KR200435037Y1 - Fermentation device for food waste - Google Patents

Abstract

The present invention is capable of fermenting food waste completely by simple transverse conveyance of food waste without excluding vertical stirring vanes, which have a lot of problems in performing the role. In order to provide a fermentation device for food waste that can be efficiently fermented by continuous input of waste, and to provide a fermentation tank with a fermentation air supply device, a perforated plate formed with a horizontal cylinder groove for the cylinder at the pitch interval and fine holes perforated, A horizontal feed screw is installed in each cylinder groove to facilitate dehydration of food waste introduced into the intermittent lateral transfer of food waste by intermittent or simultaneous driving of the feed screws, and promote ripening fermentation. Dehydrated and fermented by transporting food waste at will Characterized by the strain is prevented and thus a long flower designs for enabling food waste fermentation device due to the load of the food waste.

Description

Fermentation device for food waste {Fermentation device for food waste}

1 is a longitudinal sectional view of the fermentation apparatus for food waste according to the present invention

2 is a cross-sectional view of FIG. 1

3 is a partial cross-sectional view taken along line B-B of FIG.

4 is a perspective view of the perforated plate

Figure 5 is a side view of the drive unit for the upper transfer screw

Figure 6 is a side view of the drive unit for the lower transfer screw

<Explanation of symbols for main parts of the drawings>

   10: fermentation tank 12a, 12b: space

15a, 15b: jacket 20a: upper perforated plate

20b: lower perforated plate 21: dewatering hole

22: screw groove 23a, 23b: termination

30a: upper transfer screw 30b: lower transfer screw

40a: upper motor 40b: lower motor

The present invention relates to a fermentation apparatus for food wastes, which can promote the fermentation of food wastes without the vertical stirring vanes, suppress the deformation of the transfer screw, and make it possible to design large-sized, and also make efficient fermentation by continuous feeding of food wastes. .

In the food waste treatment plant, the debris is put into the crushing sorter from the imported food waste, and dehydrated pure food waste with debris, such as vinyl debris, is dehydrated at an appropriate level of water content to be fed to livestock or fermented through pre-aging and ripening. Organic fertilizer.

In the fermentation system for food waste, at least one electric vertical stirring vane is installed in the fermentation tank, and near the bottom of the fermentation tank, the food waste fermented product driven down to one side is pulled up, and the food waste is fermented in cooperation with the vertical stirring vane. It is fermented by allowing water to circulate.

The vertical stirring vane periodically stirs the food waste in the fermenter to promote the fermentation by smoothly dispersing the internal air necessary for the fermentation and releasing the agglomerated food waste.The axle of the vertical stirring vane is designed to be higher as the amount of food waste fermentation is increased. Therefore, the elongation design and manufacture of the stirring vane is inevitable.

The biggest concern associated with lengthening agitator vanes is the deformation of the axle, ie the axle deflection. This is because the deformation of the stirred axle axle as the fermentation proceeds toward the lower part of the fermenter, the water content is lowered and the density is higher, acting as a large load on the lower part of the axle. The problem of this vertical stirring vane has been recognized as a big obstacle in the design of large-sized food waste fermentation system.

In addition, due to the circulation in the fermentation tank, the food waste fermentation product below the fermentation tank is mixed with the unfermented food waste product above the fermentation tank, and dehydration is slow, and the fermentation proceeds slowly.

In addition, continuous processing is also difficult because there is no space for subsequent food waste until it is completely fermented and discharged.

Therefore, the purpose of the present invention is to eliminate fermented foods with a large number of vertically stirred vanes. In addition, to provide a fermentation device for food waste that can be efficiently fermented by the continuous input of food waste.

The task is to install a perforated plate in which a fine hole is drilled in a fermentation tank in which a fermentation promoting air supply device is built, and a horizontal screw groove for a cylinder is formed at pitch intervals, and a horizontal feed screw is installed in each cylinder groove to intermittently or simultaneously transfer screws. The dehydration of food wastes introduced by intermittent lateral transfer of food wastes by driving is promoted smoothly and ripening fermentation is promoted, and the food wastes are transferred and dehydrated and fermented by transporting food wastes while the feeding screw is relied on the screw groove of the perforated plate. It can be achieved with a fermentation system for food waste, which prevents deformation due to and thus enables a lengthening design.

1 to 3, the food waste fermentation apparatus according to the present invention is based on the fermentation tank 10 and the upper and lower perforated plates (20a, 20b), a plurality of transfer screws (30).

The metal rectangular cylindrical fermentation tank 10 in which the food inlet 11 is installed at one side of the ceiling is provided with upper and lower perforated plates 20a and b for dividing the internal space up and down.

In FIG. 4, the upper and lower perforated plates 20a and 20b serve as a cylinder and a dewatering plate for the transfer screw in a screw conveyor in which the transfer screw is embedded in the cylinder, and the leachate of food waste is small enough to escape. The screw groove 22 is formed at a predetermined pitch in a direction orthogonal to the conveying direction of the food waste fed into the fermentation tank 10 in the perforated plate with fine dehydration holes 21 formed therein, Acting as a cylinder, the upper and lower perforated plate (20a, 20b) divides the inside of the fermentation tank (10) up and down and feed screw (30a) or (30b) to the screw groove 22 of each perforated plate (20a, 20b) ) Can shorten the length of the long fermentation tank, which is essential for the fermentation process from the input of food waste to ripening, to half its length. Transient is expected.

 1 to 3 again, the interior of the fermentation tank 10 toward the ends 23a and 23b of the upper and lower perforated plates 20a and 20b may be spaces in which premature fermented products or ripened fermented products, which are transported by steaming, may fall naturally. (12a, b). Among these, the upper space 12a is provided with an electric rotary scraper 50 to scrape down the food waste that does not fall down in time due to the condensed wind while leaving the terminal 23a of the perforated plate 20a. The space 12b toward the end 23b of the lower perforated plate 20b communicates with the fermentation product chamber 13. Reference numeral 60 denotes a fermentation product discharge means.

Under each perforated plate 20a, 20b, a jacket 15a, 15b is installed to receive the leachate falling from the perforated plate 20a, 20b. The leachate of each jacket 15a, 15b is discharged independently through the drain, or the leachate of the upper jacket 15a is connected by connecting the drain of the upper jacket 15a and the inlet of the lower jacket 15b with the conduit 16. The lower jacket 15b can be collected and discharged. Leachate collected in the lower jacket 15b is discharged to the drain 18.

In each of the jackets 15a and b, air supply pipes 19a and 19b are provided for supplying external air necessary for fermentation to the upper perforated plate 20a or the lower perforated plate 20b.

Transfer screws 30a and 30b are installed for each screw groove 22 of the upper and lower perforated plates 20a and 20b. One end of the upper transfer screw (30a) is rotatably installed on the side wall (17a) of the fermentation tank 10 of the inlet 11 side, the other end is installed to cross the inside of the fermentation tank 10 toward the end (23a) of the perforated plate (20a) It is rotatably installed in the bearing 14a. In addition, one end of the lower transfer screw (30b) is rotatably installed on the side wall (17b) of the fermentation tank 10 on the opposite side of the inlet (11) and the other end inside the fermentation tank (10) on the end 23b side of the perforated plate (20b). It installs rotatably on the bearing 14b installed across.

And the outer surface of the side wall 17a of the fermentation tank 10, the upper motor 40a for driving the upper transfer screw 30a, and the lower motor 40b for driving the lower transfer screw 30b on the outer surface of the other side wall 17b. Install.

The upper and lower motors 40a and 40b are installed in the same number as the upper and lower conveying screws 30a and 30b and individually driven, or two upper and lower conveying screws 30a and 30b are driven in a single set. The driving method can be varied by driving.

5 and 6 show an example thereof. That is, assuming that there are eight screw grooves 22 of the upper and lower perforated plates 20a and 20b and that upper or lower transfer screws 30a and 30b are installed in each of the screw grooves 22, the fermentation tank 10. Chain sprockets 31a and 31b are installed at the shaft ends of all the transfer screws 30a-1 to 30a-8 and 30b-1 to 30b-8 exposed by the side walls 17a and 17b of the first and third transfers. Screws 30a-1, 30a-3, 30b-1,

30b-3), 2nd, 4th transfer screw (30a-2,30a-4) (30b-2,30b-4), 5th, 7th transfer screw (30a-5,30a-7) (30b-5, 30b-7), 6th, 8th transfer screw (30a-6, 30a-8) (30b-6, 30b-

8) paired with a chain 32, and the motors 40a-1? 40a-4 and 40b-1? 40b-4 are installed one by one for each group of the transfer screw to drive the chain 31 of each group. It is.

In this way, if the upper and lower transfer screw (30a, 30b) can be divided into several groups and can be driven with a motor (40a, 40b) for each group, depending on the type of food waste, moisture content, one-time input, etc. For example, optimal fermentation conditions can be created by the sequential operation or batch operation of the feed screw.

While feeding the appropriate amount of food waste into the inlet 11 and injecting external air into the air supply pipe 19a, the upper motor 40a is sequentially operated or collectively operated to operate the upper feed screw 30a in groups or collectively. Drive. Grouping or collective driving of the upper transfer screw (30a) is a slow operation several times per hour, several rotations per day to dehydrate and desalination to a sufficient level necessary for fermentation until the food waste completely leaves the upper perforated plate (20a). Arrow a indicates the movement route of food waste, pre-fermented and ripened fermented products.

The introduced food waste is dewatered and fermented while being slowly transported toward the end 23a by the upper transfer screw 30a operating on the upper perforated plate 20a. The dewatered leachate is introduced into the upper jacket 15a through the dewatering hole 21 of the upper perforated plate 20a.

As described above, each time the upper conveying screw 30a is driven, the food waste introduced in advance corresponding to the moving portion of the upper perforated plate 20a creates an empty space in the plane. The food waste to be disposed of in the flat space is put in a proper amount to be subjected to subsequent dehydration, desalination and pre-aging.

By the end 23a of the upper perforated plate 20a, the food waste is changed into pre-fermented pre-fermented fermented product. The ripened fermentation product falls into the lower perforated plate 20b through the space 12a. At this time, while injecting external air into the air supply pipe 19b, the lower motor 40b is sequentially operated or collectively driven to drive the lower conveying screw 30b in groups or collectively. Group or batch drive of the lower transfer screw (30b) is also driven in a slow manner, such as several times per hour, several times per day to enable the ripened fermented product to become a mature fermented product when leaving the lower perforated plate (20b). .

The ripened fermented product is slowly dehydrated and dehydrated while being slowly transferred toward the end 23b of the lower perforated plate 20b by the lower transfer screw 30b. The leachate dehydrated in this process is introduced into the lower jacket 15b through the dehydration hole 21 of the lower perforated plate 20b, and the pre-fermented fermented product dropped earlier by the corresponding amount each time the lower transfer screw 30b is driven. As it moves, the first entry portion of the lower perforated plate 20b becomes empty in a plane. The planar empty space, followed by subsequent exclusive fermentation to be processed, is continuously introduced to allow for dehydration, desalination and premature processes.

The fully fermented fermentation product is dropped into the fermentation product chamber 13 and then discharged out of the fermentation tank 10 through the outlet 14.

The above-described fermentation apparatus for food waste of the present invention puts the food waste into the fermenter and feeds the food waste into the inlet while supplying air, and is then transferred along the perforated plate by the upper transfer screw and gradually dehydrated and dehydrated at the same time. It was dropped into the perforated plate to be fully fermented by subsequent dehydration, desalination, and ripening. The fermentation tank, which was inevitably highly designed from the input of food waste to the ripening, was dualized by pre-aging in the upper layer and ripening in the lower layer. The remodeled duplex reduces the footprint by half, facilitating design and fabrication.

In addition, unlike the vertical stirring vanes where the deformation of the axle, the stirring vane, and the fear of damage were high due to the concentration of food waste, the feeding screw was installed to rely on the screw groove of the perforated plate to prevent deformation of the feeding screw. do. In addition, since food waste is dehydrated and fermented in a timely manner by the transfer screw, fermentation is also very efficient since unfermented food waste is not likely to be mixed with fermented food waste.

In addition, due to the periodic transfer of food waste or pre-fermented fermented products by the transfer screw, an empty space is formed at the beginning of the upper perforated plate and the lower perforated plate, and the space can be used to continuously process the food waste or pre-fermented fermented product to be subsequently processed. Do.

Claims (4)

In the food waste that is fed into the fermentation tank through the inlet port is fed through the air supply pipe at a low speed with an electric transfer screw to be dehydrated and fermented out, and the leachate is collected in the jacket and discharged. The difference between the upper perforated plate 20a and the lower perforated plate 20b in which the fine dewatering hole 21 is drilled in the fermentation tank 10 and the screw grooves 22 are formed at a predetermined pitch interval in the direction perpendicular to the transport direction of the food waste. The upper transfer screw 30a is installed in each screw groove 22 of the upper perforated plate 20a, and the lower transfer screw 30b is rotatably installed in each cylinder groove 22 of the lower perforated plate 20b. And, the upper transfer screw (30a) and the lower transfer screw (30b) is a fermentation apparatus for food waste, characterized in that driven by the upper motor 40a, the lower motor (40b) installed outside the fermentation tank (10). The terminal 23a of the upper perforated plate 20a is heated to secure a space 12a for dropping the ripened fermentation product, and the terminal 23b of the lower perforated plate 20b is steamed to discharge the ripened fermented product. Fermentation apparatus for food waste in the space (12b). The food waste fermentation apparatus according to claim 1, wherein an upper jacket (15a) is installed under the upper perforated plate (20a), and a lower jacket (15b) is installed under the lower perforated plate (20b). According to claim 1, the upper motor (40a) is installed so as to operate the plurality of upper transfer screw (30a) for each group, the lower motor (40b) food waste is installed to operate the plurality of lower transfer screw (30b) for each group Fermentation device for.

Images