JPS593727Y2 - fumigation equipment - Google Patents

Description

[Detailed description of the invention] This invention mixes a fumigation agent with a foaming agent, heats the mixture indirectly to thermally decompose the foaming agent without combustion, and makes the fumigation agent effective by the action of the pyrolysis gas. This invention relates to improvements in fumigation equipment.

Conventionally, as a method for intensively exterminating sanitary pests in a short period of time, there is a so-called smoke extermination method that contains a chemical and a combustion agent, and evaporates the chemical intensively in a short period of time using the combustion heat and smoke of the combustion agent. Although known, it has the following drawbacks.

In other words, in order to instantly evaporate a large amount of chemicals, it is necessary to use a combustion agent that generates highly toxic smoke, and the smoke produced by this combustion agent produces an irritating odor and is dangerous to the human body, as well as the flames caused by the fragments of the combustion agent. This poses problems in terms of safety and convenience in use.

Furthermore, the heat of combustion causes the chemical to decompose, resulting in a decrease in effective volatilization rate, resulting in a decrease in medicinal efficacy and economic loss.

The present invention was made with the aim of eliminating all of the above-mentioned drawbacks of the conventional technology. Namely, the present invention provides a fumigation agent containing a foaming agent in a closed container for containing a pyrogen that generates heat when it comes into contact with water. A container with an open top for accommodating is connected with at least one of the bottom wall and the side wall of the open container as a wall partition, and both the bottom wall and/or the side wall of the closed container The present invention relates to a fumigation device characterized in that one side of the wall has a property of allowing water to penetrate.

The present invention has the above-mentioned structure, and when the water-permeable wall formed in the airtight container is submerged in water, water permeates through the wall and releases the heat-generating substances deposited on the wall. It oozes out and comes into contact with the pyrogen, causing it to generate heat.

As a result, the foaming agent-containing drug in the sealed container is heated through its partition walls due to the above heat generation, and when the heating reaches the decomposition temperature of the foaming agent, the foaming agent foams and, at the same time as this foaming, the drug components evaporate. The drug components are intensively evaporated in a short period of time.

By filling the limited space with this evaporated drug, a predetermined treatment depending on the medicinal efficacy can be performed.

Since this invention uses the above-mentioned transpiration method, the transpiration of the drug does not involve combustion or smoke generation, and it is safe and easy to use, and the thermal decomposition of the drug is almost non-existent. Since this does not occur, problems such as a decrease in effective volatilization rate caused by thermal decomposition can be solved, and the drug has the advantage of being able to exhibit its effects with high efficiency.

Furthermore, water is supplied to the pyrogen through a water-permeable wall formed in the sealed container, so by appropriately selecting the thickness of the wall, etc., the water can be supplied to the pyrogen after being submerged in water until it comes into contact with the pyrogen. It has the advantage that the time required for evaporation of the chemical after immersion in water can be controlled, and the time required for the chemical to evaporate after immersion in water can be set as appropriate in accordance with work conditions and the like.

Furthermore, water is stored in the walls due to flooding and then gradually seeps out towards the heating material, so water can be uniformly supplied from the entire bottom of the heating material to each part, making it possible to efficiently generate heat from the heating material. be.

Furthermore, the water-permeable wall cushions the impact that the device of the present invention receives during transportation and protects the exothermic substance and the entire device from impact, and also provides water supply means such as providing water absorption holes in the bottom wall of the sealed container. Since there is no need to use this method, there is no need to isolate the heat generating substance from the water absorption hole, preventing the heat generating substance from spilling out, and improving work efficiency.

In the present invention, the container for accommodating the pyrogen is of a closed type, and a container with an open top is connected to the closed container with the bottom wall or side wall or both of the open container as a partition. A blowing agent-containing fumigation agent is housed in this continuous open container.

The number of open containers connected to the closed container is arbitrary, and 1
There may be one or more.

When an open container is installed next to a closed container, it is desirable to install it concentrically on the inside or outside of the closed container, but in some cases, it is preferable to install it concentrically on the inside or outside of the closed container. It may also be provided.

The bottom wall of this open container may have a curved surface with a curved cross section, if necessary, and the side walls may be inclined.

The outer surfaces of the bottom wall and side walls may be textured to increase the surface area.

The inside of this open container may be divided vertically into small portions, and each small portion may contain a different type of drug separately in its chamber.

Further, the open container has an open upper end, and this opening can be provided with a protective cover having a ventilation hole.

The water-permeable wall formed in the closed container has a large number of fine voids, such as those found in open-cell foam or fibrous mat.

The constituent material of the wall is arbitrary as long as it has the property of permeating water, and examples thereof include synthetic fibers such as polyethylene, polypropylene, and polyvinyl chloride, or nonwoven fabrics made of synthetic fibers and cotton, woven fabrics, glass wool, asbestos, Examples include inorganic fiber mats such as rock wool, pulp paper such as filter paper, and the like.

In the present invention, as the fumigation agent contained in the open container, various agents conventionally used for purposes such as extermination of pests, sterilization, and scenting can be used.

The following are examples of typical drugs.

1 Insecticide o3-allyl-2-methylcyclopent-2-ene 4-
On-1-yl chrysanthemate (-Ship name: Allethrin, hereinafter referred to as Allethrin)ON-(3,4,5,6-
(titrahydrophthalimide) methyl chrysanthemate (-Ship name Phthalthrin, hereinafter referred to as Phthalthrin) 05-benzyl-3-furylmethyl chrysanthemate (-Several names Resmethrin, hereinafter referred to as Resmethrin) 05-Propargyl-3furylmethyl chrysanthemate (-Several names: Resmethrin, hereinafter referred to as Resmethrin) -Ship name Flamethrin) 02-Methyl-5-propargyl-3-furylmethyl
Chrysanthemate (-Ship name: Propulthrin) 03-Phenoxybenzyl d-cis/trans Chrysanthemate (-Ship name: Phenothrin) 03-Phenoxybenzyl 2
,2-dimethyl-3(β,β-dichloro)vinylcyclopropane lupoxylate (-Ship name: Vermethrin) and their steric and optical isomers 0 Optical isomers of allethrin (trade name: Pinamin Forte (registered trademark) : Manufactured by Sumitomo Chemical Co., Ltd.) Stereo-optical isomers of O-allethrin (Product name: Exnon: Manufactured by Sumitomo Chemical Co., Ltd.) Stereo-optical isomers of O-allethrin (Product name: Bioallethrin (registered trademark) Manufactured by Nilsel-Yuklav Co., Ltd. ) Pyrethroid insecticides such as the optical isomer of resmethrin (trade name: Crysuronforte (registered trademark): manufactured by Sumitomo Chemical Co., Ltd.).

00.0-dimethyl 0-(2,2-dichloro)vinylphosphate (DDVP) 00.0-dimethyl 0-(3-methyl-4-nitrophenyl)thionophosphate (hereinafter Sumithion (registered trademark): Sumitomo Organophosphorus insecticides such as 01-naphthyl N-methylcarbamate and OO-impropoxyphenyl N-methylcarbamate insecticides such as Kagaku Kogyo Co., Ltd.).

2 Bactericide O Salicylic acid 0 Quaternary ammonium salt (benzalkonium chloride) ○ Parachloromethaxylenol (PCMX) 02-(4
-thiazonitrile)-benzimidazole (TBZ) 3. Antifungal agent Oα-promocinnamic acid ON-dimethyl-N-phenyl-N'-(fluorocyclomethylthio)-sulfamide 4. Agricultural and horticultural fungicide O.tetrachloroiso Phthalonitrile 02.4-dichloro-6-(0-chloroanilino)-1
゜3.5-) Riazine OP, Ethyl P'-dichlorobenzylate 5 Plant growth regulator 04-Chlorphenoxyacetic acid ○Gibberellin 0N-(dimethylamino)succinamide ○α-Naphthylacetamide 6 Herbicide 02-4-D Soda salt 03.4-Dichloropropionanilide Various commonly used additives such as efficacy enhancers, volatilization rate improvers, deodorants, fragrances, etc. can be optionally added to the above fumigation agent.

As the blowing agent added to the above-mentioned fumigation agent, there can be used various blowing agents that generate mainly kiln gas, carbon dioxide gas, etc. upon thermal decomposition.

This foaming agent preferably has a foaming temperature of 300°C or less.

Typical examples include azodicarbonamide (foaming temperature 200-210°C), benzenesulfonyl hydrazide (
Examples include foaming temperature of 100 to 160°C.

The amount of foaming agent added to the above drug can be selected from a wide range, but it is usually added in an amount of 50 to 2,000 parts by weight, preferably 100 to 1,000 parts by weight, per 100 parts by weight of the drug.

In the present invention, known pyrogens can be used as the pyrogen that generates heat when it comes into contact with the water contained in the airtight container, and among these, calcium oxide generates heat to a high temperature of 150 to 300 degrees Celsius. , and does not produce harmful substances when generating heat, making it particularly suitable for this type of use.

The above-mentioned foaming agent-containing agent and pyrogen are stored in each of the above-mentioned containers in advance or upon use.

When these are placed in each of the containers during use, it is desirable that the containers be separable or that the bottom wall of the closed container be removable.

If a gap is formed between the bottom wall of the open container and the bottom wall of the closed container, the above-mentioned pyrogenic substance does not necessarily have to be filled into this gap, but the space between the bottom walls may be left as is. You can stay there.

In this case, the bottom wall is heated by heated air.

The present invention will be described below with reference to drawings showing an example of the implementation of the present invention.

Figures 1 and 2 show an example in which an open container 2 is connected to a closed container 1, with the bottom wall 2a of the open container 2 serving as a partition.
In this embodiment, only the bottom wall 1a of the closed container is a water permeable wall 3.
used as.

3 and 4 show a case where an open container 2 is provided concentrically within a closed container 1 with the bottom wall 2a and side wall 2b of the open container 2 as partition walls, and only the bottom wall 1a of the closed container 1 is infiltrated with water. sex wall 3
used as.

5 and 6 show modifications of the embodiment shown in FIGS. 3 and 4, in which the open container 2 has a hemispherical bottom wall 2a' and the closed container 2 has a hemispherical bottom wall 2a'. 1, the side wall 1b and bottom wall 1a of the closed container 1 are used as the water permeable wall 3, and the open container 2 of FIG. 6 has a tapered side wall 2b', and the side wall 1b of the closed container 1 It has a structural feature in that only the wall 3 is used as a water-permeable wall 3.

In the structure shown in FIGS. 3-4, 5 and 6, the bottom wall 2a or 2a' and the side wall 2b or 2b'
The entire circumferential surface of can be used as a heating heat transfer surface.

In use, when the water-permeable wall 3 of the closed container 1 is flooded with water, the water permeates through the wall 3 and is uniformly occluded within the wall 3, coming into contact with the exothermic substance deposited thereon. and make it heat up.

Due to this heat generation, the foaming agent-containing medicine 5 put into the open container 2 is absorbed by the side walls 2 b, 2 b' or the bottom wall 2 of the container 2.
a, 2a' or both are heated as heat transfer surfaces, and when the heating reaches the decomposition temperature of the blowing agent,
The foaming agent foams, and at the same time as this foaming, a large amount of the chemical evaporates instantly.

By filling the room with the evaporated medicine, predetermined treatments depending on the medicinal efficacy can be performed.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional view showing one example of implementing the present invention, Fig. 2 is a bottom view thereof, Fig. 3 is a plan view showing another example of implementing the present invention, and Fig. 4 is the same as Fig. 3. The center vertical cross-sectional view, FIGS. 5 and 6 are vertical cross-sectional views showing examples of changes in the shape of the open container in the above embodiment. In the figure, 1 is a closed container, 2 is an open container, 3 is a water-permeable wall, 4 is a pyrogen, and 5 is a blowing agent-containing agent.

Claims (1)

[Scope of utility model registration request] A container with an open top for accommodating a fumigation agent containing a foaming agent in a closed container for accommodating a pyrogen that generates heat upon contact with water is located on at least one of the bottom wall and side wall of the open container. A fumigation device characterized in that one side of the closed container is connected to the other as a partition wall, and at least one of the bottom wall and the side wall of the sealed container is made of a wall that allows water to penetrate.