JPH0618640Y2 - Vertical fermentation device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a vertical fermentation apparatus for fermenting a large amount of easily decomposable organic substances such as human waste, sewage sludge, fish ilia, and food sludge. Is.

[Conventional technology]

Conventionally, easily decomposable organic substances such as food sludge have been disposed of by dehydration to remove water and then incinerated, or by adding solidification agents such as cement to landfills. Has adopted a method that is effectively used as an organic fertilizer.

When it is used as an organic fertilizer, easily degradable organic matter such as food sludge is apt to rot easily, so if this is used directly in the fields, the organic matter will rot rapidly in the fertilized soil.
This decay consumes a large amount of oxygen in the soil,
Since fertilizers such as ammonia and hydrogen sulfide generate harmful gas to the growth of agricultural products, they are not directly fertilized.

Therefore, when utilizing easily degradable organic matter such as food sludge as a fertilizer, by stabilizing the biochemical properties of the easily degradable organic matter by adding a fermentation bacterium and performing a fermentation treatment while supplying an appropriate amount of air. It is always used.

[Problems to be solved by the device]

In this case, various types of fermenters have been developed and put to practical use in order to rapidly ferment organic matter, but conventional fermenters generally have a structure equipped with a stirring device such as cutting back or sending out the fermented substances. Most of them are complicated, and there are few that can be used easily. Moreover, the generation of offensive odor could not be controlled.

It is an object of the present invention to solve the above problems, and to provide a large-scale processing apparatus which has a simple structure and which rapidly completes a large amount of fermentation and does not generate a bad odor.

[Means for Solving the Problems]

In order to achieve the above object, the vertical fermentation apparatus of the present invention has the following configuration.

(1) A box-shaped main body having a downwardly expanding heat-retaining inclined side wall whose interior is vertically partitioned by an appropriate number of partition walls is provided. The device for scraping and assembling the product to the discharge port is provided below it through the cage-shaped support device that reciprocates in the direction.

(2) The scraping / assembling device is a screw for scraping out the product by moving it to one side by reciprocating laterally while rotating, and a rotary screw-like assembly for moving the scraped product in the axial direction and collecting it on the discharge port. Consists of a conveyor.

[Action]

The present invention is a structurally simple vertical type fermentation apparatus having no agitating device constructed as described above, and when this is used, it is first dehydrated from the upper part of the fermentation tank to a water content of 75% or less. Filling the inside of the fermenter with a degradable organic substance such as food sludge. Then, the organic substances packed in the fermentor will start fermenting while generating high heat of about 60 to 70 ° C.

After 1 to 2 days from the fermentation, when the organic matter falling in the lower layer scraping and collecting device is taken out of the tank, the organic matter in the fermentation tank forms a bridge in a state of being supported on the fern-like support device. The lower part of it is empty.

When the lower part becomes empty, the intake of air into the fermenter becomes good, and the fermenting is further vigorous, and the temperature reaches 80 ° C.

When treated while maintaining such a state, activities such as thermophilic actinomycetes that can withstand a high temperature of 80 ° C become active, and easily decomposable organic substances rapidly ferment and become biochemically stable within a short period of time. It becomes an odorless putrefaction substance with a low endogenous respiration rate. In this case, if the stirring is performed as in the conventional method, the high temperature actinomycetes and the like are killed and the mesophilic bacteria are increased, so that odor is generated.

When the cage-shaped support device is rocked back and forth, the organic bridge supported on the upper part is destroyed and falls to the lower part, and is discharged to the outside of the tank by the scraping and collecting device. By repeating the operation of bridge formation and destruction of this fern-like support device, the fermented product inside the fermentor moves downwards from top to bottom, and the fermentation reaction continues continuously due to the smooth movement of the fermented product. And it will be continued evenly,
Efficient fermentation and production of odorless fermentation products can be achieved.

〔Example〕

 Examples will be described with reference to the drawings.

FIG. 1 is a partially cutaway perspective view showing an embodiment of the present invention, and FIG.
The figure is a partially cutaway front view, FIG. 3 is a plan view of the same, and FIG. 4 is a front view of the same.

In the figure, reference numeral 1 denotes a box-shaped main body, which has a heat-retaining inclined side wall 1a with an enlarged lower portion, and the interior thereof is vertically partitioned by a suitable number of partition walls 1b. A raw material input port 1c is provided in the upper part of the box-shaped main body 1, and a lower part is provided with a scraping / collecting device 3 for discharging a product to the discharge port 1d via a cage-shaped supporting device 2 which reciprocates in the lateral direction. ing. In FIG. 1, A indicates a closed state and B indicates a lower state.

The child-shaped supporting device 2 includes a child-shaped cut-out frame 2a that reciprocates on the left and right rails on the pedestal via wheels, and is driven by a hydraulic device 2b.

The scraping and collecting device 3 includes a rotating screw-shaped collecting conveyor 3b driven by a driving unit 3c, and a belt 3d.
It consists of a scraping screw 3a that rotates while reciprocating by a traveling carriage 3e that reciprocates in the lateral direction via a blade. The powder falling from between the cutting frames 2a of the cage-shaped supporting device 2 is scraped to one side and gathered in the center. Then, it is dropped from the discharge port 1d.

In the above-mentioned configuration, the food sludge having a water content of 75% or less, which is charged from the raw material charging port 1c and filled in the tank, is abruptly (around two days before and after) due to the force of the air from the space below the cage-shaped support device 2. ) Fermentation at a high temperature of 80 ° C, resulting in an odorless fermentation product due to the action of actinomycetes and filamentous fungi resistant to high temperatures, dropping from between the fern-shaped support devices 2, and then expelled by the scraping and collecting device 3. It is collected on the outlet and discharged.

[Effect of device]

 The effects of the present invention are as follows.

(1) The structure is simple and a large amount of fermented material can be automatically processed for a short time.

(2) Rapid and odorless fermentation can be performed by the activity of actinomycetes at a high temperature of 80 ° C.

[Brief description of drawings]

The drawings show an example of the present invention. FIG. 1 is a partially cutaway perspective view, FIG. 2 is a partially cutaway front view, FIG. 3 is a plan view of essential parts, and FIG. It is a front view. Reference numerals in the drawings indicate the following members, respectively. 1: Box-shaped main body, 2: Sudden support device 3: Scraping and collecting device

Claims (2)

[Scope of utility model registration request] 1. A box-shaped body having a downwardly expanding heat-retaining inclined side wall, the interior of which is vertically partitioned by an appropriate number of partition walls, and a raw material inlet is provided at the top of the box-shaped body and at the bottom thereof. Is a vertical fermentation device equipped with a device for scraping and collecting products to the outlet through a cage-shaped support device that reciprocates laterally. 2. A scraping and gathering device wherein a scraping screw that reciprocates laterally while rotating to bring a product to one side and a rotary screw that moves the scraped product in the axial direction and collects it on a discharge port. The vertical fermentation apparatus according to claim 1, which comprises a strip-shaped collecting conveyor.