JP2013086028A - Food waste treatment apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a food waste treatment apparatus capable of treating food waste more efficiently.SOLUTION: The food waste treatment apparatus treats the food waste by drying, and includes a treatment tank 2 rotating around an axis, into which the food waste is thrown, a vacuum pump for reducing the pressure in the treatment tank 2, a coil 3 for heating the food waste in the treatment tank 2, an exhaust port 23 formed in the treatment tank 2 concentrically with the axis of rotation so as to discharge vapor that occurs inside the treatment tank 2 to the outside, and a condensation part 4 condensing the vapor discharged from the exhaust port 23 by mixing the vapor into cooling water, and draining it with the cooling water.

Description

  The present invention relates to a food waste treatment apparatus for drying food waste.

  Since there is a large amount of food waste discharged from the food manufacturing industry, the restaurant industry, and homes, various processing apparatuses for efficiently processing the waste have been proposed. For example, in the processing apparatus disclosed in Patent Document 1, a container 10 for storing an object to be processed 9 is rotatably installed in a vacuum furnace 7, and a coil 8 is provided outside the vacuum furnace 7. ing. A vacuum pump 12 is connected to the vacuum furnace 7 via an impurity recovery device 13. In this apparatus, the inside of the vacuum furnace 7 is evacuated by the vacuum pump 12, and the workpiece 9 is induction-heated by flowing a high-frequency current through the coil 8 while rotating the container 10. The impurities thus evaporated are sent to the impurity recovery device 13 by the vacuum pump 12, cooled in the inner surface of the solidification chamber 15 cooled by the water cooling jacket 16 in the impurity recovery device 13, and solidified and adhered to the inner surface. The impurities solidified and adhered to the inner surface of the coagulation chamber 15 in this way are scraped off by a rotary blade or the like and then discharged to the outside.

JP-A-5-306417

  In the above-described apparatus, it is necessary to once stop the heating operation in order to remove the evaporated impurities from the coagulation chamber, so that continuous processing cannot be performed and the processing efficiency cannot be said to be sufficient. Then, this invention makes it a subject to provide the food waste processing apparatus which can process food waste more efficiently.

  The food waste processing apparatus according to the present invention is an apparatus for drying and processing food waste, wherein the food waste is charged and the processing tank rotates around an axis, and the pressure reducing means for reducing the pressure in the processing tank Heating means for heating food waste in the treatment tank, an exhaust port formed in the treatment tank concentrically with the rotation shaft so as to exhaust the steam generated inside the treatment tank to the outside, and A condensing unit that condenses the steam exhausted from the exhaust port with cooling water and drains the steam together with the cooling water.

  According to this food waste treatment apparatus, the steam exhausted from the exhaust port is condensed by the cooling water of the condensing unit and then discharged, so that the steam is continuously discharged without stopping the heat treatment of the food waste. Since it can process, an efficient process is attained. Further, since the exhaust port for exhausting the steam to the outside is concentric with the rotation axis of the processing tank, the position where the steam is exhausted by the exhaust port does not change even if the processing tank is rotated. For this reason, the steam can be exhausted by the condensing unit while the food waste is heated by rotating the treatment tank, and the food waste can be continuously processed.

  The heating means is preferably a coil wound around the outer peripheral surface of the treatment tank and through which an alternating current flows.

  In addition, the condensing unit can cover the tip of the discharge port and have a structure in which cooling water is supplied to the inside, and has a drainage unit that drains the cooling water supplied to the inside to the outside. ing.

  Moreover, it is preferable that the said pressure reduction means is a vacuum pump connected to the said processing tank so that the gas in the said processing tank may be discharged | emitted from the part which cross | intersects the rotating shaft of the said processing tank.

  ADVANTAGE OF THE INVENTION According to this invention, the food waste processing apparatus which can process a food waste efficiently can be provided.

FIG. 1 is a schematic view showing an embodiment of a food waste treatment apparatus according to the present invention.

  Hereinafter, an embodiment of a food waste disposal apparatus according to the present invention will be described with reference to the drawings. In addition, the arrow in a figure has shown the direction through which cooling water flows.

  As shown in FIG. 1, the food waste treatment apparatus 1 according to the present embodiment includes a treatment tank 2 that contains food waste inside, and a vacuum pump (not shown) for depressurizing the inside of the treatment tank 2. The coil 3 is wound around the outer peripheral surface of the processing tank 2 and the condensing unit 4 for condensing the steam exhausted from the processing tank 2.

  The processing tank 2 has a cylindrical shape and the rotation axis extends in the horizontal direction (left-right direction in FIG. 1). The input port 21 for inputting food waste into the processing tank 2 and the processed food waste A discharge port 22 for discharging an object from the processing tank 2 is formed on the side surface. The input port 21 and the discharge port 22 are openable and closable mechanisms. Note that the input port 21 and the discharge port 22 may be combined into one input / output port. The treatment tank 2 is supported so as to be rotatable around the rotation axis, and is rotated around the rotation axis by the motor M. Although the capacity | capacitance of the processing tank 2 is not specifically limited, It can be set as about 600-1000L.

  A coil 3 is wound around the outer periphery of the treatment tank 2, and the coil 3 is connected to an AC power source 31 so that an AC current flows. The material of the treatment tank 2 is preferably a metal so that the food waste can be induction-heated by passing an alternating current through the coil 3, and is preferably stainless steel, copper or the like. Moreover, the vacuum pump for decompressing the inside of the processing tank 2 is connected to the processing tank 2 so as to exhaust the gas in the processing tank 2 from a point intersecting the rotation axis on the left end surface of the processing tank 2. Is preferred.

  An exhaust port 23 for exhausting steam generated in the processing tank 2 to the outside is formed on the right end surface of the processing tank 2. The exhaust port 23 extends concentrically with the rotation axis of the processing tank 2. A filter 231 for removing impurities is provided in the exhaust port 23, and an exhaust pump 232 for sucking vapor generated in the treatment tank 2 and exhausting it from the exhaust port 23 is provided. .

  A cylindrical condensing unit 4 is installed so as to cover the open end of the exhaust port 23. A cooling tower 42 is connected to the condensing unit 4 through a pipe so that cooling water is supplied, and a drain pipe 41 is also connected to drain the cooling water. The condensing unit 4 prevents the steam exhausted from the exhaust port 23 from leaking to the outside by sealing the condensing unit 4 by supplying cooling water from the cooling tower 42. Further, since the drain pipe 41 is filled with the drained cooling water, the steam exhausted from the exhaust port 23 is prevented from being exhausted outside without being condensed. The cooling water drained from the drain pipe 41 may be discharged to the outside as it is, or may be drained after being temporarily stored in a drain tank or the like.

  A method for processing food waste by the food waste processing apparatus 1 configured as described above will be described.

  First, food waste is introduced into the treatment tank 2 from the inlet 21 and the inlet 21 is closed. And the inside of the processing tank 2 is pressure-reduced with a vacuum pump. In addition, it is preferable that the atmospheric | air pressure in the processing tank 2 at this time shall be about 40-90 kPa.

  And the food waste in the processing tank 2 is heated by induction heating by sending an alternating current to the coil 3 by the alternating current power supply 31. At this time, the temperature of the food waste can be increased by rotating the treatment tank 2 by the motor M. In addition, it is preferable that the temperature in the processing tank 2 at this time shall be about 70-95 degreeC. The heating time is preferably about 6 to 10 hours.

  As described above, the steam generated by heating the food waste in the treatment tank 2 is exhausted from the exhaust port 23 by operating the exhaust pump 232. At this time, the vapor passes through the filter 231 and is exhausted into the condensing unit 4 after impurities are removed. The steam sent from the exhaust port 23 to the condensing unit 4 is condensed by being mixed with the cooling water sent into the condensing unit 4 and cooled. In addition, it is preferable that the temperature of the cooling water sent in this condensation part 4 shall be about 15-25 degreeC. The cooling water containing the vapor thus condensed is drained from the drain pipe 41.

  As described above, when the food waste is dried by induction heating, the rotation of the processing tank 2 and the induction heating by the coil 3 are stopped, and the dried food waste is taken out from the discharge port 22, for example, livestock. Can be recycled as feed.

  As mentioned above, according to the food waste processing apparatus 1 which concerns on this embodiment, the vapor | steam generated by heating food waste is continuously mixed so that it may mix with cooling water with the condensation part 4, and may be condensed and drained. It becomes possible to treat food waste efficiently. Further, since the exhaust port 23 through which the steam is exhausted is disposed concentrically with the rotation axis of the processing tank 2, the position where the steam is exhausted does not change even when the processing tank 2 rotates. The steam can be condensed while rotating.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to these, A various change is possible unless it deviates from the meaning of this invention, for example, it heats in the processing tank 2. A stirring blade may be installed in the treatment tank 2 so that the food waste to be heated is more uniformly heated.

DESCRIPTION OF SYMBOLS 1 Food waste processing apparatus 2 Processing tank 23 Exhaust port 3 Coil 4 Condensing part

Claims (4)

An apparatus for drying and processing food waste,
A processing tank that is loaded with food waste and rotates about its axis;
Decompression means for decompressing the inside of the treatment tank;
Heating means for heating the food waste in the treatment tank;
An exhaust port formed in the treatment tank concentrically with the rotating shaft so as to exhaust the steam generated inside the treatment tank to the outside;
A condensing part for condensing the steam by mixing the steam exhausted from the exhaust port with cooling water and draining it together with the cooling water;
A food waste treatment apparatus comprising:   The food waste treatment apparatus according to claim 1, wherein the heating means is a coil that is wound around an outer peripheral surface of the treatment tank and through which an alternating current flows. The condensing part is
While covering the tip of the discharge port, the cooling water is supplied inside,
The food waste disposal apparatus according to claim 1 or 2, further comprising a drainage unit that drains the cooling water to the outside.   The said pressure reduction means is a vacuum pump connected to the said processing tank so that the gas in the said processing tank may be discharged | emitted from the part which cross | intersects the rotating shaft of the said processing tank. Food waste treatment equipment.

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