KR20050108633A - Drying and fermenting device for waste food - Google Patents

Abstract

The present invention relates to a drying and fermentation apparatus for the treatment of food waste that can be dried, fermented food waste to compost and feed, minimize the fuel economy by using the heat medium and optimize fermentation and drying efficiency, drying the food waste A fermentation, composting and feed drying device, each housing is disposed adjacent to each other continuously, and having a fermentation chamber inside the housing, at least two or more with a stirring section for stirring food waste inside each fermentation chamber Drying means; A heating medium installed at a lower side of the fermentation chamber of the drying means to heat food waste and to dry and ferment the food waste; It is achieved to have a technical feature consisting of; transport means for transporting food waste in accordance with the fermentation and drying conditions are installed between the adjacent drying means.

Description

Drying and fermenting device for waste food

The present invention relates to a drying and fermentation apparatus for the treatment of food waste, and more specifically, to dry and ferment food waste to compost and feed, to minimize fuel consumption by using a heat medium to optimize fermentation and drying efficiency It relates to a drying and fermentation apparatus for the treatment of food waste.

In addition, the present invention relates to a drying, fermentation apparatus that can effectively treat not only food waste, but also livestock farms or various organic waste, sludge of sewage treatment plants.

Conventionally, food waste generated from general households or entertainment establishments, or sludge generated from livestock farms and sewage treatment plants are disposed of in rivers or disposed of in landfills, whereby these wastes and leachate contained in them contaminate rivers, groundwater and soil. Had a problem.

For example, general food waste should be discharged in bags with dry food without leachable water according to the food waste disposal method, but the general household and food stores collect food and take a long time to dry it. There is still a problem that most of them pollute the environment by leaving the water remaining.

Therefore, in recent years, in view of these problems, in particular, various devices have been developed in order to effectively handle food waste and garbage. These devices are small to be installed separately in each home or restaurant, and collected from each region. A large-capacity treatment apparatus for treating waste and various sludges discharged from garbage or livestock farms has been developed and installed in various forms.

For example, looking at Korean Patent No. 217770, one example of a food waste treatment method and treatment system can be found. Such a system evenly stirs and dilutes one or more pulverizers and crushed food waste contained in the supplied food waste and crushed chunks of fish and the like, and precipitates and filters foreign substances such as stones, glass or metal chips. The inside of the grinding means including a dilution stirrer, the compressed conveying device to remove the moisture by compressing while continuously transporting the solids in the crushed and foreign matter filtered food waste and centrifugal force to remove the water contained in the desorption and diluent Dehydration means including a centrifugal separator, and a mobile stirrer for stirring and transporting the fermentation chamber to be composted by fermentation and drying as the solids, which are crushed and dehydrated food waste, are transported and the composted solids moving in the fermentation chamber. It consists of fermentation means, including.

However, in the case of a mobile stirring apparatus applied to such a system, a steam tube and a hot air tube are provided in the fermentation chamber to dry and ferment food waste put into the fermentation chamber, but it is difficult to obtain an appropriate amount of moisture required for fermentation. There is a problem that the quality of compost falls down poorly.

In other words, even if food waste is dehydrated through the dehydration means, it contains some water. By the way, the conventional stirring transfer device has a problem that the water is saturated by spraying steam to the food waste, and thus, due to too much moisture, it is difficult to properly fermentation.

In addition, this water saturation state requires a lot of time and expense in drying food waste, and thus there is a problem more difficult to achieve optimal composting.

In addition, the conventional apparatus uses electricity or heavy oil as a heat source, and obtains high heat therefrom to allow drying and fermentation. However, there is a problem in that fuel consumption is excessive compared to the efficiency of processing food, When operating for a long time in the space of the fermentation chamber, the efficiency of composting is lowered, the odor generated during the fermentation process is deposited, there is a problem that does not have a function to remove it.

The present invention has been made in view of the above-described conventional problems, and an object thereof is to continuously arrange at least two or more drying means each having a fermentation chamber, and vary the temperature in each of the drying means by fermentation time or food It is to provide a drying, fermentation apparatus for the treatment of food waste to be sequentially moved according to the amount and condition and to be fermented and dried.

Another object of the present invention is to provide a drying, fermentation apparatus for the treatment of food waste to be a high temperature, high speed fermentation, and to perform a series of fermentation and drying process mechanically automatic.

Another object of the present invention is to heat and ferment the heat medium as a heat source, thereby reducing fuel consumption, and equipped with a plurality of heat exchangers and condensers to effectively remove odors and condensate generated from food waste, as well as inside the apparatus To provide a drying and fermentation system for the disposal of food waste that does not pollute the surrounding environment.

The object of the present invention is a drying apparatus for drying and fermenting food waste to compost feed, each housing is disposed adjacent to each other continuously, and provided with a fermentation chamber in the interior of the housing, each food waste inside the fermentation chamber At least two drying means equipped with a stirring portion to stir; A heating medium installed at a lower side of the fermentation chamber of the drying means to heat food waste and to dry and ferment the food waste; It is achieved to have a technical feature consisting of; transport means for transporting food waste in accordance with the fermentation and drying conditions are installed between the adjacent drying means.

Preferably, the fermentation drying apparatus of the present invention has a main purpose of food processing, but this is just one example, and for other purposes, for example, by-products generated from concentrated farms and sludge generated in various sludge or sewage treatment plants are effectively treated. I can see that I can.

That is, the drying and fermentation apparatus of the present invention is not only food waste, but also organic wastes such as livestock manure, and aquaculture such as scallop, ethanol, soybean meal, starch meal, non-fat meal, skim steel, fish guts, slaughter waste, rice bran It is a device for composting and feed using organic waste and livestock by-products that can make compost or feed using by-products.

In the drawings, the drying and fermentation apparatus of the present invention is composed of at least two drying means, preferably consisting of first, second, and third drying means, while varying the temperature in the fermentation chamber formed in each of them, By adjusting the fermentation and drying to be effective, it would be more effective to apply to the food treatment system as shown in FIG.

Of course, such a treatment system is only one example, and may be applied to other types and structures of the system, and may be used independently.

Hereinafter, the preferred embodiment of the present invention based on the state applied to the food processing system as follows.

1 is a side view showing an example of a food waste treatment system to which the drying and fermentation apparatus of the present invention is applied, and FIG. 2 is a side view showing an example of the drying and fermentation apparatus according to the present invention, and FIG. In accordance with the drying, fermentation apparatus is shown in one side cross-sectional view.

In addition, Figure 4 is one side cross-sectional view showing an example of the drying, fermentation apparatus housing according to the invention, Figure 5 is a cross-sectional view showing an example of the food waste transport means applied to the drying, fermentation apparatus of the present invention, Figure 6 Is an enlarged cross-sectional view of the main portion of the present invention.

In the drawing, the food waste treatment system 1 includes food input storage means 10 for storing and storing food waste and waste or various sludges, and first dehydration means for dewatering food supplied from the input storage means 10 first. 20, the salt dilution means 30 for diluting the salt by mixing food and water dehydrated through the first dehydration means 20, and the food waste in which the salt is diluted, and dewatering liquid is described later. The second dehydration means 40 for supplying the dehydrating liquid drying means, and supplies the dehydrated food to the drying, fermentation apparatus 100 of the present invention, and the food dehydrated through the second dehydration means 40 However, according to the amount, type or local conditions of food, the first, second and third drying means for drying the food by heating from low temperature, high temperature, low temperature, or gradually from a high temperature to a low temperature. It consists of a drying, fermentation apparatus of the present invention consisting of 10) (120, 130).

In addition, the temporary storage means 500 for storing and cooling the product obtained by the present invention for a predetermined time, and the sorting means 60 for filtering various foreign matter from the product, the desorption liquid supplied from the secondary dewatering means Desorption liquid drying apparatus 70 for drying the system is also provided.

The input storage means 10 is composed of a hopper 11 which is opened and closed at the top and a deodorizing portion 12 connected to the hopper 11 to remove odors emitted from food, the hopper 11 is a first Is connected to the dehydration means 20 is a configuration for transporting food.

The deodorizing unit 12 is composed of a pump 12a and a chamber 12b through which the deodorizing liquid is supplied through the pump 12a. Although the chamber 12b is not shown in the drawings, the filter and Deodorant liquid is filled.

The first dewatering means 20 dehydrates the water contained in the food primarily and supplies it to the dilution means 30, the water generated at this time is supplied to the desorption liquid dryer 70 through the pipe 200, this process Will first remove the salt contained in the food waste.

Here, the first dehydration means and the second dehydration means to be described later, for example, using the principle of a general dehydrator, a method using a pressure method or centrifugal force may be employed.

The salt dilution means 30 is composed of a dilution tank 31 and a water supply portion 32 for supplying water to the dilution tank 31, the water supply portion 32 is a constant, as well as groundwater or heavy water Preferably, the ratio of food waste and water is 1: 1, and the mixture is mixed with the stirring blade 33 installed inside the tank 31 so that the salt is diluted, and the second dehydration means 40 is used again. To feed.

The second dehydration means 40 removes water from the food waste that has passed through the dilution means 30, and supplies the water to the desorption dryer 70, and dryes and removes the food waste from which the water is removed. 100).

On the other hand, the journal storage means 50 is to store the food waste, that is, composted, feed product passed through the dry fermentation device for a predetermined time to be cooled, the stirring blade 52 is provided inside the main body 51 Configuration.

In addition, the sorting means 60 is erected in the longitudinal direction in the center of the guide plate 61 is installed in the bottom of the main body 51 of the temporary storage means 50 and both side walls 62 of the guide plate 61. The separation plate 63 and the bottom of the guide plate 61 is provided with a vibrator 64 to vibrate the guide plate 61 to filter foreign matters having different specific gravity.

The sorting means 60 of this configuration is to vibrate the guide plate 61 to filter foreign matter. In other words, when heat is applied to food waste from the first to the third through the drying and fermentation apparatus of the present invention, the food waste is gradually solidified. At this time, the foreign matter contained in the food waste is changed by changing its melting temperature. They are bunched together.

For example, when the plastic is put in the food waste, the plastic melts, unlike the food, and they are solidified and bundled, and are discharged to the guide plate 51 in a state having a specific gravity different from that of the food.

On the other hand, the desorption liquid dryer 70 is to dry the desorption liquid supplied from the first dewatering means 20 and the second dewatering means 40 to prevent the discharge of food waste to the outside, first, the dryer 70 ), A heat medium 71, a plurality of heat exchangers 72 and a condenser 73 are provided, a water reservoir 74 is provided on the front side, and a stirring blade 75 is provided inside.

The reservoir 74 is connected to the first dehydration means 20 and the second dehydration means 40 and the pipe 101 so that the desorption liquid supplied therefrom is stored, and the reservoir 101 is stored in the reservoir 101. The desorption liquid is supplied to the dryer through the pump 101a to allow drying.

Drying and fermentation apparatus of the present invention is composed of at least two or more drying means and the transfer means for connecting the drying means to transport the food waste to the next drying means, preferably the drying means is composed of three drying And to be made fermentation, these three drying means 100, 200, 300 is made of the same configuration.

3 and 4 are attached to the first drying means 100, referring to the configuration of the drying means with reference to this, the housing 110, the fermentation chamber 111 is formed therein and the food waste to stir Agitator 120 and drive motor 130 for rotating the agitator, heat medium 140 for heating and drying food waste to be dried and fermentation, heat exchange to force the convection of heat in the fermentation chamber to perform heat exchange Unit 140 and condenser 150.

The housing 110 is manufactured in a suitable size in consideration of the collection amount of food waste, the local environment, the food 112 can be put into the fermentation chamber 111 is provided with an inlet 112 is opened and closed by the opening and closing door 113 at the top. And, the stirring unit 120 is installed across the center.

The stirring unit 120 is connected to the drive motor 130, consists of a rotating shaft 121 is installed through the center of the housing and the stirring blade 122 installed on the outer periphery of the rotating shaft 121, The stirring blade 122 is composed of two stages.

The stirring blade 122 is fixed by the support 123 is installed on the outer periphery of the rotary shaft 121 in the form of a screw wound, the outer diameter has an outer diameter that can be almost filled in the fermentation chamber 111 This is to ensure that the food waste is stirred without remaining in the fermentation chamber (111).

In addition, the upper and lower stacking of the stirring blade 122 to the support 123 is to increase the stirring efficiency, the stirring blade is made of twisted flat iron, that is, twisted flat iron. Of course, this form is an example and may be manufactured in another form.

The sprocket 131 is installed at one end of the rotating shaft 121 to transmit the rotational force of the motor 130 by a chain driving method, but a belt or gear transmission method may be applied instead of the chain transmission method.

The heat medium 140 for providing heat to the fermentation chamber 111 is installed on the lower side of the fermentation chamber to heat the inside, the heat medium 130 is very excellent in the conversion stability and thermal safety is not generated carbonized precipitate and sludge , The metal material is not corroded to extend the life of the facility, that is, the first drying means housing 110, and there is no risk of fire due to the high natural ignition point.

In addition, the heat medium has an excellent thermal stability has a very high use temperature range, the most important fuel economy saving effect is very excellent compared to other heat sources. On the other hand, the heat medium 140 is formed on the lower side of the housing 110 is a jacket 140a filled with a heat source, for example, oil, gas, oil, heat medium oil, etc., the heat source is supplied to generate heat, on the other hand the housing An additional fuel auxiliary tank communicating with the jacket may be installed on the outside.

The heat exchanger 150 and the condenser 160 forcibly convection heat inside the fermentation chamber to allow heat exchange and to generate condensate, each of which consists of a pipe, that is, a pipe 101.

Here, the drying and fermentation apparatus of the present invention is provided with a plurality of heat exchangers and condensers, for the purpose of maximizing efficiency.

On the other hand, each of the lower side wall 114 of the housing is provided with a door 115, 116 to enable the insertion and transfer, these doors are configured to open in one direction.

For example, in the case of the input door 115 that accepts food waste, it is only to be opened to the inside of the fermentation chamber so that the input is possible, and the outflow to the outside is prevented. Of course, in the case of the discharge door 116 it is configured to open to the outside of the fermentation chamber 111 on the contrary to the above to free the discharge and prevent re-introduction to the reverse.

A transfer means 400 is installed between the input door 115 and the discharge door 116, that is, two adjacent drying means, which transfer food to the inner space 420 of the main body 410. The conveying screw 430 to convey is configured to be installed.

In addition, the inlet 411 and the outlet 412 is formed in the main body 410, the inlet is connected to the discharge door 116 formed in the housing, the outlet is connected to the input door 115 of the other drying means adjacent to The screw 430 is connected to the drive motor 440 to rotate the drive motor 440 as a power source and to transport food.

For example, the food introduced through the inlet 411 connected to the door of the first drying means 100 is forcibly transferred to the screw 430 rotating by the motor 440 to the adjacent second drying means 200. It is forced to push.

On the other hand, the drying means other than the first drying means 100, that is, the second, third drying means 200, 300 has the same structure as the first drying means.

That is, each of these drying means is provided with fermentation chambers 211 and 311 inside the housings 210 and 310, and the rotary shafts 221 and 321 and the wings 222 and 322 across the inside of the fermentation chamber. Agitator 220, 320 is configured to be mounted, the rotary shaft is provided with a sprocket 231, 331 is connected to the drive motor 230, 330 and rotated, respectively, the heat medium 240, 340 ) And a plurality of heat exchangers 250, 350, and condenser 260, 360, and each of the input and discharge doors 215 and 216 is provided.

The drying and fermentation apparatus of the present invention having such a configuration can be effective drying by varying the temperature of the drying means, for example, the first drying means is low temperature, the second drying means is high temperature and the third drying Means may be maintained at these intermediate temperatures to allow drying and fermentation.

Of course, this is one example of this type and can vary at all times according to the food waste, preferred drying, fermentation temperature is about 80 ~ 120 ℃ and the time to stay in one drying means is 2 to 4 hours all drying means 100 The ideal time for the product to be completed through, 200 and 300 is 7 to 12 hours.

On the other hand, the drying means is preferably the first, second, third drying means, that is, the food is dried and fermented over the first, second and third times as shown in the drawing, but the capacity of the system and regional factors or food waste Depending on the amount, only the first and second drying means may be employed, and on the contrary, additional fourth drying means may be added.

The drying and fermentation apparatus of the present invention having the above configuration makes composting and feed food waste to be used again, as well as reducing the environmental pollution.

First, when the worker puts the food waste collected by region into the input storage hopper 11, the system 1 starts to operate. First, the food waste stored in the hopper 11 is stirred by the stirring blades 14, and after a predetermined time, the food waste is transferred to the first dewatering means 20.

The first dehydration means 20 to remove the water of the food primarily and supply it to the dilution means 30, the water and the desorption liquid at this time is sent to the reservoir 101 to be collected there.

When the food waste is put into the dilution means 30, the water supply unit 32 operates to supply water, and at the same time, the stirring blade 33 in the tank 31 mixes the water and food to dilute, that is, salt This is diluted to transfer it back to the second dehydration means (40).

The second dewatering means 40 again removes the water of the food and supplies it to the first drying means 100 side of the present invention, similar to the first dewatering means 20, the water and the desorption liquid reservoir 101 In addition to the supply, the food waste supplied to the first drying means 100 is heated by the heat medium 140, dried, fermentation is made.

Preferably, the internal temperature of the fermentation chamber 111 of the first drying means 100 is gradually started to start drying and fermentation at a lower temperature than the other two drying means.

When food waste is put into the fermentation chamber 111, the driving motor 130 is driven to rotate the rotating shaft 121, and at the same time, the stirring blade 122 rotates to mix the food waste evenly.

After a certain time, the food waste is introduced into the inlet 411 side of the transport means, that is, the discharge door 116 is opened, the introduced food waste is forcibly transferred through the screw 430 to the adjacent second dry Forced flow into the input door 115 side of the means (200).

The second drying means is maintained at a temperature higher than that of the first drying means for about 3 to 4 hours to allow fermentation and drying of at least 80% or more. Of course, in the second drying means, the stirring blade 222 rotates in the same manner as the first drying means to stir the food waste, and after a predetermined time, that is, the above-described process, that is, the third drying means (the transfer means 200). 300) to ensure complete fermentation and drying, the composted and feed product is finally completed.

Of course, such a method is an example, and may be used to gradually lower the first drying means at a high temperature according to food waste or state, and the same temperature of the first, second and third drying means may be used. The fermentation can also be maintained.

In addition, each of the drying means 100, 200, 300 can be made effective treatment by varying the residence time, in this case to adjust the opening angle of the discharge doors (116, 216, 316). .

On the other hand, during such fermentation and drying process, the heat exchanger (150, 250, 350) is forced to send out the air in the fermentation chamber to exchange heat with the atmosphere, at this time, the odor contained in the internal air is also sucked together and processed through the pipe And condensers 160, 260, 360 condense it to drain.

The product passing through the third drying means is supplied to the temporary storage means 50 to be cooled, and flows out through the sorter 60, and the guide plate 61 of the sorter 60 is a vibrator 64. By vibrating) to filter out various foreign matters having different specific gravity, it is transported through the conveyor 210 to be shipped.

As described above, the fermentation and drying apparatus of the present invention sequentially arranges at least two housings each of which can adjust the temperature and residence time, thereby sequentially moving according to the amount and state of food waste, so that efficient fermentation and drying are achieved. It has the effect that a series of fermentation and drying processes can be performed automatically and mechanically.

In addition, the present invention has the effect of reducing the fuel consumption by using the heat medium as a heat source, effectively removes the odor generated from food waste, and does not pollute the environment as well as the inside of the device.

1 is a side view of a food waste treatment system to which the present invention fermentation device is applied;

Figure 2 is a side view showing an example of a drying, fermentation apparatus according to the present invention,

Figure 3 is a side cross-sectional view showing the interior of the drying, fermentation apparatus according to the present invention,

Figure 4 is a side view of the drying, fermentation apparatus according to the present invention,

Figure 5 is a side cross-sectional view showing an example of a drying, fermentation apparatus housing according to the present invention,

Figure 6 is a side view showing an example of the stirring unit applied to the present invention,

Figure 7a, b is a cross-sectional view showing an example of food waste transport means applied to the drying, fermentation apparatus of the present invention,

* Explanation of symbols for the main parts of the drawings

1: Processing system 10: Input storage means

11: hopper 20: first dewatering means

30: dilution means 32: water supply

40: second dewatering means 100: first drying means

200: second drying means 300: third drying means

111, 211, 311: fermentation chamber 120, 220, 320: stirring section

140, 240, 340: heat medium

Claims (7)

As a drying device that composts and feeds food waste by drying and fermenting it, At least two drying means in which each housing is continuously disposed adjacent to each other, having a fermentation chamber inside the housing, and having a stirring portion for stirring food waste in the fermentation chamber; A heating medium installed at the lower side of each fermentation chamber of the drying means to heat food waste and to dry and ferment the food waste; Transfer means installed between housings of adjacent drying means for forcibly transferring food waste according to fermentation and drying conditions; Comprising a plurality of heat exchangers for forced heat convection of the internal air of the fermentation chamber and a plurality of condensers to condense the internal steam of the fermentation chamber to produce condensed water, Here, the drying, fermentation apparatus for the treatment of food waste, characterized in that by changing the internal temperature of each fermentation chamber of the drying means, by varying the residence time to move the food waste according to the fermentation and drying conditions, the fermentation is made . According to claim 1, wherein each of the drying means is provided with a discharge door and an input door on both side walls of the lower side of the housing, the transfer means therebetween, each of the housing of the transfer means is provided with an inlet and an outlet The inlet is a discharge door and the outlet is configured to be connected to the adjacent inlet door, the drying, fermentation apparatus for the treatment of food waste, including the forced conveyance of food waste by a screw mounted inside the housing. According to claim 1, wherein the housing of the drying means is provided with an opening and closing door capable of injecting food waste on the upper side, a jacket for storing fuel supplied to the heat medium is installed on the lower side, the jacket is connected to the outside of the housing Drying and fermentation apparatus for the treatment of food waste, characterized in that the auxiliary tank for replenishing the fuel. The stirring blade of claim 1, wherein the stirring part is connected to a rotating shaft connected to a motor installed on an outer side of the housing, a support installed at equal intervals on the outer circumference of the rotating shaft, and a stirring blade fixed to the support by twisting flat iron in a screw form. Drying, fermentation apparatus for food waste treatment comprising a plurality of stirring blades are provided on each of the upper and central portions of the support. The method of claim 1, wherein the heat medium is a drying, fermentation apparatus for food waste treatment comprising using any one of a gas, heat medium oil, oil as a heat source. According to claim 1 or 2, wherein each of the drying means is provided with a discharge door and an input door on each side of the lower wall of the housing means, the discharge door is opened only outward of the housing, the input door is inward of the housing Drying, fermentation apparatus for processing food waste, including only opening to prevent backflow of food waste. As a drying device that composts and feeds food waste by drying and fermenting it, The fermentation chamber is provided in the housing, and the fermentation chamber is composed of first, second and third drying means equipped with a stirring blade rotating by a motor and stirring food waste. Each of the drying means is installed adjacent to the housing, each housing is provided with a discharge door and an input door are arranged in the form of facing each other, and the food is discharged through the discharge door is mounted inside the screw between these doors Transport means for feeding and transporting the waste to the input door side of the adjacent drying means is provided, Heat medium is installed inside each fermentation chamber to heat food waste to dry and ferment. Consisting of a plurality of heat exchangers to force the convection of the air inside the fermentation chamber during the fermentation and drying to perform heat exchange, and a plurality of condensers to condense the internal steam of the fermentation chamber to produce condensed water, Here, the drying, fermentation apparatus for the treatment of food waste, characterized in that by changing the internal temperature of each fermentation chamber of the drying means, by varying the residence time to move the food waste according to the fermentation and drying conditions, the fermentation is made .