JP4146611B2 - Heating mixer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a garbage dryer for effectively drying garbage from a market, a restaurant or a general household.
[0002]
[Prior art]
Conventionally, most of the garbage from the market, restaurants, and ordinary households is currently sent to incineration facilities as combustible waste and incinerated, but the amount of emissions has been increasing year by year. This is one of the factors that put pressure on the finances of local governments.
[0003]
In addition, since such garbage is collected at a designated garbage collection site on a designated designated day, especially in the summer, the surrounding environment deteriorates due to its rotting odor, or small animals such as crows and cats are collected before garbage collection. There have been reports of damage such as feeding around the garbage collection area.
[0004]
For this reason, the present inventors have proposed a garbage dryer for dehydrating and drying the garbage in advance on the side of the generator generating the garbage to reduce its volume and weight.
[0005]
As shown in FIG. 3, this kitchen garbage dryer has an air supply line b for supplying high-temperature drying air to a heating mixer a that dries the input garbage with high-temperature drying air while stirring. The exhaust gas line c that exhausts the air after drying is connected to the exhaust gas line c, and the deodorizing furnace d that decomposes and deodorizes the odor components in the exhaust gas with high heat, and the waste heat generated in the deodorizing furnace d has a high temperature. It is equipped with a heat exchanger e that generates drying air, and the volume of garbage is greatly reduced by forcibly drying the garbage, which is mostly moisture, with high-temperature drying air. , Trying to reduce the weight.
[0006]
That is, as shown in the figure, the hot garbage generated in the blower g and the heat exchanger e is heated from the air supply line b while the garbage put into the heating mixer a is stirred by the stirring blade h. When it is fed into the mixing mixer a, the garbage in the heating mixer a is forcibly heated and dried by the high-temperature drying air, so that the volume and volume of the garbage are greatly reduced. On the other hand, the drying air in the heating mixer a flows into the exhaust gas line c by heating and drying the garbage to the exhaust gas line c, and the odor component is decomposed by burning again at a high temperature in the deodorizing furnace d. After being deodorized and detoxified, the heat is recovered by the heat exchanger e and then released into the atmosphere.
[0007]
When the garbage is sufficiently dried in this manner, the air supply line b bypasses the heat exchanger e and sends low-temperature (room temperature) cooling air into the heating mixer a. The dried waste is sufficiently cooled and taken out, and then the dried waste is collected by bagging or the like and effectively used as fertilizer or livestock feed.
[0008]
[Problems to be solved by the invention]
By the way, in the conventional heating mixer a for forcibly stirring and drying the garbage in this way, the air inlet of the air supply line b is connected to the top of the casing together with the exhaust port. When the amount of garbage to be produced is small, the air bypasses the upper space of the stirring blade h and flows out to the exhaust gas line c, so that the garbage cannot be effectively dried and cooled. It was.
[0009]
For this reason, it is conceivable that the upper space is made as narrow as possible to prevent air bypass. However, when the supplied air is exhausted, the air and the garbage (dry waste) can be reliably separated. Or it is indispensable for reasons such as efficiently putting garbage, and a certain amount of space must be maintained.
[0010]
Therefore, the present invention has been devised in order to effectively solve such problems, and an object of the present invention is to provide novel heating capable of effectively flowing dry air and cooling air to garbage. A mixer is provided.
[0011]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention provides a substantially rectangular casing having a semi-cylindrical bottom portion, and supports a rotating shaft substantially coaxially with the bottom portion, and a plurality of surroundings around the rotating shaft. provided radially over the stirring blade in the longitudinal direction, it is provided with two baffle plates in the axial direction in the casing partitioned formed into three spaces the upper space in the casing, raw in the center of the three spaces In addition to providing an input port for charging waste, a discharge port for discharging treated waste is provided at the bottom of the central part, and a pair of air inlets that can be opened and closed at the bottom of the space on both sides of the central part. A pair of exhaust gas outlets that can be opened and closed at the top of the space on both sides of the central part, open only one of the pair of air inlets, close the other, and close the exhaust gas outlet located in the open air inlet space, Opened, opened Drying air or cooling air supplied from the air inlet, in which to flow from one side of the space into the space on the opposite side through the space of the central portion.
[0012]
That is, by providing an air inlet at the bottom of the casing, it becomes possible to reliably blow drying air or cooling air against garbage collected at the bottom of the casing even when the stirring blade is stationary and in an unstirred state. The garbage can be effectively dried and cooled. Further, by providing a baffle plate in the upper space in the casing, air bypass from the upper space to the exhaust gas outlet can be prevented and the waste can be effectively flowed to the garbage. A cooling process can be performed.
[0014]
Further, the pair of air inlets and the pair of exhaust gas outlets are appropriately opened and closed, and the drying air or the cooling air is divided into three spaces formed on one side of the upper space from the space on the opposite side to the space on the opposite side, or If it is made to flow alternately in the opposite direction, drying and cooling can be performed uniformly and drying and cooling unevenness can be eliminated, and favorable drying and cooling processing can be performed.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Next, a preferred embodiment for carrying out the present invention will be described with reference to the accompanying drawings.
[0016]
1 and 2 show an embodiment of a heating mixer according to the present invention.
[0017]
As shown in the figure, the heating mixer includes a stirring mechanism 2 in a substantially rectangular casing 1 having a semicylindrical bottom, and supplies high-temperature drying air and cooling air to the casing 1. An air inlet 3 and an exhaust port 4 for exhausting supplied air are formed.
[0018]
This stirring mechanism 2 is provided with a plurality of stirring blades 6, 6... Radially around the rotary shaft 5 coaxially positioned with the inner bottom of the semicylindrical casing 1. The end portion of the rotating shaft 5 is rotationally driven by the motor 7 so that the garbage put into the casing 1 is stirred up by stirring upward in the casing 1.
[0019]
Further, the stirring blade 6 is integrally provided with a stirring piece 8 inclined at the tip and in the longitudinal direction of the rotating shaft 5 at its tip, so that the garbage at the bottom of the casing is scraped up in an oblique direction in the rotational direction. It has become. That is, by providing the stirring piece 8 inclined obliquely in this way, not only the garbage is scraped up and stirred in the rotation direction, but also the action of gradually transporting the garbage in one direction at the same time as the stirring. It comes to show.
[0020]
On the other hand, one air inlet 3 is provided at each end of the bottom of the semicylindrical casing 1, and the high-temperature drying air and cooling air sent from the air supply line b as described above are provided. The casing 1 is supplied from the bottom corner of the casing 1.
[0021]
On the other hand, the exhaust ports 4 are respectively provided at both ends of the top of the box-shaped casing 1 so that the air supplied from the air inlet 3 into the casing 1 is exhausted from the top corner of the casing 1 as described above. Exhaust to line c.
[0022]
An upper space Z for separating garbage and exhaust gas is formed on the stirring mechanism 2 in the casing 1, and a pair of baffle plates 9, 9 are provided in the upper space Z. The upper space Z is partitioned into three spaces (Z1, Z2, Z3) in the longitudinal direction of the rotating shaft 5.
[0023]
Further, the casing 1 is provided with an inlet 10 for feeding garbage and an outlet 11 for discharging dried waste after the treatment, and the garbage is introduced from the upper space Z2 to the stirring mechanism 2 side. At the same time, dry waste can be taken out from the bottom. In addition, opening / closing lids 12 and 13 are provided at the charging port 10 and the discharging port 11, respectively, and the charging port 10 and the discharging port 11 are closed during operation to seal the inside of the casing 1.
[0024]
In the figure, H is a heat insulating material for preventing heat dissipation from the casing 1, and 14, 14,... Are support legs for supporting the casing 1 on a concrete block or a stand.
[0025]
And in the heating mixer of the present invention having such a structure, while stirring the garbage put in the casing 1 by the stirring mechanism 2, only one of the air inlet 3 and the exhaust port 4 is opened and closed. For example, the air inlet 3b is opened and the exhaust port 4b in the vicinity thereof is closed. Then, the high-temperature (about 200 ° C.) drying air that has flowed in from the air inlet 3b first directly touches the garbage that is being stirred in the vicinity immediately after inflow, heats and dries it, and then the upper space directly above it. Although it is going to flow to the Z1 side, since the exhaust port 4b on the upper space Z1 side is in a closed state, it cannot be discharged from the exhaust port 4b side, and the upper space Z1 has a baffle plate. Since it is partitioned by 9, it is not possible to bypass the upper space Z and flow directly to the other exhaust port 4a side.
[0026]
Therefore, the drying air that has flowed in from the air inlet 3b flows along the rotating shaft 5 in the stirring mechanism 2 in which the garbage is stirred as it is, passes through the upper space Z3, and is exhausted from the exhaust port 4a. Will flow like this. In addition, when the cooling air after the drying process is introduced from the air inlet 3b, the air flow is exactly the same as this.
[0027]
Therefore, in the heating mixer of the present invention, the drying air and the cooling air always flow through the garbage or the dried garbage in a state of being agitated. ) Can be brought into contact with air reliably and for a long time, and efficient drying and cooling processes can be performed.
[0028]
On the other hand, if the drying air that has flowed in by drying the garbage in this way is always flowed from only one direction, the garbage is shifted to the upstream side, and a uniform drying process cannot be performed. Therefore, after a certain period of time has elapsed, switching between the open and closed states of the air inlet 3 and the exhaust port 4 and switching the air in the opposite direction, that is, from the air inlet 3a to the exhaust port 4b, eliminates uneven heating (cooling). A uniform and more efficient drying and cooling process can be achieved.
[0029]
When the drying / cooling process is completed in this manner, the dried waste can be easily taken out and collected by opening the discharge port 11 at the bottom of the casing 1.
[0030]
As described above, the present invention includes the air inlet 3 at the bottom of the casing 1 and partitions the upper space Z by the baffle plates 9 and 9 so that the drying air and the cooling air can flow effectively. This makes it possible to efficiently dry and cool garbage.
[0032]
【The invention's effect】
In short, according to the present invention, it is possible to flow the drying air and the cooling air effectively, and it is possible to efficiently carry out the drying / cooling treatment of garbage. As a result, the processing efficiency is improved and the processing cost can be significantly reduced.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an embodiment of a heating mixer according to the present invention.
FIG. 2 is a cross-sectional view taken along line AA in FIG.
FIG. 3 is a block diagram showing a garbage dryer provided with a conventional heating mixer.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Casing 2 Agitation mechanism 3 Air inlet 4 Exhaust outlet 5 Rotating shaft 6 Agitation blade 9 Baffle plate Z Upper space

Claims (1)

In a substantially rectangular casing with a semi-cylindrical bottom, the rotating shaft is supported on the same axis as the bottom, and a plurality of stirring blades are radially provided around the rotating shaft in the longitudinal direction. Provided,
Provided two baffle plates in the axial direction in the casing partitioned formed into three spaces the upper space in the casing, the food waste is provided with the inlet for introducing the central portion of the three spaces, the central Provided with a discharge port for discharging treated waste at the bottom of the unit, and on the other hand, a pair of openable and closable air inlets at the bottom of the space on both sides of the central part and a pair of openable and closable at the top of the space on both sides of the central part. The exhaust gas outlet of
Only one of the pair of air inlets is opened, the other is closed, the exhaust gas outlet located in the open air inlet space is closed, the other is opened, and drying air or cooling air supplied from the opened air inlet is The heating mixer is characterized in that it flows from the space on one side to the space on the opposite side through the space on the central part .

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