JPH04251002A - Method for garbage disposal and its device - Google Patents

Abstract

PURPOSE:To improve workability and labor saving for garbage disposal by drawing garbage in a garbage hopper and pour water into a vacuum receiver tank, and closing a carrying pipeline to communicate the delivery port of a vacuum pump with the lower part of the receiver tank for discharging a solid-liquid mixture. CONSTITUTION:A vacuum pump is actuated in the open state of the shut-off valve 14 of an intake pipe 12, and the shut-off valve 14 is then closed to open a carrying pipe line 3 and the shut-off valves 5, 7, 15 of a ventilating pipe 13 for ventilating an exhaust leading pipe 8 and a receiver tank 4. A shut-off valve 6 is opened, and the shut-off valve 5 is closed, and garbage is thrown into a garbage throwing hopper 1, and showering is started at the same time through pouring nozzles 2. When the garbage and the poured water are fed into the receiver tank 4 and accumulated to a fixed level, the shut-off valves 6, 7 are closed, and a shut-off valve 10 is opened, and a solid part and a liquid part therefore cause mixed-convection and turn into an easily discharging state. When the shut-off valve 15 of the ventilating pipe 13 is closed, and the shut-off valve 14 of the intake pipe 12 is opened, suction force is caused by jet action due to air discharging through the extended tip 19b of an exhaust pipe 19 in the exhaust leading pipe 8 to transfer a solid-liquid mixture in the receiver tank 4 to a solid-liquid separating device 9.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention is applicable to hotels, restaurants,
The present invention relates to a method and apparatus for processing kitchen waste from kitchens in hospitals, school lunch centers, etc.

0002

[Prior Art] Conventionally, kitchen waste from the kitchens of hotels, etc.
They are loaded into plastic buckets, drums, etc., and transported manually using elevators and stairs, which is both inefficient and unhygienic.

[0003] In addition, in buildings with kitchens spread over multiple locations, a method of transporting kitchen waste as a pulverized slurry using a centrifugal pump or the like has been adopted, but there are problems with the slurry's wastewater concentration, especially the high BOD value. is left behind.

0004

[Problems to be Solved by the Invention] The purpose of the present invention is to eliminate the above-mentioned conventional drawbacks, save labor and improve workability in kitchen waste treatment, provide a sanitary and comfortable working environment, prevent deterioration of effluent water quality, and provide water treatment. The goal is to reduce the load on equipment.

[0005]

[Means for Solving the Problem] In the kitchen waste processing method according to the present invention, kitchen waste is charged and water is injected into a kitchen waste input hopper connected to a receiver tank via a solid-liquid conveying pipe, The suction port of the vacuum pump is connected to the upper part, and the above-mentioned kitchen waste and injection water are sucked into the receiver tank, which has a negative pressure due to its suction action, and when the suction amount reaches a predetermined value, it is transferred from the kitchen waste input hopper to the receiver tank. At the same time, we connected the discharge port of the vacuum pump to the lower part of the receiver tank, and its exhaust action caused a mixing convection between the solids that sank below and the liquid that accumulated above. Afterwards, the electrical connection between the suction port of the vacuum pump and the upper part of the receiver tank is closed, and a discharge pipe line from the lower part of the receiver tank to the solid-liquid separator is connected, and the vacuum pump is connected to the drain pipe line. The discharge port is made conductive, and the solid-liquid mixture in the receiver tank is transferred to the solid-liquid separator by the jet action of the exhaust, and the liquid extracted by the solid-liquid separator and the remaining solid are separated respectively. Discharge separately.

In addition, in the kitchen waste processing apparatus according to the present invention, the terminal end of the conveying pipe is led from the lower part of the kitchen waste input hopper having the water injection nozzle on the inner periphery via the opening/closing bubble. The opening is made at the upper part of the receiver tank, and the starting end of the discharge pipe is opened at the lower part of the receiver tank, and an on-off valve is attached to each of these transport pipes and the discharge pipe. An intake pipe that opens to the atmosphere and a ventilation pipe that opens into the upper part of the receiver tank are branched out from the intake port of the pump, and these intake pipes and ventilation pipes can be opened and closed, respectively. A valve is attached, an exhaust pipe is led from the exhaust port of the vacuum pump, and the leading end is opened into the exhaust pipe, and
The terminal end of the discharge conduit that joins the exhaust pipe is opened into the solid-liquid separator.

[0007]

[Embodiment] The embodiment will be explained below with reference to the drawings.

1 is a water injection nozzle 2 along the inner circumference of the upper edge.
Kitchen waste input hopper 3 is equipped with kitchen waste input hopper 1.
This is a conveyance conduit that extends from the lower part of the receiver tank 4, and its leading end 3b opens into the upper part of the receiver tank 4. 5 is an on-off valve attached to the starting end opening 3a of the conveyance pipe 3; 6 is an on-off valve attached to the lower part of the garbage input hopper 1; 7 is an on-off valve attached near the end 3b of the conveyance pipe 3. It is an open/close valve. Reference numeral 8 denotes a discharge conduit whose starting end 8a is opened at the lower part of the receiver tank 4,
The end portion 8b of the extension is opened into the solid-liquid separator 9. Reference numeral 10 denotes an on-off valve attached to the vicinity of the starting end 8a of the discharge conduit 8, and by opening this valve, the discharge conduit from the lower part of the receiver tank 4 to the solid-liquid separator 9 is conducted. 11 is a vacuum pump externally installed in the receiver tank 4, 11a is its intake port, and 11b is its exhaust port. From the intake port 11a of the vacuum pump 11, an intake pipe 12 that opens to the atmosphere and a vent pipe 13 that has an extending end 13b that opens upward in the receiver tank 4 are led out in a branched manner. . 14 is an on-off valve attached to the intake pipe 12; 15 is an on-off valve attached to the ventilation pipe 13;
6 is a filter tank interposed between the intake port 11a and the on-off valve 15. Exhaust port 11 of vacuum pump 11
From b, two exhaust pipes 1 are connected via a gas-liquid separation tank 17.
8 and 19 are led out, and an on-off valve 20 is attached to one of the exhaust pipes 18 to open the extending end 18b toward the upper part of the receiver tank 4. It may be led out from the middle of the other exhaust pipe 19. Furthermore, since the leading end 19b of the other exhaust pipe 19 is inserted into the exhaust pipe 8, its opening diameter is naturally the same as that of the exhaust pipe 8.
The diameter is smaller than the diameter of the outlet pipe 8, and the air passing through this produces a jet action in the discharge conduit 8. However, if the extending end 19b is formed into a nozzle shape and opens into the discharge conduit 8, this effect can be further enhanced. can be increased. In this way, the terminal end 8b of the discharge conduit 8 that merges with the exhaust pipe 19 serves as a stock solution supply port into the solid-liquid separator 9. 21 is an outlet for the liquid extracted into the solid-liquid separator 9, 22 is an outlet for the remaining solid from which the liquid has been extracted, and 23 is for temporarily storing the solid discharged from the outlet 22. This is a storage tank. In addition,
24 is an on-off valve attached to the gas-liquid separation tank 17.

When carrying out the present invention, first, as a preparatory step, an on-off valve 6 immediately below the garbage input hopper 1, an on-off valve 10 immediately below the receiver tank 4, an on-off valve 15 on the ventilation pipe 13, and an on-off valve 20 on the exhaust pipe 18 are prepared. is closed, and the vacuum pump 1 is opened with the on-off valve 14 of the intake pipe 12 open.
1, the air is sucked in from the intake pipe 12 and vented through the gas-liquid separation tank 17 to the exhaust pipe 19 and the discharge conduit 8. Then, the on-off valve 14 of the intake pipe 12 is closed, and the starting end of the conveyance pipe 3 is The on-off valve 5 attached to the opening 3a, the on-off valve 7 of the conveyance pipe 3, and the on-off valve 15 of the ventilation pipe 13 are opened, and the air sucked from the starting end opening 3a is sent to the receiver tank via the conveyance pipe 3. 4. Let it be sucked into the room.

Next, as a suction process for kitchen waste, the on-off valve 6 is opened, and with the on-off valve 5 closed, the kitchen waste is charged into the kitchen waste input hopper 1, and at the same time, the water injection nozzle 2...
2 starts showling. Kitchen waste input hopper 1
The kitchen waste thrown into the tank is sent into the receiver tank 4 through the conveying pipe 3 together with the injection water. When the kitchen waste is stored to a predetermined level in the receiver tank 4 together with the injected water, as a pre-discharge process, the on-off valves 6 and 7 are closed and the on-off valve 10 is opened while the vacuum pump 11 continues to be driven, thereby draining the receiver tank. Since the inside of the container 4 is under negative pressure, a mixing convection occurs between the solids that have sunk below and the liquid that has accumulated above, creating a state in which the solid-liquid mixture can be easily discharged.

To move from this state to the next discharge process, the opening/closing valve 6 of the kitchen waste input hopper 1 and the conveying pipe 3 are
The on-off valve 7, the on-off valve 15 of the ventilation pipe 13, and the on-off valve 24 of the gas-liquid separation tank 17 are closed, the on-off valve 10 directly below the receiver tank 4, the on-off valve 14 of the intake pipe 12, and the on-off valve 20 of the exhaust pipe 18 are closed. In the open state, the leading end 19b of the exhaust pipe 19 is in the exhaust pipe 8.
At the same time, the discharge pressure of the vacuum pump 11 acts on the receiver tank 4 through the exhaust pipe 18, and the jet action causes a suction force from the exhaust pipe 8 and a pressing action from the exhaust pipe 18. In combination, a strong solid-liquid discharge effect is produced, and the solid-liquid mixture in the receiver tank 4 is transferred through the discharge conduit 8 into the solid-liquid separator 9, and the liquid separated and extracted by the solid-liquid separator 9 is The liquid is discharged from the liquid extraction port 21, subjected to water treatment using a batch type intermittent aeration method, etc., and then discharged. Further, the remaining solids are discharged from the solids discharge port 22 and temporarily stored in the storage tank 23. The stored solids will be loaded onto a transport vehicle and transported out at the appropriate time.

0012

[Effects of the Invention] According to the present invention, since the thrown kitchen waste is sucked together with shower water by wind pressure, it is possible to prevent the kitchen waste from adhering to the inside of the food waste input hopper and the conveying pipe, and the food waste can be transported without losing its shape. Since it is always under negative pressure, it does not create bad odors in the kitchen. Further, since there are no moving parts in the conveyance pipe, smooth conveyance is performed without entanglement or clogging. After the kitchen waste and shower water are sucked in, the solids that have sunk below and the liquid that has accumulated above are mixed and convected in the receiver tank before being discharged. There is no fear that the discharge port will be blocked, and solid-liquid discharge is performed smoothly, resulting in extremely excellent workability. In addition, unlike the commonly used slurry pump pressure feeding method, there is no need to crush the kitchen waste with a crusher, so there is no risk of extremely deteriorating the quality of the discharged water, and BOD
It has the advantage of being able to keep the concentration low and helping to reduce the load on water treatment equipment.

[Brief explanation of the drawing]

The drawing is a diagram showing the configuration of the pipe lines in the device of the present invention.

[Explanation of symbols]

1 Kitchen waste input hopper 2 Water injection nozzle 3 Conveyance pipeline 3b Extension end part 4 Receiver tank 6 Open/close valve 7 Open/close valve 8 Discharge pipe 8a Starting end 8b Extension end 9 Solid-liquid separation device 10 Open/close valve 11 Vacuum pump 11a Intake port 11b Exhaust port 12 Intake pipe 13 Ventilation pipe 13b Extension end 14 Open/close valve 15 Open/close valve 19 Exhaust pipe 19b Extension end

Claims (2)

[Claims] [Claim 1] Injecting kitchen waste and water into a kitchen waste input hopper connected to a receiver tank through a solid-liquid conveying pipe, and connecting the suction port of a vacuum pump to the upper part to draw air from it. The kitchen waste and injection water are sucked into the receiver tank, which has a negative pressure, and when the amount of suction reaches a predetermined value, the conveyance pipe from the kitchen waste input hopper to the receiver tank is closed, and the lower part of the receiver tank is After connecting the discharge port of the vacuum pump to the upper part of the receiver tank and causing a mixing convection between the solids that have sunk below and the liquid that has accumulated above, the suction port of the vacuum pump and the upper part of the receiver tank are connected. The conduction state is closed, and a discharge pipe is connected from the lower part of the receiver tank to the inside of the solid-liquid separator, and the discharge pipe of the vacuum pump is connected to the discharge pipe, and the jet action of the exhaust gas causes the receiver tank A method for treating kitchen waste, comprising transferring the solid-liquid mixture in the solid-liquid separator into a solid-liquid separator, and discharging the liquid extracted by the solid-liquid separator and the remaining solid separately. [Claim 2] A conveying pipe (3) extending from the lower part of the garbage input hopper (1), which has a water injection nozzle (2...2) on its inner circumference, via an on-off valve (6). The conduit terminal end (3b) is opened at the upper part of the receiver tank (4), and the discharge conduit (8) is opened at the lower part of the receiver tank (4).
) and open the starting end (8a) of these conveying pipes (3).
And the discharge pipe (8) is equipped with an on-off valve (7, 10), respectively.
) is attached to the receiver tank (4), and the intake pipe (12) opens to the atmosphere from the intake port (11a) of the vacuum pump (11) installed externally to the receiver tank (4), and the conduit end (13b) connects to the receiver. A ventilation pipe (13) is opened at the upper part of the tank (4).
) are led out in a branched manner, and opening/closing valves (14, 15) are attached to the intake pipe (12) and ventilation pipe (13), respectively, and the exhaust pipe (19) is connected from the exhaust port (11b) of the vacuum pump (11). ), the leading end (19b) thereof is opened into the discharge conduit (8), and the terminal end (8b) of the discharge conduit (8) that joins the exhaust pipe (19) is connected to the solid-liquid. Separation device (
9) A kitchen waste processing device characterized by opening inward.