JP2001025746A - Organic waste treating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an org. waste treating device by which org. waste is surely, efficiently and economically treated by the use of the power for a special time zone such as midnight power. SOLUTION: This org. waste treating device is provided with a storage tank for org. waste, an electric heater 10 set in a heating chamber provided around the outside of the bottom of the tank, a blower 14 for blowing heated air into the tank, an agitation mechanism furnished with an impeller to agitate the org. waste in the tank and an operation controller 20 receiving specified power to control and drive the heater 10, blower 14, an agitation motor 33 and an automatic-door mechanism 40. The operation controller 20 is furnished with a first timer 21 starting to count when it is supplied with power to set the treating time and a second timer 22 starting to count during the time limiting action of the first timer to set the time to discharge the treated org. waste from the tank.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an organic waste for drying or fermenting organic waste such as garbage using electric power supplied in a specific time zone such as midnight electric power (nightly discounted electric power). It relates to a processing device.

[0002]

2. Description of the Related Art When processing a large amount of garbage such as leftovers and garbage left from a catering center, a catering business, a restaurant, and the like, the garbage is collected, put into a storage tank, and the inside of the tank is heated and dried while stirring. Or, an organic waste treatment apparatus for fermenting and treating garbage by fermentation of microorganisms is becoming widespread.

[0003]

As this type of organic waste treatment apparatus, for example, a horizontal storage tank having a semi-cylindrical bottom is used, as described in Japanese Patent Application Laid-Open No. H5-254973. In addition to providing a heater for heating the inside of the storage tank, a stirrer mechanism that horizontally supports a rotation shaft at a substantially axial center position at the bottom of the storage tank and radially attaches a plurality of stirring members to the rotation shaft. A processing device provided with the device is known.

[0004] This type of organic waste treatment apparatus is expected to efficiently treat a large amount of garbage such as leftovers and garbage left from a lunch center or a restaurant in a short time, and ideally, on that day. It is desired that the processing of the garbage discharged in (1) is completed in the night of that day, and that the next day the new garbage can be put into a state where it can be put in. Therefore, it is considered to dispose of the garbage discharged on that day at night, and to consider using an electric heater as the heat source of the heater and economical late-night power, for which a nightly discount rate is set. Was done.

However, in the case of this type of late-night power, the power supply time is generally set, for example, from midnight to 8:00 in the morning,
Power is supplied only during that time. For this reason, when it is attempted to completely automate the processing of organic waste at night, if the processing is not completed accurately within the power supply time, the processing is performed in the morning.
Since the power supply is stopped after the hour, not only the incomplete disposal of garbage, but also the operation of the automatic door mechanism and the stirring / discharging mechanism stops at the incomplete position, so that There was a problem that it could not be input.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and it is possible to reliably and efficiently treat an organic waste economically by using a specific time zone power such as midnight power. An object of the present invention is to provide a waste disposal apparatus.

[0007]

For this purpose, the organic waste treatment apparatus of the present invention puts organic waste into a storage tank,
In an organic waste treatment apparatus that stirs organic waste by driving a stirring mechanism disposed in the storage tank while heating the storage tank and drying or fermenting the organic waste, the organic waste is disposed in a heating chamber surrounding the outside of the bottom of the storage tank. An electric heater provided, a blower for blowing air sucked from the heating chamber into the storage tank, a stirring motor for forward / reverse rotation linked to a rotating shaft of the stirring mechanism, and a bottom provided in the storage tank. An automatic door mechanism that automatically opens and closes the discharged outlet, and is provided around the rotation axis of the stirring mechanism,
With a plurality of stirring blades that transport organic waste in the tank toward the discharge port by rotating in one direction, and receiving power supply of specific power,
An operation control device for controlling and driving an electric heater, a blower, a stirring motor, and an automatic door mechanism, wherein the operation control device includes a first timer that starts counting when power is supplied and sets a processing time, and a first timer. A second timer is provided for setting a discharge time for discharging the organic waste, which has started the counting and processing after the time limit operation, from the storage tank,
The time obtained by adding the set time of the first timer and the second timer is set to be less than the power supply time of the specific power, and at the start of the count of the first timer, the electric heater, the blower, and the stirring mechanism are started, and the time limit of the first timer is set. At the time of operation, the electric heater and the blower are stopped, and at the start of counting by the second timer, the automatic door mechanism is opened, and the agitation mechanism is operated to start discharging organic waste. At times, the stirring mechanism is stopped, and the automatic door mechanism of the discharge port is closed.

[0008]

This organic waste treatment apparatus puts organic waste such as garbage into the storage tank, turns on a power switch, and waits for supply of a specific power (for example, midnight power). When power supply starts during the midnight power period, the first timer starts counting, and the electric heater, blower, and stirring mechanism are activated, and the stirring blades of the stirring mechanism stir the organic waste in the storage tank. The organic waste is dried while blowing hot air into the storage tank while maintaining the inside of the storage tank near a preset temperature.

The rotating shaft of the stirring mechanism repeats forward and reverse rotations at regular intervals by driving a motor, and the stirring action of a plurality of stirring blades accompanying the rotation satisfactorily crushes the bulk organic waste. The organic waste in the tank is gradually dried, and the organic waste becomes a powder having a water content of 5 to 10% by the end of the set time of the first timer.

[0010] Then, during the time limit operation of the first timer, the operation control device stops the operation of the electric heater and the blower to end the drying process, and moves the rotating shaft of the stirring mechanism in one direction (discharge side).
To open the discharge door of the automatic door mechanism and start counting by the second timer. By the rotation of the stirring blade of the stirring mechanism, the waste in the tank is sent to the discharge port side, and discharged from the discharge port to the outside of the tank. Then, at the time limit operation of the second timer, the stirring mechanism is stopped, and the discharge door of the automatic door mechanism is closed, and the operation ends. Since the time obtained by adding the set time of the first timer and the second timer is set to be shorter than the power supply time of the midnight power, all the processing is surely finished during the power supply time period of the midnight power, and the next garbage input Can be prepared.

An intake passage is formed outside the side wall of the storage tank in communication with the side of the heating chamber, and the suction side of the blower is connected to the side of the heating chamber opposite to the intake passage via a duct. With this structure, when the outside air sucked into the heating chamber is sucked through the intake passage, the heat is heated by the heat of the side wall of the storage tank, so that the heat can be effectively used and the operation can be performed economically.

Further, a stop position detector for detecting the stop position of the stirring blade is provided opposite to the rotation axis of the stirring blade of the stirring mechanism, and when the stirring blade reaches a position directly below the input port of the storage tank, the stirring is performed. If stirring blade stop control means for stopping the blades is provided, the stirring blades are stopped just below the input port in the storage tank and do not disturb the input of garbage, so that the input of organic waste such as garbage can be performed. It can always be performed well.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a front view of the organic waste treatment apparatus, FIG. 2 is a right side view thereof, and FIGS. 3 and 4 are sectional views thereof. Storage tank 1 for storing organic waste such as garbage
Is formed in a horizontal configuration, a semi-cylindrical bottom is provided below the main body formed in a rectangular box shape by a metal plate, and the bottom surface has a semi-peripheral shape of a cylinder. Input port and input hatch 2 for inputting organic waste into the upper part of the storage tank 1
The outlet 4 is formed on the front side of the bottom, and the outlet 4 is provided with an automatic door mechanism 40 having a discharge door 41.

As shown in FIG. 1, a discharge door 41 slidable left and right is provided outside the discharge port 4, and a rack 4 is provided above the discharge door 41 as a drive shaft via a coil spring 42.
3 are connected, and the rack 43 is inserted into a pinion mechanism 44 driven by an electric motor 45. By the operation of the electric motor 45, the rack 43 moves in the left and right direction via the pinion mechanism 44, and the discharge door 41 slides left and right through the coil spring 42 to be opened and closed.

The coil spring 42 is mounted between a spring seat 43a fixed to the rack 43 and a door-side spring seat 41a, and the rack 43 is slidably inserted into a hole of the door-side spring seat 41a. . The vertical movement of the rack 43 is transmitted to the door 41 via the coil spring 42, and even if a foreign object enters between the door and the discharge port 4 and the discharge door 41 is locked halfway, the electric motor 45 moves the rack 43 for a predetermined stroke. Move and stop to prevent burning. Opposite to the end of the rack 43, a limit switch 46 that is turned on when the door is closed and a limit switch 47 that is turned on when the door is opened are provided.

Further, a heating chamber 6 is formed below the storage tank 1 so as to surround the bottom thereof from below. A communication hole 7 is formed on the left side of the heating chamber 6, an intake passage 8 is formed vertically outside the left side wall 5 of the storage tank 1, and an intake port 9 is opened at an upper portion of the intake passage 8. The surroundings of the storage tank 1 and the heating chamber 6 are surrounded by a heat insulating wall containing a heat insulating material, and a blow duct 13 for blowing heated air into the tank is connected to an upper part of the storage tank 1. The discharge side of the blower 14 is connected to the blow duct 13, and the suction side of the blower 14 is connected to the right side wall of the heating chamber 6, that is, the intake passage 8 via the ventilation duct 12 as shown in FIGS. 2 and 4. It is connected to the side wall opposite to the communication hole 7 side.

An electric heater 10 is disposed in the heating chamber 6 as a heating source. The heat of the electric heater 10 is directly radiated to the semicylindrical bottom of the storage tank 1 to heat the storage tank 1 and heat the air in the heating chamber 6. Therefore,
By operating the blower 14, air in the heating chamber 6 is sucked through the ventilation duct 12, and by the suction, outside air is sucked into the heating chamber 6 through the suction port 9, the suction passage 8, and the communication hole 7. The air inside is heated by the electric heater 10 and blown into the storage tank 1 through the ventilation duct 12, the blower 14, and the blowing duct 13. In the upper part of the storage tank 1,
An exhaust duct 11 for performing natural exhaust is provided, and a blower 14 is provided.
The steam and the air are exhausted through the exhaust duct 11 from the inside of the tank at which the pressure becomes positive due to the air blowing by the air.

Further, inside the storage tank 1, an organic waste stirring mechanism 30 is provided. The stirring mechanism 30 horizontally supports the rotation shaft 31 at the center of the lower part of the storage tank 1, and places the rod around the rotation shaft 31 at the positions of 0 ° and 180 ° as shown in FIGS. And a pair of rods are juxtaposed at a predetermined interval in the axial direction, and a stirring blade 32 is attached to the tip of each rod in a T-shape. The stirring blade 32 is attached to the rotating shaft 31 with a slight bending or inclination so as to send the waste in the tank to the vicinity of the discharge port 4 when rotating in one direction.

The rotating shaft 31 has a sprocket 36 fixed to the end thereof linked to a stirring motor 33 via a chain 35, and is rotated and driven by the stirring motor 33.
The stirring motor 33 is driven and controlled by the operation control device 20 to be described later so as to repeat normal rotation and reverse rotation at regular intervals.
Further, a stop position detector 34 is provided to face a pin protruding from the outer periphery of the end of the rotating shaft 31. As shown in FIG. 3, the stop position of the stirring blade 32 of the stirring mechanism 30 is set to a substantially horizontal position so as not to be located immediately below the inlet, and a limit switch or the like is used to electrically detect the stop position. A stop position detector 34 is provided facing a pin provided at an end of the rotating shaft 31. A temperature sensor 23 for detecting the temperature of the organic waste in the storage tank 1 is attached to the side wall 5 of the tank.

A partition plate 27 is attached to the upper part of the storage tank 1 so as to vertically separate the exhaust port side and the blowing side in the upper space. The partition plate 27 is provided between the opening of the exhaust duct 11 and the blow duct 13.

FIG. 5 shows a block diagram of the electric control system. The operation control device 20 includes, for example, a general-purpose sequencer, and includes a first timer 21 and a second timer 22 for setting at least the operation time. First timer 2
1 is set here for 7 hours and the second timer 22 is set for 50 minutes. The blower 14, the stirring motor 33 of the stirring mechanism 30, and the motors of the automatic door mechanism 40 are connected to the operation control device 20 and are controlled and driven.

Further, a stop position detector 34 is connected to the operation control device 20 for determining a stop position of the stirring blade 32 of the stirring mechanism 30, and the temperature controller 24 for controlling a heating temperature in the tank. Is connected. The temperature controller 24 has a built-in temperature setting device for setting the temperature, is connected to the electric heater 10, and has a temperature sensor 2 provided on the bottom side wall of the storage tank 1.
3 are connected. The temperature controller 24 controls the electric heater 1 so that the temperature of the storage tank 1 detected by the temperature sensor 23 becomes the set temperature.
0 energization is controlled.

The control program of the operation control device 20 generally starts the counting of the first timer 21 when the power is turned on, and starts the stirring mechanism 30 and the blower 1.
4, and start the electric heater 10 to start the treatment of the organic waste. Then, the stirring blade 32 of the stirring mechanism 30 is controlled so as to repeat the normal rotation / reversal at regular time intervals, and the electric heater 10 is controlled at the time limit operation of the first timer 21, that is, seven hours later.
And the blower 14 are stopped, the stirring mechanism 30 is switched to the discharging operation, the count of the second timer is started, and the automatic door mechanism 40 is opened. Then, at the time limit operation of the second timer 22 after 50 minutes, the stirring mechanism 30 is stopped and the automatic door mechanism 40 is closed. The power supply of the operation control device 20 is connected to a power supply facility for late-night power (nightly discounted power).

Next, the operation of the organic waste treatment apparatus having the above configuration will be described with reference to the timing chart of FIG. The organic waste (garbage) is introduced into the storage tank 1 of the processing apparatus by opening the upper input hatch 2. At this time, the stirring blades 32 of the stirring mechanism 30 in the storage tank 1 are stopped at a substantially horizontal position instead of directly below the input hatch 12 (input port) as shown by the solid line in FIG. Does not hinder the charging, and the organic waste can be satisfactorily charged into the tank. After charging the organic waste, the charging hatch 2 is closed and the power switch of the operation control device 20 is turned on.

As shown in FIG. 6, a predetermined time (midnight 0)
), Power supply of the midnight power is started, the operation control device 20 starts operating, the stirring mechanism 30 is activated, and the stirring blade 32 repeats normal rotation and reversal at regular time intervals.
When the heating chamber 4 is started, the air in the heating chamber 6 is blown into the storage tank 1 and the electric heater 10 is energized to generate heat, thereby heating the inside of the heating chamber 6. In addition, the count of the first timer 21 starts.

During the operation of the processing apparatus, the stirring mechanism 30 rotates the stirring blades 32 at regular intervals (for example, 20 seconds to 60 seconds).
Invert and stir the organic waste in the tank. Electric heater 1
Numeral 0 generates heat when energized, and the radiant heat heats the bottom of the housing tank 1 and also heats the air in the heating chamber 6. By operating the blower 14, the heated air in the heating chamber 6 is sent to the blowing duct 13 through the ventilation duct 12, and the heated air is blown into the upper part of the storage tank 1 therefrom. The inside of the storage tank 1 is heated to, for example, about 70C to 90C.

The organic waste in the storage tank 1 is heated while being stirred, evaporating the internal vapor and drying.
Outside air enters the heating chamber 6 through the intake port 9 and the intake passage 8, but since the side wall 5 of the intake passage 8 is the side wall of the storage tank 1 and is heated, the outside air is heated when passing therethrough. The heated air is sucked into the heating chamber 6.

Therefore, heated air, not cold air, is sucked into the heating chamber 6, and the air is efficiently heated in the heating chamber 6 and blown into the storage tank 1. The electric heater 1
Since the radiation heat of 0 is transmitted to the bottom of the storage tank 1 and the storage tank 1 is also heated by the conduction heat at the bottom, the heating efficiency is high and the operation is economical. Electric heater 10 is temperature controller 2
4 is controlled so that the temperature at the bottom of the storage tank 1 detected by the temperature sensor 23 becomes a preset temperature.

Since the heated air is blown into the storage tank 1 by the operation of the blower 14, the pressure in the tank becomes positive, and the water vapor evaporated from the stirred organic waste is discharged to the exhaust duct 11.
And the water content of the organic waste in the storage tank 1 gradually decreases.

As described above, the electric heater 10, the blower 1
4. By operating the stirring mechanism 30, the inside of the storage tank 1 is heated to 70 ° C. to 90 ° C., and the steam generated from the organic waste in the storage tank 1 is exhausted from the exhaust duct 11,
The organic waste in the tank is gradually dried, and after 7 hours, its water content is reduced to about 5% to 10% and becomes powder.

When the set time (7 hours) of the first timer 21 has elapsed, the electric heater 10 is stopped and the blower 14 is stopped by the timed operation, and the automatic door mechanism 40 operates to open the discharge door 41. Then, the stirring mechanism 30 rotates the stirring blade 32 only in one direction for discharging.
At the same time, the count of the second timer 22 starts. The discharge door 41 of the automatic door mechanism 40 is opened, the stirring blade 32 rotates in one direction, operates to send the organic waste in the tank to the right side, and is located on the right side of the bottom of the storage tank in the open state. From the discharge port 4, the dried organic waste is gradually discharged.

This discharging operation is performed only for the set time (50 minutes) of the second timer 22. When the second timer 22 operates for a time limit, the stirring mechanism 30 stops operating and the automatic door mechanism 40 operates.
Performs a closing operation, and closes the discharge door 41 thereof. When the stirring mechanism 30 stops, the pin at the end of the rotating shaft 31 strikes the stop position detector 34, and stops when the stirring blade 32 reaches the horizontal position. To stop.

As a result, the inside of the storage tank 1 of the processing apparatus returns to an empty state, the stirring blades 32 of the stirring mechanism 30 stop at a horizontal position where the input of the organic waste is easy, and the automatic door mechanism 40 discharges the waste. The door 41 is closed to return to a state where the organic waste can be charged again. Since this time is approximately 7:50, some time after that, the midnight power supply end time (8:00) is reached.
Power supply is cut off.

As described above, it is possible to efficiently dry organic waste by using inexpensive late-night power, which is supplied only during a specific time period, and to provide a stirring mechanism before the supply of late-night power is stopped. 30 is stopped at a horizontal position where the rotating blades 32 can be inserted, and the automatic door mechanism 40 is operated by the discharging door 4 for discharging.
After the power supply is stopped, the device can be returned to a state in which organic waste can be charged at any time after the power supply is stopped. It can be used to dry organic waste such as garbage every day.

In this processing apparatus, the heating chamber and the storage tank are heated using an electric heater to dry the organic waste, but the outside air sucked into the heating chamber is heated by the heat of the side wall of the storage tank. Since the air is sucked through the intake passage and the inside of the storage tank is heated by the heated air and the bottom heat conduction, the organic waste can be efficiently and economically dried.

In the above embodiment, the discharge port and the automatic door mechanism are provided on the front side of the bottom of the storage tank, but the discharge port and the automatic door mechanism may be provided on the side of the bottom. Also,
In addition to the drying treatment, a fermentation treatment of organic waste can be performed.

[0037]

As described above, according to the organic waste treatment apparatus of the present invention, the operation of the electric heater, the blower, and the stirring mechanism is controlled using the first timer, and the second timer is used. Control the discharge operation by the automatic door mechanism and the stirring mechanism, and set the time obtained by adding the set time of the first timer and the second timer to less than the power supply time of specific power such as midnight power, until the power supply stops. When all the processing operations are completed, the discharge door of the automatic door mechanism is closed, and the apparatus can be reliably returned to a state where organic waste can be charged.

[Brief description of the drawings]

FIG. 1 is a front view of an organic waste treatment apparatus showing one embodiment of the present invention.

FIG. 2 is a right side view of the processing apparatus.

FIG. 3 is a sectional view taken along the line III-III of FIG. 1;

FIG. 4 is a sectional view taken along line IV-IV of FIG. 2;

FIG. 5 is a block diagram of an electric control system.

FIG. 6 is a timing chart showing an operation of the processing apparatus.

[Explanation of symbols]

 1-Accommodation tank, 4-Exhaust port, 6-Heating chamber, 8-Intake passage 10-Electric heater 11-Exhaust duct 14-Blower 20-Operation control device 21-First timer 22-Second timer 30-Stirring mechanism, 32-stirring blade, 40-automatic door mechanism 41-discharge door

Claims (3)

[Claims] 1. An organic waste is charged into a storage tank, and while the storage tank is heated, a stirring mechanism disposed in the storage tank is driven to stir the organic waste to perform drying or fermentation treatment. In the organic waste treatment apparatus, an electric heater disposed in a heating chamber surrounding the outside of the bottom of the storage tank; a blower for blowing air sucked from the heating chamber into the storage tank; and A stirring motor for forward / reverse rotation linked to a rotating shaft; an automatic door mechanism for automatically opening and closing a discharge port provided at the bottom of the storage tank; and a stirring motor provided around the rotating shaft of the stirring mechanism. A plurality of stirring blades for transporting the organic waste in the tank toward the discharge port by rotating in one direction, and receiving electric power of a specific electric power, the electric heater, the blower, the stirring motor, and the automatic door mechanism. An operation control device that controls and drives The operation control device includes a first timer that starts counting when power is supplied and sets a processing time, and discharges the organic waste that has started counting and completed processing from the storage tank when the first timer timed. A second timer for setting the discharge time of the first timer is provided, and a time obtained by adding the set time of the first timer and the second timer is set to be less than the power supply time of the specific power, and when the count of the first timer is started. Activating the electric heater, blower, and stirring mechanism, stopping the electric heater and the blower during the timed operation of the first timer, and opening the automatic door mechanism at the start of counting by the second timer, Activating the stirring mechanism to start discharging organic waste, stopping the stirring mechanism and closing the automatic door mechanism at the discharge port during the timed operation of the second timer. Organic waste treatment unit for causing. 2. An intake passage is formed outside a side wall of the storage tank in communication with a side portion of the heating chamber, and a side of the heating chamber opposite to the intake passage through a duct on a suction side of the blower. The organic waste treatment apparatus according to claim 1, wherein the apparatus is connected to a unit. 3. A stop position detector for detecting a stop position of the stirring blade is provided opposite to a rotation axis of the stirring blade of the stirring mechanism, and the stirring blade reaches a position not directly below an input port of the storage tank. 2. The organic waste treatment apparatus according to claim 1, further comprising: stirring blade stop control means for stopping the stirring blade when the operation is performed.