JPH0451893Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a spraying hose head, and more particularly, to a spraying hose head that can improve the dispersion density of powder and granules.

[Conventional technology]

5 and 6 relate to a conventional spraying hose nozzle head, FIG. 5 shows the shape of the nozzle hole 12 of the spraying hose 10, and FIG. It shows. A plurality of nozzle holes 12 are bored in the elongated spray hose 10 at appropriate intervals in the longitudinal direction, and the shape of the nozzle holes 12 is a fifth hole.
It was circular as shown in the figure. When spraying powder or granules, the spraying hose 10 is stretched horizontally with the nozzle hole 12 facing downward, and the spraying hose 1
Powder is fed under pressure into the spray hose 10 from the base end side of the spray hose 10. Since the nozzle hole 12 is circular, the powder is jetted downward from the nozzle hole 12 in a conical jet shape 14.
As a result, directly below the spraying area 16 corresponding to each nozzle hole 12 directly below the spraying hose 10 is circular,
The adjacent circles overlap by a predetermined area, and the length in the traveling direction 19 of the spraying hose 10 in each directly below spraying area 16 is such that the part passing through the center of the directly below spraying area 16 is significantly larger than the other parts. growing. In addition, in the overlapping portion of the adjacent directly below spraying areas 16, the length C of the spraying hose 10 in the advancing direction 19 is relatively large.

Furthermore, Japanese Utility Model Application Laid-Open Publication No. 61-200154 discloses an example in which the nozzle hole of a spray hose is reinforced with a synthetic resin bonding film attached to the inside of the spray hose.

[Problem that the invention attempts to solve]

Therefore, the spreading density of powder in the passing spreading area 18 that occurs as the spreading hose 10 moves in the traveling direction 19 is such that the overlapping part of the directly below spreading area 16 and the central part of the directly below spreading area 16 are different from each other. The size of the powder becomes very large relative to the area, and the distribution density of the powder becomes uneven, which causes chemical damage and worsens economic efficiency. In Figure 6,
A indicates a portion where the powder and granular material is scattered at a low density, and B indicates a portion where the powder and granular material is distributed at a high density.

Although the bonded film of the prior art described in the above-mentioned publication is useful for reinforcement to some extent, it is itself lightweight and cannot be used as a resistor against the reaction force of the jet at the nozzle hole.

[Means for solving problems]

Here, this invention has a spray hose nozzle head in which a large number of nozzle holes are bored at appropriate intervals in the longitudinal direction of the spray hose on the side surface of a long spray hose made of a flexible material. Formed as elongated holes extending in directions inclined at appropriate angles with respect to the longitudinal direction of the spraying hose, and covering the outside of these nozzle holes with a reinforcing covering piece having elongated holes that match the elongated holes. This paper proposes a new spray hose jet.

[Effect]

The granular material is force-fed to the spray hose jet and is ejected from each nozzle hole of the spray hose jet. Since the nozzle hole has an elongated hole shape, the shape of the ejected powder from the elongated hole is flat, and the width of the spray area directly below the spray hose nozzle in the direction of movement of the spray hose nozzle is equal to almost equal.

〔Example〕

This invention will be described below with reference to the embodiments shown in FIGS. 1 to 4.

FIG. 1 shows the surface of the spraying hose 20 on the nozzle hole 22 side. 20 are arranged at appropriate intervals in the longitudinal direction. The reinforcing covering piece 24 is
It plays a role of reinforcing the part of the spray hose 20 that forms the nozzle hole 22 and is fixed to the spray hose 20. The nozzle hole 22 is formed as a long hole that is long in a direction inclined at an appropriate angle θ with respect to the longitudinal direction of the spray hose 20.

FIG. 2 shows the state of dispersion of powder and granules from the nozzle holes 22. When spraying powder, the spraying hose 20 is stretched horizontally with the nozzle holes 22 facing downward, and the powder is force-fed into the spraying hose 20 from the base end of the spraying hose 20. Since the nozzle hole 22 is a long hole, the granular material is ejected downward from the nozzle hole 22 in a flat fan-like ejection shape 28. As a result, each nozzle hole 22
Each spray area 30 corresponding to the spray hose 20
The spray area 30 has a narrow band shape that is inclined by θ with respect to the longitudinal direction of the spray hose 20, and the length of the spray area 30 directly below the spray hose 20 in the traveling direction 19 is approximately equal in the longitudinal direction of the spray hose 20. In addition, each direct-below dispersion region 30 only slightly overlaps the nozzle hole 22 in the longitudinal direction. In FIG. 2, A indicates a portion where the powder and granular material is scattered at a low density, and B indicates a portion where the powder and granular material is distributed at a high density. The spreading density of the powder in the passing spreading area 32 that occurs as the spreading hose 20 moves in the traveling direction 19 is equal except for the overlapping portion of the spreading area 30 immediately below. In addition, the direct distribution area 3
Since the length C of the overlapping portion in the traveling direction 19 is short, the dispersion density of the powder and granular material in the overlapping portion of 0 is also suppressed to a slight increase compared to the dispersion density in other portions. 3a to 3c show various examples of the shapes of the nozzle holes 22. FIG. All of the nozzle holes 22 are formed in the shape of a long hole, but the nozzle hole 22a is formed into a strip of equal width with arcuate ends, the nozzle hole 22b is elliptical, and the nozzle hole 22c is rectangular.

4a to 4c show various ways of fixing the reinforcing sheathing piece 24 to the spray hose 20. FIG. Fourth
In Figure a, the reinforcing covering piece 24 is fixed to the nozzle hole 22 by welding. In Fig. 4b, reinforcing covering piece 2
4b includes a female part 34 that is applied to the inner surface of the spray hose 20, and a male part 36 that defines the nozzle hole 22 inside and is pushed into the spray hose 20 from the outer surface of the spray hose 20. Locking protrusion 38
is formed at the tip of the male side part 36, and the female side part 3
After the male side part 36 is fitted to the female side part 34, it is locked to the female side part 34 by elastic restoring force. In FIG. 4c, the female part 34 and the male part 36 are connected to the spray hose 20.
Ribs 40 and 42 are respectively formed on the contact surface side, and the strength is increased by the ribs 40 and 42, and the spraying hose 20 is strongly clamped and locked by the ribs 40 and 42.

[Effect of idea]

Thus, according to this invention, the nozzle hole drilled in the cylindrical body for spouting the powder is formed as a long hole that is appropriately inclined with respect to the longitudinal direction of the spray hose nozzle head. The shape of the nozzle hole can be maintained by the reinforcing covering 15 against the tensile force acting in the length direction of the spray hose nozzle. The lengths of the directly below spraying areas are approximately equal in the longitudinal direction of the spraying hose nozzle, and it is possible to prevent the problem of high scattering density of powder and granular material at the center of each directly below spraying area. Furthermore, since the length C in the direction in which the spraying hose nozzle head advances is small in the overlapping portion between adjacent spray areas directly below each nozzle hole, an increase in the dispersion density of the powder or granular material in the overlapping portion is suppressed. In this way, the dispersion density of powder and granules is made uniform, and the harmful effects of phytotoxicity due to the dispersion of high-density powder and granules can be prevented, and the amount of powder and granules to be sprayed can be reduced, increasing economic efficiency. .

Furthermore, by attaching a reinforcing covering piece, the durability against wear and tear on the nozzle hole rim due to the spouting of powder and granules is increased, and by the same method as heavy plows buried around the nozzle hole periphery of the spray hose nozzle head, the nozzle nozzle during spraying Shows the effect of making the hole face the ground. In addition, by fitting the reinforcing covering piece to the nozzle hole, it can be easily replaced when the reinforcing covering piece is worn out due to the spouting of powder and granules. can be extended.

[Brief explanation of the drawing]

Figures 1 to 4 relate to embodiments of this invention; Figure 1 is a view showing the side of the spraying hose on the nozzle hole side;
Figure 2 is a diagram showing the state of dispersion of powder and granules from the nozzle hole;
FIGS. 3a to 3c are views showing various examples of the shapes of the nozzle holes, FIGS. 4a to 4c are views showing various ways of fixing the reinforcing covering piece to the spray hose 20, and FIGS. 5 and 6. 5 relates to a conventional spraying hose nozzle head, FIG. 5 is a diagram showing the shape of the nozzle hole of the spraying hose, and FIG. 6 is a diagram showing the state of dispersing powder and granules from the nozzle hole of the spraying hose. 20... Spraying hose, 22, 22a, 22b,
22c... Nozzle hole, 24, 24b... Reinforcing covering piece.

Claims (1)

[Scope of utility model registration request] In a spraying hose nozzle head formed by drilling a large number of nozzle holes 22, 22a, 22b, 22c at appropriate intervals in the longitudinal direction of this spraying hose 20 on the side surface of a long spraying hose 20 formed of a flexible material, The nozzle holes 22, 22a, 22b, 22c are formed as elongated holes extending in directions inclined at appropriate angles with respect to the longitudinal direction of the spray hose 20, and the outsides of these nozzle holes 22, 22a, 22b, 22c are A spraying hose nozzle head comprising a reinforcing covering piece 24 having an elongated hole that matches the elongated hole.