CN111511206B - Quantitative injection device for pest control - Google Patents

Abstract

A spray mechanism (15) of the pest control constant injection device (10) is provided with a nozzle (15) having a plurality of spray ports (37), and can perform constant injection in which the injection amount of the pest control agent is in the range of 0.5-2.0 mL for 1 time. Further, in the injection mechanism, a space around a central axis (Ax) of the nozzle is divided in such a manner that a value obtained by equally dividing 360 ° by the same number of division as the number of the injection ports is a magnitude of a central angle around the axis, and at least one Cluster (CL) of the pest control agent is present in each of the plurality of divided spaces.

Description

Quantitative injection device for pest control

technical field

The present invention relates to a quantitative spraying device for controlling pests. The device comprises: a pest control agent containing a pest control component, a container containing the pest control agent, and a spraying mechanism for spraying a certain amount of the pest control agent from the container.

Background technique

Conventionally, aerosol injection devices (so-called aerosols) have been used for controlling indoor pests and the like. Such a spraying device is generally configured to accommodate the aerosol composition containing the stock solution and the propellant containing pest control ingredients in a container, and spray the aerosol composition from a nozzle provided in the container along with the user's spraying operation. out. For example, one of conventional aerosol injection devices is configured to inject an aerosol composition from a single injection port provided in a nozzle toward a space on the front side of the nozzle (for example, refer to Patent Document 1).

prior art literature

patent documents

Patent Document 1: (Japanese) Unexamined Patent Publication No. 2004-313939

Contents of the invention

The technical problem to be solved by the invention

The above-mentioned conventional spraying device sprays the aerosol composition directly to the pests to be controlled. On the other hand, in recent years, a spraying device has been proposed that sprays an aerosol composition into a space where pest control is desired, so that particles containing pest control components, etc. The aerosol composition of the walls, floors, etc. is gradually released into the space, thereby achieving pest control in the space at all times. In both the former spraying device and the latter spraying device, it is desired to further improve the pest control effect on the pests to be controlled.

One object of the present invention is to provide a quantitative spraying device for pest control that is excellent in the pest control effect on the pests to be controlled.

Technical means used to solve problems

[1] Regarding the first aspect of the present invention, the quantitative injection device for pest control includes:

a pest control agent containing a pest control ingredient; a container containing the pest control agent; and a spraying mechanism that sprays a certain amount of the pest control agent from the container,

The spraying mechanism is configured to have a spraying portion provided with a plurality of spraying ports for spraying the pest control agent and is capable of quantitative spraying in which the pest control agent sprayed from the multiple spraying ports The amount of one shot of the agent is a certain amount in the range of 0.5 to 2.0mL,

The injection mechanism is configured such that a space centered on a straight line including the central axis of the injection unit is equally divided into 360° by the same number of divisions as the plurality of injection ports. A plurality of divisional spaces are divided in such a manner as to surround a central angle of the straight line, and each of the plurality of divisional spaces has at least one cluster of the pest control agent injected from each of the plurality of injection ports.

[2] Regarding the second aspect of the present invention, in the quantitative injection device for controlling pests according to the first aspect,

At least one opening among the plurality of injection ports is configured to be inclined with respect to a plane perpendicular to the straight line.

[3] Regarding the third aspect of the present invention, in the quantitative injection device for pest control according to the first aspect or the second aspect,

An injection port corresponding to at least one of the plurality of injection ports is configured to be inclined with respect to a plane perpendicular to the straight line.

The inventor conducted in-depth studies on the quantitative spraying device for pest control related to the above-mentioned first aspect, and found that: with regard to such a quantitative spraying device, if the single injection amount of the pest control agent sprayed from a plurality of injection ports is limited to 0.5 A certain amount (for example, 1.0mL) within the range of ~2.0mL, and, for a space centered on a straight line including the central axis of the ejection part (jet button/nozzle, etc.), divide the same number as the number of ejection ports The value obtained by equally dividing 360° is divided into a plurality of divisional spaces by the size of the central angle around the straight line, and each of the plurality of divisional spaces has at least one cluster of pest control agent (refer to FIG. 3 . (a) and (b) of Fig. 3), an extremely excellent pest control effect can be obtained. Further, according to the quantitative spraying device for pest control of this structure, a predetermined amount of pest control agent is sprayed every time the user performs spraying operation, so it is difficult to produce the effect of pest control caused by the user's operation method. It can stably exert excellent pest control effect.

Therefore, the quantitative spraying apparatus for pest control of this structure is excellent in the pest control effect with respect to the control object pest.

According to the quantitative injection device for controlling pests according to the second aspect, at least one of the plurality of injection ports is formed to be inclined with respect to a plane perpendicular to a straight line including the central axis of the injection part, thereby enabling more reliable injection. Clusters of the pest control agent exist in the divided space corresponding to the injection port. In addition, it is preferable that the number of injection ports whose openings are inclined as described above is as large as possible, and it is more preferable that openings of all injection ports are inclined as described above.

According to the quantitative injection device for controlling pests according to the third aspect, the nozzle corresponding to at least one of the plurality of nozzles is inclined with respect to the plane perpendicular to the straight line including the central axis of the nozzle, thereby enabling more reliable injection. Clusters of the pest control agent exist in the divided space corresponding to the injection port. In addition, it is preferable that the number of injection ports whose ejection ports are inclined as described above is as large as possible, and it is more preferable that openings of all injection ports are inclined as described above.

Invention effect

According to the present invention, it is possible to provide a quantitative injection device for controlling pests which is excellent in the pest control effect on the pests to be controlled.

The present invention has been briefly described above. Further, details of the present invention will be clarified by reading through the modes for implementing the invention described below (hereinafter referred to as “embodiments”) with reference to the accompanying drawings.

Description of drawings

FIG. 1 is an external view showing a main part of a quantitative injection device for pest control according to an embodiment of the present invention.

(a) of Fig. 2 to (d) of Fig. 2 show the nozzle shown in Fig. 1 when the number of injection ports is four, and (a) of Fig. 2 is a perspective view thereof, and (b) of Fig. 2 Is its front view, (c) of Fig. 2 is its side view, (d) of Fig. 2 is A-A sectional view of (b) of Fig. 2.

(a) of FIG. 3 is a cross-sectional view corresponding to (d) of FIG. 2 showing the diffused state of clusters of the sprayed aerosol composition, and (b) of FIG. 3 shows the sprayed aerosol composition Front view of the diffusion state of the clusters.

Fig. 4 is a diagram for explaining the relationship between the number of injection ports and the state of diffusion of clusters of the injected aerosol composition.

5( a ) to 5( d ) are diagrams corresponding to FIG. 2( a ) to FIG. 2( d ) of the nozzle when the number of injection ports is three.

Figure 6 (a) to Figure 6 (d) show a modified example of the nozzle when the number of injection ports is four, and Figure 6 (a) is a perspective view thereof, and Figure 6 (b) is its main body. Views, (c) of Fig. 6 is a C-C sectional view of (b) of Fig. 6, and (d) of Fig. 6 is a D-D sectional view of (b) of Fig. 6 .

Symbol Description

10 Quantitative injection device for pest control

11 containers

12 valve stem (injection mechanism)

15 nozzles (injection mechanism)

16 actuator (injection mechanism)

37 jet port

Ax line

CL Cluster of Pest Control Agents

Detailed ways

<implementation mode>

Hereinafter, the quantitative injection device 10 for pest control (hereinafter, simply referred to as "the quantitative injection device 10") according to the embodiment of the present invention will be described with reference to the drawings.

(Structure of quantitative injection device for pest control)

As shown in FIG. 1 , the quantitative injection device 10 according to the embodiment of the present invention has: a hollow cylindrical container 11 filled with an aerosol composition containing pest control components; The vicinity of the center of the upper end protrudes upward along the axial direction of the container 11 and sprays the aerosol composition from the container 11 by being squeezed downward; In addition, as described later, the aerosol composition comprises: a stock solution containing a pest control ingredient and a solvent; and a propellant.

The sprayer cap 13 is provided with: a cap portion 14 assembled on the upper end portion of the container 11; the top of the snap. The nozzle 15 is housed and fixed in a nozzle housing chamber 19 provided in the actuator 16 . The actuator 16 is swingable via a hinge 17 extending from the front portion of the nozzle 15 on the front end side.

The lid portion 14 of the nebulizer cap 13 is made of, for example, synthetic resin, and its lower end portion is engaged with an attachment cup 18 provided on the upper end portion of the container 11 . An original package 20 covering the actuator 16 is integrally formed on the upper part of the actuator 16 .

The actuator 16 has: a flow path 21 extending along the direction in which the stem 12 protrudes (vertical direction; axial direction of the container 11 ); . The flow path 22 communicates with the nozzle accommodation chamber 19 in which the nozzle 15 is accommodated.

The valve stem 12 is assembled so as to be slidable in the vertical direction with respect to the housing (not shown) assembled to the mounting cup 18, and the biasing force of the spring (not shown) interposed between the valve stem 12 and the housing is utilized. And always being forced upwards. When the actuator 16 (in other words, the valve rod 12 ) is not depressed, the valve hole (not shown) inside the valve rod 12 is sealed by the rod rubber (not shown) by the biasing force of the spring. As a result, the storage chamber (not shown) of the housing communicated with the inside of the container 11 and the internal stem passage (not shown) extending in the vertical direction in the valve stem 12 communicated with the flow path 21 of the actuator 16 shown) becomes disconnected.

When the actuator 16 (valve rod 12) is depressed (that is, if the injection operation is performed), the valve hole of the valve rod 12 is separated from the rod rubber, and the storage chamber of the housing communicates with the passage in the rod. As a result, the aerosol composition filled in the casing storage chamber is supplied to the flow path 31 and the injection port 37 of the nozzle 15 via the passage in the rod, the flow path 21 and the flow path 22 (see (a) to FIG. 2 ). 2 (d), etc.), and eject the aerosol composition from the ejection port 37. When the aerosol composition is sprayed, due to the action of the propellant, the aerosol composition in the form of particles forms a cluster CL (aggregate), and spreads from the injection port 37 to the front side of the nozzle 15 (refer to (a) and (b) of Figure 3).

In this embodiment, the storage chamber of the casing is designed so that the total amount of the aerosol composition sprayed from the plurality of spray ports 37 is a certain amount in the range of 0.5 to 2.0 mL by one spray operation. volume (shape). That is, the quantitative injection device 10 is a so-called "quantitative injection type" aerosol injection device. Here, the stem 12, the nozzle 15, and the actuator 16 correspond to the "injection mechanism" of the present invention, and the nozzle 15 corresponds to the "injection unit" of the present invention.

With one injection operation, the total amount of the aerosol composition injected from the plurality of injection ports 37 may be a value in the range of 0.5 to 2.0 mL, for example, it is preferably a value in the range of 0.7 to 1.5 mL, and more It is preferably a value within the range of 0.9 to 1.3 mL, more preferably 1 mL.

As shown in FIG. 2( a ) to FIG. 2( d ), the resin-made nozzle 15 has a stepped cylindrical shape in which a flow path 31 is formed. The side shape of the nozzle 15 corresponds to the side shape of the nozzle housing chamber 19 provided in the actuator 16, and in this embodiment, the nozzle 15 has a large-diameter portion 32 on the front end side and a small-diameter portion 33 on the base end side. At a predetermined position in the axial direction on the outer peripheral surface of the small-diameter portion 33 , an annular locking portion 34 for preventing the nozzle 15 from falling out (falling off) from the nozzle housing chamber 19 is provided so as to protrude radially outward.

The flow path 31 extends from the base end of the nozzle 15 to the vicinity of the tip along a straight line Ax including the central axis of the nozzle 15 . In a state where the nozzle 15 is housed in the nozzle housing chamber 19 , the proximal opening of the flow path 31 communicates with the flow path 22 in the actuator 16 .

The front end side of the nozzle 15 is composed of a circular orthogonal surface 35 perpendicular to the straight line Ax, and a conical surface 36 extending obliquely with respect to the straight line Ax from the outer peripheral edge of the orthogonal surface 35 toward the radially outer side and toward the base end side. . A plurality of (four in this example) injection ports 37 are formed on the conical surface 36 . The plurality of injection ports 37 are arranged at intervals (every 90° in this example) in the circumferential direction around the straight line Ax, extend respectively along the straight line Ax, and communicate with the flow path 31 at the injection port 37a (refer to ( d)).

Since the plurality of injection ports 37 are formed on the conical surface 36 , the openings 37 b of the plurality of injection ports 37 are inclined from the straight line Ax toward the radially outer side and the proximal side along the conical surface 36 (see FIG. 2( d )). In other words, the openings 37b of the plurality of injection ports 37 are configured to be inclined with respect to a plane perpendicular to the straight line Ax. Therefore, as shown in (a) of Figure 3, when the aerosol composition (referring to the white arrow in the figure) after passing through the flow path 31 passes through the nozzle 37a and is injected from the opening 37b after passing through a plurality of injection ports 37, The clusters CL of the aerosol composition diffuse from each of the plurality of injection ports 37 in a state inclined radially outward.

In addition, the injection port 37 represents a space connecting the flow path 31 inside the nozzle 15 and the outside of the nozzle 15 . In addition, the nozzle 37 a represents an opening portion of the injection port 37 located on the innermost side of the nozzle 15 (that is, the flow path 31 side), and the opening 37 b represents an opening portion of the injection port 37 located on the outermost side of the nozzle 15 .

Further, in the present embodiment, as shown in (b) of FIG. 3 , the clusters CL of the aerosol composition sprayed and diffused from the four injection ports 37 are present in the space by passing through the adjacent injection ports in the circumferential direction. Each of the four divided spaces obtained by dividing the space on the front side of the nozzle 15 is divided by the dividing line L at the middle point of 37 . The width (the magnitude of the central angle θ) of each divided space is 90°. In other words, the nozzle 15 is configured such that a space centered on the straight line Ax is equally divided into 360° by the same number of divisions (=4) as the plurality of injection ports 37 as the central angle around the straight line. The size of θ is divided into a plurality of divided spaces (spaces divided by the dividing line L), and at least one cluster CL of the aerosol composition ejected from the plurality of ejection ports 37 is present in each of the plurality of divided spaces.

Therefore, in the present embodiment, since the number of injection ports 37 is four, the number of divided spaces is four, and the width (central angle) of each divided space is 90°. However, the number of injection ports 37 is not limited to four, as long as the clusters CL of the aerosol composition diffused from a plurality of (more than two) injection ports 37 are present in the same number as the plurality of injection ports 37 around the straight line Ax. There are no particular limitations on each of the division spaces obtained by dividing the number of divisions. For example, as shown in FIG. 4 , the number of divided spaces and the width (central angle) of each divided space can be set according to the number (two or more) of injection ports 37 .

For example, when the number of injection ports 37 is three, as shown in (a) to (d) of FIG. 5 corresponding to (a) to (d) of FIG. The three injection ports 37 formed on the surface 36 are arranged at intervals (every 120° in this example) in the circumferential direction around the straight line Ax. In this case, as shown in FIG. 4 , the number of divided spaces is three, and the width (central angle) of each divided space is 120°.

In the examples shown in (a) to (d) of FIG. 2 and (a) to (d) of FIG. Since Ax is inclined radially outward, the cluster CL of the aerosol composition tends to spread obliquely radially outward. In addition, as shown in FIG. 2( d ) and FIG. 5( d ), in these examples, the ejection ports 37 a of the plurality of ejection ports 37 are not particularly inclined with respect to the plane perpendicular to the straight line Ax.

On the other hand, as an example different from the examples shown in (a) to (d) of FIG. 2 and (a) to (d) of FIG. 5 , (a) to (d) of FIG. As shown in (d) of 6, the plurality of ejection openings 37 may be formed by the grooves 41 and 42 extending radially outward, so that clusters CL of the aerosol composition may be easily diffused obliquely outward in the radial direction.

Specifically, the nozzle 15 shown in (a) to (d) of FIG. A small-diameter portion 38 is formed. The front end side surface of the small-diameter portion 38 is constituted only by a circular orthogonal surface 39 perpendicular to the straight line Ax. As shown particularly in FIG. 6( c ) and FIG. 6( d ), the flow path 31 of the nozzle 15 extends continuously from the large diameter portion 32 to the vicinity of the front end of the small diameter portion 38 .

A pair of grooves 41 extending in the vertical direction and a pair of grooves 42 extending in the left-right direction are formed on the orthogonal surface 39 . Each of the grooves 41 and 42 extends in the radial direction from the radially inner end equidistant from the straight line Ax to the outer peripheral edge of the orthogonal surface 39 to constitute the injection port 37 . The injection port 37 communicates with the flow path 31 at an injection port 37 a located at the radially inner end portion of the grooves 41 , 42 . That is, each groove 41, 42 extends radially outward from the corresponding nozzle port 37a, and opens at the radially outer end.

Further, as shown in FIG. 6( c ), the bottom surfaces 41 a of the pair of grooves 41 extend from the nozzle opening 37 a in a direction perpendicular to the straight line Ax (that is, in the radial direction). On the other hand, as shown in FIG. 6( d ), the bottom surfaces 42 a of the pair of grooves 42 extend obliquely with respect to the straight line Ax toward the radially outer side and the base end side from the nozzle port 37 a.

In particular, as shown in (d) of FIG. 6 , the nozzle 37a is configured to be inclined relative to the plane perpendicular to the straight line Ax, so that the aerosol composition passing through the nozzle 37a is guided by the groove 42 and sprayed from the injection port 37. The clusters CL of the sol composition tend to spread in a state inclined radially outward.

However, any one of (a) to (d) of FIG. 2 , (a) to (d) of FIG. 5 , and (a) to (d) of FIG. In the form of the nozzle 15, the injection pressure of the aerosol composition at a position 20 cm away from the injection port 37 is preferably 0.1 to 20 gf, more preferably 0.3 to 10 gf, and even more preferably 0.5 to 5 gf. In addition, the injection pressure can be measured by a digital force gauge (model: DS2-2N, The aerosol composition was sprayed into the center of a Φ60 mm circular flat plate mounted on IMADA Co., Ltd., and the maximum detected value at this time was regarded as the spray load, and the average value of the spray load was calculated to measure the spray pressure.

Further, from the viewpoint of setting the injection time to a value within a desired range, the total opening area of the openings 37b of the injection ports 37 is preferably 0.05 to 8 mm ² , more preferably 0.2 to 4.0 mm ² , and even more preferably 0.4 to 4.0 mm 2 . 3.0mm ² . In addition, from the viewpoint of setting the injection time to a value within a desired range, the nozzles 37a shown in FIG. 2(d), FIG. 5(d), FIG. 6(c) and FIG. 6(d) The total opening area of the (liquid ejection portion) is preferably 0.05 to 8 mm ² , more preferably 0.2 to 3.0 mm ² , and still more preferably 0.4 to 2.5 mm ² .

Furthermore, the injection time based on one injection operation is preferably within 0.8 seconds, more preferably 0.2 to 0.7 seconds, and even more preferably 0.3 to 0.7 seconds. It is considered that by adopting such a spraying time, the volatility of the pest control component is efficiently increased, and the sustainability of the efficacy of the pest control component is improved. As a method of adjusting the injection time of one injection operation, for example, a method of adjusting the inner diameter of the injection port 37 , a method of adjusting the injection pressure, and the like are mentioned.

The aerosol composition filled in the container 11 contains: a stock solution containing a pest control ingredient and a solvent; and a propellant.

The pest control ingredient is capable of killing, repelling, knocking down target pests, and the like. The type of pest control component is not particularly limited, and known compounds can be used.

For example, examples of pest control components include transfluthrin, phenmethrin, permethrin, pyrethrin, allethrin, tetramethrin, resmethrin, and furanthrin. Esters, phenothrin, diphenthrin, propargylthrin, metamethrin, cyfluthrin, cypermethrin, deltamethrin, perflumethrin, dichlorofluthrin, perbromethrin, Pyrethroid compounds such as profluthrin and methofluthrin; silicon compounds such as flufluthrin; organic phosphorus such as fenitrothion, dichlorvos, chlorpyrifos-methyl, diazinon and fenthion carbamate, propoxur and other carbamate compounds; oxadiazole compounds such as oxazinone; compounds such as methoprene, pyriproxyfen, fipronil and sulfamethen; peppermint oil, sweet orange oil , Anise Oil, Cinnamon Oil, Clove Oil, Turpentine Oil, Eucalyptus Oil, Shiba Oil, Jasmine Oil, Neroli Oil, Peppermint Essential Oil, Bergamot Oil, Orange Leaf Oil, Lemon Oil, Lemongrass Oil, Cinnamon Oil, Citronella Oil , geranium oil, citral, L-menthol, citronellyl acetate, cinnamaldehyde, terpineol, nonanol, cis-jasmone, limonene, linalool, 1,8-cineole, geraniol, α-pinene, p-menthyl-3,8-diol, eugenol, menthyl acetate, thymol, benzyl benzoate, benzyl salicylate and other essential oil components, propylene glycol monopropyl ether, propylene glycol Monobutyl ether, dipropylene glycol monopropyl ether, dipropylene glycol monobutyl ether, dipropylene glycol dimethyl ether, ethylene glycol monoisobutyl ether, diethylene glycol monoisobutyl ether, diethylene glycol dibutyl ether, diethylene glycol Glycol ethers such as alcohol dimethyl ether and triethylene glycol dimethyl ether; dibasic acid esters such as dibutyl adipate, etc. These may be used alone or in combination of two or more.

What is necessary is just to select a pest control component suitably according to the kind of object pest. Examples of target pests include mosquitoes, flies, moths, bees, stinkbugs, cockroaches, ants, spiders, woodworms, mites, lice, centipedes, beetles, millipedes, spiders, horseflies, black flies, butterfly flies, and termites , chironomids, leafhoppers, bark beetles, bedbugs, earwigs, slugs, longhorns, derm beetles, gnats, clothes moths and common clothes moths. For flying pests such as mosquitoes, flies, moths, bees, gadflies, black flies, chironomids, leafhoppers, butterfly flies, clothes moths and common clothes moths, transfluthrin, methofluthrin, profluthrin are preferred esters, tetramethrin, propargylthrin, perfluorothrin (monfurolotrin) and phenothrin. In addition, for crawling pests such as cockroaches, stinkbugs, ants, spiders, woodworms, mites, lice, centipedes, beetles, millipedes, spiders, termites, bark beetles, bedbugs, earwigs, slugs, etc., tetramethrin and propargyl permethrin, pyrethrin, permethrin and phenothrin, etc.

The content of the pest control component is preferably 0.01 to 70% by mass/volume in the stock solution. When the pest control component is at least 0.01% by mass/volume in the stock solution, sufficient effects of the pest control component can be obtained, and when it is at most 70% by mass/volume, the production suitability is good. The content of the pest control component is more preferably 0.1% by mass/volume or more, still more preferably 0.3% by mass/volume or more, more preferably 65% by mass/volume or less, still more preferably 50% by mass/volume or less.

The stock solution may contain a solvent for the purposes of adjusting the viscosity of the stock solution, optimizing production adaptability, and improving the penetrability of the chemical to pests. Examples of such solvents include hydrocarbon solvents, alcohol solvents, aromatic solvents, water, and ester solvents. Examples of hydrocarbon solvents include aliphatic and alicyclic hydrocarbons such as paraffinic hydrocarbons and naphthenic hydrocarbons, preferably kerosene such as JIS No. 1 kerosene. Specifically, normal paraffin, isoparaffin, etc. are mentioned. Examples of normal paraffins include normal paraffins having 8 to 16 carbon atoms, such as Neothiazole manufactured by Chuo Kasei Co., Ltd., NORMAL PARAFFINE MA and Alcane C14-C17 manufactured by JXTGNippon Oil & Energy Corporation, and the like. Examples of isoparaffins include isoparaffins having 8 to 16 carbon atoms, such as IP CLEAN LX, IP CLEAN HX, SUPASOL FP25, Isoper-M, and Isoper-H manufactured by Idemitsu Kosan Co., Ltd. , Isoper-E and Isoper-L etc. Examples of the alcohol-based solvent include lower alcohols such as ethanol and propanol, polyhydric alcohols such as glycerin and ethylene glycol, and the like. As an aromatic solvent, toluene, xylene, etc. are mentioned, for example. As an ester type solvent, isopropyl myristate, butyl myristate, hexyl laurate, isopropyl palmitate, etc. are mentioned, for example.

The content of the solvent is preferably 30 to 99.99% by mass/volume in the stock solution. When the solvent is 30% by mass/volume or more in the stock solution, the production suitability can be optimized, and if it is 99.9% by mass/volume or less, sufficient efficacy can be ensured, so it is preferable. The content of the solvent is more preferably 35% by mass/volume or more, still more preferably 50% by mass/volume or more, more preferably 99.9% by mass/volume or less, still more preferably 99.5% by mass/volume or less.

The stock solution can contain other components within the range that does not impair the effect of the present invention. Examples of other components include preservatives, pH adjusters, ultraviolet absorbers, deodorants, fragrances, fungicides, antifungal agents, antistatic agents, defoamers, synergists, inorganic powders, surface active agents and dissolution aids, etc.

The content of the stock solution can be appropriately changed depending on the purpose of use of the quantitative injection device 10 and the combination with the propellant, and is not particularly limited. For example, it can be 1 to 50% by volume in an aerosol composition. When the stock solution is 1% by volume or more in the aerosol composition, a sufficient effect of the pest control component can be obtained, and if it is 50% by volume or less, contamination by the stock solution can be reduced. The content of the stock solution in the aerosol composition is more preferably 3% by volume or more, still more preferably 5% by volume or more, and more preferably 40% by volume or less, even more preferably 30% by volume or less.

The propellant is a medium for spraying the above-mentioned stock solution, and it is pressurized and filled in a pressure-resistant container together with the stock solution. As the propellant, for example, liquefied petroleum gas (LPG) such as propane, propylene, n-butane, and isobutane, liquefied gas such as dimethyl ether (DME), compressed gas such as carbon dioxide gas, nitrogen, and compressed air, and HFC-152a can be used. , HFC-134a, HFO-1234yf, HFO-1234ze and other halocarbon gases, etc., or one or more of them. The propellant used may be appropriately selected according to the compatibility with the stock solution and the container part of the nebulizer valve.

The content of the propellant can be appropriately changed depending on the purpose of use of the quantitative spray aerosol and the combination with the stock solution, and is not particularly limited. For example, it can be 50 to 99% by volume in the aerosol composition. If the amount of the propellant in the aerosol composition is 50% by volume or more, the spray can be sprayed with fine spray particles, so the pest control ingredient can be more easily diffused, and the effectiveness of the pest control ingredient can be easily sustained. Moreover, if the propellant is 99 volume % or less, the effect of a sufficient pest control component can be acquired. The content of the propellant in the aerosol composition is more preferably 60% by volume or more, still more preferably 70% by volume or more, and more preferably 97% by volume or less, further preferably 95% by volume or less.

In addition, the volume ratio of the stock solution to the propellant in the aerosol composition is preferably 1:99 to 50:50, more preferably 3:97 to 40:60. By setting it as such a volume ratio, sufficient pest control effect can be acquired.

(Pest Control Evaluation of Quantitative Injection Device)

The present inventors have found through various experiments that, as shown in the above-mentioned various embodiments, in the quantitative injection device 10, a plurality of injection ports 37 are provided in the nozzle 15, and the space centered on the straight line Ax is surrounded by the straight line Ax according to The same number of divisions as a plurality of injection ports 37 is divided, so that each of the obtained division spaces has at least one cluster CL of the aerosol composition ejected from a plurality of injection ports 37 (refer to (a) of FIG. 3 and FIG. In (b) of 3, further, the total amount of the pest control components sprayed from the plurality of spray ports 37 per one spray is set to a certain amount (for example, 1.0 mL) in the range of 0.5 to 2.0 mL, from Compared with the above-mentioned conventional spraying device, an extremely excellent pest control effect can be obtained. Hereinafter, it demonstrates using a test example.

Aerosol compositions 1 to 5 were prepared by containing pest control components, solvents, and propellants according to the formulations shown in Table 1 below. In addition, below, an aerosol composition may be described as a "composition". In addition, with respect to each specific gravity, transfluthrin is 1.388 (23°C), ethanol is 0.785 (25°C), isopropanol is 0.786 (20°C), and liquefied petroleum gas (LPG) is 0.56 (20°C). ℃).

【Table 1】

For compositions 1-6 shown in Table 1, in the pressure-resistant tank (composition 1, 4, 5: capacity 142mL; composition 2: capacity 59mL; composition 3: capacity 287mL; composition 6: Capacity 142mL) is filled with the mixture of pest control components and solvents, that is, the stock solution, and the pressure-resistant tank is closed with a sprayer valve (valve stem (ST) aperture 1.0mm×0.7mm). Next, liquefied petroleum gas (0.34 MPa (25° C.)) was charged as a propellant under pressure. Further, as shown in the following Tables 2 and 3, for the structure of the nozzle installed in the pressure tank, the amount of the composition sprayed in each spray (1 spray amount) and the composition contained in the sprayed The spraying amount of the pest control component was measured, and the knockdown rate of the test insects under various combinations (Examples 1-5, Comparative Examples 1-9) was measured.

Specifically, for the "nozzle structure" in Tables 2 to 4, the "X type" in the nozzle structure indicates (a) to (d) of Figure 2 and (a) to (6) of Figure 6 The nozzle with 4 injection ports as shown in (d), the "3-hole type" indicates the nozzle with 3 injection ports as shown in Figure 5 (a) to Figure 5 (d), and the "straight type"" indicates a nozzle (not shown) having a single injection port opening in the direction along the straight line of the nozzle (illustration omitted), and "horizontal type" indicates that there is a groove extending in the left-right direction on the front end surface perpendicular to the straight line of the nozzle and that A nozzle (illustration omitted) with a single injection port on the bottom surface. The total opening area of the openings 37b of the "X-shaped" nozzle is 2.3 mm ² , the total opening area of the openings 37 b of the "3-hole type" nozzle is 2.7 mm ² , and the total opening area of the openings 37 b of the "horizontal" nozzle is 0.5mm ² , and the total opening area of the openings 37b of the “straight” nozzle is 2.54mm ² .

For the "knockdown rate" in Table 2 below, the aerosol was sprayed in the center of the test room (length 5.4m x width 3.6m x height 2.4m) under the conditions of Examples 1-3 and Comparative Examples 1-7 Three hours after spraying the composition, female adult Culex mosquitoes (about 100) were expelled as test insects into the test room. Then, the number of knockdowns (KD number) after 60 minutes had passed was measured, and the knockdown rate (=KD number/number of all test insects×100) was calculated.

【Table 2】

For the "knockdown rate" in Table 3 below, the aerosol composition was sprayed under the conditions of Example 4 and Comparative Example 8 in the center of the same test room as in Table 2, and after 4 hours after spraying, Housefly adults (mixed male and female; about 100) were expelled into the test room as test insects. Then, the number of knockdowns (KD number) after 30 minutes had passed was measured, and the knockdown rate (=KD number/number of all test insects×100) was calculated.

【table 3】

For the "knockdown rate" in Table 4 below, the aerosol composition was sprayed under the conditions of Example 5 and Comparative Example 9 in the center of the same test room as in Table 2, and after 6 hours after spraying, Adult Culex mosquitoes (about 100) were discharged into the test room as test insects. Then, the number of knockdowns (KD number) after 60 minutes had passed was measured, and the knockdown rate (=KD number/number of all test insects×100) was calculated.

【Table 4】

According to the comparison of Examples 1 to 5 shown in Tables 2 to 4 and Comparative Examples 1 to 9, it can be seen that regardless of the type of pest control components, and regardless of the amount of sprayed aerosol composition per 1 spray The size of the aerosol composition is sprayed from the plurality of injection ports 37 provided on the nozzle 15 in such a manner that clusters CL exist in each of the above-mentioned divided spaces, and then the aerosol composition injected from the plurality of injection ports 37 in each injection By setting the total amount of the aerosol composition to a fixed amount (1.0 mL in the above example) within the range of 0.5 to 2.0 mL, an extremely excellent pest control effect can be obtained.

<other methods>

In addition, this invention is not limited to each said embodiment, Various modification examples can be employ|adopted within the scope of this invention. For example, the present invention is not limited to the above-described embodiments, and appropriate modifications, improvements, and the like are possible. In addition, the material, shape, size, number, arrangement position, etc. of each component in the above-mentioned embodiment are arbitrary as long as the present invention can be realized, and are not limited thereto.

For example, in the above-mentioned embodiment, the nozzle 15 has a stepped cylindrical shape, but the nozzle 15 may have a simple cylindrical shape with no height difference on the side surface in the entire straight line Ax direction.

Furthermore, in the embodiments shown in (a) to (d) of FIG. 2 and (a) to (d) of FIG. Inclined on a plane perpendicular to the straight line Ax. However, in the metered injection device of the present invention, at least one of the openings 37b may be inclined with respect to the plane perpendicular to the straight line Ax as long as at least one cluster CL of the aerosol composition can exist in each of the plurality of divided spaces.

Here, the features of the embodiments of the quantitative injection device 10 according to the present invention described above will be briefly described in the following [1] to [3].

[1] A quantitative injection device (10) for pest control, characterized in that,

Equipped with: a pest control agent containing a pest control ingredient; a container (11) containing the pest control agent; and a spraying mechanism (12, 15, 16) which sprays a certain amount of the pest control agent from the container ,

The spraying mechanism (12, 15, 16) is constituted as a cylindrical spraying part (15) provided with a plurality of spraying ports (37) for spraying the pest control agent, and can perform quantitative spraying. During the spraying, the amount of one injection of the pest control agent sprayed from the plurality of injection ports is a constant amount in the range of 0.5 to 2.0 mL,

The injection mechanism (12, 15, 16) is configured such that a space centered on a straight line (Ax) including a central axis of the injection unit is divided into the same number of divisions as the plurality of injection ports. The value obtained by equally dividing 360° is divided into a plurality of divisional spaces according to the size of the central angle around the straight line, and each of the plurality of divisional spaces has at least one jet ejected from each of the plurality of injection ports. The cluster (CL) of the pest control agent.

[2] The quantitative injection device for pest control according to the above [1], wherein,

At least one opening (37b) of the plurality of injection ports (37) is configured to be inclined with respect to a plane perpendicular to the straight line (Ax).

[3] The quantitative injection device for pest control according to the above [1] or the above [2], wherein,

An injection port (37a) corresponding to at least one of the plurality of injection ports (37) is configured to be inclined with respect to a plane perpendicular to the straight line (Ax).

This application is based on the Japanese patent application (Japanese Patent Application No. 2017-238159) filed on December 12, 2017, the content of which is incorporated herein by reference.

Industrial applicability

The quantitative injection device for pest control of the present invention is excellent in the pest control effect on the pests to be controlled. The present invention having this effect can be used, for example, as a spraying device that sprays an aerosol composition into a space where pest control is desired to continuously achieve pest control in the space.

Claims (6)

1. A quantitative spraying device for pest control, which is characterized in that,

the pest control quantitative spraying device is provided with: a pest control agent containing a pest control ingredient; a container containing the pest control agent; and an injection mechanism that injects a certain amount of the pest control agent from the container,

the injection mechanism is configured to have an injection part provided with three or more injection ports and to be capable of performing a fixed-quantity injection in which 1 injection amount of the pest control agent injected from the three or more injection ports is a certain amount in the range of 0.5 to 2.0mL,

the injection mechanism is configured to: dividing a space centered on a straight line including a central axis of the injection part into three or more divided spaces so that a value obtained by equally dividing 360 ° by the same number of divisions as the three or more injection ports is a magnitude of a central angle around the straight line, and allowing at least one cluster of the pest control agent injected from each of the three or more injection ports to exist in each of the three or more divided spaces,

the quantitative spraying device for pest control has a nozzle corresponding to at least 1 of the three or more spray ports,

the area of the opening is larger than the area of the spout.

2. The quantitative spraying device for pest control according to claim 1, wherein,

at least 1 opening of the three or more ejection ports is configured to be inclined with respect to a plane orthogonal to the straight line.

3. The quantitative spraying device for pest control according to claim 1 or 2, wherein,

the nozzle hole corresponding to at least 1 of the three or more nozzle holes is formed to be inclined with respect to a plane orthogonal to the straight line.

4. A quantitative spraying device for pest control, which is characterized in that,

the pest control quantitative spraying device is provided with: a pest control agent containing a pest control ingredient; a container containing the pest control agent; and an injection mechanism that injects a certain amount of the pest control agent from the container,

the injection mechanism is configured to have an injection part provided with three to five injection ports and to be capable of a fixed-amount injection in which 1 injection amount of the pest control agent injected from the three to five injection ports is a certain amount in the range of 0.5 to 2.0mL,

the injection mechanism is configured to: dividing a space centered on a straight line including a central axis of the injection part into three to five divided spaces in such a manner that a value obtained by equally dividing 360 ° by the same number of divisions as the three to five injection ports is a magnitude of a central angle around the straight line, and allowing at least one cluster of the pest control agent injected from each of the three to five injection ports to exist in each of the three to five divided spaces,

the quantitative spraying device for pest control has a nozzle corresponding to at least 1 of the three to five spraying ports.

5. The quantitative spraying device for pest control according to claim 4, wherein,

at least 1 opening of the three or more ejection ports is configured to be inclined with respect to a plane orthogonal to the straight line.

6. The quantitative spraying device for pest control according to claim 4 or 5, wherein,

the nozzle hole corresponding to at least 1 of the three or more nozzle holes is formed to be inclined with respect to a plane orthogonal to the straight line.

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