KR20060056295A - Food waste recycling apparatus and method - Google Patents

Abstract

The present invention relates to food waste recycling, and more particularly, to a food waste recycling apparatus and method for reducing the salinity of food waste by drying and then crushing to facilitate recycling.

The present invention is to remove the foreign matter in the food waste at the same time spraying fresh water to reduce the salt content, to perform the pulverization process to homogenize the mesh, a multi-stage conveyor is placed in a quadrangular container box, the bottom of the circular steel mesh The rotating drum is equipped with a device, and the crushed food waste is put into a drying apparatus, and receives heat from the outside and presses the hot air into the drying apparatus through a blower to perform a drying treatment. The discharged dry food waste is discharged through the rotating drum and crushed to be recycled and recycled to the milling device. Meanwhile, the steam generated during the drying process is cooled to reduce the cooling water and used for the cooling water and pretreatment. The water is purified and discharged from the purification system, and food waste can be recycled. It provides a food waste drying apparatus and method for drying it.

       Food Waste, Cooling Water, Drying Equipment, Recycling

Description

Food waste recycling apparatus and method {omitted}

1 is a cross-sectional view of a processing apparatus

2 is a transfer diagram of dry food waste

3 is a conveyor detailed view

<Description of Main Parts of Drawing>

A: Cleaning Drum A-1: Transfer Conveyor

A-2: transfer pipe A-3: sump

A-4: Grinder B: Drying Equipment

C: Cooling Tank D: Purification System

E: milling device

1: container box 2: hot air inlet

2-1: Blower 3: Feeding Fan

4: slot 5: support plate

6, 6-1, 6-2, 6-3: Drying conveyor 7: Rotating shaft

8: Rotating Drum Outlet 9: Hopper

10: thermal barrier plate 11: cooling fan

12: rotary drum 13, 13-1: feed pipe

14: cooling water transfer pipe 15: cooling pipe

16: Coolant outlet 17: Operating wing plate

17-1: Fixture 18: Supporting Roller

19: chain 20: transfer path

The present invention relates to food waste recycling, and more particularly, to a food waste recycling apparatus and method for reducing the salinity of food waste by drying and then crushing to facilitate recycling.

In the example of the conventional food waste treatment, the collected food waste is put into a closed container to seal the door, and the heat source depends on electricity, gas, petroleum, and the like for a long time to dry or mature. When the treatment is completed, it is discharged and used as feed or compost, and the treatment method of the method of releasing water vapor generated during the treatment into the atmosphere is mainstream.

However, in order to blow the hot air into the drying apparatus, the heat source is expensive due to the dependence on electricity, gas, petroleum, etc., and continuous processing is difficult, while the dried food waste contains a lot of salt, which makes it difficult to recycle. In addition, since water vapor generated during the drying process is discharged into the atmosphere, water vapor has a problem of contaminating the environment by containing pollutants.

      In order to solve the above problems, the present invention, to remove the foreign matter in the food waste, and to reduce the salt content which is an obstacle to recycling, to remove the salt by spraying fresh water to the food waste, to crush the food waste to a predetermined size Through the pretreatment that performs the treatment, drying is carried out by placing a multi-stage drying conveyor in a quadrangular container box, a heat blocking diaphragm at the bottom of the conveyor, a circular rotating drum and a cooling fan at the bottom, and a waste incinerator. A blower that receives high-temperature waste heat from the back and presses it into hot air and installs a fan to discharge steam generated during the drying process, and puts pretreated food waste into the drying device. Is supplied with hot air and pressurized into the drying unit with hot air to Crude treatment is carried out, and the dried food waste is transferred to a milling apparatus and pulverized according to each recycling purpose. Meanwhile, water vapor generated during the drying treatment is cooled to reduce the cooling water and sprayed in the cooling water and pretreatment. It is an object of the present invention to provide a food waste recycling apparatus and method for transporting used water used as water to a purification treatment apparatus to continuously process food waste for recycling.

BEST MODE Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a side cross-sectional view of the present treatment apparatus, showing the interconnection of each apparatus.

A-1 is a conveying conveyor for transporting food waste to the washing drum, and in the middle of the rotating belt of the conveyor is a mesh of small mesh, which is used to reduce salt by spraying fresh water when the food waste contains high salt. In order to remove foreign substances in the process, at the same time, the water used for spraying to reduce salt is collected and drained to the bottom, A is a washing drum, the circumference is meshed, and a spiral plate is attached to the mesh on the inner surface. Food waste is transported and discharged, and a spray nozzle is installed in this drum to spray fresh water to reduce the salt content of food waste. A-3 is a water collecting tank of used water and crushed water generated during the grinding process. As a, it is connected to the purification treatment device (D) through the transfer pipe (A-2), A-4 is a grinder, the crushed food waste conveyed from the washing drum Grinding and conveying to the inlet of the drying apparatus, which may be replaced by a crushing extruder, the crushing, or crushed extrusion water generated in the crushing process is transferred to the sump tank (A-3) through the required pipe.

B is a drying device, 1 is a container box in which the device is built, and is insulated. 4 is an inlet of crushed food waste, which is laid in the width of a conveyor, and a rotating rod with a wing attached to the bottom is placed. The food waste is put down only as much as it takes on the wing as the rotating rod rotates, and the wing is attached in the required number, and 4-1 is the adjustment plate, which is attached to the upper plate to maintain a constant distance from the first conveyor. It spreads when a large amount of food waste is gathered on one side, and 6 · 6-1 · 6-2 · 6-3 is a drying conveyor, 6 is a first conveyor, and is located at the top of the container box. 4) Food waste from 4) is spread on the conveyor, rotated in the direction of the arrow, 5 is the drip tray (5) and is slightly inclined to the inner wall surface. In addition, an outlet for discharging water that can flow out of the trash to the inclined junction is provided, and 6-1 is a second conveyor, which is installed below the first conveyor, to allow food waste to be transported. Lay out a little more than the conveyor to form a stage, the rotation is rotated in the direction of the arrow to the opposite direction to the first conveyor, 6-2 is the third conveyor, placed on the lower side of the second conveyor, to receive food waste It is laid slightly out of the second conveyor to form a stage, and the rotation is rotated in the direction of the arrow to be the opposite direction to the second conveyor, 6-3 is the fourth conveyor, which is placed below the third conveyor, Lay out a little more than the third conveyor to receive food waste, and forms a stage, the rotation is rotated in the direction of the arrow to the opposite direction to the third conveyor, 7 constitutes a conveyor Is a rotating shaft, one chain is placed on each side of the rotating shaft, and the rotating shaft is connected to the driving device connected to the driving motor from the outside of the rear side and driven, and the rotation speed is adjusted by the operation of the driving device, and 9 is the hopper as the fourth It receives dry food waste from the conveyor and transfers it to the rotating drum, which is connected to the rotating drum through the thermal barrier plate 10, 10 is a thermal barrier plate that blocks the movement of heat from the upper side to the lower side, and 12 is a rotating drum. In order to transfer and discharge the dry food waste conveyed from the hopper 9 to the outlet 8 side, the spiral drum is attached to the inner cylindrical surface, and this rotating drum is connected to the driving device connected to the motor. The speed of rotation is controlled by the driving device, 11 is a cooling fan, 8 is an outlet connected to the rotating drum, 2 is a hot air inlet, and 2 -1 is a blower, which is installed at the hot air inlet, and connected to an external waste incinerator or heat generating device through a required pipe to supply high temperature heat to pressurize the hot air, and 3 is a suction feed fan. Water vapor in the drying apparatus is sucked and transferred to the cooling pipe 15 through the transfer pipe 13 · 13-1, 20 is a transfer path, which connects the discharge port 8 of the rotating drum and the milling device E to each other. The dry food waste is conveyed to a milling apparatus, and E is a milling apparatus, which grinds the conveyed dry food waste to a designated mesh.

C is a cooling tank filled with cold water, and a cooling tube 15 is mounted therein, 16 is an outlet connected to the cooling tube, discharges the cooling water, 14 is a cooling water conveying tube, and D is a purification apparatus. The cooling water and the used water introduced from the pretreatment device (A) are purified and discharged.

FIG. 2 is a view showing the path from which food waste dried in the third conveyor is transferred to the rotating drum 12 through the hopper 9 from the front of the rotating drum.

Figure 3 is a detailed view of the conveyor, 7 is the conveyor rotation shaft, 19 is a rotation chain mounted on both sides of the rotation shaft (7), 17-1 is a fixture, which is installed in the required number of both chains are connected to the operating wing plate, 17 is a working wing plate, which is connected to and mounted on the fixture 17-1 of both chains, and the working wing plate is made of steel plate of about 10 cm in width, and is coated with Teflon to prevent sticking of food waste. When the rotary operation is performed, the operating wing plates are connected to each other in a flat state by lying sideways in the upper part, and when they move to the lower side, each operating wing plate is vertically suspended, and moves upwards. When lying down, the operation is repeated in contact with each other to form a plane. During the operation of the device, the food waste is transferred to this working wing plate and dried. In order to add a dispersive stirring effect of the food waste being dried, it is preferable that the width of the working blade plate is 10 cm or less, and each conveyor supports a chain for the chain. ) Is attached to both sides, the number is adjusted according to the length of the conveyor

The apparatus installed in the container box, such as a conveyor and a rotating drum built in the container box, is made of heat-resistant steel.

The number of conveyors in the above can be increased or decreased.

In the above, the rotating drum may be replaced by a conveyor.

In the above description, the position of the hot air indentation opening may be changed to another surface, and may be distributed in various places.

Although the waste heat of the high temperature which generate | occur | produces in incineration of waste is used for this drying apparatus, the heat produced by the heat generating apparatus by oil, gas, etc. can also be used.

The operation of the embodiment configured as described above will be described.

This embodiment is used to receive the high temperature waste heat generated from the waste incinerator, and to crush the food waste to a size of 2-3mm in the pretreatment, the water content of the pulverized product is 90% or less, and when it is put into the drying apparatus sequentially Each drying conveyor is dried and processed. The dried food waste has a moisture content of 15% or less, and the dried food waste is crushed into a mesh for recycling purposes in the milling apparatus.

When the device is operated, the blower is operated to receive the high temperature heat generated during the waste incineration process, and presses the hot air into the drying device to maintain the temperature inside the drying device to a predetermined temperature.

Remove and remove foreign substances while transporting food waste to the conveying conveyor (A-1), which continues the rotation operation, and transfer to the washing drum (A), the salt is washed out by the spray water, and the salt content is reduced. The reduced food waste is conveyed to the grinder A-4, and is pulverized. The water used for spraying and the pulverized water generated during the pulverization process are transferred to a water collecting tank, and the crushed food waste is transferred to the inlet of the drying apparatus.

The first conveyor rotates in the direction of the arrow, and the crushed food waste is put on the working wing plate 17 which forms a plane from the inlet 4, and the rotary rod and the adjusting plate 4 installed under the inlet 4 are disposed. The amount determined by -1) is put and laid, while the drying treatment is performed by hot air press-fitted by the blower, and by the continuous operation of the conveyor, the working blade plate reaches the downward rotation part of the conveyor and in turn is lowered. As the food waste being dried while being rotated to the lower part is transferred to the second conveyor, the first drying is performed, while the operating wing plate moved to the lower part is vertically suspended as shown in FIG. When rotated up, they lie on the side, and the operation of contacting each other is continuously performed. Cali's waste is on a working blade.

The second conveyor rotates in the opposite direction to the first conveyor, and the operating blade plate 17 performs the same operation as the first conveyor, and the primary blades are transferred from the first conveyor on a plane connected to each other by overlapping the operating blade plates. The dried food waste is laid down again, and drying continues by the pressurized hot air, and the operating blade plate reaches the downward rotation by the rotating operation of the continuously rotating conveyor, so that the food waste is operated as in the first conveyor. The secondary drying process is carried out by dropping to the lower side and being transferred onto the third conveyor.

The third conveyor rotates in the opposite direction to the second conveyor, and by the rotational operation of the conveyor, the operating blade plate reaches the downward rotation part, and the same operation as in the second conveyor is performed, so that the food waste falls to the lower side on the fourth conveyor. By being transported, the drying process is carried out three times.

The fourth conveyor rotates in the opposite direction to the third conveyor, and the operation blade plate 17 operates in the same manner as the second conveyor, so that the operation blade plate reaches and rotates while the food waste plate falls to the lower portion of the hopper (9). 4) drying process is carried out by 4), and the food waste conveyed to the hopper is dried at a predetermined moisture content, and the dry food waste is collected and transported to the rotating drum.

The dry food waste conveyed from the hopper 9 is fed to the rotating drum 12 which continues the rotary operation, and the injected dry food waste is conveyed toward the outlet 8 while being rotated by the spiral iron plate, and is transferred to the conveying path 20. Is transferred to the milling apparatus (E) through, it is cooled in the transfer process by the operation of the cooling fan (11).

The milling device (E), which has been transported dry food waste, is crushed into a predetermined mesh, so that it can be easily recycled, can be packaged, and can be stored for a long time. .

On the other hand, the steam generated during the drying process is forcibly transferred to the cooling tube by the suction transfer fan (3) to be cooled and reduced to the water, this cooling water is purified and treated with the water and the crushed water at the time of spraying (D It is transferred to), purified, and discharged.

Food waste is difficult to recycle due to excessive salt content, and by reducing the salt, it is easy to recycle food or compost.

Food waste, which is pulverized into small meshes in the mill, is the best feed for the earthworm, which contributes greatly to the earthworm culture.

Cooling water vapor generated in the drying process and the water vapor generated in the drying process is purified and discharged so as not to pollute the environment.

This dryer is used for various purposes such as sludge generated from water treatment.

The drying device uses high-temperature waste heat generated when incineration of waste, thereby reducing the cost of the heat source.

Claims (2)

      Remove foreign substances in food waste and reduce salt content by spraying fresh water on food waste, and pretreatment by grinding or extruding to a predetermined size in a grinder (A-4) or a milling extruder, and used for spraying fresh water Drying device (B) consisting of used water and crushed water or crushed extruded water generated in the crushing process, and the crushed food waste is composed of a multi-stage drying conveyor device (6, 6-1, 6-2, 6-3) ) By operating the blower to inject high temperature waste heat from the external waste incinerator or heat supplied from the heat generator into hot air to dry it at a predetermined moisture content, and dry the food waste dried in the mill. E) to be crushed into a predetermined mesh, while water vapor generated in the drying apparatus is cooled in the cooling tank (C) to reduce the cooling water, and this cooling water and minutes It is used and how the food waste while performing the purification treatment to be transported to ground to a purification treatment unit (D) treatment of food waste recycling, characterized in that the recycling is easy to handle with the The drying apparatus (B) according to claim 1, wherein the drying apparatus (B) installs a multistage drying conveyor (6, 6-1, 6-2, 6-3) in a quadrangular container box, and the drying conveyor is provided at both ends of the rotary shaft (7). Rotating chain 19 is mounted, and this chain is attached to the required number of fasteners 17-1, and the working wing plate 17, which is Teflon coated on a steel plate of about 10 cm width, is fastened to the fastener 17 -1) is connected and mounted, the bottom of the conveyor is installed with a heat shield plate 10, a circular rotating drum 12 and a cooling fan 11 is installed on the lower side of the train partition plate, A blower 2-1 for injecting hot air, a suction feed fan 3 for transferring water vapor in the drying apparatus from the upper surface thereof, which is connected to the cooling pipe 15 of the cooling tank through a required pipe; The cooling pipe is a food waste recycling processing device, characterized in that configured to be connected to the purification processing device through the transfer pipe of the required.

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