JPH04219188A - Waste treating equipment - Google Patents

Abstract

PURPOSE:To obtain a waste treatment equipment in which waste such as crude refuse is made lightweight and treated and offensive odor is not generated. CONSTITUTION:Waste is housed in a paper bag 7 provided to the inside of an internal vessel 5. This waste is heated by microwave irradiated from a microwave oscillator 11 and made lightweight. Moreover since the pressurized air sent from a fan 12 flows to an air outlet 15 while cooling the external wall of the internal vessel 5, offensive odor generated from the waste does not flow in the direction of the cover of the treatment equipment.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention is a relatively small, simple, and hygienic waste disposal method for kitchen waste and other so-called food waste that contain a relatively large amount of moisture, generated in kitchens, etc. This relates to material processing equipment.

0002

BACKGROUND OF THE INVENTION A typical type of waste is garbage discharged from households every day. The majority of kitchen waste is kitchen waste generated from around the kitchen. Regarding the treatment of these wastes, a common method is to have a collection vehicle go to a predetermined time and place to collect the waste, and centrally process the waste at a processing facility such as an incinerator. Therefore, in households, it is necessary to store kitchen waste until a predetermined time for collection, and it is also necessary to transport it to a predetermined place for collection. In order to eliminate these inconveniences, several devices and methods have been proposed for disposing of kitchen waste at (near) the place where it is generated. A typical example is a disposer, which uses mechanical force to break down kitchen waste into fine particles and flush it into the sewer with water.However, in Japan, there is a lack of sewage treatment equipment capacity. Its use is often prohibited at the local government level (to avoid contaminating rivers with organic matter). Other methods include a heating (partial combustion) method using a heater or the like, a freezing method to prevent odor, and a microwave heating method. However, in reality, each method has a number of problems, and there are still very few practical waste treatment devices.

0003

[Problem to be solved by the invention] Conventionally, regarding kitchen waste,
They need to be stored until a certain time before they can be collected, but because they contain a lot of moisture, they themselves create an environment that is conducive to spoilage. Therefore, the first major problem is that kitchen waste decomposes during storage and generates a bad odor. In addition, kitchen waste contains a lot of water, which increases its weight, and the second major problem is the heavy labor involved in transporting the bags filled with it to a predetermined place where it is collected. Additionally, moisture leaked from the bags containing kitchen waste during transportation, leaving new traces (
It is often the cause of secondary (secondary) odors, and there have been urgent hopes for a solution to this problem, especially in apartment complexes. On the other hand, when looking at conventional kitchen waste processing equipment, although the disposer is capable of finely pulverizing kitchen waste, the wastewater after treatment contains a large amount of solids and organic components. Furthermore, it has no effect on spoilage that occurs during storage after crushing. Incineration methods still have problems such as odor generation during incineration and ash disposal. Refrigeration methods do not reduce the weight of kitchen waste, and microwave heating methods require proposals for specific measures to reduce odor generation. Kitchen waste processing equipment, or waste processing equipment in a broader sense, as a means of adapting to these problems is still in a state of being virtually non-existent at a practical level, and the early realization of such equipment has been a challenge.

SUMMARY OF THE INVENTION An object of the present invention is to provide a waste treatment apparatus which solves the above-mentioned problems, reduces the volume and weight of waste, and has functions for treating moisture and bad odors.

[0005]

[Means for Solving the Problems] In order to achieve the above object, the waste treatment apparatus of the present invention comprises an air chamber made of a main container and a lid made of a microwave shielding material, and a microwave shielding material in the air chamber. An inner container made of a transparent material is arranged, a breathable bag for storing waste is fixed in the inner container through a space, and a microwave oscillator is used to irradiate microwaves into the air chamber. The waste treatment apparatus is constructed by providing an air supply means for supplying air to the air chamber.

[0006]

[Operation] With the above-described structure, the present invention provides an apparatus for simply and hygienically drying kitchen waste and other wastes such as so-called kitchen garbage that contain a relatively large amount of moisture, generated in the kitchen, etc. . In other words, by heating waste containing a lot of water with microwaves, it can be made lighter.
The heat sterilization effect makes it difficult to putrefy, making it easy and sanitary to handle. At this time, since the waste is placed in a bag in advance and subjected to microwave heating treatment, the waste can be easily handled in the bag after the treatment is completed. In addition, the water vapor generated during processing can be efficiently condensed and discharged on the inner wall of the inner container, which is cooled by air. Even if odor is generated, it will not leak around the processing equipment.

[0007]

Embodiments (Embodiment 1) FIG. 1 shows a vertical sectional view of a main part of an embodiment of the present invention. 1 is a main container, and 2 is a lid, each of which is made of a microwave shielding material to prevent microwaves from leaking to the outside. Both form an air chamber 3. 4 is a packing for blocking microwaves and air, and is made of conductive rubber. Main container 1
The inner container 5 is set in the air chamber 3 using a pedestal 21 provided in the pedestal 21. A paper bag 7 for throwing waste into the inner container 5 is fixed via a space 20 by sandwiching the slot portion between the stopper 8 and the stop ring 9. Here, a breathable paper bag 7 is used, but there is no need to be particular about paper. For example, it may be a resin bag with small holes for discharging water vapor, or a bag without small holes may be suspended in the inner container 5 with a gap at the top. The important point is to provide ventilation between the inside of the bag 7 and the space 20 to discharge water vapor.

[0008] 6 is an inner lid. The structures inside the air chamber include the paper bag 7, the inner container 5, the stopper 8, the stop ring 9,
Both the inner cover 6 and the inner cover 6 are made of microwave transparent material. Here, a material mainly composed of resin is used. However, the inner lid 6 may be connected or integrated with the lid 2, and in that case, it may be made of a microwave shielding material. The inner container 5 and its accompanying parts, such as the stoppers 8, are removable from the main container 1, so they can be removed and cleaned, and by removing them, the inner surface of the main container 1 can be removed. It is also designed for easy cleaning. 10 is air chamber 3 and upper air chamber 3
This is a through hole for communicating with a. Paper bag 7 is being processed 10
Since you will be exposed to a harsh atmosphere where moisture and oil coexist at around 0°C, you will need to develop resistance to that atmosphere (
mechanical strength) is required. To this end, here we use a material with improved water and oil resistance (at high temperatures of around 100°C) made by combining pulp and (heat-resistant) resin to create a breathable paper bag.

Reference numeral 17 denotes a drain port for condensed and separated water provided at the lower part of the inner container 5, and is connected to a drain pipe 19 through a rubber pipe 18. A branched exhaust pipe 23 is provided in the drain pipe 19, and a deodorizer 13 is provided downstream of the exhaust pipe 23 for oxidizing and decomposing malodor components generated during treatment. The deodorizer 13 includes a catalyst 16 and a heater 22. 14 is an exhaust port. Of course, the exhaust port 14 can be extended to exhaust the air to a distant place (for example, to the outdoors when used indoors). A suction fan may be provided downstream of the exhaust port 14 if necessary. Also,
It is also possible to use other methods for deodorizing. Adsorption deodorization method using activated carbon-based, silica-based, alumina-based, zeolite-based, ion exchange resin-based adsorbents, oxidation reaction decomposition method using ozone, bio deodorization method, neutralization using aromatics, etc. It is possible to select one (or more than one) from among masking methods, etc., depending on the usage conditions. A microwave oscillator 11 uses a magnetron to irradiate microwaves into the air chamber 3 to heat the waste in the paper bag 7.

Reference numeral 12 denotes a blower fan employed as an air supply means for supplying air to the upper air chamber 3a and the air chamber 3. Air first enters the upper air chamber 3a and flows through the through hole 10 to the air chamber 3. 15 is an air outlet provided in the main container 1. A deodorizer may be installed downstream of the air outlet 15 if necessary.

Next, the operation will be explained. First, the paper bag 7 is held between the stopper 8 and the stop ring 9 and set in the inner container 5. Next, waste material containing a large amount of moisture such as food waste is put into the paper bag 7, and the inner lid 6 and the lid 2 are closed to complete the preparation. The microwave oscillator 11 and the blower fan 12 are operated to start heating the waste. The waste is heated from within by microwaves, raising its temperature and water begins to evaporate. The generated water vapor passes through the paper bag 7 under its own pressure,
It is discharged into the space 20 formed between the inner container 5 and the inner container 5.

At this time, since the inner container 5 is cooled by the air introduced into the air chamber 3 by the blower fan 12, the water vapor coming out into the space 20 is condensed on the inner surface of the inner container 5, and the drain port 17, It is discharged through drain pipe 19 into a drain (not shown). A space 20 is provided between the paper bag 7 and the inner container 5 to achieve efficient generation and condensation of water vapor. Since the paper bag 7 has both air permeability and water permeability, water separated from the waste during microwave heating drips from the bottom of the paper bag 7 and is also discharged from the drain pipe 19. This dripping water is
Since the paper bag 7 itself acts as a filter paper, impurities and the like are removed when the paper bag 7 passes through the paper bag 7, resulting in a clean product. In addition, various gases, mainly water vapor, generated from waste during processing always pass through the paper bag, so if oil smoke, smoke, droplets, or solid matter are generated from waste during processing, it will not be used. Since the paper bag 7 serves as a filter, it is difficult for the liquid to be released outside the paper bag 7. Therefore, there is very little dirt on the inner surface of the inner container 5 and its surrounding members, resulting in an apparatus that does not easily generate bad odors even when waste is processed many times.

[0013] Furthermore, it also has the function of reducing organic components in waste water. Furthermore, there are many malodorous components that can be detected by humans even on the ppb order, and even if a small amount leaks from a small gap, it will emit a foul odor to the surrounding area. This embodiment is configured to prevent this. In other words, when the malodorous components generated during the treatment operation diffuse, they must first come out into the air chamber 3 because the device has a double structure. However, since the air chamber 3 is pressurized by the air blowing from the blower fan 12, the malodorous components cannot come out into the air chamber 3. Therefore, no bad odor will leak around the device.

Of the gas components generated during the treatment, most of the water vapor condenses on the inner surface of the inner container 5, and flows from the drain pipe 19 to the drain (
(not shown). A small amount of water vapor, malodorous components, and a small amount of air that enters from the upper air chamber 3a due to the pressure difference are introduced into the deodorizer 13 from the exhaust pipe 23, purified there, and exhausted from the exhaust port 14. In this way, the heating treatment of the waste proceeds without causing any harm to the surroundings of the apparatus, and the heating is terminated when the waste has released the moisture contained therein and becomes dry. After cooling, the waste can be taken out and disposed of while still in the paper bag 7. Alternatively, if the paper bag 7 has sufficient capacity, it is also possible to perform the process multiple times with one paper bag.

[0015]

Effects of the Invention As is clear from the above description, the present invention comprises an air chamber composed of a main container made of a microwave shielding material and a lid, and an inner container made of a microwave transparent material in the air chamber. A breathable bag for storing waste is fixed in the inner container through a space, and a microwave oscillator for irradiating microwaves into the air chamber;
By configuring a waste treatment device with an air supply means for supplying air to the air chamber, it is possible to easily remove kitchen waste and other wastes that contain a relatively large amount of water, such as food waste generated in the kitchen, etc. Moreover, the drying process can be carried out in an extremely hygienic manner. Specifically, by heating the waste with microwaves, it is possible to reduce the weight of the waste and sterilize it, making it less likely to rot. Since the waste is placed in a bag for disposal, it can be handled easily and hygienically in the bag. Water vapor generated during processing can be efficiently condensed and discharged on the inner wall surface of the inner container. To supply pressurized air to the air chamber,
This provides great effects such as preventing the bad odor generated during processing from leaking around the processing equipment.

[Brief explanation of the drawing]

[Fig. 1] A sectional view of essential parts of an embodiment according to the present invention.

[Explanation of symbols]

1 Main container 2 Lid 3 Air chamber 5 Inner container 7 Paper bag (breathable bag) 11 Microwave oscillator 12　Blower fan (air supply means) 20 Space

Claims (2)

[Claims] Claim 1: An air chamber is formed by a main container made of a microwave shielding material and a lid, an inner container made of a microwave transparent material is arranged in the air chamber, and waste is stored in the inner container. The air-permeable bag is fixed to the inner container through a space, and includes a microwave oscillator that irradiates microwaves toward the air chamber, and an air supply means that supplies air to the air chamber. Waste treatment equipment. 2. The waste treatment apparatus according to claim 1, wherein the breathable bag for containing the waste is made of a paper material made of a composite of pulp and resin.