JPH0315147Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a pesticide spraying hose made of a soft synthetic resin and having a plurality of pesticide guide cylinders arranged downward in the spraying hole of the hose.

[Prior art and its problems] Publication of Utility Model Publication No. 49-33907 has been proposed as a spraying hose of this type, but in this case, when the agricultural chemical guide tube moves while coming into contact with the rice tip side during spraying, it causes damage to the rice. There is a risk that dew may adhere to the spray opening, which is the opening at the lower end of the pesticide guide tube, and that the pesticide will adhere to the spray opening wet with dew, causing the spray opening to gradually become narrower and reduce the spraying function. was.

In addition, in Japanese Utility Model Application Publication No. 52-78119, it has been proposed that the cylindrical mounting part of the guide tube having a tupular part is inserted into a hole drilled in a dispersion pipe, but this is not a tuppy-shaped part. Because pesticides are sprayed out over a wide area, it is not possible to concentrate the spray on the roots of rice plants, for example.
In addition, in Japanese Utility Model Publication No. 55-42853, a cylindrical portion is formed in an outer cylinder formed in a round shape, and is shorter than the outer cylinder and has an appropriate gap with the inner surface of the outer cylinder, and the outer cylinder is dispersed. It has been proposed to attach the pesticide to the exhaust hole of the pipe, but this sprays pesticides in a whirlpool form from the injection port in the cylindrical part in an enlarged manner according to the radiation angle of the ripple-shaped outer cylinder. It was not possible to concentrate the pesticide on the roots of the outer tube, and there was a risk that the water droplets adhering to the outer tube would cause the pesticide to adhere to the lower opening of the outer tube and cause clogging.

In addition, in Japanese Utility Model Publication No. 58-43963, it is proposed that a comparatively long flexible guide cylinder is attached to the spray pipe, but the pesticide sprayed from the spray nozzle is formed vertically. The pesticide traveled straight along the guide tube and was sprayed locally in a concentrated manner along the extension of the guide tube, and unlike the case where the pesticide spreads and sprays out, it was not possible to spray the pesticide evenly and over a wide area at the base of the rice root. Furthermore, when connecting a pesticide guide tube to the spray hole of a soft synthetic resin spray hose, loads may be applied to the soft synthetic resin spray hose due to the movement of the guide tube when attaching and detaching the guide tube or during spraying operations. Therefore, there was a problem in that cracks were likely to occur particularly at the connection point of the spraying hole of the spraying hose, and the spraying hose was easily damaged.

Therefore, the present invention prevents damage to the soft synthetic resin spray hose from the connection point of the pesticide guide tube, and also prevents clogging that occurs when the pesticide guide tube gets wet with dew from rice plants, etc., and pesticides adhere to this dew. To provide an agrochemical spraying hose capable of preventing the spread of agrochemicals and further spraying agrochemicals over a wide range of rice roots.

[Means for Solving the Problems] The present invention provides a long spraying hose made of soft synthetic resin, in which a plurality of pesticide guide tubes are arranged downward in the spraying hole, and a communication hole communicating with the spraying hole is provided. A peripheral flange is formed on the upper edge of the short cylindrical catch seat, and the peripheral flange is welded to the periphery of the spray hole on the outer surface of the spraying hose made of soft synthetic resin, thereby fixing the catch to the spraying hose. and a protrusion is formed on at least one of the outer peripheral surface of the short cylindrical portion of the catch seat or the upper inner peripheral surface of the pesticide guide cylinder, and the upper part of the pesticide guide cylinder is press-fitted into the catch seat so that it can be attached and detached. , the pesticide guide cylinder is enlarged downward to form a pesticide spray angle α and is made longer, and the pesticide spray is sprayed from the spray opening at the lower end of the pesticide guide cylinder by 7° to 7°, which is larger than the pesticide spray angle α. A cone-shaped spray opening protective peripheral wall consisting of an outwardly slanted wall at an angle α of 30 degrees is installed in series to prevent sun blockage caused by the spray opening becoming wet with dew, etc., and to cover a wide area around the base of rice roots. It can be sprayed on.

[Function] The spraying port, which is the terminal opening through which the pesticide is guided, is surrounded by the spraying port protective peripheral wall that is inclined at an angle β larger than the spraying angle α of the pesticide sprayed from the spraying port, so that the pesticide is not guided. Even if the peripheral wall gets wet when the cylinder is moved, the spraying port is protected from getting wet, and the pesticide sprayed from the spraying port at the pesticide spraying angle α is ejected without following the inner surface of the peripheral wall, so it does not adhere to the peripheral wall. This prevents clogging.

Further, the pesticide that has passed through the pesticide guide tube which is formed to be elongated while expanding downward to form a pesticide spraying angle α, is ejected in an enlarged manner downward with the pesticide spraying angle α.

[Example] Hereinafter, an example of the present invention will be described with reference to the accompanying drawings.

1 to 3, a long spray hose 2 made of a thin soft synthetic resin such as polyethylene or vinyl resin is connected to a backpack-type power spreader 1, and a plurality of spray hoses formed at intervals are connected to the spray hose 2. Spray hole 3
is provided with a short cylindrical catch seat 4, and the first catch seat 4 is provided with a short cylindrical catch seat 4.
As clearly shown in the figure, it has a communication hole 4a that communicates with the spraying hole 3, and a peripheral flange 4b that follows the outer circumferential shape of the spraying hose 2 is formed on its upper edge, and this peripheral flange 4b is made of soft synthetic resin. The said spray hose 2 of
A catch seat 4 is fixed to the spray hose 2 by welding to the periphery of the spray hole 3, and a protrusion 4d is formed on the outer peripheral surface of the short cylindrical portion 4c of the catch seat 4. The upper part of the pesticide guide cylinder 5 is press-fitted into the short cylinder part 4c and is detachably provided.

The guide cylinder 5 has a peripheral wall of the main cylinder part 5a that is inclined outward as it moves downward to form a pesticide spray angle α and is elongated, and the lower end opening of the main cylinder part 5a is formed to be longer. A spraying port 6 is formed which is the guide end of the pesticide A, and the spraying port 6 is inclined outward at an angle β that is larger than the pesticide ejection angle α, which is the diffusion angle when the pesticide A is sprayed from the spraying port 6. A cone-shaped, for example, approximately cone-shaped dispersion port protective peripheral wall portion 7 is provided in succession, and includes an inclined wall 7a. Therefore, when one person carries the backpack-type power spreader 1 on his or her back and the other person walks and sprays pesticides while holding the end of the spraying hose 2, the pesticide guide cylinder 5 moves while intruding into the rice field. Although dew on the rice tips adheres to the pesticide guide tube 5, the spraying port 6, which is the end of the guide section for the pesticide A, is surrounded by the peripheral wall 7, so it does not get wet, and the pesticide A does not get wet. 6
Since it does not adhere to the surface, clogging is prevented. In addition, by inserting the pesticide guide tube 5 into the rice field and spraying the pesticide A, the distance between the spraying port 6 and the root of the rice becomes shorter.
Since the scattering of the pesticide A due to the influence of wind and the like can be suppressed, the pesticide A can be effectively sprayed at the base of the rice plants. Also, the pesticide spraying angle α of the pesticide A sprayed from the spraying port 6 at the lower end of the pesticide guide tube 5 is
Since the spraying port protection peripheral wall portion 7 is provided in series, which slopes outward at a larger angle β, the pesticide sprayed from the spraying port 6 at the pesticide spraying angle α does not adhere to the inner surface of the peripheral wall portion 7, and instead flows into the peripheral wall portion. 7 and is ejected downward, forming a space B, so that even if the peripheral wall part 7 gets wet with rice water droplets, the pesticide A will not adhere to the peripheral wall part 7. Note that the peripheral wall portion also includes one having a slit. Note that when θ in Fig. 3 is small, the flow flows along the inner surface of the peripheral wall 7, but if θ becomes larger than the angle that gives the minimum value of ζ in the following equation, the flow separates from the inner surface of the peripheral wall 7 and forms a jet. do.

ζ≒ ^{0.011θ 1.22 However} , it is better to form the inclination angle β of the peripheral surface of the spray port protection peripheral wall 7 to be sufficiently larger than the pesticide spray angle α in terms of preventing the pesticide A from adhering. If it is too large, the aperture width of the peripheral wall 7 becomes large, which makes it difficult for the pesticide to collide with the rice tips and enter between the rice tips, making it impossible to spray the pesticide sufficiently to the roots of the rice plants. Therefore, the inclination angle β
The angle should be set at about 7° to 30°, preferably 10° to 15°.If the angle is smaller than 7°, the effect of preventing pesticide A from adhering will be low, and if the angle is larger than 30°, it will be difficult to penetrate between the rice tips. It is difficult to spray up to In addition, the pesticide A expands downward to form a pesticide spray angle α, and the long guide tube 5 increases the straightness of the pesticide A, and the pesticide A is expanded and sprayed at the pesticide spray angle α, so that the pesticide A is spread out between rice fields. Guide tube 5 that entered smoothly
Since it is ejected from the plant, it can be sprayed over a wide area at the base of the rice plants, making it effective in controlling rice blight and rice blast disease.

In addition, by welding the peripheral flange 4b of the catch seat 4 to the periphery of the spraying hole 3 on the outer surface of the soft synthetic resin spraying hose 2, the peripheral edge of the spraying hole 3 can be fixed to the peripheral flange 4d.
This prevents cracks from forming in the dispersion hole 3 due to the rocking of the guide tube 5 during the spraying operation, and furthermore, the guide tube 5 is reinforced with the short tube portion 4c of the catch seat 4, which has a protrusion 4d formed on the outer peripheral surface. The guide tube 5 can be attached and detached without damaging the soft synthetic resin spray hose 2 by press-fitting it.

[Effects of the invention] The present invention is a long spraying hose made of soft synthetic resin in which a large number of pesticide guide cylinders are arranged downward in the spraying hole, and the present invention is a short cylindrical spraying hose that has a communication hole that communicates with the spraying hole. A peripheral flange is formed on the upper edge of the receiving seat, and the peripheral flange is welded to the peripheral edge of the spraying hole on the outer surface of the spraying hose made of soft synthetic resin to fix the receiving seat to the spraying hose. A protrusion is formed on at least one of the outer circumferential surface of the short cylindrical portion of the seat or the upper inner circumferential surface of the pesticide guide cylinder, and the upper part of the pesticide guide tube is press-fitted into the seat so as to be detachable, and the pesticide guide The cylinder is expanded downward to form a spraying angle α of the pesticide, and is made longer, and the pesticide is sprayed from the spraying port at the lower end of the pesticide guide cylinder at an angle of 7° to 30°, which is larger than the guiding angle α. A cone-shaped spray opening protective peripheral wall consisting of an outwardly sloping wall at β is installed in series, and can spray a wide range of rice roots while preventing clogging caused by the spray opening becoming wet with dew, etc. This prevents damage to the soft synthetic resin spray hose from the connection point of the pesticide guide tube, and also prevents clogging caused by the pesticide guide tube getting wet with dew from rice plants, etc., and pesticides adhering to this dew. Furthermore, it is possible to provide a pesticide spraying hose that can spray pesticides over a wide range of rice roots.

[Brief explanation of drawings]

FIG. 1 is a usage state diagram, FIG. 2 is a perspective view of the pesticide guide barrel, and FIG. 3 is a sectional view showing the spraying state. 1... Power spreader, 2... Spreading hose, 3...
Spreading hole, 4... catch seat, 4a... communicating hole, 4b...
Peripheral flange, 4c...Short tube part, 4d...Protrusion, 5...
...Guide tube, 6...Spraying port, 7...Peripheral wall for protecting spraying port, α...Pesticide spray angle, β...Angle.

Claims (1)

[Scope of utility model registration request] In a pesticide spraying hose made of a long spraying hose made of soft synthetic resin, in which a number of pesticide guide cylinders are arranged downward in the spraying hole, a circumferential part is attached to the upper edge of a short cylindrical catch having a communication hole that communicates with the spraying hole. a flange is formed, the peripheral flange is welded to the periphery of the spraying hole on the outer surface of the spraying hose made of soft synthetic resin to fix the catch to the spraying hose; Alternatively, a protrusion is formed on at least one of the inner peripheral surfaces of the upper part of the pesticide guide tube, and the upper part of the pesticide guide tube is press-fitted into the seat so as to be detachable, and the pesticide guide tube is expanded downward. a spraying port at the lower end of the pesticide guide cylinder, the pesticide spraying angle α is larger than the spraying angle α, and the pesticide is ejected from the spraying port at the spraying port at the lower end of the pesticide guide tube. This agricultural chemical spraying hose is characterized by having a cone-shaped spraying port protection peripheral wall made of a continuous wall, and being able to spray a wide range of rice roots while preventing clogging caused by the spraying port getting wet with dew, etc.