JPH02212403A - Method for smoking expellent for insect pest and device therefor - Google Patents

Abstract

PURPOSE:To smoke an expellent by a gas generated by ignition means provided in a chamber in the lowest stage in a device consisting of the chamber in the lowest stage filled by combustion agent and upper chamber in one stage or plural stages filled by insect pest expellent. CONSTITUTION:In an expellent smoking device 1 made of sheet, etc., obtained by laminating a thermoplastic resin to Al, a combustion agent 4 and ignition member 5 are housed in the lower chamber 1a and granular expellent 6 obtained by blending the expellent with an auxiliary combustion agent and granulating the blend is filled in the upper chamber 1b having installed opening part 7. A gas generated by igniting to a combustion agent (e.g. containing a perchloric acid salt, chloric acid salt, nitric acid salt, nitro compound, peroxide, etc., and saccharides containing polysaccharides as a reducing agent) is introduced into the upper chamber, where the expellent is vaporized and accompanied by the gas and released to outside by opening 7. The aid combustion agent includes guanidine nitrates, nitrocelluloses having low nitrogen content, etc. The expellent is free from change with the lapse and the device also has simple structure.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a method for easily exterminating pests and diseases by converting one or more kinds of pest control agents into smoke by burning a combustion agent. This invention relates to a method of turning a pesticide into smoke and an apparatus therefor.

[Conventional technology]

Conventionally, when removing pests living in greenhouses, greenhouses, etc. using a pest control agent, (a) a combustion agent, which is a pyrogenic composition, is directly mixed, ignited, and smoked to remove the pest control agent (hereinafter referred to as A method of turning pesticides into smoke.

(b) A method of indirectly heating the pesticide and turning it into smoke.

Indirect heating methods include electric heating, reaction heat of quicklime, air oxidation heat of metal oxides, and heat generated by igniting and burning an exothermic composition consisting of a redox agent, separating it from the pesticide. There are several ways to use it.

[Problem to be solved by the invention]

However, in the former case, since the pesticide and oxidizing agent come into direct contact with each other, it is difficult to suppress the decomposition reaction of the pesticide during storage, and the heat of the oxidizing agent acts directly on the pesticide, resulting in thermal decomposition. In the latter case, since the pesticide does not come into direct contact with the oxidizing agent, the decomposition and deterioration of the pesticide is reduced, but the structure of the device becomes complicated, making it uneconomical.

In view of the above-mentioned circumstances, the present invention allows the hot aerosol generated from a combustion agent to pass through a pesticide to which a combustion improver that promotes vaporization is added, and vaporizes and entrains the pesticide, thereby easily smoking the pesticide. It is an object of the present invention to provide a method of turning a pesticide into smoke, which can be diffused, and an apparatus therefor.

[Failure to solve the problem]

In order to achieve the above object, in the smoke conversion method of the present invention, a combustion agent that generates a sufficient amount of gas by combustion is placed at the bottom, and a combustion aid is mixed in to promote vaporization of the upper pesticide. The pesticidal agent is provided in one or more stages, and by igniting the combustion agent, the generated hot aerosol is introduced into the upper stage, the pesticide is vaporized and entrained, and is dissipated to the outside from the top stage.

In addition, the device has two or more chambers formed in series, with a communication hole connecting each chamber, the top chamber has an opening that opens to the outside, and the bottom chamber is filled with a combustion agent. At the same time, an ignition means is provided to ignite this, and the upper chambers except the lowest chamber are filled with a pesticide mixed with a combustion aid that promotes vaporization of the pesticide.

[Effect]

Since the present invention has the above-mentioned configuration, the pesticide does not deteriorate over time, and the pesticide separated from the combustion agent is smoldered and released into the atmosphere by the hot gas generated by the combustion of the combustion agent. Therefore, thermal deterioration is greatly reduced, and the device has a simple structure. Moreover, by providing various pesticides in multiple stages as necessary, various pesticides with different effects can be fumed and released at the same time.

〔Example〕

Figures 1<a> and 1(b) show an embodiment of the pesticide smoke generator according to the present invention. In the figures, reference numeral 1 indicates rectangular sheets made of aluminum laminated with thermoplastic resin. This is a bag-like smoke generator which is heat-sealed and heat-sealed by tying the center portions of the longitudinal edges 2, leaving a communicating part 3a to form a partition 3, and dividing it into a lower chamber la1 and an upper chamber 1b. The width of the communication part is 3 to 10IIl
The lI range is good.

A combustion agent 4 and an ignition member 5 are housed in the lower chamber la.

The above-mentioned combustion agent is not limited as long as it generates a sufficient amount of gas and has a relatively low combustion temperature, but in particular perchlorates, chlorates, nitrates, nitrites, nitro compounds, and peroxides. Preferably, one or more of these are mixed with a saccharide including a polysaccharide as a reducing agent.

The ignition means may be of any kind as long as it can ignite the combustion agent inside, such as by placing one end of the fuse in the lower chamber la and pulling out the other end to the outside.

However, as shown in FIG.
A holding plate 5 made of paper etc. to which C is attached
It is preferable to use the ignition member 5 which is held by the string 5b and the other end of the string 5b is pulled out from the lower chamber 1a and stored.

Further, the upper chamber 1b is filled with a granular pesticide 6 that is granulated by mixing the pesticide and a combustion improver that promotes the vaporization of the pesticide, and one sheet of the upper chamber 1b has an opening formed by a cut line. Part 7
is formed.

The combustion aid to be mixed with the above pesticide is 150 to 250
Any substance that decomposes at °C, generates hot gas, and promotes the vaporization of the pesticide, and does not react with the pesticide over time, may be used, but in particular, guanidine nitrates, low nitrogen content nitrocelluloses, Those containing one or more of nitrites and amines are preferred.

To fill the bag with chemicals, etc., the longitudinal edges 2 and the compartments 3 are heat-sealed, and the lower chamber 1a is filled with the combustion agent 4 and the ignition member 5, and the upper chamber 1b is filled with the granular pesticide 6. Either heat-seal the short edge 8 of the ignition member 5 with one long edge 2 open, store the ignition member 5 in the lower chamber 1a, bring out the string from the short edge 8 side, and heat-seal the open long edge 2. After each drug is filled from the edge 2 side, this is heat-sealed.

To smoke the pesticide using this bag-shaped smoker 1,
Hanging hole 9 drilled in the heat-sealed portion of the short edge 8 of the upper chamber 1b
, and pull the string 5b.

By this operation, the ignition member 5 is pulled down, but when it hits the heat-sealed part, only the string is pulled,
The matchstick 5a and the rubbing plate 5c rub against each other and ignite, igniting the combustion agent 4. The hot aerosol generated by the combustion of the combustion agent 4 passes between the communication part 3a and the granular pesticide 6 and is released from the opening 7, but in the process, the granular pesticide 6 immediately vaporizes and becomes smoky. The pesticide is entrained and dispersed to the outside.

In the above explanation, the fumigation of one type of pesticide was explained, but as shown in Fig. 3, the royal room is the lowest chamber 1a, and a plurality of upper chambers 1b... are provided in series, and these are divided into sections. The uppermost chamber 1b of the plurality of upper chambers is partitioned by a section 3 and communicated by a communication section 3a, and an opening 7 is provided in the uppermost chamber 1b of the plurality of upper chambers. By adding pesticides, it is possible to smoke and release pesticides for various purposes at the same time. That is, combustion agent 4
The hot gas generated when ignited flows smoothly between the communication part 3a and the granular pesticide 6 and is dissipated from the opening, but in the process, the combustion improver of the granular pesticide in each upper chamber 1b... As a result of the hot gas generation, it is immediately smoldered, and is entrained in the generated aerosol and dissipated to the outside.

Further, FIGS. 4 to 6 show other examples of the pesticide smoke generator used in the present invention, and show a can-shaped smoke generator 11 using a can instead of a bag. 1. Parts having the same functions as those in FIG.

When the can-shaped smoke generator 11 has two stages, a thin thermoplastic resin film (not shown) is inserted into a cylindrical container 13 fitted with a bottom plate 12 to which an ignition wire 12a is attached as an ignition means. A packaged combustion agent 4 is put therein, a partition plate 14 having a communication hole 14a is fitted thereon, a particulate pesticide 6 packaged in a film is filled thereon, and a M having an opening 15a is filled.
A can-shaped smoker is formed by attaching 2S.

Further, a film may be pasted or a filter 16 may be placed in the communication hole 14a and opening 15a of the partition plate.

To smoke and dissipate the pesticide using this, the device is set at an appropriate position and the ignition wire 12a is ignited from the ignition port 17. Naturally, it is also possible to use the ignition member 5 which ignites when a string is pulled in the can-shaped smoke generator 1.1.

Moreover, in the case of multiple stages, the number of partition plates 14 may be increased to increase the types of granular pesticides 6, and various chemicals can be diffused at the same time.

Next, the present invention will be specifically explained using the bag-shaped smoke generator 1 shown in FIG. 1 as a representative example.

Example 1 Using a bag-shaped smoke generator 1 made of a 1l10x12 aluminum laminate sheet, the lower chamber 1a contained 10% ammonium perchlorate, 5% potassium nitrate, 30% lactose, and 5 talc.
35 g of a combustion agent consisting of 5% was stored together with the ignition member 5. In addition, in the upper chamber 1b, N is added as a plant pest control agent.
o-dichlorofluoromethylthio N,N-dimethyl-
N V enyl sulfamide (trade name Nievalen) 4
0%, guanidine nitrate 11%, low nitrogen nitrocellulose 20%, and talc 29% as combustion improvers.
．． 5 g was molded into 511IIIlφ granules and filled.

Two communicating portions 3a having a half-folded width of 3 ma+ were provided in the partitioning portion 3 of the upper chamber 1b and the lower chamber 1a with a slight interval therebetween.

When the string 5b of the ignition member 5 is pulled and the combustion agent 4 is ignited, the generated hot aerosol passes through the communication portion 3a and enters the upper chamber 1b, where it is cooled while the granular pesticide 4 in the upper chamber 1b is heated. is vaporized and the pesticide aerosol is released from the opening 7.

The emitted aerosol is collected by a door smoke filter,
As a result of dissolving and recovering Nieballene in acetone and analyzing it with a gas chromatograph, the decomposition rate of Nieballene was 14%.

In addition, the smoke generated from this bag-shaped smoke generator is 28Q m
When the gray mold that parasitizes the Kirari was spread in a plastic greenhouse where Kirari was cultivated, the mortality rate of the gray mold reached 98% on the seventh day after treatment.

Comparative Example 1 21 g of a smoke-generating composition consisting of 20% ammonium perchlorate, 30% lactose, 9% guanidine nitrate, and 41% talc was mixed with 7 g of Niebalen, ignited with a matchstick to generate smoke, and the same procedure as in Example 1 was carried out. The decomposition rate of Nievalen was measured and was 65%.

〔Effect of the invention〕

As described above, the present invention has an effect of suppressing the decomposition of pesticides that cannot be obtained with conventional methods and devices, is easy to use, and the device can be manufactured at low cost.
Not only can it exterminate a wide variety of pests and diseases at the same time by fuming different types of pesticides as needed, but it can also be used as a repellent, attractant, fragrance, etc., so it will contribute to these fields. is extremely large.

[Brief explanation of the drawing]

FIGS. 1(a) and 1(b) show an embodiment of the smoke generator according to the present invention. FIG. 1(a) is a partially cutaway front view, and FIG. 1(b) is a partially cutaway front view. 2 is a perspective view showing an example of an ignition member, FIG. 3 is a view corresponding to FIG. 1 (a) showing a multi-stage case, and FIG. 6 to 6 show other embodiments of the device of the present invention, FIG. 4 is a longitudinal sectional view, FIG. 5 is a view taken along the line ■-v in FIG. 4, and FIG. It is a Vl-VI line arrow view of a figure. Figure 1 (a) (b) 1...Bag-like smoke generator, la...Lower chamber (
lowermost chamber), lb...upper chamber, 2...longitudinal edge, 3...compartment section, 3a...communication section, 4.
...Burning agent, 5...Ignition member, 5a...
...Matsuchiyaku, 5b...String, 5C...
...Scrubbing plate, 5d...Holding plate, 6...
Granular pesticide, 7...Opening, 8...Short edge, 9...Hanging hole, 11...Can-shaped smoke generator, 12... ... Bottom plate, 12a ... Ignition line, 13 ... Container, 14 ... Partition plate, 1
4a...Communication hole, 15...Lid, 1.5
8...Opening, 16...Filter, 17
...Ignition port. Applicant: Sanko Chemical Industry Co., Ltd.

Claims (6)

[Claims] (1) A combustion agent that generates a sufficient amount of aerosol by combustion is placed at the bottom, and one or more stages of pest control agent mixed with a combustion enhancer to promote vaporization of the pest control agent are provided at the top. A method of turning a pest control agent into smoke, characterized by igniting the above-mentioned combustion agent, introducing the gas generated into the upper stage, vaporizing the pest control agent, and dissipating it outside from the uppermost stage. (2) The combustion agent is one or more of perchlorates, chlorates, nitrates, nitrites, nitro compounds, and peroxides,
2. The method of converting a pest control agent into smoke according to claim 1, which contains saccharides including polysaccharides as a reducing agent. (3) The method for converting pest control agents into smoke according to claim (1) or (2), wherein the combustion improver contains one or more of guanidine nitrates, low nitrogen content nitrocelluloses, nitrites, and amines. . (4) Two or more chambers are formed in series, a communication hole is provided to communicate each chamber, the top chamber is provided with an opening that opens to the outside, and the bottom chamber is filled with a combustion agent. A pest control agent characterized in that an ignition means is provided for igniting the pest control agent, and the upper chambers except the lowest chamber are filled with a pest control agent mixed with a combustion improver that promotes vaporization of the pest control agent. smoke generator. (5) The combustion agent is one or more of perchlorates, chlorates, nitrates, nitrites, nitro compounds, and peroxides,
5. The apparatus for converting a pest control agent into smoke according to claim 4, wherein the saccharide contains a saccharide including a polysaccharide as a reducing agent. (6) The pest control agent fuming device according to claim 4 or 5, wherein the combustion improver contains one or more of guanidine nitrates, low nitrogen content nitrocelluloses, nitrites, and amines.