JP3530791B2 - Garbage decomposition equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing apparatus for decomposing food waste.

[0002]

2. Description of the Related Art Conventionally, a substantially cylindrical suction blow-up tube which is erected from the bottom position of a processing tank filled with water toward the lid side is provided, and a part of the suction blow-up tube has a large diameter to make an ejector portion. And the air jet port provided at the tip of the air supply pipe is installed inside the ejector with the air jet port facing upward, and a diffusion plate for diffusing the sucked bubbles to the upper end of the suction suction cylinder and an exhaust for discharging the exhaust A garbage processing device provided with a control lid is known (see, for example, Japanese Patent No. 2704713). Further, there is also known one in which an evaporative solidification tank and a deodorizer are arranged outside the decomposition tank (for example, Japanese Patent Laid-Open No. 11-16982).
(See Japanese Patent Publication No. 5).

[0003]

The conventional apparatus for decomposing food waste has a function of separating air and water when a foaming phenomenon occurs, but the processing capacity, for example, the supply amount of air is increased. The foaming phenomenon increases remarkably as it grows, and the processing capacity is limited.In addition, if a leak occurs in each part of the equipment, such as the upper lid, odorous gas flows out of the decomposition tank, and the circulation pump Therefore, there is a problem that clogging due to dust is liable to occur especially when transferring a small amount, and a separate power source is required for that purpose, resulting in high running cost. In view of these problems, the present invention suppresses the foaming phenomenon itself, and even if a leak location occurs, odorous gas does not flow out of the decomposition tank, and
The invention was invented for the purpose of providing an apparatus for decomposing food waste that also contributes to a reduction in running cost.

[0004]

[Means for Solving the Problem] A water column pressure gauge is attached to a ceiling part of a main body of a processing tank for treating food waste in treated water stretched in the tank and a steam separation chamber provided above the ceiling part. Separation of air and water from the ceiling of the processing tank body by the suction force of an air blower
Control the chamber and negative pressure. The steam-water mixture generated in the suction blow-up cylinder of the processing tank main body is sucked up with a negative pressure, and the steam-water separation gap and the exhaust passage gap formed in the steam-water separation chamber are passed to perform steam-water separation. Along with foaming. Transfer the raw garbage Slurry raw garbage feed pipe on the suction side of the air lifter is connected to the negative pressure ceiling, and the residue take-up residue suction pipe of the air lifter is placed on the negative side of the tank. The air is blown out by the pressure, and the air is blown up and transferred to each of the residue drying tanks that have become negative pressure due to the suction of the air blow tube.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described with reference to the drawings. In FIGS. 1 to 5, the processing tank body 1 is preferably made of, for example, stainless steel, and the ceiling surface 2 of the processing tank body 1 is directed upward. It is formed in a hollow box shape toward the inside, and the steam separation chamber 3 is provided inside. The diffusion plate disk 4 is formed in a disk shape, and is fixed to the lower end portion of the adjusting screw 6 screwed downward at a substantially central position of the top plate 5 of the steam separation chamber 3. The air / water separating plate 7 is formed in a circular shape in a plan view having a U-shaped vertical cross section, and an adjusting screw 8 attached to the central portion is screwed downward into the top plate 5, so that the air / water separating plate 7 is in the inverted U-shape on the diffusion plate 4. To be installed. The exhaust control unit 9 is formed into a hollow truncated cone shape having a large diameter on the ceiling surface 2 side and a small diameter on the upper end side, and is attached to the ceiling surface 2, and the diffusion plate 4 is provided inside.
Is inserted to form a water vapor passage gap 10 with the exhaust control unit 9. More specifically, a gap is provided between the upper end surface 11 of the exhaust control unit 9 and the lower end surface 12 of the steam / water separating plate 7 to form an exhaust passage gap 13. The downcomer pipe 14 is attached to the ceiling surface 2 with one end opened and the other end is hung and attached vertically.

The suction blow-up cylinder 15 is formed in a substantially cylindrical shape,
The processing tank main body 1 is vertically installed at a substantially central position. More specifically, the lower end of the suction blow-up tube 15 is attached with a water tank bottom surface 16 and a suction gap 17 provided at a height position of about 1/3 below the entire height of the treatment tank main body 1, and the suction blow-up tube 15 is attached. The ejector body portion 18 is formed by increasing the diameter of the body portion at a substantially central position of the entire height. The air fumes 19
The tip end side is inserted into the ejector body portion 18 and bent upward in a substantially L-shape to be attached. The deodorizing activated carbon 20 is filled between the water tank bottom surface 16 and the processing tank body bottom surface 21. For the deodorizer exhaust inlet pipe 22 and the deodorizer exhaust outlet pipe 23, for example, hollow steel pipes are used, and exhaust exhaust holes 24 and exhaust inlet holes that penetrate both ends of the hollow and penetrate the inner hollow portion at the peripheral surface are used. 25 are bored and embedded laterally in the deodorizing activated carbon 20.

The air blower 26 is arranged on the suction side via a vacuum pipe 27 which communicates with the inside of the water / water separation chamber 3 at one end side, and on the discharge side, the exhaust air communicated with the hollow inside of the deodorizer exhaust inlet pipe 22. It communicates with the inlet pipe 28. More specifically, it is desirable to provide a float switch 29 in the middle of the vacuum pipe 27. By providing the float switch 29, it is possible to prevent the air blower 26 from being damaged if water flows into the piping. The transfer air lifter 30 is formed in a hollow, generally frustoconical shape, and has an inlet pipe 32 from the throwing-in crushing tank 31 in communication with the inside on the bottom side surface, and an atmosphere suction pipe 33 for sucking the atmosphere from the opposite side surface.
One tip end of the slurry is bent upward into an L-shape and fixedly inserted, and one end side of the upper end is connected to the ceiling portion T of the ceiling surface 2 of the processing tank main body 1 to communicate with the ceiling portion T inside the slurry-like raw material. The other end of the dust feed pipe 34 is connected to the inside to be piped.

The residue take-out air lifter 35 is formed in substantially the same structure as the transfer air lifter 30, and a bottom surface of the bottom is provided with a residue delivery pipe 36 from the bottom 16 of the water tank so as to communicate with the inside thereof. From the above, one end side of an air suction pipe 37 for sucking air is connected to the inside for piping, and the other end portion of a residue feed pipe 39 having one end side communicating with the inside of a residue drying tank 38 described later is connected to the upper end portion. Plumb in communication with the inside. More specifically, the other end of the air suction pipe 37, which communicates with the inside of the residue extraction air lifter 35 at one end side, is formed in an inverted U shape so as to prevent backflow as shown in the drawing. And the piping of the air suction pipe 37 is upside down U
A drying air supply pipe 41 is branched from the middle of the character pipe to the inner box bottom of the residue drying tank 38, which will be described later, so that the drying air is blown out. Further, an air blower unit 4 in which these parts and the air blower 26 are integrated.
Although 0 is arranged at the outer position of the processing tank main body 1 for easy understanding in the drawing, it is preferable to arrange 0 at the bottom of the processing tank main body 1 because heat loss is further reduced.

The residue drying tank 38 has a bottom surface 42 and a side surface 4.
3, an inner box 45 having exhaust heat recovery grooves 44 formed at regular intervals is provided, and a jacket portion is formed on the outer side of the inner box 45. A basket-shaped take-out net 46 made of steel is provided inside the inner box 45, and the bottom 47 of the take-out net 46 and the inner box 45 are provided.
A heater 48 is provided between them. The other end of the air vent pipe 49, which has one end communicating with the air blast pipe 19, communicates with the inside of the residue drying tank 38 for piping. Further, the exhaust heat ventilation pipe 5 is provided at the bottom of the exhaust heat recovery groove 44 of the residue drying tank 38.
0 is connected to one end side of the exhaust heat ventilation pipe 50 and the other end of the exhaust heat ventilation pipe 50 is connected to the inside of one end of the deodorizer exhaust outlet pipe 23. The water column pressure gauge 51 includes a communication pipe 52 for communicating with the air / water separation chamber 3 that communicates with the inside of the water / water separation chamber 3, and a communication pipe for a treatment tank body that communicates with a ceiling portion T inside a side surface of the treatment tank body 1 at a lower position of the ceiling surface 2. 53 and a steam-water separation chamber pressure gauge 54 for measuring the pressure difference P between the inside of the steam-water separation chamber 3 formed by bending water into a U-shape and the atmospheric pressure, and the inside of the steam-water separation chamber 3. And a differential pressure measuring pressure gauge 55 for measuring a pressure difference P between the inside of the processing tank main body 1 and the inside of the processing tank main body 1.

[0010]

EXAMPLES The values of the actual test of the air blower 26 are shown below. Air flow rate 120 l / min Suction pressure P = -420 mmAq (air / water separation chamber) Pressure difference between the ceiling of the processing tank and the air / water separation chamber p = 40 mmAq Further, exhaust control when the diameter of the diffusion plate disk 4 is 100 m / m If the air / water gap 10 with the portion 9 is 20 m / m, and the exhaust passage gap 13 formed by the upper end surface 11 of the exhaust control unit 9 and the lower end surface 12 of the air / water separating plate 7 is 20 m / m, good results are obtained. can get. Next, regarding the transfer air lifter 30, the total height H is 200 m / m, the bottom surface diameter R is 65 m / m,
Good results were obtained when the introduction diameter of the introduction pipe 32 was 25 m / m, the diameter of the slurry-like garbage feed pipe 34 was 15 m / m, and the diameter of the air suction pipe 33 was 10 m / m.

Next, the case of implementing the present invention will be described. When water is injected to the height of the water surface W in the treatment tank main body 1 and the air blower 26 is operated, the inside of the steam separation chamber 3 is passed through the vacuum pipe 27. Is -420 mmAq, and the pressure difference between the treatment tank ceiling portion T and the inside of the steam / water separation chamber 3 is 40 mmAq, which is a negative pressure. Therefore, the air-fuel mixture K is formed by the suction force of the negative pressure from the air fusible pipe 19. Is sucked up. The rising water-water mixture K collides with the diffusion plate disk 4 and diffuses to the surroundings, and the water flows down into the lower processing tank body 1 along the inclined plate of the truncated cone-shaped exhaust control unit 9. Then, here, it is separated from the air component, passes through the air / water passage gap 10 and the exhaust air passage gap 13 and further contacts the air / water separation plate 7, and after the water is separated and removed, a part of the water separated by the water vapor is precipitated. The air component flows down from the pipe 14, and the air component is discharged from the vacuum pipe 27. More specifically, when the water containing the bubbling phenomenon rises due to the action of the vacuum, the air-water passage gap 10 and the exhaust passage gap 1
It is squeezed in the gap 3 and the pressure is suddenly lowered, so that the bubbles are broken like being torn off here and the foaming phenomenon can be easily suppressed.

[0012] Further, the raw garbage thrown into the input crushing tank 31 and crushed into a slurry is sent to the transfer air lifter 30. In this case, the raw garbage transfer pipe 34 of the transfer air lifter 30 has a slurry-like raw garbage feed pipe 34. The negative pressure (approx. 400 mmA)
q) is acting, and the slurry-like raw dust is sucked up by the vacuum effect, rises in the slurry-like raw dust feed pipe 34, and is supplied into the processing tank main body 1.

The residue of the garbage collected on the bottom 16 of the water tank is
Next, the residue is sent to a residue drying tank 38 via an air lifter 35. More specifically, if the inside of the residue drying tank 38 is covered, the inside of the air vent pipe 49 becomes a negative pressure due to the suction of the air by the vacuum pipe 19 and the inside box 45 also becomes a negative pressure.
The inside of the residue feed pipe 39 that communicates between the inside of 8 and one end becomes a negative pressure, and the residue N of the raw garbage that has flowed into the residue removal air lifter 35 from the water tank bottom surface 16 is sent to the residue drying tank 38 and taken out. It is sent to the net 46. The residue is dried by air blown from the bottom of the inner box 45. Further, in the exhaust heat recovery groove 44 of the residue drying tank 38, the exhaust heat ventilation pipe 5 whose one end communicates with the deodorizer exhaust outlet pipe 23.
Since the other end of 0 is communicated, the deodorizer exhaust inlet pipe 2 is connected to the exhaust inlet pipe 28 on the discharge side of the air blower 26.
From the exhaust outlet 24 of No. 2 into the deodorizing activated carbon 20,
Further, the high-temperature exhaust gas that has entered through the exhaust gas entry hole 25 of the deodorizer exhaust gas exhaust pipe 23 is fed to the exhaust heat recovery groove 44 and heated from the bottom portion, thereby promoting the drying effect of the residue of raw garbage. More specifically, by heating with the heater 48, 70% for additional heating in cold weather and for sterilization during removal of dried residue.
Heat to about 100 ° C.

[0014]

As described above, according to the present invention, by forming a strong negative pressure closed circuit in the processing tank body and the water / water separation chamber, the foaming phenomenon is suppressed, and the air lift transfer utilizing the negative pressure is possible. Therefore, even if a small volume is transferred, clogging due to dust will be eliminated, running costs will be reduced, and even if a leak location should occur in the equipment, each part will have a negative pressure so that odorous gas will not be emitted to the outside. You can

[Brief description of drawings]

FIG. 1 is a front view showing a part of a food waste decomposition processing device in a vertical section.

FIG. 2 is a vertical sectional view of a steam separation chamber portion.

FIG. 3 is a perspective view of a steam separation chamber portion.

FIG. 4 is a vertical cross-sectional view of a transfer air lifter.

FIG. 5 is a perspective view of a residue drying tank.

[Explanation of symbols]

1 Processing tank body 3 steam separation room 4 Diffusion plate disk 7 steam separator 9 Exhaust control unit 10 Air / water passage gap 13 Exhaust passage gap 14 downcomer 15 Suction blow-up tube 16 Water tank bottom 19 Air fumes 20 Activated carbon for deodorization 22 Deodorizer exhaust inlet pipe 23 Deodorizer exhaust outlet pipe 26 Air blower 27 Vacuum piping 28 Exhaust pipe 30 transfer air lifter 31 input crushing tank 34 Slurry garbage feed pipe 35 Residue removal air lifter 36 Residue delivery pipe 37 Atmosphere suction pipe 38 Residue drying tank 39 Residue supply pipe 41 Drying air supply pipe 44 Exhaust heat recovery groove 45 inner box 46 Take-out net 48 heating heater 50 Exhaust heat ventilation pipe 51 Water column pressure gauge 52 Communication pipe for air / water separation chamber 53 Processing tank main body communication pipe 54 Air-Water Separation Chamber Pressure Gauge 55 Differential pressure measurement pressure gauge

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-11-77003 (JP, A) JP-A-2000-126723 (JP, A) JP-A-9-1118 (JP, A) Actual development Sho-54-150176 (JP, U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) B09B 3/00-5/00 C02F 3/00-3/24 C02F 11/02

Claims (4)

(57) [Claims] 1. An air suction force of an air blower by attaching a pressure gauge to a ceiling portion of a treatment tank main body for treating raw garbage in treated water stretched in the tank and a steam separation chamber provided above the ceiling portion. so
The ceiling of the processing tank body and the steam separation chamber are controlled to a negative pressure, and a suction gap is formed between the processing tank body and the bottom surface of the water tank.
A part of the suction blow-up tube that is set upright in the vertical direction with a space
The ejector body is formed with a large diameter, and the ejector body is formed.
The air outlet provided at the tip of the air supply pipe inside
Installed, the air-water mixture generated in the suction blow-up cylinder is sucked up, air-water separation is executed in the air-water separation chamber, bubbles are destroyed, and the ceiling portion and a transfer air lifter for supplying raw garbage are supplied. An apparatus for decomposing food waste, which is connected to the suction side with a pipe and feeds slurry-like food waste at a negative pressure. 2. An exhaust control unit in which the air / water separation chamber is formed in a hollow truncated cone shape on the ceiling surface of a processing tank main body, a disc-shaped diffusion plate provided inside the exhaust control unit, and an upper position of the exhaust control unit. The garbage disintegration processing device according to claim 1, wherein a steam passing gap and an exhaust passing gap are respectively formed with the steam separating plate provided in the. 3. A residue take-out air lifter and a residue drying tank having an exhaust heat recovery groove are provided outside the processing tank main body, and air in a suction blowing cylinder provided in the residue drying tank and the processing tank main body is provided. The air blower pipe is used to connect the fumarole pipe to the residue extraction air lifter and the residue drying tank are residue feed pipes, and the residue extraction air lifter and the bottom of the water tank are residue discharge pipes. 3. The apparatus for decomposing food waste according to claim 1 or 2, characterized in that. 4. A deodorizing activated carbon is filled under the water tank bottom of the treatment tank main body, and a deodorizing device exhaust inlet pipe and a deodorizing device exhaust outlet pipe are buried in the deodorizing activated carbon, and the deodorizing device exhaust inlet pipe is provided with the above The raw garbage decomposing apparatus according to claim 1, 2 or 3, wherein the discharge side of the air blower is connected to a pipe, and the exhaust outlet pipe of the deodorizer is connected to an exhaust heat recovery groove of the residue drying tank. Processing equipment.