tank outer wall), 4 ... rail, 5 ... stirrer support frame, 5a ... running means (wheels), 5c ... frame central part, 5d ... extended beam, 6 ... stirrer, 7 ... tent, 7a
... running means (wheels), 8 ... space, 9 ... deodorizing tank, 10 ... exhaust duct, 11 ... bracket, 12 ... carry-in conveyor, 1
6 ... Conveyance conveyor, 17 ... Distribution conveyor, 17a ... Running means (wheels), 24 ... Draining plate, 25 ... Floating prevention engagement part, 27 ... Distribution conveyor rail.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4D004 AA02 AA03 BA04 CA15 CA19 CA48 CB02 CB22 CB42 CB43 CB46 CC08 4D059 AA01 AA03 BA01 BA08 BA27 BA44 BJ16 CA16 CB04 CB07 CB08 CC01 4G035 AB48 4G036 AC52 AC55

Claims (9)

[Claims] 1. A waste decomposition treatment apparatus for fermenting and decomposing organic waste such as manure discharged from livestock, garbage discharged from homes, and sewage sludge, wherein a wastewater treatment apparatus is provided inside a circular outer wall in plan view. A circular tank that is a storage tank in which organic waste is stored, a stirrer that moves in the circular tank and stirs the organic waste in the circular tank, a tent that covers the circular tank, A carry-in conveyor for carrying organic waste into the circular tank via the bottom, a carry-out conveyor for carrying out organic waste fermented and decomposed in the circular tank from the bottom of the circular tank, and the circular tank And an exhaust duct for guiding air in an inner space surrounded by the tent to a deodorization tank, wherein the tent is installed on an upper edge of the outer wall of the circular tank and a lower edge inner surface of the tent. Side facing the inside of the tent A draining board that is projected obliquely downward is provided, and water flowing down along the inner surface of the tent from above the draining board is projected from the lower end of the tent of the draining board by the draining board. A waste decomposition treatment apparatus, wherein the waste decomposition apparatus is configured to be dropped into a storage space inside the circular tank. 2. The waste decomposition treatment apparatus according to claim 1, wherein a rail on which an agitator support frame supporting the agitator runs by running means is provided at an upper edge of an outer wall of the circular tank, and the tent is provided with a tent. A waste decomposition treatment apparatus wherein the traveling means provided at the lower edge portion travels on the same rail as the stirrer support frame. 3. A waste decomposition treatment apparatus for fermenting and decomposing organic wastes such as manure discharged from livestock, garbage discharged from households, and sewage sludge, wherein a wastewater treatment apparatus is provided inside a circular outer wall in plan view. A circular tank that is a storage tank in which organic waste is stored, a stirrer that moves in the circular tank and stirs the organic waste in the circular tank, a tent that covers the circular tank, A carry-in conveyor for carrying organic waste into the circular tank via the bottom, a carry-out conveyor for carrying out organic waste fermented and decomposed in the circular tank from the bottom of the circular tank, and the circular tank And an exhaust duct that guides air in an inner space surrounded by the tent to a deodorization tank, and a rail on which an agitator support frame supporting the agitator runs is provided at an upper edge of the circular tank outer wall, The tent has its lower edge Waste decomposition treatment device by the traveling means provided, characterized in that is adapted to travel the same rail as the agitator supporting frame. 4. The waste decomposition treatment apparatus according to claim 2, wherein the tent is connected to the stirrer support frame,
A waste decomposition treatment apparatus characterized by running integrally with the rail at the upper edge of the circular tank outer wall. 5. The waste decomposition treatment apparatus according to claim 3, wherein the stirrer support frame extends radially from the center of the frame located at the center of the circular tank in plan view. With a plurality of extension beams, while being configured to travel on the rail of the upper edge of the circular tank outer wall by traveling means provided on each extension beam,
A waste decomposition treatment apparatus, wherein a lower edge of the tent is connected to a leading end of each extension beam in a direction extending from a center of the frame. 6. The waste decomposition apparatus according to claim 2, wherein the tent is formed in a dome shape having a circular lower edge substantially coinciding with the upper edge of the outer wall. A plurality of substantially equal circumferential locations on the lower edge of the tent are connected to the stirrer support frame. 7. The waste decomposition apparatus according to claim 2, wherein a floating prevention engaging portion provided on a lower edge portion of the tent is provided on an upper edge portion of an outer wall along the rail. A waste decomposition treatment apparatus, which is engaged with a provided engagement frame from below. 8. The waste decomposition processing apparatus according to claim 2, wherein the organic waste carried into the circular tank by the carry-in conveyor is distributed and charged into the circular tank. The rails for the distribution conveyor on which the traveling means travel,
A waste decomposition treatment apparatus provided inside the tent and extending on a circumference around a central axis of the circular tank. 9. The waste decomposition apparatus according to claim 2, wherein the exhaust duct is provided in the vicinity of a center of rotation of the tent due to running of the rail on an upper edge of a circular tank outer wall. A waste decomposition treatment apparatus, which is rotatably connected to the tent via a bracket.