JPH10290973A - Fermentation treatment device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To adequately ferment and treat a material to be treated in a fermentation tank in accordance with the characteristics of the material to be treated. SOLUTION: An agitation and transfer device 10 for transferring a material 8 to be treated into a fermentation tank 2 and for stirring is arranged in freely traveling. The agitation and transfer device 10 is controlled and driven by a control device 5. A pair of pulleys 11a 11b of the agitation and transfer device 10 travels at a prescribed movement speed Vm and a chain 12 between one pair of the pulleys 11a, 11b moves at a prescribed scoop speed Vs. The movement speed Vm of one pair of the pulleys 11a, 11b, the scoop speed Vs of the chain 12 and the chain angle ϕ of the chain 12 vary in accordance with the characteristics of the material to be treated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fermentation treatment apparatus for composting fermentation of an object to be treated, such as organic sludge or agricultural waste, with microorganisms.

[0002]

2. Description of the Related Art Conventionally, there has been known a technique in which an object to be treated, such as organic sludge or agricultural waste, is mixed with a moisture adjusting material to adjust the water content to facilitate fermentation, and then fed into a fermenter for fermentation. ing. In the fermenter, the object is agitated and transferred once or twice a day to compost the object over about one month.

[0003]

In order to promote the fermentation in the fermenter, the material to be treated is stirred as described above to maintain an aerobic atmosphere in the fermenter and to apply a proper treatment to the material to be treated. Contains moisture.

[0004] However, the conventional stirrer has problems in that the material to be treated is not sufficiently agitated, and that the material to be treated remains unstirred in the fermenter. In addition, there is a problem that the stirrer breaks down due to the weight of the object to be processed and a shearing load.

In addition, when the moisture content of the object to be treated is adjusted by the moisture adjusting material, the adjusting material is difficult to ferment, so that the time for composting is prolonged, it is difficult to obtain the adjusting material, There is a problem that costs are high.

[0006] The present invention has been made in view of the above points, and a fermentation treatment apparatus capable of appropriately performing fermentation of an object to be treated.

[0007]

According to the present invention, there is provided a fermenter for storing an object to be treated comprising organic sludge or agricultural waste;
A stirring / transfer device that is disposed in the fermenter and transfers and stirs the object to be processed, and a control device that drives and controls the stirring / transfer device, wherein the stirring / transfer device includes a pair of pulleys at least one of which is a driving pulley. And a chain spanned between the pair of pulleys, and a plurality of scoops attached to the chain.The pair of pulleys travels in the fermenter at a predetermined transfer speed, and the chain moves at a predetermined scoop speed. Move,
And the chain between the pair of pulleys is inclined by a predetermined chain angle with respect to the horizontal direction, and the transfer speed of the pair of pulleys,
The fermentation treatment apparatus is characterized in that the chain scoop speed and the chain angle are variable.

According to the present invention, the transfer speed of the pair of pulleys, the scoop speed of the chain, and the chain angle of the chain are made variable in accordance with the properties of the object to be processed, whereby the fermenter is adapted to the properties of the object to be processed. An appropriate fermentation treatment of the object can be performed in the inside.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 6 show an embodiment of a fermentation treatment apparatus according to the present invention.

As shown in FIGS. 1 to 6, a fermentation treatment apparatus 1 is provided with a fermentation tank 2 in which an object to be treated 8 composed of organic sludge or agricultural waste is stored, and is movably disposed in the fermentation tank 2. A stirring transfer device 10 for transferring and stirring the object 8 is provided.

The fermenter 2 has an inlet wall 2a and an outlet wall 2a.
b, and the outlet wall 2b can swing horizontally around the lower end and fall down.

The stirring and transferring device 10 disposed in the fermenter 2 has a pair of pulleys 11a and 11b, a chain 12 bridged between the pair of pulleys 11a and 11b, And a plurality of scoops 13 for scraping the processing object 8. One of each scoop
The tip of 3 is formed in a mountain shape, and the pulley 11b is provided with a rake portion 14 for scooping the workpiece 8 (see FIGS. 3 and 4).

Among the pair of pulleys 11a and 11b, the pulley 11a is a driving pulley, and the pair of pulleys 11a and 11b are required to travel in the fermenter 1 in the horizontal direction of FIG. I can do it.
Further, the chain 12 moves at a predetermined scoop speed Vs, and the chain 12 is inclined by a predetermined chain angle φ with respect to the horizontal direction.

The drive of the stirring transfer device 10 is controlled by the control device 5. The transfer speed Vm of the pair of pulleys 11a and 11b, the scoop speed Vs of the chain 12, and the chain angle of the chain 12 are controlled. φ is variable.

On the side of the inlet wall 2a of the fermenter 2, there is provided a measuring instrument 3 for measuring the water content, particle size, hardness, viscosity and temperature of the material 8 to be treated, and on the side of the outlet wall 2b. A measuring meter 4 for measuring the temperature of the object 8 is provided.

The signals from the measuring instruments 3 and 4 are input to the control device 5. Then, the control device 5 determines the water content, the particle size, the hardness, and the temperature of the workpiece 8 on the inlet wall 2a side input from the measuring meters 3 and 4 and the temperature of the workpiece 8 on the outlet wall 2b side. , As described above,
Drive control.

Although the measuring instrument 3 has a built-in measuring section for individually measuring the water content, particle size, hardness, viscosity and temperature of the object 8 to be treated, the measuring section 3 may be provided independently. Good.

Next, the operation of the present embodiment having the above configuration will be described.

First, an object to be treated 8 is introduced from the inlet wall 2a side of the fermenter 2. In this case, the material to be treated 8 is mixed with a moisture adjusting material in advance, and is adjusted to have a moisture content that facilitates fermentation.

Next, a pair of pulleys 11 of the stirring and moving device 10
a, 11b are traveling at a predetermined transport speed Vm in the arrow L ₁ in Fig. 1, during which Chen 12 moves at a predetermined scoop speed Vs. In this case, the processing object 8 in the fermenter 2 is first scooped up by the rake section 14 and guided to the scoop 13. Next, the processing object 8 in the scoop 13 is
2 to reach the pulley 11a and exit wall 2b
Fall to the side. By scooping the processing object 8 in the fermenter 2 by the rake unit 14 as described above, the residue of the processing object 8 can be eliminated.

In this way, the processing target portion 8 in the fermenter 2
While being agitated by the agitating and transferring device 10, is subjected to the fermentation treatment and sequentially sent to the outlet wall 2b side. Next, the outlet wall 2b is tilted in the horizontal direction, and the processed object 8 after the fermentation process is finished
It is discharged to the outside from the outlet wall 2b.

During this time, the water content, the particle size, the hardness, the viscosity, and the temperature of the treatment object 8 on the inlet wall 2a side are measured by the measuring meter 3, and the temperature on the outlet wall 2b side is measured by the measuring meter 4 at the same time. . The measured values from the measuring meters 3 and 4 are transmitted to the control device 5
And the stirring and moving device 10 is controlled by the control device 5,
Drive control is performed as shown in FIG.

A) When the water content is equal to or higher than a predetermined value: The chain angle (φ) of the chain 12 is made smaller than the reference value φref, and the scoop speed (Vs) of the chain 12 is set to the reference value Vs.
ref, and the transfer speed (Vm) of the pair of pulleys 11a, 11b is made larger than the reference value Vmref. Thereby, the pile height H of the workpiece 8 can be reduced, and the ventilation of the workpiece 8 can be sufficiently performed.

B) When the particle size is equal to or larger than a predetermined value The chain angle (φ) is made larger than the reference value φref, the scoop speed (Vs) is made larger than the reference value Vsref, and the transfer speed (Vm) is made smaller than the reference value Vmref. I do. By this operation, the crushing action of the article to be processed 8 occurs, and the particle size can be reduced.

C) When the hardness and viscosity are equal to or higher than predetermined values In order to prevent the load on the scoop from becoming excessive, the chain angle (φ) is made larger than the reference value φref, and the scoop speed is set to (Vs). The transfer speed (Vm) is set to the reference value Vs
ref and the reference value Vmref. By this operation, an excessive reaction force applied from the workpiece 8 can be reduced.

D) Temperature of the object to be treated Generally, when the object to be treated 8 is subjected to fermentation, the temperature of the object to be treated 8, which was at room temperature after the start of fermentation, rises and reaches a peak during the fermentation. . Thereafter, the temperature of the object 8 gradually decreases, and at the end of the fermentation process, the temperature of the object 8 returns to normal temperature.

Therefore, when the temperature near the inlet wall 2a of the object 8 is lower than the first appropriate temperature, it is determined that fermentation is not sufficiently performed, and only the object 8 is stirred. No transfer. For this reason, the chain angle (φ) is maximized, and a pair of pulleys 11a, 11b
Are alternately driven in the L1 direction of FIG. 5 and the L2 direction of FIG. By this operation, the fermentation can be promoted by increasing the residence time of the article 8 to be treated.

As shown in FIG. 5, a pair of pulleys 11a,
11b is moved in the direction of arrow L1.
Is moved in the direction of arrow L3. Also, as shown in FIG.
When the pair of pulleys 11a and 11b are caused to travel in the direction of arrow L2, the chain 12 is tilted in the direction opposite to that of FIG. 5 and moved in the direction of arrow L4.

When the temperature near the outlet wall 2b is higher than the second appropriate temperature, it is determined that the fermentation has not been completed, and
As in the case where the temperature near the inlet wall 2a is lower than the first appropriate temperature, only the object to be processed is agitated, and no transfer is performed.

When the temperature near the inlet wall 2a is lower than the first appropriate temperature, the pair of pulleys 11a and 11b are reciprocated only on the upstream side of the fermenter 2, and the temperature near the outlet wall 2b is lower than the second temperature. When the temperature is higher than the appropriate temperature, the pair of pulleys 11
a and 11b may be reciprocated only on the downstream side of the fermenter 2.

Next, another embodiment of the fermentation treatment apparatus according to the present invention will be described with reference to FIG.

In the fermentation treatment apparatus shown in FIG. 7, a pair of pulleys 11a and 11b are transferred by an inverter. That is, as shown in FIG. 7, a traveling platform 9 that supports a pair of pulleys 11 a and 11 b is provided on the fermenter 2 so as to be able to travel, and the traveling platform 9 is driven by the driving motor 7.

The drive motor 7 is connected to the control device 5 via the inverter 6, and the control device 5 changes the rotation speed of the drive motor 9 via the inverter 6 to change the transfer speed of the traveling platform 9. It has become. In this case, since the pair of pulleys 11a and 11b are supported by the traveling platform 9, the transport speed of the traveling platform 9 matches the transport speed of the pair of pulleys 11a and 11b.

[0035]

As described above, according to the present invention, an object to be treated can be appropriately fermented in a fermenter according to the properties of the object.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing one embodiment of a fermentation treatment apparatus according to the present invention.

FIG. 2 is a view showing the operation of an embodiment of the fermentation treatment apparatus according to the present invention.

FIG. 3 is a side view showing a stirring transfer device.

FIG. 4 is a plan view showing a stirring transfer device.

FIG. 5 is a diagram showing a reciprocating movement of the stirring transfer device.

FIG. 6 is a diagram showing a reciprocating movement of the stirring transfer device.

FIG. 7 is a view showing another embodiment of the fermentation treatment apparatus according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fermentation processing apparatus 2 Fermentation tank 3 Measuring meter 4 Measuring meter 5 Control device 10 Stirring transfer device 11a, 11b Pulley 12 Chain 13 Scoop 14 Rake section

Claims (6)

[Claims] 1. A fermenter in which an object to be treated consisting of organic sludge or agricultural waste is stored, a stirring / transfer device arranged in the fermenter, for transferring and stirring the object to be treated, and a stirring / transfer device. And a control device for controlling the drive. The stirring / transferring device includes a pair of pulleys, at least one of which is a driving pulley, a chain bridged between the pair of pulleys, and a plurality of scoops attached to the chain. A pair of pulleys travels in the fermenter at a predetermined transfer speed, the chain moves at a predetermined scoop speed, and the chain between the pair of pulleys is inclined by a predetermined chain angle with respect to the horizontal direction, A fermentation treatment apparatus, wherein a transfer speed of a pair of pulleys, a scoop speed of a chain, and a chain angle of the chain are variable. 2. A fermenter, wherein a moisture content meter for measuring the moisture content of the object to be treated is provided, and based on a signal from the moisture content meter, the control device, when the moisture content is equal to or more than a predetermined value, The fermentation treatment apparatus according to claim 1, wherein the transfer speed is controlled to be higher than the reference value, the scoop speed is controlled to be lower than the reference value, and the chain angle is controlled to be lower than the reference value. 3. A particle size measuring device for measuring a particle size of an object to be treated is provided in the fermenter, and based on a signal from the particle size measuring device,
The controller controls the transfer speed to be smaller than the reference value, the scoop speed to be larger than the reference value, and the chain angle to be larger than the reference value when the particle size is equal to or larger than the predetermined value. 2. The fermentation treatment apparatus according to 1. 4. A hardness meter for measuring the hardness of the object to be treated is provided in the fermenter, and based on a signal from the hardness meter,
2. The control device according to claim 1, wherein when the hardness is equal to or more than a predetermined value, the transfer speed is controlled to be smaller than the reference value, the scoop speed is set to be smaller than the reference value, and the chain angle is set to be larger than the reference value. The fermentation treatment apparatus according to claim 1. 5. A viscometer for measuring the viscosity of an object to be treated is provided in the fermenter, and based on a signal from the viscometer,
2. The control device according to claim 1, wherein when the viscosity is equal to or higher than a predetermined value, the transfer speed is controlled to be smaller than the reference value, the scoop speed is set to be lower than the reference value, and the chain angle is set to be larger than the reference value. The fermentation treatment apparatus according to claim 1. 6. A thermometer for measuring the temperature of the material to be treated is provided at an inlet and an outlet in the fermenter, and the controller is configured to control the temperature when the temperature of the material to be treated at the inlet of the fermenter is lower than the first appropriate temperature or for the fermentation. The fermentation treatment apparatus according to claim 1, wherein the pair of pulleys reciprocate in the fermentation tank when the temperature of the object to be treated at the tank outlet is higher than the second appropriate temperature.