JPH07204609A - Garbage disposer - Google Patents

Abstract

PURPOSE:To provide a garbage disposer in which decomposition capacity of garbage is prevented from being lowered by insufficiency of air. CONSTITUTION:A garbage disposer is equipped with both an agitator 3 formed by attaching blades 2 to a rotating shaft 1 and a treating tank 6 formed by filling the treating material 5 for decomposing and treating garbage 4 in the tank. Garbage 4 and the treating material 5 are freely agitated by rotation of the blades 2 accompanying rotation of the rotating shaft l. In the garbage disposer, the inside of the rotating shaft 1 is hollowed along the longitudinal direction and formed into an air passage part 7 capable of passing air. Air- spouting ports 8 communicating with the air passage part 7 are opened on the circumferential surface of the rotating shaft 1. An air-delivering means 9 for sending air to the air passage part 7 is equipped. The air sent out from the air-delivering means 9 is sent to the air passage part 7 of the rotating shaft 1. The air in the air passage part 7 is spouted from the air-spouting ports 8 and forcedly supplied to the mixture of garbage 4 and the treating material 5.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Conventionally, it has been practiced to decompose sludge containing organic substances and water by using microorganisms and dispose of the sludge to the extent that it does not affect the environment, and as an example, Japanese Patent Publication No. 2-34679. Japanese Patent Publication discloses a method of treating sludge with microorganisms using wood chips. According to the sludge treatment method described in this publication, a wood fragment serving as a microbial culture substrate is filled in a treatment tank as a treatment medium layer, and at the same time, water-containing sludge is caused to flow down to the treatment medium layer to generate in the treatment medium layer. , Digests and decomposes fats, proteins, cellulose, etc. in sludge by the propagated microorganisms to reduce biochemical oxygen consumption (BOD) and remove suspended solids (SS), and dispose of treated sludge That is.

Recently, there has been proposed a food waste treatment device to which such a sludge treatment technique is applied, but most of them are equipped with a stirring device formed by providing a rotary shaft with a plurality of blades. However, it has been attempted to stir and mix the raw garbage and the treated material such as wood chips by the stirring action of the blades that rotate as the rotary shaft rotates. And so that air can be efficiently taken into the mixture of food waste and processing material,
Various blade shapes and blade rotation speeds have been studied.

[0004]

However, since the viscosity of garbage, the amount of water, the shape, the amount of generation, etc. of food waste differ from day to day, the mixing ratio and mixing state of food waste and processing materials are not always constant. Therefore, no matter what kind of blade shape or blade rotation speed was adopted, it was not possible to efficiently take in air according to the mixing ratio and mixing state of all food waste and treated materials. As a result, in the above-mentioned conventional example, there was a problem that the mixture of raw garbage and the processing material became insufficient in air and the decomposition ability of raw garbage was lowered.

Further, in the above-mentioned conventional example, since the air in the processing tank is taken into the mixture as it is by the rotation of the blades, cold air is taken in when the temperature is low such as in the winter, and the temperature of the mixture is increased. There was a problem that the ability of decomposing food waste was lowered. The present invention has been made in view of the above points, and it is possible to prevent the decomposition ability of food waste from decreasing due to lack of air, and further to prevent the decomposition ability of food waste from decreasing even when the temperature is low. It is an object of the present invention to provide a food waste processing device capable of processing.

[0006]

A raw garbage treating apparatus according to the present invention comprises a stirring device 3 formed by providing a rotary shaft 1 with blades 2 and a treating material 5 for decomposing raw garbage 4 in a tank. In a food waste processing apparatus, which comprises a processing tank 6 formed by filling, the food waste 4 and the processing material 5 are agitated by the rotation of the blades 2 accompanying the rotation of the rotating shaft 1. 1 is hollowed along the longitudinal direction to form an air passage portion 7 through which air can pass, and an air jet port 8 communicating with the air passage portion 7 is opened on the peripheral surface of the rotating shaft 1 to form an air passage portion 7. It is characterized by comprising an air delivery means 9 for sending air to.

Further, in the present invention, the heater 10 can be provided in the air passage portion 7 of the rotary shaft 1.

[0008]

The inside of the rotary shaft 1 is made hollow along the longitudinal direction to form the air passage portion 7 through which air can pass.
An air outlet 8 communicating with the air passage portion 7 on the peripheral surface of
Since the air delivery means 9 for sending air to the air passage portion 7 is provided, the air sent out from the air delivery means 9 is sent to the air passage portion 7 of the rotary shaft 1, and the air in the air passage portion 7 is jetted into the air. Air can be forcibly supplied to the mixture of the food waste 4 and the processing material 5 by being ejected from the outlet 8.

Since the heater 10 is provided in the air passage portion 7 of the rotating shaft 1, the air passing through the air passage portion 7 can be warmed by the heater 9.

[0010]

EXAMPLES The present invention will be described in detail below with reference to examples. Figure 1
In (a), a stirring device 3 formed of a rotating shaft 1 and blades 2
A magnified view of a portion of is shown. The rotating shaft 1 is formed in a hollow cylindrical shape with one end closed, and a plurality of blades 2 are provided on the peripheral surface thereof. The blade 2 has a substantially semicircular cross section, is gradually thinned from the base portion to the tip, and is formed in an arc shape in the same direction as the rotation direction when viewed from the side. The hollow portion inside the rotary shaft 1 is formed as an air passage portion 7 over substantially the entire length of the rotary shaft 1. Further, a large number of air ejection ports 8 communicating with the air passage portion 7 are opened on the peripheral surface of the rotary shaft 1.

FIG. 1 (b) shows a sectional view of the food waste processing apparatus, and 6 is a processing tank having a hollow interior whose upper surface is opened as a charging port 11. The inside of the treatment tank 6 is filled with a treatment material 5 in which microorganisms such as aerobic bacteria that decompose food waste are parasitic, and the treatment material 5 may be, for example, wood chips. Further, the stirring device 3 is provided in the processing tank 6. The stirrer 3 is erected in the processing tank 6 by rotatably mounting the respective end portions of the rotary shaft 1 on opposite wall surfaces of the processing tank 6 and supporting them by bearings 31. The drive generated by the drive means 12 housed in the hollow of the processing tank 6 is transmitted to the closed end of the rotary shaft 1 via the transmission means 13. A motor 36, for example, can be used as the driving means 12, and the rotating shaft 1 or the rotating shaft 32 of the motor 36 can be used as the transmitting means 13.
The chain 34 that connects the sprockets 33 and the both sprockets 33 can be exemplified. A pipe 14 is connected to the open end of the rotary shaft 1 through a coupling 35, and the pipe 14 and the air passage portion 7 are in communication with each other. The other end of the pipe 14 is connected to the air delivery means 9. Any means can be used as the air delivery means 9 as long as it can send air to the air passage portion 7 of the rotating shaft 1. For example, a compressor or a pump that sends air under pressure can be used. Also, a means for warming the air may be provided in the air delivery means 9 to send out warm air.

Next, the operation of this food waste processing apparatus will be described. First, from the input port 11 into the processing tank 6
Throw in. Next, the driving means 12 is driven to drive the stirring device 3
The rotary shaft 1 is rotated, and the blade 2 is rotated accordingly. By rotating the blade 2 in this manner, the blade 2
The raw garbage 4 and the processing material 5 are mixed by stirring by the stirring action of. At the same time, air is supplied into the processing tank 6. This air is sent from the air delivery device 9, and the pipe 1
The air sent to the rotary shaft 1 through the coupling 35 through the air passage 4 passes through the air passage portion 7 and is ejected from the air ejection port 8 to remove the food waste 4 and the treatment material 5 in the treatment tank 6. The mixture is forcibly supplied. In this way, if the stirring is continued for a certain period of time, the food waste 4 is decomposed by the microorganisms parasitic on the processing material 5.

As described above, the air passage portion 7 through which the air can pass is formed on the rotary shaft 1, and the air jet port 8 communicating with the air passage portion 7 is opened on the peripheral surface of the rotary shaft 1 to form the air passage portion 7. Since the air delivery means 9 for sending air to the above is provided, the air delivered from the air delivery means 9 can be ejected from the air ejection port 8 through the air passage portion 7, and the garbage 4 and the processing material 5 can be ejected. Air can be forced into the mixture. When this air comes into contact with the microorganisms parasitic on the treatment material 5, the activity of the microorganisms becomes active and the decomposition treatment capacity is improved. Further, by supplying air into the tank of the processing tank 6, it is possible to remove the water contained in the food waste 4 and the water generated in the decomposition process, and to prevent the decrease in the activity of microorganisms due to excessive water content. Activities become active and the decomposition processing capacity improves. Further, if a means for warming the air is provided in the air delivery means 9 so that warm air is supplied to the inside of the treatment tank 6, the removal of the water is promoted, the activity of microorganisms becomes active, and the decomposition treatment capacity is improved. To do.

FIG. 2 shows another embodiment, in which the stirring device 3 is equipped with a heater 10. The heater 10 has a cylindrical shape and is disposed partially or substantially over the entire length in the air passage portion 7 of the rotating shaft 1. It is possible to use an electric type heater that generates heat by supplying power with the cord 15. Yes (the code 15 is not shown in FIG. 1). A contact protrusion 16 is partially formed on the outer peripheral surface of the heater 10 in the circumferential direction, and the contact protrusion 16 is in contact with the peripheral surface of the air passage portion 7, so that the outer periphery of the heater 10 is rotated by the rotary shaft 1. Are driven to rotate. The air sent from the air delivery means 9 to the rotary shaft 1 passes through the gap 17 formed between the peripheral surface of the air passage portion 7 and the outer peripheral surface of the heater 10.

In this embodiment, since the heater 10 is provided in the air passage portion 7, the air passing through the air passage portion 7 can be warmed by the heater 9, and warm air can be supplied into the treatment tank 6. As a result, the activity of microorganisms becomes active and the decomposition processing capacity is improved. Especially when it is cold such as in winter, it is possible to easily create a temperature condition in which the activity of microorganisms becomes active. In addition, the water in the garbage 4 is heated by the heater 10
It is possible to evaporate the food waste 4 and the treatment material 5 by stirring, and it is possible to prevent the deterioration of the activity of the microorganisms due to excess water and to improve the decomposition treatment ability.

FIG. 3 shows another embodiment. This food waste processing device is provided with a lid 18 at the inlet 11. The lid 18 has a substantially L-shaped cross section, and one piece is formed as an outer lid portion 18a and the other piece is formed as an inner lid portion 18b. An end portion of the outer lid portion 18a is slightly bent on the side opposite to the inner lid portion 18b, and a handle portion 19 is formed.
It is formed as. A locking portion 20 projecting into the charging port 11 is provided at the edge of the charging port 11 of the processing tank 6, and the upper surface of the locking portion 20 is formed as an inclined surface 21. Then, the joint portion of the outer lid portion 18a and the inner lid portion 18b of the lid 18 is pivotally attached to the edge portion of the input port 11 facing the locking portion 20 by the pivot shaft 30 so that the lid 18 can be rotated on the processing tank 6. It is attached.

In this food waste processing apparatus, the input port 11 can be covered with a lid, as shown in FIG. 3 (a).
Normally, the lid 18 is pivoted upward as shown in FIG.
8a is set up and the upper end portion of the inner lid portion 18b is locked to the lower surface of the locking portion 20, so that the insertion port 11 is closed.
Cover with 8b. And when throwing in the food waste 4, as shown in FIG. 3 (c), the food waste 4 is placed on the upper surface of the inner lid portion 18b, and then the lid 18 is rotated downward to move the raw food waste on the upper surface of the inner lid portion 18b. The dust 4 is slid into the tank of the processing tank 6, and the handle portion 19 of the outer lid portion 18a is brought into contact with the inclined surface 21 of the locking portion 20 so that the inlet 11 is covered with the outer lid as shown in FIG. 3 (b). The portion 18a is covered. Then, when the processing is completed, the lid 18 is rotated upward to return the lid 18 to the state shown in FIG.

With such a food waste treating apparatus, when the food waste 4 is put into the tank of the processing tank 6 through the charging port 11,
It is safe because the hands do not accidentally enter the processing tank 6 and the hands do not touch the stirring device 3. Figure 4
Another embodiment is shown in FIG. The lid 18 attached to this food waste processing apparatus has a lower surface of the inner lid portion 18b formed by a water receiving tray 22 and an upper surface of the inner lid portion 18b formed by a mesh drainer 23. And the inner lid 1
Water receiving tray 2 with the inlet 11 covered with 8b
2 is provided in the treatment tank 6 for communicating the space between the drainage tool 23 and the outer surface of the treatment tank 6 with the drainage hole 24.
A food waste treatment device is formed by providing the drainage receiver 25 at the lower edge of the opening on the outer surface of the treatment tank 6.
Instead of providing the drainage receiver 25, a hose for draining water may be connected to the opening of the drainage port 24.

In this food waste disposal device, when the food waste 4 is placed on the water draining tool 23 on the upper surface of the inner lid 18b, the water contained in the food waste 4 passes through the water draining tool 23 and drops into the water receiving tray 22. The water is discharged from the receiving tray 22 through the drainage port 24 to the drainage receiver 25 outside the processing tank 6, and the water content of the raw garbage 4 can be removed before being put into the processing tank 6.

[0020]

As described above, according to the present invention, the inside of the rotating shaft is made hollow along the longitudinal direction to form an air passage portion through which air can pass, and the air communicating with the air passage portion is formed on the peripheral surface of the rotating shaft. Since the jet outlet is opened and the air delivery means for sending air to the air passage portion is provided, the air delivered from the air delivery means is sent to the air passage portion of the rotating shaft, and the air in the air passage portion is ejected to the air ejection port. Air can be forcibly supplied to the mixture of food waste and the processing material by being jetted from, and it is possible to prevent the decomposition ability of food waste from decreasing due to insufficient air. In addition, the jetting of air accelerates the drying of the water contained in the garbage and the water generated by the decomposition, which makes the conditions in which microorganisms easily act and improves the garbage disposal capacity. When the microorganisms are decomposed under aerobic conditions in this manner, the odor of food waste, which is likely to occur during the decomposition treatment, is eliminated.

Further, since the heater is provided in the air passage portion, the air passing through the air passage portion can be warmed by the heater, and the decomposition ability of the food waste can be prevented from deteriorating even when the temperature is low. is there. Further, the jetting of the warm air greatly accelerates the drying of the water contained in the garbage and the water generated by the decomposition, which makes the conditions in which the microorganisms easily act and improves the garbage disposal capacity.

[Brief description of drawings]

FIG. 1A is a perspective view of a part of a stirring device and FIG. 1B is a sectional view showing an embodiment of the present invention.

FIG. 2 is a partial cross-sectional side view showing a part of another stirring device of the above.

FIG. 3 (a), (b), showing another embodiment of the above.
(C) is a sectional view.

FIG. 4 is a sectional view showing still another embodiment of the above.

[Explanation of symbols]

 1 Rotating Shaft 2 Blades 3 Stirrer 4 Raw Garbage 5 Processing Material 6 Processing Tank 7 Air Passage 8 Air Jet 9 Air Delivery Means 10 Heater

Claims (2)

[Claims] 1. An agitator formed by providing a rotary shaft with blades, and a processing tank formed by filling a processing material for decomposing food waste into the tank, the rotary shaft being rotated. In a food waste processing device in which food waste and a processing material are formed so as to be agitated by rotation of a blade, the inside of a rotating shaft is made hollow along the longitudinal direction to form an air passage portion through which air can pass, An apparatus for treating food waste, characterized by comprising an air delivery means for opening an air ejection port communicating with an air passage portion on a peripheral surface of the shaft and sending air to the air passage portion. 2. The food waste processing device according to claim 1, wherein a heater is provided in the air passage portion of the rotating shaft.