JPS5832757Y2 - Chemical spray nozzle - Google Patents

Description

[Detailed description of the invention] This invention relates to the improvement of a chemical spray nozzle, mainly a nozzle (-famous curved surface nozzle) that is set on a tractor and is used to uniformly spray herbicides.

This type of nozzle has a horizontal groove-shaped notch formed on the circumferential side, and the chemical liquid injected from the nozzle hole in the center of the base side does not touch the sloped back wall of the notch, so it is difficult to prevent the chemical solution from touching the sloped back wall of the notch. After passing through a transition surface, it spreads along the earthen wall in late autumn parallel to the earthen wall.

By the way, this type of conventional nozzle is made of a material such as brass and has a short shaft shape, and has a horizontal groove-shaped notch formed on its circumferential surface, and has a nozzle opening in the notch on the base end side, so that the chemical solution can be sprayed. Since the ejection pressure is high, the nozzle hole is worn out and the diameter becomes large, which has the disadvantage that it becomes unusable at an early stage.

This invention solves the above-mentioned conventional drawbacks.

Embodiments of this invention will be described below with reference to the accompanying drawings.

In FIGS. 1 and 2, A is a chemical liquid spraying nozzle, 1 is a nozzle body, and 2 is an orifice loaded in the nozzle body.

The nozzle body 1 is a molded plastic product, has a short shaft shape, and has a flange 3 formed at the base end thereof, on which a cap nut (not shown) of the nozzle mouthpiece of the dispersion rod is attached.

A transverse groove-shaped notch 4 whose depth reaches the axial center is formed on the circumferential surface of the nozzle body 1, and a deep wall a in this notch is formed.
intersects the axis of the main body 1 at the center, and is sloped so that the earthen wall side becomes shallower, and the upper part of the back wall forms a curved surface C that transitions to the earthen wall with a gentle curvature.

An orifice loading recess 5 is formed on the end face of the nozzle body on the side where the flange 3 is present, and a window hole 6 communicating with the horizontal groove-shaped notch 4 is formed in the center of the recess.

The orifice 2 is made of a wear-resistant material such as stainless steel and has a disk shape, and has a nozzle hole 7 in its center.

The illustrated orifice has a disk portion that bulges out in a hemispherical shape on one side except for the periphery, and a concave portion within the bulged portion guides the pumped liquid toward the nozzle hole 7, collides with it, and diffuses it from the nozzle hole.

A series of plates 8 made of wear-resistant metal such as stainless steel are laminated on the surface of these walls extending from the inner wall a to the upper wall in the horizontal groove-shaped notch 4 of the nozzle body 1, as shown in FIG. has been done.

The lamination is particularly inserted into the molding of the nozzle body 1 since it is made of plastic.

Reference numeral 9 denotes a claw-like protrusion formed on the plate body 8 for fixing the stack.

3 and 4 show the other side of the nozzle, and this nozzle A-,
The horizontal groove-shaped notch 4a of the nozzle body 1a is obliquely cut, and accordingly, the nozzle hole 7a of the orifice 2a is also oriented perpendicular to the upper wall of the notch.

This nozzle has the structure described above, and the nozzle has an orifice in which the nozzle hole 7 is formed in the center of a disk made of a wear-resistant material, which is separate from the nozzle body.
The degree of wear of the nozzle hole is extremely low, and the manufacturing of the nozzle is much easier than conventional ones, resulting in lower cost.Furthermore, the jet flow rate can be easily changed by replacing the orifice with a different nozzle diameter. can be adjusted to

In addition, this nozzle has wear-resistant metal plates laminated on the surface from the back wall of the horizontal groove-shaped notch of the nozzle body to the earthen wall, so even though the nozzle body is made of plastic, most of the wear occurs in this part. This has the advantage that it can withstand long-term use and can be made at extremely low cost.

[Brief explanation of the drawing]

1 and 3 are front views of each side of the nozzle of the present invention, FIGS. 2 and 4 are longitudinal sectional side views of the same, and FIG. 5 is a perspective view of only the laminated wear-resistant metal plates. A, A-,... Nozzle, 1, 1a...
Nozzle body, 4゜4a...Horizontal groove type notch, a.
...Back wall, b...Top wall, C...
Curved surface, 5... Concavity, 6... Window hole, 2,
2a... Onofisu, 7,7 a...
Nozzle hole, 8... Laminated metal plate.

Claims (1)

[Scope of utility model registration request] Consisting of a nozzle body and an orifice, the nozzle body is a plastic molded product, has a short shaft shape, and has a transverse groove-shaped notch on the circumferential surface that reaches the axial center, and the back wall inside the notch is shaped like a short axis. Intersecting the axis at the center, the earth wall side is shallowly sloped, and the upper part of the back wall has a gentle curve that transitions to the earth wall. A window hole communicating with the inside of the horizontal groove-shaped notch is formed in the center of the recess, and the orifice has a disk shape made of a wear-resistant material and has a nozzle hole in the center thereof. A chemical liquid spraying nozzle characterized by having wear-resistant metal plates laminated on the surface from the back wall to the earthen wall in the horizontal groove-shaped notch of the main body.