JPS6227242Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to the improvement of a nozzle for spraying chemical solutions such as agricultural chemicals, and it is possible to improve the spraying efficiency by generating a mist with relatively large particles and less scattering. It has been made possible.

Next, an embodiment of this invention shown in the drawings will be described.

In FIG. 1, reference numeral 1 denotes a base having an inlet 2 and an outlet 3, a cylindrical piece 4 having the inlet 2, a cylindrical body 5 into which the cylindrical piece 4 is screwed and having the outlet 3,
Of the chambers 8 and 9 in front and rear of the orifice 7 formed by the orifice forming member 6 of the base 1, which comprises an orifice forming member 6 screwed to the cylinder piece 4, the chamber 8 is connected to the inlet 2. An air intake port 10 provided in the cylindrical body 5 opens into the chamber 9, and cooperates with the orifice 7 to function as an ejector, which will be described later.

An injection guide 11 is formed in the cylindrical body 5 facing the orifice 7 toward the outlet 3, and a nozzle pipe 12 is screwed to the end of the cylindrical body 5 on the outlet 3 side. A predetermined number of discharge nozzles 13 are formed at appropriate intervals in this nozzle pipe 12, and each discharge nozzle 13 has a spray nozzle 14.
A core 15 for generating a vortex flow is housed in the front part of the core 15. The nozzle pipe 12 may have a straight pipe shape as shown in FIG. 2, or a loop shape as shown in FIG. 3, which may be selected depending on the intended use.

In the above configuration, a chemical liquid (including a foaming agent) pumped from a chemical liquid supply source (not shown) enters the chamber 8 from the inlet 2, is injected from the orifice 7,
It is sent into the injection guide 11. At this time, negative pressure is generated in the chamber 9, air is sucked in through the air intake port 10 by the action of the ejector, and the sucked air and chemical solution are mixed in the chamber 16 in the nozzle pipe 12, and each When passing through the core 15 at the nozzle part 13, a vortex is generated and a mist is ejected from the nozzle 14, but since this mist is mixed with air,
Many air bubbles are present (due to surface tension, etc.)
The particles are relatively large and there are few fine particles, resulting in fog with little scattering. Therefore, it is possible to perform work with high spraying efficiency without wasting unnecessary spraying.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a main part of an embodiment of this invention, and FIGS. 2 and 3 are reduced perspective views showing two types of shapes of the nozzle pipe. In the figure, 1... base, 2... entrance, 3
... Outlet, 5 ... Cylindrical body, 7 ... Orifice,
8, 9... Chamber, 10... Air intake port, 11... Injection guide, 12... Nozzle pipe, 15... Outlet nozzle section, 14... Spray port, 15... Core, 16
...It's a room.

Claims (1)

[Claims for Utility Model Registration] 1. A negative pressure generating chamber is formed in a base having an inlet connected to a chemical solution supply source, and a cylindrical body forming a part of the base has an opening toward the negative pressure generating chamber. A nozzle comprising an air intake port, a predetermined number of discharge nozzles formed in a nozzle pipe connected to the outlet of the base, and a core for generating a vortex flow provided in the discharge nozzle. 2. The nozzle according to claim 1, wherein an ejector is configured in the negative pressure generating chamber. 3. The nozzle according to claim 1, wherein the nozzle pipe is formed in a straight tube shape. 4. The nozzle according to claim 1, wherein the nozzle pipe is formed in a loop shape.