JPH09253617A - Garbage treatment apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To raise efficiency of treatment and enable easy cleansing of an interior of an agitating tank by planning to make circulative agitation action and fermentation- and-decomposition action of garbage uniform and avoiding dead space within an agitating tank. SOLUTION: This garbage treatment apparatus comprises a vertical agitating tank 1 having a circular cylinder shape and a bottom, a frame 2 pivoting the vertical agitating tank 1, an output shaft 6 penetrating and protruding from a bottom wall of the vertical agitating tank 1, a driving source for supplying rotating force to the output shaft 6, a central shaft 8 having one end engaged with the output shaft 6 and a screw feeder 10 mounted on the central shaft 6 with a hollow space 12 with respect to the central shaft 8. Digestion and volume reduction of the garbage are carried out by circulating action wherein the garbage is agitated in the vertical tank 1 together with aerobic bacteria and medium material and simultaneously the screw feeder 10 is loaded with the garbage to convey the garbage upward with rotation of the screw feeder 10 and the garbage is made to successively fall onto the bottom of the agitating tank 1 through the space 12 formed between the screw feeder 10 and the central shaft 8 and again the garbage is conveyed upward and decomposing-and-fermenting action wherein the garbage is decomposed and fermented by action of the charged aerobic bacteria.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a cafeteria, a restaurant,
Raw foods such as cooked foods and leftover foods discharged from households such as employee dormitories and student dormitories, etc. are agitated with aerobic microorganisms and appropriate media materials for digestion and fermentation decomposition. The present invention relates to a waste treatment device.

[0002]

2. Description of the Related Art Generally, kitchen garbage, such as cooking garbage produced in eating and drinking establishments and households, is usually collected by a public garbage truck on a designated day and transported to a processing site for processing. On the other hand, commercial or household food waste processing devices have been conventionally provided in order to efficiently dispose of food waste generated daily. The basic configuration of these food waste treatment devices is that the horizontal stirring tank normally installed in the horizontal type is horizontally inserted through the rotating shaft with the stirring claws and sticks attached, and the raw garbage is put in the horizontal stirring tank. A structure is adopted in which the fermented substance is charged, the lid is closed, and the rotary shaft is rotated by a motor to ferment and decompose the food waste to reduce the volume.

[0003]

However, since the above-mentioned food waste treating apparatus which has been conventionally used has a structure in which the claws and sticks for stirring are rotated inside the horizontal stirring tank, the raw food waste thrown in is thrown in. It is difficult to ferment the waste while circulating and stirring it uniformly, and there is a drawback that the fermentation decomposition action tends to be non-uniform. Further, since the stirring claws or rods cannot be removed by one-touch operation, there is a problem that a complicated work for removing the claws or rods is required when cleaning the inside of the horizontal stirring tank.

Further, since a dead space where the above-mentioned claws or rods do not contact is likely to occur near the side wall or the bottom wall in the horizontal stirring tank, the food waste packed in such a dead space remains without being processed. This leads to a decrease in processing efficiency and a decrease in work efficiency due to the generation of a large amount of residue when the processed product is discharged from the horizontal stirring tank, and a problem that the performance of the food waste disposal device itself is deteriorated. have.

Therefore, the present invention solves the problems of such conventional food waste processing devices and ferments the food waste while circulating and stirring the same, thereby making the fermentation decomposition action uniform and improving the processing efficiency. It is an object of the present invention to provide a novel food waste processing device that eliminates a dead space that causes a residue in a vertical stirring tank and can easily clean the inside of the vertical stirring tank.

[0006]

In order to achieve the above object, the present invention provides a vertical stirring tank having a bottomed cylindrical shape, a frame for axially supporting the vertical stirring tank, and a bottom wall of the vertical stirring tank. A hollow portion is formed between the output shaft that projects through the output shaft, the drive source that supplies rotational force to the output shaft, the central axis at which one end is fitted to the output shaft, and the central axis. It is equipped with a screw feeder, and while mixing the food waste with the aerobic microorganisms and the medium material in the vertical stirring tank, the garbage is placed on the screw feeder and conveyed upward as the screw feeder rotates. From the hollow part formed between and to the bottom of the vertical stirring tank, it is sequentially dropped and raised again, and the digestion and volume reduction of food waste is carried out by the decomposition and fermentation effects of the aerobic microorganisms introduced. Yo To provide a garbage disposal device was. Further, means for opening and closing a lid for sealing the vertical stirring tank at the opening of the vertical stirring tank, means for pivotally supporting the other end of the central shaft by the lid when the lid is closed, screw A means arranged inside the vertical stirring tank so that the outer peripheral portion of the feeder is close to the inner wall surface of the vertical stirring tank 1, and the vertical stirring tank is rotatably supported on the frame at least horizontally. Means for providing a vertical stirring tank with an air inlet and an air outlet.

Further, a drive motor with a speed reducer is arranged as a drive source on the bottom plate of the frame, and a gear unit in which a bevel gear is installed is arranged adjacent to the drive motor to drive the bevel gear. Means for engaging a bevel gear fixed to the output shaft of the motor to transmit the rotational force to the output shaft via the bevel gear, and the tip of the lock rod between the vertical stirring tank and the frame A means provided with a lock mechanism for maintaining the vertical stirring tank and the frame in a locked state by inserting the lock plate formed in the gear part into the hole of the lock member fixed to the gear unit and rotating the lock plate by a predetermined angle. provide.

According to such a food waste processing apparatus, the vertical stirring tank is locked to the frame, and then the garbage is put into the vertical stirring tank, and the aerobic microorganisms and the medium material for adjusting the water content are added and sealed. After that, by driving the drive motor, the rotational force is transmitted to the central axis of the screw feeder.
The screw feeder starts rotating. Garbage is mixed with aerobic microorganisms and media materials, placed on a screw feeder and conveyed upward, then falls through the hollow part to the bottom of the vertical stirring tank and rises again. As a result, the stirring effect of the food waste is sufficiently enhanced, and at the same time, when the food waste falls through the hollow portion, it is in sufficient contact with the air, so that the decomposition of the food waste and the fermentation action by the action of aerobic microorganisms are promoted.

When the processed food waste is taken out or cleaned, the lock rod is operated to release the locked state between the vertical stirring tank and the frame, and then the vertical stirring tank is horizontally moved about 90 degrees. Rotate the screw feeder manually and rotate the screw feeder manually to carry out the processed food waste to the outside, then remove the central shaft from the output shaft and remove the raw food remaining in the vertical stirring tank. Cleaning work is performed at the same time as the waste is completely discharged.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION A concrete embodiment of a food waste processing apparatus according to the present invention will be described below with reference to the drawings. 1 is a front sectional view of this embodiment, FIG. 2 is a plan view showing a state in which a lid body of FIG. 1 is removed, and FIG. 3 is a side sectional view of a main part of the apparatus of FIG. 1 as viewed from the right side. In the figure, 1 is a vertically arranged cylindrical vertical stirring tank with an open top, and 2 is a frame that supports the vertical stirring tank 1.
Is rotatably supported with respect to the frame 2 so as to be rotatable at least in a horizontal direction about a support shaft 20 as a rotation center.

A drive motor 3 having a speed reducer as a drive source is arranged on the bottom plate 2a of the frame 2, and a gear unit 4 is arranged adjacent to the drive motor 3. A bevel gear 5 is installed in the gear unit 4,
A bevel gear 3a fixed to the output shaft of the drive motor 3 meshes with the bevel gear 5.

Reference numeral 6 denotes an output shaft that rotates by receiving the rotational force from the bevel gear 5, and the bevel gear 5 is the output shaft 6.
Is integrally fixed to the base of the. Reference numeral 8 denotes a central shaft, and one end portion 8a of the central shaft 8 is detachably attached to a connecting rod 7 provided integrally with the tip of the output shaft 6 and a rotational force can be transmitted. In addition, one end 8 of the central shaft 8 is connected to the connecting rod 7.
You may screw a together.

Reference numeral 10 denotes a screw feeder that rotates together with the central shaft 8, and this screw feeder 1
The outer peripheral portion of 0 is arranged in the vertical stirring tank 1 having a cylindrical shape with a bottom while keeping the shape close to the inner wall surface of the vertical stirring tank 1.
Reference numeral 9 is a lid that covers the upper surface of the vertical stirring tank 1.
The other end portion 8 of the central shaft 8 is attached to the shaft supporting portion 9a provided on the back surface side of the
b is rotatably supported.

Reference numeral 11 is a support rod that connects the screw feeder 10 and the central shaft 8. Therefore, this support rod 1
1, the rigidity of the screw feeder 10 during rotation is maintained. This screw feeder 10
Extends to a position close to the inner wall surface of the vertical stirring tank 1, and a hollow portion 12 is formed between the screw feeder 10 and the central shaft 8 so as to penetrate therethrough.

Reference numeral 13 shown in FIG. 2 is an air inlet into the vertical stirring tank 1, and 14 is an air outlet thereof. This air outlet 1
An exhaust fan (not shown) is installed at 4, and the exhaust fan diffuses into the atmosphere through a deodorizing device.

Next, a lock mechanism provided between the vertical stirring tank 1 and the frame 3 will be described. That is, 1 shown in FIGS.
Reference numeral 5 denotes a lock rod for controlling the locked state between the vertical stirring tank 1 and the frame 3, and a lock plate 15a formed at the inner tip of the lock rod 15 is a lock fixed to the gear unit 4. The vertical stirring tank 1 and the frame 3 are maintained in a locked state by rotating the lock rod 15 by a predetermined angle after inserting it into the hole of the member 4a.

Since it is also effective to attach a heater for heat retention to the outer wall surface of the vertical stirring tank 1, the heater for heat retention and the heating power source are separately prepared depending on the season and the type of the object to be treated. (Not shown).

The mode of operation of the food waste processing apparatus during operation will be described below. First, in order to put the vertical stirring tank 1 into operation, the lock plate 1 at the tip of the lock rod 15
5a is inserted into the hole opened in the lock member 4a and rotated by a predetermined angle, and the vertical vertical stirring tank 1 is locked to the frame 3. Then, after fully draining kitchen garbage, such as kitchen garbage generated from eating and drinking facilities, households, etc., and throwing it into the vertical stirring tank 1, a medium material for aerobic microorganisms and water adjustment,
Further, a powder for fermentation and deodorization (for example, EM bacteria) is added and the lid 9 is closed. Coffee meal or the like is suitable as the medium material.

Next, when the power source of the drive motor 3 is turned on, the rotational force of the drive motor 3 is transmitted from the bevel gear 3a fixed to the output shaft to the bevel gear 5 installed in the gear unit 4, The rotational force of the drive motor 3 is converted upward. Since this rotational force is transmitted from the output shaft 6 to the central shaft 8 via the connecting rod 7, the screw feeder 10 connected to the central shaft 8 starts rotating.

Then, the food waste put into the vertical stirring tank 1 is stirred with aerobic microorganisms, a medium material, and powder for fermentation and deodorization (for example, EM bacteria) while the screw feeder 10 rotates. And a hollow portion 12 formed between the screw feeder 10 and the central shaft 8 while being placed on the screw feeder 10 and sequentially conveyed upward.
Then, it sequentially falls to the bottom of the vertical stirring tank 1 and rises again by the rotation of the screw feeder 10. In this way, the stirring effect of the food waste introduced by the circulating action in the vertical stirring tank 1 is sufficiently enhanced, and at the same time, when the hollow portion 12 is dropped, it is sucked into the vertical stirring tank 1 from the air suction port 13. Since sufficient contact is made with the generated air, decomposition of food waste and fermentation by the action of aerobic microorganisms are promoted.

During such an operation, the gas or moisture generated in the vertical stirring tank 1 is discharged from the air discharge port 14 by an exhaust fan or the like, and passes through a deodorizing device installed as necessary before being released into the atmosphere. Dissipated.

Since the garbage is reduced in volume by the digestion and fermentation decomposition and converted into a material effective as a soil activator, the processed food waste is taken out of the vertical stirring tank 1 at regular intervals and the flower bed, Spraying it on farmland is an effective way to use it. Therefore, the operation of taking out the processed food waste from the vertical stirring tank 1 will be described below.

That is, when the processed food waste is taken out from the vertical stirring tank 1, the vertical stirring tank 1 arranged vertically with respect to the frame 2 during operation is replaced by the frame as shown in FIG. Perform the work by tilting sideways with respect to 2. First, the lock rod 15 shown in FIG. 2 is operated to pull out the lock plate 15a at the tip of the lock rod 15 from the hole of the lock member 4a to release the locked state of the vertical stirring tank 1 and the frame 3. The bevel gear 3a fixed to the output shaft of the drive motor 3 and the bevel gear 5 are disengaged from each other, and the vertical stirring tank 1 is rotated horizontally about the spindle 20 as a rotation center as shown by an arrow A in FIG. Tilt about 90 degrees in the direction.

Next, after the lid 9 is opened, the vertical stirring tank 1 is maintained in a state of being horizontally rotated by about 90 degrees and an appropriate handle (not shown) is attached to the other end 8b of the central shaft 8. ) And rotate the handle to operate the screw feeder 10
Vertical stirring tank 1
To the outside, and then, as shown by the arrow B in the figure, one end 8a of the central shaft 8 is pulled out from the connecting rod 7, and the central shaft 8 and the screw feeder 10 are taken out of the vertical stirring tank 1. The cleaning work can be carried out at the same time as the processed food waste remaining in the vertical stirring tank 1 is completely discharged.

In this way, the processed food waste is treated with the vertical stirring tank 1
Completely, and at the same time, a cleaning operation is performed, and then the vertical stirring tank 1 is raised to the frame 2 by about 90 degrees, and then the lock rod 15 is operated to cause the vertical stirring tank 1 on the frame 2.
By fixing the item, it is returned to the used state, and the process of throwing in the garbage is performed again.

[0026]

As described in detail above, according to the apparatus for treating food waste of the present invention, microorganisms that aerobically produce food waste in a vertical stirring tank that uses the stirring tank as a vertical tank during stirring fermentation. Also, the stirring effect can be sufficiently enhanced by repeating the transportation and dropping from the hollow portion while being stirred by the screw feeder together with the medium material, and since it is in sufficient contact with the inhaled air, the action of aerobic microorganisms It is possible to sufficiently promote the decomposition and fermentation action of food waste due to and to homogenize the reaction. During the above operation, the outer peripheral part of the screw feeder keeps the shape close to the inner wall surface of the vertical stirring tank, so there is no dead space in the side part of the vertical stirring tank or near the bottom wall, and the stirring is uniform. Therefore, there is no fear that food waste will remain untreated and that treatment efficiency will decrease.

Further, when the processed food waste is taken out or cleaned, it can be discharged by rotating the vertical stirring tank at least in the horizontal direction and manually rotating the screw feeder. That is, since the vertical stirring tank is inclined, the processed food waste that has been completely fermented is located on the inner wall of the bottom vertical stirring tank, and can be discharged by the screw feeder. Further, since the central shaft and the screw feeder itself can be removed by one-touch and taken out to the outside, it becomes possible to easily carry out the cleaning work of the inner wall surface of the vertical stirring tank. Furthermore, no residue remains in the vertical stirring tank during discharge.

Further, by tilting the vertical stirring tank for discharging the processed food waste, the central axis of the screw feeder is disengaged from the drive source, which is safe. Further, the structure of the lock mechanism for releasing the engagement between the central axis of the screw feeder and the drive source is simple.

Therefore, according to the present invention, the fermentation and decomposition action is made uniform by enhancing the circulation and stirring action of food waste to enhance the treatment efficiency, and the untreated in the vertical stirring tank. It is possible to provide a food waste processing device that eliminates residues and can easily clean the inside of a vertical stirring tank.

[Brief description of drawings]

FIG. 1 is a front sectional view of a food waste processing device according to an embodiment.

FIG. 2 is a plan view showing a state where the lid body of FIG. 1 is removed.

FIG. 3 is a side cross-sectional view of the main part of the device of FIG.

FIG. 4 is an operation mode diagram showing a state in which the vertical stirring tank is horizontally rotated.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Vertical stirring tank 2 ... Frame 3 ... Drive motor 4 ... Gear unit 4a ... Lock member 5 ... Bevel gear 6 ... Output shaft 7 ... Connecting rod 8 ... Central shaft 9 ... Lid 10 ... Screw feeder 11 ... Support Rod 12 ... Hollow part 13 ... Air inlet 14 ... Air outlet 15 ... Lock rod 15a ... Lock plate

Claims (9)

[Claims] 1. A vertical stirring tank having a bottomed cylindrical shape, a frame for axially supporting the vertical stirring tank, an output shaft protruding through a bottom wall of the vertical stirring tank, and a rotational force applied to the output shaft. It consists of a drive source to be supplied, a central shaft with one end fitted to the output shaft, and a screw feeder that is installed in the central shaft by forming a hollow portion between the central shaft and While stirring the garbage together with the aerobic microorganisms and the medium material, it is placed on the screw feeder with the rotation of the screw feeder and conveyed upward, and from the hollow part formed between the screw feeder and the central shaft, the vertical stirring tank An apparatus for treating food waste, characterized in that the garbage is digested and reduced in volume by the circulation action of sequentially dropping it to the bottom and raising it again, and the decomposition and fermentation actions of the introduced aerobic microorganisms. 2. The food waste processing device according to claim 1, wherein a lid for sealing the vertical stirring tank is provided at the opening of the vertical stirring tank so as to be openable and closable. 3. The food waste processing device according to claim 2, wherein the other end of the central shaft is pivotally supported by the lid when the lid is closed. 4. The food waste disposing apparatus according to claim 1, wherein the screw feeder is arranged in the vertical stirring tank so that the outer peripheral portion of the screw feeder is close to the inner wall surface of the vertical stirring tank 1. 5. The food waste processing device according to claim 1, wherein the vertical stirring tank is rotatably supported at least horizontally by a frame. 6. The food waste processing device according to claim 1, wherein the vertical stirring tank is provided with an air inlet and an air outlet. 7. A bevel gear is arranged on a bottom plate of a frame by arranging a drive motor with a speed reducer as a drive source, and a gear unit in which a bevel gear is installed adjacent to the drive motor. 7. The garbage according to claim 1, 2, 3, 4, 5 or 6, wherein a bevel gear fixed to an output shaft of a driving motor is meshed with the bevel gear to transmit a rotational force to the output shaft. Processing equipment. 8. A vertical stirring tank having a bottomed cylindrical shape, a frame for rotatably supporting the vertical stirring tank at least horizontally, and an output shaft projecting through a bottom wall of the vertical stirring tank. A drive motor having a speed reducer as a drive source arranged on the bottom plate of the frame; a gear unit provided adjacent to the drive motor and having a bevel gear with an output shaft fixed thereto; A bevel gear fixed to the output shaft of a drive motor that meshes with the gear, a central shaft with one end fitted to the output shaft, and a hollow portion formed between the central shaft and the central shaft. It consists of a screw feeder and a lid that can be opened and closed to seal the vertical stirring tank, and while the raw garbage is stirred with the aerobic microorganisms and the medium material in the vertical stirring tank, the screw feeder is rotated to rotate. Place and carry upwards By the circulation action of feeding and sequentially dropping it from the hollow part formed between the screw feeder and the central shaft to the bottom of the vertical stirring tank and raising it again, the decomposition and fermentation action by the action of the aerobic microorganisms introduced. After digesting and reducing the volume of food waste, the bevel gear and bevel gear fixed to the output shaft of the drive motor are disengaged, and the vertical stirring tank is rotated approximately 90 degrees in the horizontal direction to raise the vertical length. A food waste processing device, which discharges the processed food waste from the mold stirring tank. 9. A lock plate formed at the tip of the lock rod is inserted between the vertical stirring tank and the frame into a hole of a lock member fixed to the gear unit and rotated by a predetermined angle. 9. The food waste processing device according to claim 7, further comprising a lock mechanism for maintaining the vertical stirring tank and the frame in a locked state.