JPS5917176Y2 - fumigation equipment - Google Patents

Description

[Detailed description of the invention] This invention mixes a fumigation agent with an organic foaming agent, heats the mixture indirectly to thermally decompose the organic foaming agent without combustion, and uses the action of the pyrolysis gas to This invention relates to improvements in equipment for effectively fumigating.

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 a pungent odor and is dangerous to the human body, as well as the risk of fire due to the combustion of the combustion agent. It is dangerous and has 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 water is connected in series with at least one of the bottom wall and side wall of the open container as a partition wall, and a water supply is provided in a communication portion leading from the water container to the inside of the closed container. The present invention has the above-mentioned structure, and is characterized by a seal that temporarily blocks water and automatically releases the water block after water is supplied. When water is supplied to a water receptacle, the supplied water temporarily stays inside the receptacle due to the water-tightness of the seal provided in the communication part. The purpose of metered water supply can be achieved by supplying water up to

For example, the seal is water-soluble, and after temporarily blocking water, it dissolves in water and naturally loses its water-blocking properties. Therefore, after a fixed amount of water is supplied, water enters the sealed container through the communication part and enters the sealed container. It comes into contact with the exothermic substance inside the container and causes it to generate heat.

This heat generation causes at least a portion of the bottom wall and side wall of the open container to be heated as a heat transfer surface.

When the heating reaches the decomposition temperature of the blowing agent,
At the same time as the foaming agent foams, evaporation of the drug occurs promoted by the foaming, and the drug is intensively evaporated in a short period of time.

A predetermined treatment can be performed by filling a limited space such as a room with the second evaporated chemical.

Since the present invention employs the above-mentioned transpiration means, the transpiration of the drug does not involve combustion or smoke generation, and it is extremely convenient and convenient 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, if too much water is supplied, heat will be consumed for evaporation of the excess water, resulting in large heat loss, and if insufficient water is supplied, problems such as failure of heat generation of the exothermic substance will occur. Since it can always be supplied in a constant quantity, such problems can be eliminated.

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 inside or outside 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 cross-section as required, 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.

Appropriate quantitative water supply means is provided at at least one appropriate position in the middle of the closed container.

This quantitative water supply means supplies a constant amount of water necessary for generating heat.

In this invention, when the water supply of a closed container is formed on the bottom wall or side wall for the purpose of quantitative supply, a water container is provided on the side of the container, and the outer wall of the water container is set at an appropriate height. An overflow port is provided.

If the water supply hole of the container is formed in the earthen wall, an overflow port for metered water supply is provided on the side wall of the water receptacle at the top of the container.

In this case, a water-soluble seal is provided in a slit communicating with a water supply hole, which will be described later, or in the water supply hole.

In use, by pouring water into a water container or water receiver provided outside the sealed container, excess water is drained from the overflow port and a fixed amount of water is supplied.

After this metered water supply, the seal is broken due to its water solubility, and the metered water enters the closed container through the water supply hole and comes into contact with the exothermic substance in the closed container, causing it to generate heat.

Due to this heat generation, the blowing agent-containing agent placed in the open container is heated using the side wall and/or the bottom wall of the container as a heat transfer surface, and when the blowing agent decomposition temperature is reached by this heating, the blowing agent is decomposed. It foams, and when it foams and opens, a large amount of the drug evaporates instantly.

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

As mentioned above, the present invention is equipped with an appropriate seal, but
This seal can optionally be replaced by a water-permeable layer as described below.

In other words, if the water-permeable layer described below is used, the water supply time can be appropriately controlled, so there is a margin for supplying a sufficient amount of water, and the seal has almost the same effect as the above-mentioned seal.

In the present invention, the overflow port may be provided in any manner and in any shape, and a means (for example, a sponge body) for receiving overflowing water may be provided below the overflow port.

Note that when water is supplied, when heat generation begins, the pressure inside the closed container will gradually increase as the temperature rises, and the inside of the container may become high pressure. Gas release holes for adjustment may be provided around the upper part of the earthen wall or side wall of the closed container.

In addition to providing the gas release hole in the upper part of the earthen side wall of the closed container as described above, the gas release hole may be formed by, for example, wrapping the top cover of the outer container and the inner container with a gap between them.

At least one gas release hole is sufficient.

In addition, water may be supplied to the pyrogen through a water-permeable layer of the closed container, and by appropriately selecting the thickness of the layer, etc., the time required for the water to come into contact with the pyrogen after water supply can be adjusted. Therefore, it has the advantage that the time required for the chemical to evaporate after water supply can be set as appropriate in accordance with work conditions and the like.

Furthermore, the supplied water is stored in the layer and then gradually seeped out to the source of the heat generating substance, so water can be uniformly supplied to all parts, and the feature is that the heat generating substance can be efficiently generated.

Further, the water-permeable layer can reduce the impact on the transport shell of the device of the present invention and protect the exothermic substance and, ultimately, the entire device from the impact.

The water-permeable layer of the closed container has many fine voids, such as those found in open-cell foam or fibrous mats.

The constituent material of the above layer is arbitrary as long as it has the property of permeating water, and examples thereof include nonwoven fabrics made of synthetic fibers such as polyethylene, polypropylene, and polyvinylidene chloride, or synthetic fibers such as these, and cotton, woven fabrics, glass wool, asbestos, Examples include inorganic fibrous pine I paper such as rock wool, pulp paper such as Nito 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.

Typical drugs include the following.

1 Insecticide 03-allyl-2-methylcyclopent-2ene-4-
On-1-yl chrysanthemate (-ship name: allethrin, hereinafter referred to as allethrin) ○ N -(3,4,5,6-titrahydrophthalimide)-methyl chrysanthemate (-ship name: phthalthrin: hereinafter referred to as phthalthrin) 05-Pencyl-3-furylmethyl chrysanthemate (-ship name Resmethrin, hereinafter referred to as resmethnon) 05-propargyl-3-furylmethyl chrysanthemate (-ship name Frame I Lin) 02-Methyl-5-propargyl-3 -Furylmethyl chrysanthemate (
-Ship name Propulsulin) 03-Phenoxybenzyl d-cis/trans-chrysanthemate (-Ship name Fetuthrin) 03-Phenoxybenzyl 2,2-dimethyl 3-(β,β-dichloro)hinylcyclopropane lupoxylate (-Ship name: Vermethrin) and their steric and optical isomers ○ It is an optical isomer of allethrin (product name: Pinamin Forte (registered trademark): Sumitomo Chemical Co., Ltd.) ○ Stereoscopic and optical isomers of allethrin (product name: Exrin : Manufactured by Sumitomo Chemical Co., Ltd.) ○ Stereo-optical isomers of allethrin (trade name: Bioallethrin (registered trademark), manufactured by Nilsel-Uclaf) 0 Optical isomers of resmethrin (trade name: Crythronforte (registered trademark): Sumitomo Chemical (manufactured by Kogyo Co., Ltd.) and other pyrethroid insecticides.

O090-dimethyl 0-(2,2-dichloro)vinylphosphate (DDVP) 00.0-dimethyl 0-(3-methyl-4-nitrophenyl)thionophosphate (hereinafter Sumithion (registered trademark): Sumitomo Chemical Industries, Ltd. Organophosphorus insecticides such as 01-naphthyl N-methylcarbamate and 00-isopropoxyphenyl N-methylcarbamate insecticides.

2 Disinfectant O Salicylic acid ○ Quaternary ammonium salt (benzalkonium chloride) ○ Parachloro-meta-xylenol (PCMX) 02
-(4-thiazonitrile)-benzimidazole (TB
Z) 3 Antifungal agents ○ α-Promocinamide ○ N-dimethyl-N-phenyl-N'-(fluorodichloromethylthio)-sulfamide 4 Agriculture and horticultural fungicides ○ Tetrachloroisophthalonitrile 02, 4-dichloro-6 -<O-, -chloroanilino)-1,3,5-triazine Op, P'-ethyl dichlorobenzylate 5 Plant growth regulator 04-chlorophenoxyacetic acid ○ Gibberellin ON-(dimethylamino)succinamide ○ α-naphthylacetamide 6 Herbicide 02-4-D Soda Salt 03.4-Dichloropropionanilide Various additives such as potency enhancers, volatilization rate improvers, deodorants, fragrances, etc., which are commonly used in the above fumigation agents, may be optionally added. Can be added.

As the foaming agent added to the above-mentioned fumigation agent, various foaming agents that are thermally decomposed to mainly generate nitrogen gas, carbon dioxide gas, etc. can be used.

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

Typical examples include azodicarbonamide (foaming temperature 200-210°C) and benzenesulfonyl hydrazide (foaming temperature 100-160°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 that generate heat upon contact with water contained in a sealed container can be used, and among these, calcium oxide has a temperature of 150 to 300°C.
It is particularly suitable for this type of use because it generates heat at a very high temperature and does not produce harmful substances when it generates heat.

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 above 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 exothermic substance does not necessarily have to be filled in this gap, but the space between the two equal 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 an embodiment of the present invention.

FIGS. 1, 2, and 3 are longitudinal cross-sectional views showing several examples of the device of the present invention provided with fixed-quantity water supply means, respectively.

In FIG. 1, reference numeral 6 denotes a water container provided on the side of the closed container 1, and an overflow lower is provided at a suitable height position on the outer wall 6a of the water container 6.

The lower end of this water container 6 is communicated with a slit 1-8 formed below the bottom surface of the container 1, and the water supply hole 5 in the bottom surface of the container 1 is opened in this slit 8.

A water-soluble seal 9 is provided at the communication portion between the lower end of the water container 6 and the slit 8, and this seal 9 is dissolved in water after a fixed amount of water is supplied to the water container 6, and is opened naturally.

When the water supplied to the water container 6 exceeds the overflow lower,
The water overflows from the overflow lower, and as a result, a fixed amount of water is supplied to the water container 6.

After a fixed amount of water is supplied, the seal 9 dissolves in water and loses its function, so water flows into the slit 8 from the lower end of the water container 6 and enters the closed container 1 through the water supply hole 5 opened in the slit 8.
penetrate inside.

As shown in FIG.
1, by appropriately selecting the material of the layer 11, the layer 11 substantially doubles as the seal 9 shown in FIG. It is not necessary to provide a seal between the sleeves 1 and 8.

In FIG. 3, an overflow lower is formed on the side wall of a water receptacle 10 at the top of the closed container 1 for supplying a fixed amount of water.

A water-soluble seal 9 closes the water supply hole 5, and is dissolved in water after a fixed amount of water is supplied.

Note that the water supply hole 5 is preferably provided with a water conduit 12 for guiding water to the bottom of the container 1, so that the exothermic substance 3 can be uniformly heated.

Further, the water receiver 10 and the water conduit 12 may be configured to be detachable so that they can be used as a metering cup.

As described above, in the present invention, the metered water injection means is provided in a state in which water can be injected into at least one appropriate position of the closed container by an appropriate means.

In use, the water injected in a fixed amount by the above-mentioned appropriate means by the metered water injection means provided in the closed container 1 contacts the exothermic substance in the closed container to generate heat.

Due to this heat generation, the foaming agent-containing chemical 3 placed in the open container 2 is heated using the side wall 2b or the bottom wall 2a of the container 2, or both as a heat transfer surface, and this heating causes the foaming agent to decompose. When the temperature is reached, the foaming agent foams, and at the same time as this foaming, a large amount of the agent 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]

FIGS. 1, 2, and 3 are longitudinal sectional views showing one example of an embodiment of the present invention, respectively. In the figure, 1 is a closed container, 2 is an open container, 3 is a foaming agent-containing drug 1, 4 is a pyrogen, 5 is a water supply hole, 6 is a water container, 7 is an overflow port, 8 is a slit, and 9 is a seal , 10 is a water tray, 1
1 is a water permeable layer, and 12 is a water conduit.

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. One side is connected as a partition wall, and a water container is connected to the sealed container, and the communication part between the inside of the sealed container and the water container temporarily blocks water when water is supplied, and naturally blocks water after water is supplied. A fumigation device characterized by being equipped with a seal that can be released.