JPH0596270A - Machine for treating garbage from kitchen - Google Patents

Abstract

PURPOSE:To provide a machine for treating garbage from the kitchen which is composed simply and easy in handling. CONSTITUTION:A machine for treating garbage from the kitchen is equipped with a crushing chamber 1 containing a crusher 2 having a hammer cutter to crush the garbage from the kitchen, a blower 5 to supply air to the crushing chamber 1, a heater 4 to heat air supplied from the blower 5, and a controller which controls the process so that the garbage crushed in the crushing chamber 1 is dried by the heater 4 and the crusher 2 under stirring and, after the completion of drying, is transported outside the crushing chamber 1 by the drive of the crusher 2 and air from the blower 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a kitchen waste processing machine used for general households and businesses, for processing kitchen garbage, that is, kitchen waste.

[0002]

2. Description of the Related Art Conventionally, kitchen waste generated in a kitchen is treated by using a disperser, which is crushed and sent to the sewage as it is, a garbage dewatering machine which is crushed and dehydrated, and a heating means such as a microwave and a heater. We use a garbage disposal machine that completely incinerates or dries the garbage and collects it.

[0003]

These conventional devices have the following problems. The disposer has a significantly high BOD of the treated wastewater, which imposes a burden on the sewage treatment plant. Given that the sewerage penetration rate is low in Japan, it cannot be said to be an appropriate treatment method.

[0004] Since the garbage dewatering machine does not process the recovered crushed kitchen waste, it is apt to putrefaction, which may cause a bad odor or cause harmful insects or pathogenic bacteria.

Although the garbage disposal using the heating means solves these problems, it has the following problems. First, when the gas generated from the garbage is deodorized by means such as oxidative decomposition during the heat treatment of the garbage, a very large amount of heat is required for this treatment under high humidity.
Further, in order to perform this treatment, the equipment must have a structure capable of withstanding high temperatures, and extremely high durability is required. In addition, if the processing residue, that is, the incineration ash or the dry garbage is not taken out each time the treatment is carried out, the kitchen waste will partly stick and stick to the inner wall, resulting in poor thermal efficiency.

SUMMARY OF THE INVENTION The present invention is intended to solve the problems of the conventional structure as described above, and it is a first object of the present invention to provide a garbage processing machine having a simple structure and easy to handle. There is. A second object is to provide a kitchen garbage processor with a high deodorizing effect. A third object is to provide a garbage disposal that has high thermal efficiency and low running cost.

[0007]

The first means of the present invention for achieving the first object is a crushing chamber having a crushing means for crushing garbage, and a blowing means for blowing air to the crushing chamber. A heating means for heating the air blown by the blower means, and the kitchen waste crushed in the crushing chamber is dried while being agitated by the heating means and the crushing means, and after the completion of drying, driving of the crushing means and the The garbage disposal includes a control device for controlling the garbage to be conveyed to the outside of the crushing chamber by the air blown by the air blower.

A second means of the present invention for achieving the second object is, in addition to the constitution of the first means of the present invention,
The kitchen waste processing machine is provided with a cooling means for cooling the steam generated during the drying of the kitchen waste and a deodorizing means for removing the odor generated during the drying of the kitchen waste.

The third means of the present invention for attaining the third object is, in addition to the configuration of the second means of the present invention, the kitchen waste in which the heat generated by the deodorizing means is reused for drying the kitchen waste. It is a processing machine.

[0010]

According to the first means of the present invention, the crushed kitchen waste is uniformly dried without carbonization, and after the completion of the drying, the driving force of the crushing means and the blowing means are provided without providing new conveying means. It will be transported to the outside of the crushing chamber by the air blown from. Also, the drying temperature is lower than that of conventional incineration, and the heat resistance of the equipment is not at a level that poses a problem.

According to the second means of the present invention, the gas containing vapor and odor generated during the drying of the kitchen waste can be cooled to condense and remove moisture and odor, and the gas is generated from the equipment. The odorous components can be considerably suppressed, and the water that interferes with the oxidative decomposition of the odorous components can be removed, so that the subsequent deodorization can be performed at a low temperature.

Further, according to the third means of the present invention, since the heat generated by the deodorizing means is reused for heating the blown air, it is possible to obtain a device having high thermal efficiency.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In the figure, reference numeral 1 is a crushing chamber, which is provided with crushing means 2 composed of a hammer cutter or the like at the bottom. The crushing means 2 is rotationally driven by a motor 3. Reference numeral 4 is a heating means constituted by a heater, which heats the air blown by the blowing means 5 constituted by a sirocco fan or the like. Reference numeral 6 denotes a cooling means for cooling the gas generated by the garbage in the crushing chamber 1 during drying to condense and remove water and odor in the gas, and is connected to the crushing chamber 1 via the path 13. The water condensed by the cooling means 6 flows down through the drain hose 12. Reference numeral 7 is a deodorizing means for deodorizing the gas sent from the cooling means 6 through the path 14, part of which is opened to the outside of the equipment through the path 15 and
A part of is a path 17 that is integrated with the air blowing path 16 and communicates with the crushing chamber 1. The deodorizing means 7 is composed of a honeycomb-shaped catalyst 10 and a catalyst heating heater 11.
Since the heating means 4 and the deodorizing means 7 can be ventilated, the heat generated from the deodorizing means 7 is sent to the heating means 4 side for reuse. Reference numeral 8 denotes a dry kitchen waste container provided outside the device, which is connected to a path 18 in the tangential direction of the crushing chamber 1 and a part of which is opened to the outside of the apparatus through a path 19. 9 dries the garbage that is crushed in the crushing chamber 1 with stirring by the heating means 4 and the crushing means 2, and after the drying is completed, the kitchen waste is dried by driving the crushing means 2 and blowing air from the blowing means 5. It is a control device that controls to convey to the garbage receiving container 8.

The operation of this embodiment will be described below. When the user throws the garbage into the crushing chamber 1 and turns on a switch (not shown), the control device 9 operates to rotate the motor 3 to drive the crushing means 2 to execute the crushing process. In this case, it is desirable that the rotation speed of the motor 3 be 1000 to 2000 r / min.
In the case of g), the grinding is completed in 20 to 60 seconds. However, in order to prevent the crushing means 2 from being locked and stuck even if a large amount of garbage is thrown in, it is desirable to use a motor having a large starting torque. In this embodiment, a starting torque of about 3 J is used.

When the crushing step is completed in this way, the heating and drying step is started. The blower means 5 and the heating means 4 provided on the downstream side of the blower means 5 are energized, and the air taken in from the outside as indicated by arrow a is blown by the blower means 5 as indicated by arrow b. The blown air is heated by the heating means 4 and becomes hot air and is sent into the crushing chamber 1 as indicated by arrow c. It is desirable that the hot air temperature at this time be about 200 ° C. or lower. In other words, the higher the temperature, the shorter the drying time, but conversely, the garbage becomes more likely to be carbonized, and if carbonized, charring odor or smoke is generated and deodorization becomes difficult.

In this case, it is effective that the crushing means 2 in the crushing chamber 1 is continuously operated during this drying process. That is, when the crushed kitchen waste in a stationary state is dried with hot air, only the surface of the kitchen waste is dried and a film is formed, resulting in extremely low thermal efficiency. In order to prevent this, it is effective to operate the crushing means 2 continuously to keep the garbage in a fluid state at all times. At this time, the stirring speed by the crushing means 2 does not have to be as high as the crushing speed at the time of crushing, and it is desirable to stir at about 200 r / min rotation. When heated and dried in this manner, about 1 kg of kitchen waste (a standard amount of kitchen waste generated per day in a family of four) varies depending on the type of kitchen, but it takes 120 to 180 minutes to dry. It

When the garbage is dried as described above, volatile odorous components are generated. Most preferably, this odor component is deodorized by a catalytic oxidation method. Generally, the temperature of the catalyst 10 has to be raised to a considerably high temperature for this catalytic oxidation. Therefore, in this embodiment, the water vapor contained in the gas is removed before the deodorization. That is, as shown by the arrow d, the gas in the crushing chamber 1 is cooled by the cooling means 6. The cooling means 6 is composed of, for example, a fan and a fin tube, and cools the hot gas to condense and remove water and odor. At this time, condensed water is generated in an amount of 500 to 700 cm ³ per 1 kg of garbage, and flows down from the drain hose 12.

If the cooling system is water-cooled instead of air-cooled, the water piping system is mechanically complicated, but the condensed water generated when condensed is discharged together with the cooling water drainage for cooling. It is easy to use because it can be drained. The gas from which the moisture and odor components have been removed in this way is sent to the deodorizing means 7 as indicated by arrow e in order to purify the remaining odor components. In this case, since the moisture is removed from the odorous gas as described above, the same purification rate can be achieved at a temperature lower by 120 to 150 ° C. than when the moisture is not removed. Odor gas is oxidized on the catalyst surface and decomposed into odorless CO ₂ and H ₂ O. For example, a catalyst in which a platinum group metal is supported on activated alumina is effective as the catalyst, but the type of the catalyst is not particularly limited in this embodiment. In this case, the catalyst temperature is suitably 300 ° C to 350 ° C, the SV value (catalyst space velocity) is 20000 h ^-1 , and THC (total hydrocarbons in the gas; an index that approximately represents the concentration of odorous components) The purification rate could be 97% or more.
The gas purified by the deodorizing means 7 is exhausted to the outside as shown by an arrow f. This exhaust gas is almost odorless, has a relatively low humidity, and can be exhausted indoors with almost no problem.

A large amount of heat is generated in this deodorizing process. In this embodiment, as shown by the arrow g, part of the exhaust gas is sent to the heating means 4 side to reuse the heat. Therefore, the present embodiment realizes a highly efficient device that can reuse waste heat. The method of reusing this waste heat is not particularly limited in this embodiment. For example, other means such as a means for designing the deodorizing means 7 and the heating means 4 in close contact with each other and utilizing heat radiation from the deodorizing means 7 are also conceivable.

When the drying of the kitchen waste is completed in this way, a drying kitchen transporting step is started. When the drying is completed, the control device 9
Acts to stop energizing the heater 11 of the heating means 4 and the deodorizing means 7, simultaneously closes the path 13 and opens the paths 18 and 19 indicated by arrows h and i. At this time, it is desirable to increase the number of rotations of the fan of the blowing unit 5 and the crushing unit 2.
In this case, the rotation direction of the crushing means 2 is indicated by the arrow j in FIG.
It is as shown in. By the air blown from the air blowing means 5 and the rotation of the crushing means 2, the lightened dry garbage goes up while rotating, and passes through the path 18 indicated by an arrow h into the dry garbage receiving container 8 provided outside the crushing chamber 1. Is transported. In this way, in 60 to 100 seconds, this dry kitchen waste transportation process is completed.

The dry garbage that has been conveyed to the dry garbage receiving container 8 in this way falls to the bottom of the dry garbage receiving container 8 due to its own weight, and the wind goes out of the device from the path 19 as indicated by the arrow i. At this time, if the dry food waste container 8 has a cyclone structure, it can be said that the dry food waste is more effective means without the dry food waste flying out.

After processing, the path 19 indicated by the arrow i is closed,
Do not let the odor generated from the dry kitchen waste go out. Since this dried kitchen waste is sterilized and the water content is close to 0 and does not rot, it can be stored forever. It is not necessary to throw it away until the dry garbage receiving container 8 is filled with the dry garbage, which is very convenient.

[0023]

As described above, according to the first means of the present invention, the crushing chamber having the crushing means for crushing the garbage, the blowing means for blowing the air into the crushing chamber, and the air blown by the blowing means are provided. Heating means for heating, and the kitchen waste crushed in the crushing chamber is dried while being stirred by the heating means and crushing means,
After the completion of drying, it has a control device that controls the driving of the crushing means and the ventilation of the blowing means to convey the kitchen waste to the outside of the crushing chamber, and realizes an easy-to-handle device with a simple configuration. is there.

The second means of the present invention is, in addition to the constitution of the first means of the present invention, a cooling means for cooling the steam generated during the drying of the kitchen waste and the odor generated during the drying of the kitchen waste. Since it is equipped with a deodorizing means for reducing the odor component of the generated gas, it is possible to realize an apparatus capable of deodorizing at a low temperature.

According to the third means of the present invention, in addition to the constitution of the second means of the present invention, the heat generated by the deodorizing means is reused for drying the garbage, so that the thermal efficiency is high and the running cost is high. To realize low-cost equipment.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a garbage processing machine according to an embodiment of the present invention.

FIG. 2 is a sectional view showing the configuration of the deodorizing means.

FIG. 3 is a plan cross-sectional view of the garbage processing machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Crushing chamber 2 Crushing means 3 Motor 4 Heating means 5 Blower means 6 Cooling means 7 Deodorizing means 8 Dry kitchen waste container

Claims (3)

[Claims] 1. A crushing chamber having crushing means for crushing garbage, an air blowing means for blowing air to the crushing chamber, a heating means for heating the air blown by the air blowing means, and crushing in the crushing chamber. The garbage is dried while stirring by the heating means and the crushing means, and after the completion of drying, the kitchen has a control device that drives the crushing means and blows air from the blowing means to convey the garbage to the outside of the crushing chamber. Processing machine. 2. The garbage disposal according to claim 1, further comprising: a cooling means for cooling steam generated during the drying of the garbage and a deodorizing means for removing an odor generated during the drying of the garbage. 3. The garbage treating machine according to claim 2, wherein the heat generated by the deodorizing means is reused for drying the garbage.