JP4190058B2 - Method of spraying solid preparation - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for spraying a solid preparation, and more particularly, to a method for easily and uniformly spraying a solid preparation by blowing air from the shore of a paddy field.
[0002]
[Prior art]
A spraying device for agricultural chemicals with a blower is called a power spraying device, generally called a back-loading power spraying device, and is equipped with various spraying heads such as a multi-necked hose, a shore jetty, a diffusion jetty, etc. It is widely spread in the agricultural production field because it can efficiently disperse solid agrochemical preparations and granular fertilizers such as powders and fine granules.
[0003]
The spraying of the agrochemical formulation by this power spreader is to carry the medicine into the tank and then carry it with the spreader and adjust the discharge amount by a metering mechanism such as the shutter opening of the tank. It was effective for a solid agricultural chemical formulation having a relatively small particle size that required a large amount of spraying of about 4 kg.
[0004]
In recent years, especially in the granules to be sprayed on paddy fields, the progress of agricultural chemical formulation technology has been remarkable, and agricultural chemical formulations having a spraying amount of 1 kg or less per 10a have appeared. The particle size of this preparation varies from the conventional 0.6 mm to 1.5 mm to 2 mm to 10 mm. However, in the power spreader that has been widely used in the past, the amount of sprayed medicine per 100a is less than 1 kg due to its structure. There is a problem that it is difficult to adjust the discharge amount in a small amount corresponding to an agrochemical formulation having a small particle size. In other words, since the entire amount of the medicine is discharged before the entire paddy field is processed or the remaining amount of the medicine cannot be confirmed, there is a situation where the discharge amount is reduced and it is sprayed in duplicate. It was not suitable for spraying the preparation. Also, especially for small spray formulations with a large particle size, for example, a particle size of 3 mm or more, if the discharge rate is reduced, the agricultural chemical formulation will cause bridging at the outlet of the drug tank during spraying, resulting in discharge failure. There was also a problem that could not be sprayed by the conventional mechanism.
[0005]
[Problems to be solved by the invention]
The present invention is intended to solve the problem of spraying a small amount sprayed preparation by a power spreader, and it is easy to adjust the discharge amount in a small amount range and confirm the remaining amount of the preparation regardless of the particle size of the solid preparation. However, it is an object of the present invention to provide a method for spraying a solid preparation.
[0006]
[Means for Solving the Problems]
As a result of diligent research on the method of accurately spraying a solid preparation, the present inventors, as a result of spraying a solid preparation using a pesticide spraying device having a blower, in a portion where the airflow is constant, for example, in the spraying jet at the rear stage of the blower, The knowledge that if a movable plate is installed near the supply port of the preparation and the preparation is supplied after adjusting this plate to an appropriate angle, it is easy to adjust the discharge rate in a small amount regardless of the particle size of the preparation. And the present invention was completed.
[0007]
That is, the present invention provides a hole in a blower tube, a container filled with a solid preparation from the outside is attached to the hole, and a plate movable within a range of 0 to 90 degrees with respect to the blowing direction on the upstream side of the hole. Provided is a method for spraying a solid preparation characterized in that the plate is provided at an appropriate angle after blowing and the solid preparation in the container is scattered.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
An example of a basic apparatus used for carrying out the method of the present invention is schematically shown in FIG. In the figure, 1 is a blower tube, 2 is a container mounting hole, 3 is a solid preparation container, 4 is a solid preparation, 5 is a movable plate, 6 is an adjustment string, 7 is a small hole, and 8 is a spring.
[0009]
In the apparatus of FIG. 1, the solid preparation container 3 is attached to the container attachment hole 2 of the blower tube 1, and then an air stream is flown, and then the adjustment string 6 is pulled and the movable plate 5 closed by the force of the spring 8 is opened. As a result, the solid preparation 4 in the solid preparation container 3 is drawn out, flows to the downstream side of the air flow, and is dispersed. And since the force which pulls out the solid formulation 4 is related to the angle of the movable plate 5, the amount of application can be adjusted by adjusting the adjustment string 6 for maintaining this angle. Specifically, the application amount of the preparation can be easily adjusted by pulling the end of the adjusting string 6 (or a wire or the like) attached to the movable plate that is pulled out of the air blowing tube. Note that the angle of the plate when the medicine is not sprayed is 0 degrees, and the spraying (discharge) amount can be increased as the angle is increased.
[0010]
FIG. 2 schematically shows another example of a basic apparatus used for carrying out the method of the present invention. In the figure, 1 to 5 are the same as FIG. 1, 9 is a shaft, 10 is a trigger, and 11 is a stopper, but the container mounting hole is made of an elastic material and can fit the container. It is possible.
[0011]
In order to use the apparatus of FIG. 2, first, the solid preparation container 3 is attached to the container attachment hole 2 in the blower tube 1, and then the airflow is allowed to flow. One end of the movable plate 5 is stopped by a shaft 9 and is normally pressed against the stopper 11 by the force of a spring (not shown). However, the movable plate 5 can be opened by pressing down the trigger 10, thereby solidifying the movable plate 5. The solid preparation 4 in the preparation container 3 gradually falls downward and is sprayed by the force of the airflow. And since the amount of the formulation sprayed by the airflow is determined by the width of the gap between the movable plate 5 and the stopper 11, the trigger 10 coupled to the movable plate 5 is appropriately operated, and the sprayed amount can be adjusted by adjusting this portion. Can be adjusted.
[0012]
In the method of the present invention, the means and apparatus for flowing the airflow are not particularly limited, but it is easy to use a spraying head at the rear stage of a blower of a power spreader that is generally used at present. That is, the power spreader which is a pesticide spraying device having a blower is roughly divided into a chemical tank and a blower. In order to easily carry out the present invention, the chemical is supplied to the spraying nozzle at the rear stage of the blower. A flat or curved plate that can be changed to any angle between 0 and 90 degrees with respect to the air blowing direction is attached to the blower side end of the hole in the spray nozzle, and attached to the outside of the spray nozzle. Means for supplying and spraying the solid preparation from the drug tank can be taken.
[0013]
In the apparatus for carrying out the method of the present invention, the area of the movable plate 5 mounted on the upstream side of the container mounting hole 2 is 70% or less, preferably 10 to 50% of the cross-sectional area of the blower pipe 1 (spraying nozzle). The attachment angle is not limited as long as it is 90 degrees or less, and is preferably adjustable to an arbitrary angle in the range of 0 degrees to 90 degrees in order to adjust the discharge amount. The material of the movable plate 5 is not limited as long as it can be easily molded such as metal, plastic, vinyl chloride, and has such strength and thickness that it is not deformed by the airflow in the blower tube 1.
[0014]
Although there is no restriction | limiting in particular in the capacity | capacitance of the solid formulation container 3 used by the method of this invention, Usually, it is 0.1 liter-10 liters, It is a volume of 0.5 liters-3 liters desirably. The solid preparation container 3 may be a closed system, or may be an open system provided with small holes 7 on the opposite side and / or side of the tank opening so as not to spill the solid preparation. The material of the solid preparation container 3 is preferably a plastic that is transparent or translucent in whole or in part so that the remaining amount of the preparation can be confirmed when sprayed.
[0015]
Furthermore, although the opening area of the container attachment hole 2 of the blower tube 1 varies depending on the cross-sectional area (spraying nozzle diameter) of the blower tube 1, it is 0.5% to 50%, preferably 1% to 30% of the cross-sectional area. . The solid preparation container 3 is attached so that the opening is in contact with the container attachment hole 2. Usually, as a solid preparation container, the opening part may be a screw-in type as shown in FIG. 1 or a fitting type as shown in FIG. 2, and it is preferable to adjust the container mounting hole 2 so that it can be easily detached.
[0016]
In the present invention, the position where the solid preparation container 3 is attached may be perpendicular to the spray nozzle, and may be attached to the lower side of the blower tube as shown in FIG. 1 or to the upper side as shown in FIG. . Furthermore, when using a conventionally used power spreader, the drug tank of the power spreader and the container mounting hole 2 may be connected by an appropriate plastic pipe or the like, and the drug tank may be used as a solid preparation container.
[0017]
In the present invention, air flow for spraying solid preparation, well almost equal to the specifications of the power sprayer that has spread currently generally, for example, blowing function forces 10 m 3 ^/ min to 20 m 3 ^/ min or so, the vent pipe diameter The (spraying nozzle diameter) is about 3 cm to 10 cm in diameter and the length is about 20 cm to 300 cm, but is not particularly limited, and it is possible to spray with a multi-nose hose of several tens of meters.
[0018]
The spraying method of the present invention can spray a conventional solid preparation that processes about 3 kg per 10a, but sprays a preparation that processes the same 1 kg in recent years, and further a so-called small amount spray preparation that processes 100 to 500 g. It is particularly suitable for The composition of these preparations is not particularly limited, and in addition to the conventional pesticidal granules mainly composed of pesticidal active ingredients and mineral fine powders, the pesticidal active ingredients, surfactants and water-soluble carriers are the main components, and binders or hollow A granular preparation containing a supplement such as the body can also be sprayed. Furthermore, the present invention is not limited to these, and it can also be used for solid preparations containing, for example, fertilizer components and plant growth promoting components. The solid preparation is generally granular, and the particle size is usually about 0.6 mm to 10 mm and the apparent specific gravity is about 0.3 to 1.5, but is not particularly limited thereto.
[0019]
As described above, the example in which the container mounting hole 2 or the like is attached in the middle of the vent pipe 1 has been described as FIG. 1 and FIG. 2, but when utilizing a power spreader that has been widely used conventionally, for example, power spreading An attachment provided with a container mounting hole 2, a movable plate 5, an angle adjusting means, etc. is attached to the tip of the spraying nozzle at the rear stage of the blower of the machine, a solid preparation container 3 is attached to the container mounting hole 2, and then the power spreader is operated. There is also a method of spraying and applying a solid preparation. By using such an attachment, it is possible to use the same power spreader for both the normal spraying method and the spraying method of the present invention.
[0020]
Next, the attachment for attaching to a power spreader is demonstrated concretely. 3 is a front view of the attachment for the power spreader, FIG. 4 is a plan view thereof, and FIG. 5 is a sectional view thereof. In the figure, 2 is a container mounting hole, 5 is a movable plate, 10 is a trigger, 12 is a cylinder, 13 is a base, and 14 is a floating hole.
[0021]
In this attachment, the movable plate 5 is attached below the container attachment hole 2. A trigger 10 is attached to the movable plate 5. One end of the trigger 10 is fixed to the shaft, and the other end is movable within the range of the floating hole 14. By applying a force to the movable portion, the movable plate 5 moves up and down (opens and closes). In addition, a spring 8 is attached to the portion fixed to the shaft, and the movable plate 5 is closed by its action when no force is applied to the trigger 10.
[0022]
When this attachment is used, first, it is attached to the spray nozzle side of the power sprayer, and a container filled with the solid preparation is attached to the container attachment hole 2. In this case, the medicine is not put into the medicine tank of the power spreader body. Next, the power spreader is started, the position of the movable plate 5 is adjusted by pushing the trigger 10 while confirming the discharge amount of the drug with the naked eye, and the drug is sprayed. And when there are few spraying quantities of a chemical | medical agent, what is necessary is just to push the trigger 10 further and to increase the spraying quantity.
[0023]
In the method for spraying the solid preparation of the present invention, the sprayer usually sprays the drug in the paddy field while walking along the shore of the paddy field without entering the paddy field. The speed of walking on the shore while spraying is generally about 0.3m / sec to 0.6m / sec. Also, assuming a paddy field of 10a, the length of the shore varies depending on the shape of the paddy field. Generally, it is about 125 m to 150 m, and the time required for spraying is about 200 seconds to 500 seconds by dividing the length of the shore by the walking speed. Accordingly, the discharge amount of the medicine per unit time is determined by the time required for the above spraying.
[0024]
Specifically, although it depends on the dose sprayed per 10a, for example, in the case of a formulation spraying 3 kg per 10a, the discharge amount per minute is 360 to 900 g, in the case of a formulation spraying 1 kg per 10a, the same In the case of a formulation spraying 0.5 kg per 120 g to 300 g and 10 a, in the case of a formulation spraying 0.25 kg per 10 g to the same 60 g, 30 g to 30 g, if the discharge amount is adjusted within this range good.
[0025]
【Example】
EXAMPLES Hereinafter, although an Example and a test example demonstrate this invention further in detail, this invention is not restrict | limited at all by these Examples.
[0026]
Example 1
A 2cm x 3.5cm hole is drilled at a position of 12cm from the connecting part of the spraying spout with a diameter of 5.5cm and a length of 60cm to the power spreader, 2.5cm x 4cm (42% of the cross-sectional area of the spraying head) A plastic flat plate having a size of 2 mm was attached using a hinge so that the hinge part was positioned at the blower side (upstream side) end of the hole in the spray nozzle. Also, a hole with a diameter of 2 mm was made in the upper part of the position where the plate was attached, and one end of the string attached to the plate was taken out from the hole to the outside of the spray nozzle. The length of the above-mentioned string was set so that the angle of the flat plate was 90 degrees with respect to the blowing direction when pulled to the maximum. In addition, the above-mentioned string was marked so that the angle of the plate could be confirmed in advance.
[0027]
The drug tank was a plastic closed type with a diameter of 9 cm and a height of 18 cm and a volume of 1100 ml, and was attached to the upper side of the spray nozzle. After filling a chemical | medical agent tank with a granular agrochemical formulation and attaching to the above-mentioned spraying nozzle, it mounted | worn to the back | latter stage of the power spreader (the Maruyama Seisakusho make, MD-J60G type, the maximum ventilation volume 17m < ³ > / min). The power spreader was operated at the maximum engine output, and the angle of the plate in the spray nozzle was adjusted by pulling the above-mentioned string to spray the drug.
[0028]
Example 2
The size of the hole opened in the spray nozzle of Example 1 was 2.5 cm × 3.5 cm, the size of the flat plate to be attached was 2 cm × 3 cm (25% of the cross-sectional area of the spray nozzle), and the granular agrochemical formulation was sprayed in the same manner.
[0029]
Example 3
A 2cm x 3.5cm hole is drilled at a position of 12cm from the connecting part of the spraying spout with a diameter of 5.5cm and a length of 60cm to the power spreader, 2.5cm x 4cm (42% of the cross-sectional area of the spraying head) A plastic flat plate having a size of 2 mm was attached using a hinge so that the hinge part was positioned at the blower side (upstream side) end of the hole in the spray nozzle. Also, a hole with a diameter of 2 mm was made in the upper part of the position where the plate was attached, and one end of the string attached to the plate was taken out from the hole to the outside of the spray nozzle. The length of the above-mentioned string was set so that the angle of the flat plate was 90 degrees with respect to the blowing direction when pulled to the maximum. In addition, the above-mentioned string was marked so that the angle of the plate could be confirmed in advance.
[0030]
The drug tank is made of plastic with a diameter of 9 cm and a height of 18 cm and a volume of 1100 ml. Two holes with a diameter of 8 mm are formed on the side and one hole with the same diameter is formed on the bottom. A 20-mesh screen is used to prevent the formulation from spilling out. And attached to the lower side of the spray nozzle.
[0031]
After filling a chemical | medical agent tank with a granular agrochemical formulation and attaching to the above-mentioned spraying nozzle, it mounted | worn to the back | latter stage of the power spreader (the Maruyama Seisakusho make, MD-J60G type, the maximum ventilation volume 17m < ³ > / min). The power spreader was operated at the maximum engine output, and the angle of the plate in the spray nozzle was adjusted by pulling the above-mentioned string to spray the drug.
[0032]
Comparative example After filling the drug tank of a power spreader (Maruyama Seisakusho, MD-J60G type, maximum air flow rate 17m ³ / min), the shutter opening was adjusted and the drug was sprayed at the maximum engine output. .
[0033]
Test Example Dischargeability and ultimate flight distance measurement test of granular pesticide formulation:
Using the apparatus of Examples 1 to 3, 1000 ml of granular agrochemical formulation with different particle diameters was sprayed by changing the angle of the plate attached in the spray nozzle, divided by the time until the end of spraying, the discharge amount per minute It was measured. In addition, the position where the drug arrived from the sprayed position was measured with a measure, and the reach distance was measured. Normal spraying by the power spreader of the comparative example was performed by changing the damper opening of the sprayer body with the same chemical. The results of spraying using the apparatuses of Examples 1 to 3 are shown in Tables 1 to 3, respectively, and the results of Comparative Examples are shown in Table 4.
[0034]
[Table 1]
──────────────────────────────────
Grain size Apparent movable plate Dischargeability Reach distance Chemical treatment amount ^*
(Mm) Specific gravity angle (g / min) (m) (kg)
──────────────────────────────────
0.8 1.2 25 850 3-9 3
1.2 1.1 15 250 5-12 1
1.5 0.8 10 130 5-10 0.5
5.0 0.5 20 60 12-25 0.25
──────────────────────────────────
* Reference value for the amount of drug treated per 10a.
[0035]
[Table 2]
──────────────────────────────────
Grain size Apparent movable plate Dischargeability Reach distance Chemical treatment amount ^*
(Mm) Specific gravity angle (g / min) (m) (kg)
──────────────────────────────────
0.8 1.2 25 700 3-9 3
1.2 1.1 20 180 5-12 1
1.5 0.8 20 100 5-10 0.5
5.0 0.5 30 50 12-25 0.25
──────────────────────────────────
* Reference value for the amount of drug treated per 10a.
[0036]
[Table 3]
──────────────────────────────────
Grain size Apparent movable plate Dischargeability Reach distance Chemical treatment amount ^*
(Mm) Specific gravity angle (g / min) (m) (kg)
──────────────────────────────────
0.8 1.2 85 800 3-7 3
1.2 1.1 70 280 3-10 1
1.5 0.7 60 130 3-8 0.5
5.0 0.5 50 50 10-20 0.25
──────────────────────────────────
* Reference value for the amount of drug treated per 10a.
[0037]
[Table 4]
──────────────────────────────────
Grain size Apparent shutter ^* Exhaling distance Arrival distance Chemical treatment amount ^**
(Mm) Specific gravity Opening (g / min) (m) (kg)
──────────────────────────────────
1.5 0.8 4/10 400 5-10 0.5
1.5 0.8 3/10 250 ⁺ 0.5
1.5 0.8 2/10 <20 ⁺ 0.5
5.0 0.5 7/10 650 12-25 0.25
5.0 0.5 6/10 500 12-25 0.25
5.0 0.5 5/10 30 ⁺ 0.25
──────────────────────────────────
* Scale value of power spreader.
** Reference value for drug throughput per 10a.
+ Clogging occurs at the outlet of the chemical tank, and continuous discharge cannot be obtained.
[0038]
As is apparent from the results, in the apparatuses of Examples 1 to 3, the discharge performance corresponding to the drug processing amount of the solid preparation was obtained by adjusting the angle of the movable plate. On the other hand, in the apparatus of the comparative example, clogging was caused when a preparation having a relatively large particle size was discharged, or on the contrary, the dischargeability was too high, so that the preparation could not be properly sprayed.
[0039]
【The invention's effect】
The spraying method of the solid preparation according to the present invention is easy to adjust the discharge amount in a small amount range regardless of the physical properties of the solid preparation such as particle size and apparent specific gravity, and spraying while checking the remaining amount of the preparation. Is possible. In particular, according to the spraying method of the present invention, conventionally, when adjusting the discharge amount in a small amount region, it was possible to spray a small amount spray formulation with a large particle size, which was caused to cause a discharge failure and could not be sprayed. The range of dosage form design can be expanded.
[Brief description of the drawings]
1 schematically shows an example of a basic apparatus used for carrying out the method of the present invention. FIG. 2 schematically shows another example of a basic apparatus used for carrying out the method of the present invention. Fig. 3 is a front view of an attachment for a power spreader used in the method of the present invention. Fig. 4 is a plan view of an attachment for a power spreader used in the method of the present invention. Fig. 5 is a power spreader used in the method of the present invention. Cross-sectional view of the attachment [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ...... Air blow pipe 8 ...... Spring 2 ...... Container attachment hole 9 ...... Shaft 3 ...... Solid preparation container 10 ...... Trigger 4 ...... Solid preparation 11 ...... Stopper 5 ...... Movable plate 12 ...... Tube 6 ... … Adjustment string 13…… Base 7…… Small hole 14……

Claims (8)

A plate that is provided with only a hole for supplying a solid preparation in the blower tube, a container filled with the solid preparation is attached to the hole from the outside, and is movable on the upstream side of the hole in a range of 0 to 90 degrees with respect to the blowing direction The solid preparation spraying method in which the solid preparation in the container is scattered without using an air supply means for blowing the air into the container from the blower pipe after setting the plate to an appropriate angle after blowing.   The method for spraying a solid preparation according to claim 1, wherein the area of the movable plate is in the range of 10 to 50% of the cross-sectional area of the blower tube.   The solid preparation spraying method according to claim 1 or 2, wherein the solid preparation to be dispersed is a solid agricultural chemical preparation or a solid fertilizer preparation.   The method for spraying a solid preparation according to any one of claims 1 to 3, wherein the solid preparation to be dispersed is sprayed from 100 g to 1 kg per 10a.   The solid preparation according to any one of claims 1 to 3, wherein the solid preparation to be dispersed is a granule having a particle size of 0.6 mm to 10 mm and an apparent specific gravity of 0.3 to 1.5. Spraying method.   The method for spraying a solid preparation according to any one of claims 1 to 5, wherein a drug tank of a power spreader connected by a plastic pipe is used as the container filled with the solid preparation. A container mounting hole is provided in the cylindrical body, and a movable plate is mounted in the range of 0 to 90 degrees with respect to the blowing direction held at one end inside the cylindrical body on the upstream side of the mounting hole, and the other end of the movable plate An attachment for dispersing a solid preparation, provided with a movable plate angle adjusting means , wherein the attachment hole does not include an air supply means for blowing air into a container attached to the cylindrical body. Scattering attachment.   The attachment for solid formulation spraying according to claim 7, which is attached to a spray nozzle of a power spreader.

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