KR101162344B1 - A Food Waste Recycling Apparatus - Google Patents

Abstract

The present invention relates to a food waste processing apparatus that decomposes and crushes food waste using yeast and reused as feed or fertilizer, and includes an inlet 11 through which food waste is input, and a pair therein. A main body 10 in which the stirring tank 12 is installed; A rotating shaft 20 installed in the longitudinal direction of the pair of agitating tanks 12 and provided with a plurality of impellers 21 having pads attached to respective ends thereof along the outer circumferential surface thereof; Heating tubes 30 installed on the bottom surfaces of the pair of stirring vessels 12 and flowing a heat medium made of oil therein; It is the technical feature of having the boiler 40 which heats a heating medium and supplies it to the said heating pipe 30.

The present invention can process a large amount of food waste at the same time as described above, can reduce the odor generated in the process of disassembling food waste, and also because food waste does not stick to the inner wall of the agitator tank improves the productability do.

Food waste, yeast, feed, reprocessing

Description

Food Waste Recycling Apparatus}

The present invention relates to a food waste decomposition processing apparatus for reprocessing food waste discharged from homes or restaurants, etc. to be recycled as animal feed, and more particularly, to process a large amount of food waste at once. At the same time, the present invention relates to a food waste decomposition processing apparatus having high processing efficiency.

Most of the food waste collected from ordinary homes or restaurants is disposed of in landfills, and landfills are treated with landfills because the environmental pollution caused by leachate from landfills is severe and severe odors are generated. Reluctance has many challenges in selecting food waste landfills.

In order to solve such a problem, a method of recycling food waste without landfilling has recently been studied. As a representative method, a method of properly treating food waste and recycling it as livestock feed and fertilizer has been discussed.

As such, as a reprocessing method for utilizing food waste as feed or fertilizer of livestock, various kinds of food processing apparatuses for crushing, decomposing and / or drying food waste have been developed.

One method of treating food waste is a biodegradation method, in which food waste is put into a digester together with yeast that breaks down food, so that food is broken down by the action of yeast, and food waste is caused by the yeast's action. It is a method of removing and reprocessing the water contained in the decomposed food waste by heating the decomposed food waste by using a boiler to recycle the decomposed food waste in the gel state. .

As an example of the food waste processing apparatus to which such a method is applied, the applicant's patent 0727619 (food waste processing apparatus) is mentioned.

As described above, the stirring impeller 100 coupled to the impeller holder 110 installed on the drive shaft 111 is composed of a soft material such as synthetic rubber, and the decomposition tank 120 and the finishing tank 130 as shown in FIG. ) Is installed to be in close contact with the wall surface of the partition plate 140, and is installed to face the stirring impeller 100 coupled to the neighboring impeller holder 110 in a "八" shape.

This means that the enzyme is added to the food waste and stirred, and in the process of the agitation, the food waste is crushed and biologically decomposed so that it can be reused as a feed or fertilizer for livestock.

However, the above technique tends to accumulate as food residues in the decomposition tank 120 move in one direction by the rotation of the impeller, whereby the food residues in the opposite direction, which become relatively thin, are quickly heated by the heating means. While being burned or pressed, the food residue is stuck to the inside of the digestion tank 120, so it takes a long time because the work to remove it.

In addition, the finished food residue does not have a means for the worker to discharge the finished food waste in the disassembling tank 120 or the finishing tank 130 to the outside of the device, so that the worker can remove the food waste inside the device. There is a problem to be scooped out by hand, and moreover, the burnt food residue cannot be used as a fertilizer or feed, so it is cumbersome to separate the same, and the burned food residue reduces the recycling efficiency of food waste. .

Accordingly, the present applicant has developed Korean Patent No. 0852240 (Feed and Fertilizer Regeneration Treatment Device Using Food Residue) to solve the above problem.

As shown in FIG. 2, the drive shaft 210 is installed in the conical body 200 in the longitudinal direction of the main body 200, and a pad 221 is attached to the end of the drive shaft 210. The impeller 220 is installed in a zigzag form, the discharge port 230 is provided in the lower portion of the main body 200, the nozzle outside the bottom of the main body 200 is provided with a nozzle for injecting steam connected to the boiler material Steam is directly supplied to the surface.

However, since the main body has a conical structure and there is only one driving shaft with an impeller, it is difficult to process a large amount of food waste at once, and the pad installed at the end of the impeller has the same shape as the inner wall of the main body. Since the food waste is mixed and agitated by the pad because it is rotated along the inner wall of the main body, it is difficult to move back and forth through the main body, and the steam is injected directly from the upper part of the main body toward the food waste. There is a problem that the nozzle is clogged by trash and should be cleaned frequently.

In order to solve this problem, a method of heating an internal food waste by installing an electric heater or the like on the lower outer surface of the main body is adopted, but in this case, the food waste inside the digester is rotated in one direction by the impeller. As it moves, it accumulates on one side, and a relatively small amount of food waste remains on the inner wall of the other side. When the digester is heated with an electric heater, a small amount of food waste is attached to the inner wall of the digester. The temperature of the wall rises relatively easily than the place where a lot of food waste accumulates, whereby a small amount of food waste is pressed or burned intact on the inner wall surface of the digestion tank, thereby degrading commodity as a fertilizer or feed.

In addition, the food waste treatment apparatus discharges the high temperature steam generated during the food waste heating process to the outside as it is, resulting in severe odor.

The present invention is to improve the problems of the prior art as described above, it is possible to process a large amount of food waste at once, the food waste treatment apparatus is improved food properties as livestock feed or fertilizer do not stick to the inner wall of the food waste The purpose is to provide.

In another aspect, the present invention is to provide a food waste decomposition processing apparatus that is not directly discharged to the outside of the odor generated during the processing of food waste, and also to easily discharge the reprocessed food waste. have.

An object of the present invention as described above is provided with an inlet through which food waste is input, and a main body having a pair of stirring tanks installed therein; A rotating shaft installed in the longitudinal direction of the pair of agitating vessels, installed in the longitudinal direction of the pair of agitating vessels, and having a plurality of impellers attached to pads at each end thereof along an outer circumferential surface thereof; Heating tubes respectively installed on the bottom surfaces of the pair of stirring tanks, through which a heat medium made of oil flows; This is achieved by the configuration of a boiler which heats the heat medium and supplies it to the heating tube.

Still another object of the present invention is to have a constant inclination angle with respect to the wall surface of the stirring tank on the surface of the pads installed on the impeller in contact with the food waste, and to install a steam discharge pipe and a steam reflux pipe at the top of the stirring tank, This is accomplished by causing a cooling tube through which cooling water flows to communicate with a condenser.

The present invention is provided with a pair of agitator tank inside the main body to process a large amount of food waste at once to improve the processing time and processing efficiency, the food waste treated by the inclined pad attached to the impeller is discharge direction Automatically transported food waste can be easily discharged to the outside of the device.

In addition, the present invention is installed so that the heating tube has a different width from side to side based on the vertical center axis of the agitator tank to prevent food waste from being pressed or solidified on the inner wall of the agitator tank, so that it is commercially available as livestock feed or fertilizer. Is improved.

In addition, the present invention condenses and removes water vapor generated from food waste, thereby facilitating water removal, thereby improving treatment efficiency, and minimizing generation of odor generated during processing of food waste.

Hereinafter will be described in more detail with reference to the accompanying drawings showing a preferred embodiment of the present invention.

The present invention is a device for collecting food waste discarded at home or restaurants and processing it to be reused as feed or fertilizer of livestock.

As described above, the food waste put into the agitator tank and reprocessed is decomposed by the yeast put together with these food waste, and when the food waste is decomposed by the yeast, it becomes a thick gel state. In order to be able to recycle food waste, moisture must be removed from the decomposed food waste. Accordingly, the food waste treating apparatus of the present invention has a main body into which food waste is largely introduced and stirred as shown in FIG. 3, an impeller for stirring food waste so that the food waste is quickly and uniformly decomposed, and a high temperature heat medium therein. It is a structure including a heating medium tube for heating and evaporating and removing moisture in the food waste in the gel state decomposed by the yeast, and a boiler for heating the heating medium circulating inside the heat medium tube.

3 and 4, the main body 10 is provided with an opening 11 having a light beam narrowing shape on an upper surface thereof to accommodate food waste therein, and a main body 10 on a lower side of one side thereof. An outlet 13 is finally provided to discharge the processed food waste therein. The main body 10 is made of metal resistant to corrosion such as stainless steel or aluminum so that corrosion can be prevented by moisture or liquid contained in food waste.

In the main body 10, as shown in Fig. 6, a pair of stirring vessels 12 having a semicircular shape in cross section are arranged in parallel along the length thereof, and the side surfaces of these stirring vessels are connected to each other. At the center of each stirring vessel 12, a rotating shaft 20 provided with an impeller 21 radially on its outer circumferential surface is installed along the length of the stirring vessel, and these impellers 21 are each stirred tank ( 12) Rotates along the inner surface. The rotating shaft and the impeller will be described later.

The present invention can increase the capacity of food waste that can be treated at one time by installing and operating a pair of stirring tanks 12 inside the main body as described above, and is suitable for large-capacity food waste disposal.

In addition, the inlet 11 and the outlet 13 are provided with a lid and an entrance door, respectively, which are preferably sealed by an airtight member such as an O-ring and closed by a locking device. During the treatment, the high-pressure steam generated by the evaporation of moisture from the food waste by the heating device can be prevented from leaking, and at the same time, the odor can be prevented from leaking.

And the upper portion of the main body 10 may be carried out by installing an enzyme inlet 14, which is added to the enzyme to promote the fermentation of food separately from the inlet (11).

In addition, the body 10 is further provided with a temperature sensor 15 for sensing the temperature of each stirring vessel 12 to properly control the heating temperature of the boiler to be described later in accordance with the temperature detected by these sensors By doing so, the food waste heated in the stirring tank 12 is not burned or solidified by too high a temperature.

A plurality of impellers 21 are installed on the outer circumferential surface of the rotating shaft 20 installed along the longitudinal direction of the stirring tank 12 at the centers of the pair of stirring tanks 12 installed in the main body 10, respectively. Pulleys or chain sprockets are respectively provided at the ends of the rotating shaft 20 protruding to the V-belt V or the chain connected to the motor M to the pulleys or chain sprockets, so that the power of the motor M is rotated. 20) is delivered.

The impeller 21 formed along the outer circumferential surface of the rotating shaft 20 is a support 21 'having a proper length and a pad 22 attached to the end of the support 21' as shown in FIG. The pad 22 is made of a soft material such as rubber, so that the pad 22 is in close contact with the inner wall surface of the stirring tank 12 and rotated by the pad 22. The food waste attached to the inner wall surface of the trash does not remain on the inner wall surface to be cleanly separated from the inner wall surface, and also to prevent damage even if the inner wall surface of the stirring vessel in contact with the pad (22).

In this case, the pair of rotating shafts 20 rotated by the respective driving motors may be rotated in the same direction or rotated in opposite directions to each other.

The case where the pair of rotary shafts 20 are rotated in the same direction will be described so that the food waste in one stirring tank 12 is transferred to the other stirring tank 12 by the operation of the impeller 21 of one stirring tank. Then, by the operation of the impeller 21 in the other stirring tank 12 is continuously transferred to one stirring tank 12, this process is repeated.

At this time, if a proper inclination angle (A) is given to the surface contacting the food waste of both sides of the pad 22, the food waste in one stirring tank 12 in accordance with the operation of the impeller 21 is inclined direction of the pad 22 While advancing along, it is conveyed to the other stirring tank 12, and by the operation of the other impeller 21, the food waste in one stirring tank 12 advances along the inclined direction of the pad 22, and the other stirring is carried out. It is transferred to the tank 12, and eventually is collected at one end of either one of the stirring tank 12, it is possible to recover the food waste easily processed by forming an outlet 13 there. At this time, if the discharge port 13 is formed at the end of the stirring tank 12 on the side facing the discharge port 13 and the pair of rotating shaft motors can be reversely rotated, the processed food waste is more easily stirred. Can be discharged from

And the lower outer side of the stirring tank 12 of the main body 10 is provided with a heating tube 30 through which a high temperature heat medium flows therein, whereby water contained in the food waste in the stirring tank 12 is heated and dried. To this end, a boiler 40 for heating the heating medium is provided, and the liquid heating medium heated through the boiler 40 flows along the flow path of the heating tube 30 to heat the lower portion of the stirring tank 12.

In this case, oil (열매) is used as a heat medium flowing in the heating tube 30 and the boiler 40. When the stirring tank 12 is directly heated by an electric heater or the like, the food in the stirring tank 12 adjacent thereto is heated. Since there is a problem that the garbage is solidified or burned, in the present invention, temperature control is relatively easy as compared with an electric heater, and oil that can be heated to a high temperature is used as a heat medium.

When operating the food waste treatment apparatus of the present invention having the structure as described above, if the rotation direction of the rotating shaft is opposite to each other, there is no problem when the food waste is in a gel state, but the food waste is impeller as the water inside the food waste gradually evaporates. (21) is transported in the direction of rotation is gathered to the center portion where both agitating tank 12 is connected, at this time, a relatively small amount of food waste remains on the opposite wall surface of the agitating tank 12, a relatively small amount When the food wastes and the highly accumulated portions of the food waste are heated to the same temperature, the food wastes of the small amount of food wastes are easily solidified or pressed to the wall of the stirring tank.

Accordingly, in order to solve this problem, the present invention does not install the heating tube 30 in a portion where the amount of food waste remains in consideration of the rotation direction of the rotating shaft 20, as shown in FIG. The width (W ', W ") in which the heating tube is installed is different from side to side based on the vertical center axis of the bath, so that the food waste is not heated by the heat medium and thus is prevented from being pressed or solidified.

When the food waste in the stirring tank is heated, the water contained in the food waste is evaporated and converted into water vapor. When the water vapor in the stirring tank 12 remains above the saturated vapor pressure, the evaporation of water from the food waste is delayed. In this case, the food waste treatment efficiency is lowered, so in order to increase the food waste disposal efficiency, such steam must be discharged quickly to the outside.

Accordingly, the present invention provides a method for preventing the occurrence of odor while at the same time increasing the processing efficiency of food waste. That is, as shown in FIG. 7, a steam pipe 50 is installed on the upper side of the stirring tank 12, and the steam pipe 50 includes a steam discharge pipe 51 and a steam reflux pipe 52. 50 is a meandering flow path is formed to pass through the condenser 60, the cooling tube 61 is installed in which the cooling water flows therein so that steam introduced into the cooling chamber through the steam discharge pipe 51 into the cooling tube 61 The water vapor is cooled and condensed to make condensed water, and then returned to the inside of the stirring tank 12 through the steam reflux tube 52 again.

At this time, the lower part of the cooling chamber is provided with a condensate outlet 65 for discharging the condensate introduced therein, the condensate outlet 65 is automatically opened and closed according to the water level of the condensate water discharged to discharge only the condensed water to the outside It is preferable that a trap 65 'is provided.

At this time, the drain trap 65 'is a very general configuration that is widely used to automatically control the opening and closing according to the water level, which can be variously changed to those skilled in the art, so a detailed description thereof will be omitted.

According to the present invention, the high temperature and high pressure water vapor flows through the closed loop while cooling and condensing to discharge into water, thereby increasing food waste disposal efficiency and simultaneously discharging only the condensed water to the outside, thereby minimizing the occurrence of odor. It can reduce the environmental impact on the environment.

The present invention configured as described above can treat a large amount of food waste by a pair of agitating tanks and minimize the occurrence of odors, and also food wastes are not pressed or solidified inside the agitating tanks, so that the animal feed or fertilizer It is a useful invention which improves the merchandise as a.

1 is a cross-sectional view showing an example of a conventional food waste treatment apparatus,

Figure 2 is a cross-sectional view showing an example of a feed and fertilizer recycling apparatus using a conventional food residue,

Figure 3 is a side cross-sectional view showing an example of the food waste decomposition apparatus according to the present invention,

4 is a perspective view showing an example of a main body according to the present invention;

5 is a perspective view showing an example of the impeller according to the present invention,

6 is a cross-sectional view taken along the line A-A of FIG.

7 is a cross-sectional view showing an example of a condenser according to the present invention;

8 (a, b) is a state diagram used in accordance with the rotation of the impeller of the food waste decomposition apparatus according to the present invention.

DESCRIPTION OF THE REFERENCE NUMERALS

10: body 11: hopper

12: stirring tank 13: outlet

14: enzyme inlet 15: temperature sensor

20: stirring shaft 21: impeller

21 ': support 22: pad

30: heating tube 40: boiler

50: steam pipe 51: steam discharge pipe

52: steam reflux tube 60: condenser

61: cooling tube 65: condensate outlet

65 ': Drain trap A: Tilt angle

M: Drive motor V: Belt

W ', W ": Width

Claims (7)

In the food waste processing apparatus to decompose and recycle food waste using yeast, A main body 10 having an inlet 11 through which food waste is input, and a pair of stirring tanks 12 installed therein; A rotating shaft 20 installed in the longitudinal direction of the pair of agitating tanks 12 and a plurality of impellers 21 having pads 22 attached to respective ends thereof installed along an outer circumferential surface thereof; Heating tubes 30 installed on the bottom surfaces of the pair of stirring vessels 12 and flowing a heat medium made of oil therein; Boiler 40 for heating the heating medium to supply to the heating tube 30, On both sides of the pad 22, the surface in contact with the food waste has a constant inclination angle (A) with respect to the wall surface of the stirring tank 12, Width (W ', W ") of the heating tube 30 is installed on the outside of the stirring tank 12 is formed on the left and right sides based on the vertical central axis of the stirring tank 12, A steam discharge pipe 51 and a steam reflux pipe 52 are installed at an upper portion of the main body 10, and the steam discharge pipe 51 and the steam reflux pipe 52 are cooling pipes 61 through which cooling water flows. The condenser 60 communicates with the installed condenser 60, and the condensate outlet 65 discharges condensate water introduced therein into the lower portion of the condenser 60, and discharges only the condensate condensate that is automatically opened and closed according to the condensate level. Food waste disposal apparatus characterized in that the drain trap (65 ') is installed so that only the water condensed while the steam of high temperature and high pressure flows along the closed loop is discharged to the outside. delete delete delete The method according to claim 1, Food waste treatment apparatus, characterized in that the heat medium circulating the inside of the heating tube 30 is oil (油). The method according to claim 1, The pair of rotating shafts 20 is disposed in the opposite direction to each other food waste treatment apparatus. The method according to claim 1, The pair of rotating shafts 20 is a food waste processing apparatus, characterized in that rotated in the same direction.

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