JPS6236741B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in pesticide spraying nozzles.

When a nozzle having only an orifice at its tip pumps liquid, the liquid ejected from the orifice becomes atomized and diffused as shown in FIG. 3. However, when the pressure of the liquid is reduced for the purpose of spraying a small amount, as shown in Figure 4, the liquid ejected from the orifice turns into a film shaped like a candle flame and then becomes mist droplets, and the particle size significantly decreases. It becomes non-uniform and the dispersion becomes unstable.

This invention solves the above-mentioned conventional drawbacks.
The purpose is to provide a pesticide spraying nozzle for spraying small amounts of agricultural chemicals that can be atomized and dispersed well even at low pressures.

Another object of the present invention is to provide an agrochemical spraying nozzle for spraying a small amount of agrochemicals, which produces good atomized particles at low pressure, which is bubbly, does not blow away much even in the wind, and which can increase the rate of attachment to crops. is to provide.

The structure of the present invention will be described below with reference to FIGS. 1 and 2. Reference numeral 1 represents a nozzle body, and 2 represents an orifice incorporated in the tip of the nozzle body.

The orifice 2 has a protruding strip 3 extending across its center that is projected by pressing, and a grooved strip 4 is formed on the back surface. A nozzle 5 is formed in the center of the protrusion 3 in the length direction.

There is a core 6 on the inner surface of the orifice 2, and this core has a rib 7 that fits into the groove 4 of the orifice.
A small gap a is formed between the tip edge of the rib and the bottom of the groove. Reference numeral 8 indicates notches formed on the circumferential side of the core 6 at both ends of the rib 7, but they may also be holes.

In the figure, numeral 9 indicates a cap for tightening and fixing the orifice, and numeral 10 indicates packing arranged on the circumferential side of the core 6. Further, in FIG. 3, reference numeral 11 denotes a dispersion rod, which is connected and fastened to the nozzle main body 1 with a cap nut 12.

This nozzle has the above-mentioned structure, and this nozzle has an orifice at the tip formed with a convex strip that crosses the center by pressing, a nozzle at the center in the lengthwise direction of the convex strip, and a core on the inner surface of the orifice. Since the core is in contact with ribs that partially fit into the grooves formed on the back of the orifice, the liquid pumped into the nozzle body passes through the circumference of the core and reaches the orifice. Since the convex stripes are formed by pressing, the pumped liquid flows into the concave strips on the inner surface of the convex strips from both ends, collides at the center, and is ejected from the nozzle. Because the grooves are partially embedded, the inside of the convex strip becomes narrower, and therefore, even if the liquid pressure is low, the collision of the liquid at the center of the concave strip becomes strong and atomizes well, so that small amounts of agricultural chemicals can be This has the effect of significantly improving the spraying efficiency.

In addition, this nozzle has the above structure, and the axial hole 13 of the nozzle body 1 has a small diameter, and an outside air suction hole 14 is provided in the side wall near the rear end, and the liquid feeding hole 15 at the rear end has a small diameter. By doing so, the liquid pumped into the nozzle is atomized through the small hole at the rear end of the nozzle body, spreads throughout the axial hole 13 of the nozzle body, and advances to the orifice side, but at this time, outside air is sucked in by the ejector principle. By suctioning air through the holes 14, the mist particles become bubbles and become aggregated particles, and in this state, the mist particles do not reach far and easily adhere to the crops, resulting in high spraying efficiency despite the small amount of spraying. This has the effect that it can be done.

In the illustrated nozzle, the small diameter axial hole 13 in the nozzle body 1 is connected to a separate tube (or pipe) 16.
The liquid feeding hole 15 at the rear end of the nozzle body is formed by fitting a cold plate 17 having a small hole in the center as an example.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway longitudinal sectional front view of an example of the pesticide spraying nozzle according to the present invention, FIG. 2 is a partially cutaway exploded perspective view of the same, and FIG. 3 is a side view showing the spray state in the same usage mode. FIG. 4 is a side view showing a defective spray state due to low pressure of a conventional spray nozzle. 1... Nozzle body, 2... Orifice, 3... Convex line,
4... groove, 5... nozzle, 6... core, 7... rib, 8
...Notch groove, 13...Axis hole, 14...Outside air suction hole, 1
5...Liquid feeding hole.

Claims (1)

[Claims] 1. The orifice at the tip of the nozzle body has a single protruding strip extending across the center that is pressed out to form a nozzle at the center in the longitudinal direction of the protruding strip, and a core inside the orifice. A pesticide spraying nozzle characterized in that the core is provided with a rib that partially fits into the concave groove on the inner surface of the convex groove of the orifice. 2 The orifice at the tip of the nozzle body has a single protruding strip extending across the center by pressing to form a nozzle at the center in the lengthwise direction of the protruding strip, and a core is placed inside the orifice. This core is formed with a rib that partially fits into the concave line on the inner surface of the convex line of the orifice, and the axial hole of the nozzle body has a small diameter, and the outside air suction is connected to the side wall near the rear end of the nozzle body. A pesticide spraying nozzle characterized by having holes and a small diameter liquid feeding hole at the rear end.