KR100711091B1 - Apparatus for fermenting food waste - Google Patents

Abstract

The present invention is to provide a food waste fermentation apparatus that can contribute to the improvement of the quality of fermented products by promoting the fermentation by mixing and recycling food waste, premature drying and decay prevention by maintaining consistency between premature and ripening, In this fermenter, a reversible type screw with an auxiliary vane for lifting food waste is installed at the tip, and when the screw is driven back while hot air and microorganisms are supplied, the auxiliary vane is recirculated by rolling up the food waste, and the stirring function is added. The nozzle-mounted hot air feeder is designed to stir the circulating food waste to promote fermentation by the microorganism's decomposition action and the warm air's smooth contact, and temporarily stops the hot air supply and microorganism input after finishing the premature process, By letting it go for a while It prevents premature drying and decay due to the air exposure of the whole house, and improves maturity. After finishing, it is characterized by a food waste fermentation device that can be taken out of the fermenter by the regular driving of the screw.

Description

Apparatus for fermenting food waste}

1 is a conceptual diagram of a food waste treatment facility including a fermentation apparatus of the present invention

2 is a longitudinal sectional view of the fermentation apparatus

3 is a side view of the same

Figure 4 is an excerpt of the tip of the screw

5 is an example of the flow of food waste seen from above

<Description of the symbols for the main parts of the drawings>

10: hopper device 20: shredder

30: fermenter 31: fermenter

32: screw 32a: auxiliary wing

33: hot air supply device 33b: tubular nozzle

34: filter 36: screw conveyor

37: microbial reservoir

The present invention relates to a food waste fermentation apparatus for the purpose of promoting fermentation, improving maturity and anti-corruption in the process of ripening, improving maturity by maintaining consistency of premature and ripening.

Conventional food waste fermentation system is equipped with a horizontal wing for stirring each layer on a tubular shaft capable of supplying hot air in an upright cylindrical fermenter, and the lowest horizontal wing is hollow, with a vertical bellows for stirring with a nozzle to blow hot air around. The food waste inlet is installed at the ceiling of the fermentation tank and the fermentation outlet is installed near the bottom. Food waste is put into the fermenter, and microorganisms are added to ferment by supplying hot air to the nozzle-equipped wings attached to the bottom of the tubular shaft. Fermentation begins at the bottom of the fermenter and gradually progresses to the upper layer over time.

It takes about 15 days for food waste to ferment in fermentation tanks. It is difficult to use it as organic fertilizer because it is not enough fermentation of food waste alone. Fermented products taken out of fermenter must be matured through organic ripening process, which takes about 20 days.

   In order to make the fermentation of food waste proceed more efficiently in the fermentation tank which stirs the charged food waste mechanically, the up and down exchange of food waste should be carried out.

By the way, when the food waste is stirred in a conventional tea built-in fermenter, the difference in the speed of the fermentation proceeds, but the upper food waste is lowered only up and down is not made. Because of this, fermentation is slow and does not ferment evenly throughout.

  In addition, fermentation tanks for food waste also have a considerable amount of dozens of tons per unit, like fermentation fermentation tanks, and as the fermentation proceeds, the water content decreases and becomes stiff, increasing the rolling resistance of the tea. Due to this, the mechanical life of the van was short.

On the other hand, after ripening in a place exposed outside the fermentation tank may be impeded to ripening due to the rapid drying, and if the quality of the organic fertilizer is degraded due to decay, odor also occurs.

The present invention is to provide a food waste fermentation apparatus that can contribute to the improvement of fermentation quality by promoting the fermentation by mixing and recirculating food waste, premature drying and decay prevention by maintaining consistency of premature and ripening.

The task is to use a square hopper fermenter, and in this fermenter, a screw with a reversible type and an auxiliary vane for lifting food waste is installed at the tip, and when the screw is driven back while hot air and microorganisms are supplied, the auxiliary vane lifts the food waste. The nozzle-mounted hot air supply unit with a whirlwind function and a churning function promotes fermentation by stirring the circulating food waste and smoothly contacting the microorganisms and the warm air, and temporarily stops the hot air supply and microorganism input after the pre-aging process. And leave it for a certain period of time without sudden change in the atmosphere, which leads to the process of ripening, thereby preventing premature drying and decay due to the exposure of the atmosphere of the whole house to increase the maturity, and after the ripening, the food that can be taken out of the fermenter by the regular driving of the screw. Achievement with a waste fermenter.

1 shows the fermentation apparatus 30 of the present invention in a hopper device 10 for temporarily storing the collected food waste and a crusher 20 for crushing and sorting foreign matters such as vinyl and then discharging only the waste food waste. A schematic plan view of the associated food waste treatment facility.

The hopper device 10 is a conventional hopper for transferring the temporarily stored food waste to the crush selector 20 using the screw conveyor 11, or the non-destructive dehydration of the food capsule and removal of magnetic metal, and preliminary Hopper with ripening function.

The lysate crushed in the crushing separator 20 is sorted from the pure food waste and discharged to another route, the pure food waste is sent to the fermentation device 30 to be fermented.

2 and 3, the fermentation tank 31 of the fermentation device 30 is a square hopper type. For example, a square fermentation tank having a diameter of one side with respect to a single-cylindrical cylinder has a large planar area, so that the amount of one charge and the fermentation process is higher. In consideration of this point, the fermentation tank 31 is a square hopper type. In the fermentation tank 31, the screw 32 is provided in the center of the lower end side of the gradient surface 31a. The screw 32 is a reversible type capable of forward and reverse driving. That is, it is a reversible screw that promotes fermentation by mixing by rotating the food waste by reverse driving during premature and after ripening, and forward driving when taken out of the fermented product of fully matured. The forward drive and reverse drive of the screw 32 can be performed by setting a motor (not shown) capable of forward and reverse drive as a power source.

4, the screw 32 has the auxiliary blade 32a at the front-end | tip. This auxiliary wing (32a) is attached in the axial direction at the end of the spiral wing, the food waste (including pre-cooked, after-cooked food) that is driven toward the tip in accordance with the reverse drive of the screw 32 inside the fermentation tank 31 It was attached to roll up with

2 and 3 again, a plurality of tubular nozzles 33b are radially attached to the rotary tubular horizontal axis 33a on the left and right sides of the screw 32 in the fermentation tank 31 to whisk the food waste while rotating to promote fermentation. Hot air supply device 33 is installed to introduce the hot air generated from the outside into the food waste to create a more energetic fermentation atmosphere.

In addition, the filter 32 is formed on the lower side of the screw 32 from the top with wood chip layers 34a and gravel layers 34b such as large rice or sawdust, and is generated from food waste during fermentation, and then toward the bottom of the fermentation tank 31. Allow the leachate to run off. And the aeration device 35 is installed in the gravel layer 34b to enable the purification of the leachate.

The upper part of the fermentation tank 31 is provided with a screw conveyor 36, a microorganism storage container 37, a fermentation gas exhaust port 38 for passing the selected food waste from the crushing separator 20, In the vicinity of the bottom, a leachate drain 39 is provided.

Returning to FIG. 1, the food waste in the hopper device 10 is sent to the shredding sorter 20 by the conveying means 41, 42 so that foreign matters such as vinyl, wood, plastic or metal chopsticks, and the like, such as tough fibers are crushed. . Here, the crushed foreign matter is separated and collected separately by the contaminant transport means 43, the food waste is introduced into the fermentation tank 31 via the transport means 44 and the screw conveyor 36.

After the quantity of food waste is filled, the hot air is supplied while the hot air supply device 33 is rotated, and the microorganism storage container 37 supplies an appropriate amount of microorganisms, and drives the screw 32 at a low speed. The tubular nozzle 33b of the hot air supply device 33 is rotated about the tubular horizontal axis 33a to whisk the food waste up and down with respect to the conventional vane which the horizontal wings stir the food waste to the side. Moreover, the food waste adjacent to the screw 32 is gradually moved toward the front end along the direction of arrow d1. When the food waste reaches the tip of the screw 32, it is pushed upward by the auxiliary vane 32a. As the series of food waste and churning continues, the food waste is mixed well in the fermentation tank 31 and evenly aged. Arrow d2 and arrow d3 of FIG. 5 illustrate the flow direction of the food waste, and d4 illustrates the direction (or range) of the food waste caused by the tubular nozzle 33b.

Primary fermentation, or premature ripening, takes about 15 days. After confirming that the predetermined time has elapsed and ripening, the supply of hot air and microorganisms is stopped. However, the screw 32 rotates the whole house while continuing to drive back as it has been done so far. The hot air supply is stopped after the aging has been completed. From this time, the interior of the fermenter (31) is very slowly and naturally cools down to the ripening process. This is the main reason for the fear of incomplete ripening and corruption caused by rapid changes in mood.

As described above, in the fermentation apparatus 30 of the present invention, all of the ripened fermentation tank 31 may be achieved. Therefore, the problem that the conventional problem that the odor and the deterioration of the quality was noticeable disappears at once due to the lack of ripening and the decayed wind due to the early cooling and drying to move to the outdoors to ripen.

On the other hand, the leaching water generated during the premature and after ripening process is cleared because the premature and ripened material is prevented from being washed out while passing through the filter 34. The leachate thus cleared again is aerated and purified by the aeration device 35 and discharged through the leachate drain 39. As the ripening is done in the fermentation tank 31, the matured fermented product is discharged to the outlet 32b by driving the screw 32. The discharged fermented product is loaded on the conveying means 45 and transferred to the storage.

As shown in FIG. 1, it is effective to arrange the fermentation tanks 31 in parallel and to design the food wastes through the fermentation process by sequentially feeding the food wastes according to the inflow amount of the food wastes.

As described above, the food waste fermentation apparatus of the present invention can proceed consistently after ripening degree in a stable atmosphere without rapid environmental change in the fermenter, so that there is no fear of premature drying and decay of the fermented product (preheated substance) in the ripening process. The quality of food waste can also be improved.

In addition, the food waste in the fermentation tank can be mixed by the spin of the screw and the nozzle of the hot air supply device, so that it is possible to promote fermentation and equal fermentation.

Claims (1)

It is installed in the fermentation tank 31 with the square hopper-type fermentation tank 31 and the auxiliary vane 32a for the lifting of food waste at the tip, and flows the food waste at the time of reverse driving, and fermented fermented product to the outside at the time of regular driving. Rotary hot air supply device 33 installed on the upper left and right sides of the screw 32 with the screw 32 to be carried out and the nozzle 33b having the function of whipping food waste on the rotary tubular transverse shaft 33a radially attached. ), And food waste fermentation apparatus comprising a filter (34) installed below the screw (32).

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