JPH0441968Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial field of application] This invention is installed in the ohm tube of a speed sprayer used in orchards (usually 24
~28 units).

[Conventional technology]

A conventional nozzle device of this type will be described with reference to Utility Model Application No. 1983-78456, shown in FIGS. 4 to 8. Fourth
The figure is a vertical side view, Figure 5 is an exploded external view of Figure 4, Figure 6 is a view of the nozzle base in Figure 5 viewed from below,
FIG. 7 is a front view showing the state attached to the ohmic tube, and FIG. 8 is a partial side view taken along the line - in FIG. 7. In the figure, (A) is an ohmic tube of a speed sprayer (not shown), and (1) is a nozzle base attached to the ohmic tube (A), which has a circumferential groove 2 on the outer circumferential surface of its connecting cylinder portion 1a. There is. 3, 3 is the circumferential groove 2
A portion of a stop pin, which will be described later, is engaged with recesses provided on two sides at 180 degrees. 4
is a substantially T-shaped nozzle movable body having three ports opening on three sides of a substantially T-shape, one of which is a circular diffusion jet port 5 and the other port is a fan-shaped diffusion jet port 6. At the same time, the remaining one port is provided as a mounting port 7 which can be rotatably fitted into the connecting cylinder portion 1a of the nozzle base 1. The circular diffusion injection port 5 is composed of a spray plate 5a, a cap 5b for attaching the spray plate 5a, a bulb seat 5c, and the like. The fan-shaped diffusion injection port 6 is composed of a flat spray plate 6a, a cap 6b for attaching the flat spray plate 6a, a valve seat 6c, and the like. Reference numeral 8 denotes a valve chamber formed inside the nozzle movable body 4, and a valve seat 5c of the circular diffusion nozzle 5 and a fan-shaped diffusion nozzle 6 are located at both ends.
A valve seat 6c is provided. 9 is a valve ball that is movably inserted into the valve chamber 8, 10 is a communication hole provided in the wall of the valve chamber 8, and 11 is a stop pin provided at the mounting port 7 of the nozzle movable body 4. Two of them are provided at the two locations where they were located, and they are movable into the circumferential groove 2. A spring 12 is inserted between the nozzle base 1 and the nozzle movable body 4, and acts in a direction to engage the stop pin 11 with the recess 3.

Next, the operation will be explained. FIG. 4 is a vertical sectional side view of what is indicated by the reference numeral 1 in FIG. 7, viewed from the right.

As shown in FIGS. 4 to 6, when the nozzle movable body 4 is set with the circular diffusion nozzle 5 facing upward,
Since the valve ball 9 descends and rests on the valve seat 6c, the chemical solution that is force-fed to the nozzle base 1 in the direction of the arrow 13 passes through the communication hole 10 and enters the circular diffusion nozzle 5 side, where it is circularly diffused. In this state, pressure is applied to the valve ball 9, so that the valve ball 9 does not lift up from the valve seat 6c, and since the spring 12 is acting on the nozzle movable body 4, the stop pin 11 is moved into the recess 3.
It will not come off and move within the circumferential groove 2. Therefore, the nozzle movable body 4 does not rotate relative to the nozzle base 1, and the nozzle movable body 4 does not easily move from the nozzle base 1 even due to vibrations, and is firmly fixed at the illustrated position.

And when changing the spray pattern,
After pushing the nozzle movable body 4 toward the nozzle base 1 side against the spring 12 to remove the stop pin 11 from the recess 3, the nozzle movable body 4 is rotated 180 degrees to release the nozzle movable body 4, and as shown in FIGS. In FIG. 6, when the nozzle movable body 4 is turned upside down, the stop pin 11 is similarly fixed at a position where it is engaged with the recess 3 by the force of the spring 12. At this time, although not shown, the valve ball 9 descends and rests on the valve seat 5c, so that the chemical liquid enters the side of the fan-shaped diffusion injection port 6 and is diffused in a fan-shaped manner.

[Problem that the invention attempts to solve]

In the conventional nozzle device as described above, when no pressure is applied to the valve ball 9 by the chemical liquid (when stopped), the valve ball 9 may fall within the valve chamber 8 due to its own weight. There is no problem if the desired injection direction (outward with respect to the ohmic tube (A)) is upward as shown by n, but as shown by the symbols a, b, p, and q in Fig. 7. In the case of use where the desired injection direction is downward as shown in FIG. 4, the valve ball 9 must be attracted to the upper valve seat 5c in FIG. If a stoppage occurs during spraying, the pressure from the chemical solution is no longer applied to the valve ball 9, and the valve ball 9 falls due to its own weight. When spraying starts, the valve ball 9 is pressed against the valve seat 6c while falling as shown in FIG. 4, and the spraying direction changes upward.
There was a problem that the desired spraying could not be done continuously.

This invention was made to solve this problem, and by pressing the valve ball with a spring, the spraying direction set by the nozzle movable body can be set without being affected by the usage conditions, and the spraying direction can be stopped mid-spraying. To obtain a nozzle device which is highly reliable and can be obtained at low cost.

[Means for solving problems]

The nozzle device according to this invention has a vertical hole provided from the base to the vicinity of the tip, and a valve chamber and opening that communicate with the vicinity of the tip of the hole and open on both sides in the horizontal hole manner. a base body, a nozzle movable body mounted on the tip of the nozzle base body so as to be able to rotate about the base body; and a nozzle movable body mounted on the tip of the nozzle base body so as to be able to rotate about the nozzle base body, and the nozzle mouth movable body so as to fit into the valve chamber and the opening, respectively, while the nozzle movable body is rotating. A plurality of injection ports each provided on a movable body and having different spray patterns, a valve ball inserted into the valve chamber, and a spring that presses the valve ball outward so that one of the injection ports is closed. It is something that

[Effect]

In this device, when the nozzle movable body is set to the nozzle base, the valve ball closes one of the nozzles and the other nozzle is opened through the opening, and thus the nozzle movable body By rotating and setting the valve, one of the nozzles is opened so that different spray patterns can be diffused, and the valve ball closes the nozzle while being pressed by the spring.

[Example of idea]

An embodiment of this invention will be described below with reference to FIGS. 1 to 3. Fig. 1 is a vertical sectional side view, Fig. 2 is an external view of Fig. 1, and Fig. 3 is a partially exploded side view of Fig. 2. Parts that are the same as or equivalent to the conventional device described above are denoted by the same reference numerals. will be added and the explanation will be omitted.
In the figure, 1A is a nozzle base, which has a hole 101 provided vertically from the base to the vicinity of the tip, and a valve chamber 102 that communicates with the vicinity of the tip of this hole 101 and opens on both sides in a horizontal hole manner. 103. 4A is a nozzle movable body, and nozzle base 1A
The hole 401 is fitted into the tip protrusion 104 of the nozzle base 1.
It is rotatably inserted into the outer peripheral surface of the tip of A. 1
A spring 4 presses the valve ball 9 outward so that the valve seat 5c or 6c is closed.

As shown in Fig. 1 and Fig. 2, the circular diffusion injection port 5
is attached to the ohmic tube A in a state where the
When the downward circular diffusion injection port 5 is in the desired injection direction, the valve ball 9 is pressed against the valve seat 6c by the spring 14, so that the fan-shaped diffusion injection port 6 side is closed. Therefore, in this state, the chemical liquid that is force-fed into the hole 101 of the nozzle base 1A in the direction of the arrow 13 enters the valve chamber 102 from the hole 101 and enters the opening 10.
3 and enters the circular diffusion injection port 5 side where it is circularly diffused. At this time, the valve ball 9 is pressed against the valve seat 6c by the spring 14, so even if a stop occurs during spraying and no pressure is applied to the valve ball 9 by the chemical liquid, the valve ball 9 will move away from the valve seat 6c. I'll never leave you. In other words, the valve ball 9 is pressed by the spring 14 and operates regardless of the mounting angle of the nozzle base 1A. Therefore, the spout movable body 4A
When the circular diffusion injection port 5 is set upward by turning, the valve ball 9 closes the valve seat 5c.

In the above embodiment, the nozzle movable body 4A is provided with a circular diffusion nozzle 5 and a fan-shaped diffusion nozzle 6, but any nozzles with different spray patterns may be used, and the number is not limited to two, for example. Even 4 pieces is fine.

[Effect of idea]

As described above, according to this invention, by pressing the valve ball with a spring, the spraying direction set by the setting of the nozzle movable body remains unchanged even if there is a stop during spraying, without being affected by the operating conditions. The effect is that highly reliable products can be obtained at low cost.

[Brief explanation of the drawing]

Figure 1 is a longitudinal side view showing one embodiment of this invention, Figure 2 is an external view of Figure 1, Figure 3 is a partially exploded side view of Figure 2, and Figure 4 is a conventional one. Fig. 5 is an exploded external view of Fig. 4, Fig. 6 is a view of the nozzle base in Fig. 5 viewed from below,
FIG. 7 is a front view showing the state attached to the ohmic tube, and FIG. 8 is a partial side view taken along the line - in FIG. 7. In the figure, 1A is the nozzle base, 101 is the hole, 1
02 is a valve chamber, 103 is an opening, 4A is a nozzle movable body,
5 is a circular diffusion injection port, 6 is a fan-shaped diffusion injection port, 9 is a valve ball, and 14 is a spring. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] A nozzle base having a hole provided in a vertical manner from the base to the vicinity of the tip, and a valve chamber and an opening communicating with the vicinity of the tip of the hole and opening on both sides in the form of a horizontal hole; a tip of the nozzle base; a nozzle movable body mounted on the nozzle movable body so as to be rotatable about the nozzle movable body, and a spray pattern provided on the nozzle movable body such that the nozzle movable body can match the valve chamber and the opening, respectively, while the nozzle movable body is rotating; the nozzle movable body relative to the nozzle base; a plurality of nozzle openings with different diameters; a valve ball inserted into the valve chamber; and a spring that presses the valve ball outward so that one of the nozzle openings is closed; when the valve ball is set, the valve ball closes one of the nozzles so that the other one of the nozzles is opened through the opening;
The nozzle device is characterized in that by rotating and setting the nozzle movable body in this manner, one of the nozzles is opened and a different spray pattern can be diffused.