JPH0929140A - Nozzle for filling liquid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a nozzle less apt to generate bubbles at the time of filling a liquid. SOLUTION: A valve body 4 capable of controlling the opening area of a discharging opening 2 and freely opening and closing is arranged inside a cylindrical nozzle body 3, in which the discharging opening 2 for a liquid is formed, a flow straightening member 6 is mounted to the discharging opening 2 and the flow straightening member 6 is composed of plural concentrically arranged annular plates 12 and a corrugated plate 14 arranged in waved state in an annular space part 13 formed between annular plates 12, 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid filling nozzle.

[0002]

2. Description of the Related Art Conventionally, when a large amount of liquid is filled in a predetermined container, a liquid filling nozzle 51 as shown in FIG. 4 is used. The nozzle 51 is movably provided in the nozzle main body 53 via a stem 54 and a cylindrical nozzle main body 53 having a discharge opening 52 of a predetermined diameter formed at the lower end to open and close the discharge opening 52. And a cylindrical valve body 55 adapted to adjust the discharge flow rate in two steps, large and small.

With such a filling nozzle,
When filling a large amount of liquid into a container and preventing the filled liquid from foaming, first move the valve body 55 to the small amount filling position (shown by the phantom line) to fill the liquid with a small amount. Then, on the way, the mass filling position (shown by the solid line) is switched to discharge a large amount of liquid, and finally, the position of the valve body 55 is returned to the small quantity filling position again, and filling is performed for a long time. It was Also, during filling,
In order to further reduce the bubbling of the liquid surface, the height of the nozzle body 53 is made to follow the height of the liquid surface.

[0004]

However, as described above, even when the filling amount is adjusted and the nozzle body is made to follow the liquid surface, the generated bubbles cannot be reduced so much, and the filling amount is also reduced. When adjusting, the time required for the last small amount filling is long, and this small amount filling time has a delicate effect on foaming, which makes the filling operation very difficult.

Although it is conceivable to attach a perforated plate to the tip of the nozzle body 53, when it is actually attached, its effect is hardly seen, and conversely, due to the reduction of the opening area,
The filling capacity has decreased.

Therefore, an object of the present invention is to provide a liquid filling nozzle which can solve the above problems.

[0007]

In order to solve the above-mentioned problems, the liquid filling nozzle of the present invention can adjust the opening area of the above-mentioned discharge port inside the cylindrical body in which the liquid discharge port is formed. A valve body that can be opened and closed together is arranged, a rectifying member is attached to the discharge port, and the rectifying member is provided with a plurality of concentric annular plates and an annular space formed between these annular plates. And a corrugated plate arranged in a wavy manner in the section.

According to the above construction, the flow of the liquid discharged from the discharge port of the nozzle body is regulated by the rectifying member attached to the discharge port, so that the generation of bubbles is greatly suppressed.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a liquid filling nozzle according to the present invention will be described below with reference to FIGS.

In FIG. 1, reference numeral 1 denotes a liquid filling nozzle according to the present embodiment, which is provided inside a cylindrical nozzle body (cylindrical body) 3 having a liquid discharge port 2 formed on one end side. The valve body 4 which can adjust the opening area of 2 and can be opened and closed,
The stem 5 is provided so as to be movable in the axial direction of the nozzle body 3, and a rectifying member 6 is detachably attached to a discharge port 2 portion of the nozzle body 3 via a holding member 7.

As shown in FIGS. 1 to 3, the rectifying member 6 has a cylindrical frame body 11 which can be held by a ring-shaped holding member 7, and a concentric shape inside the frame body 11. A plurality of thin annular plates 12 arranged and each of these annular plates 1
It is composed of a thin corrugated plate 14 arranged in a corrugated manner in an annular space 13 formed between Nos. 2 and 12.

The annular plate 12 and the corrugated plate 14 are used.
As the material of, for example, titanium is used,
Both of the thicknesses are, for example, about 50 μm, and the size of the cell a partitioned by each annular plate 12 and the corrugated plate 14 is, for example, 100 cells / in ² .

Using such a liquid filling nozzle 1,
When the container is filled with the liquid, at the time of the first small amount filling (when the valve body 4 is at the phantom line position), the flow regulating member 6
As a result, the tip of the liquid discharged from the nozzle body 3 is collected, the generated bubbles are extremely small, and the range where the liquid surface is directly hit is narrowed.

Then, the valve body 4 is moved to the position indicated by the solid line on the way to switch to the large-volume filling.
As a result, the flow of the liquid is rectified and not disturbed, so that the liquid level of the filling liquid is small and the filling can be continued in a stable state.

Further, as the filling progresses, the bubbles on the filling liquid level decrease, and when the filling is completed, the bubbles decrease so that the liquid level can be seen. As described above, since the plate-shaped flow regulating member does not generate much bubbles during liquid filling, the liquid filling operation can be performed easily and quickly.

The discharge state of the liquid in FIG. 1 is shown when the small amount is filled on the right side and when the large amount is filled on the left side. In addition, since the thickness of the annular plate 12 and the corrugated plate 14 forming the rectifying member 6 is extremely thin (50 μm) (extremely thin), the liquid filling ability is not adversely affected.

[0017]

As described above, according to the liquid filling nozzle of the present invention, the liquid discharged from the discharge port of the nozzle body is distributed between the plurality of annular plates and the annular space formed between these annular plates. The flow is regulated by the rectifying member composed of the corrugated plates arranged, so that the generation of bubbles is greatly suppressed, and therefore the liquid can be easily and quickly filled.

[Brief description of drawings]

FIG. 1 is a sectional view of a liquid filling nozzle according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a rectifying member in the liquid filling nozzle.

FIG. 3 is a view as viewed in the direction of arrows AA in FIG. 2;

FIG. 4 is a cross-sectional view of a liquid filling nozzle in a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Liquid filling nozzle 2 Discharge port 3 Nozzle body 4 Valve body 6 Rectifying member 11 Frame body 12 Annular plate 13 Annular space portion 14 Corrugated plate

Claims (1)

[Claims] 1. A valve body, which can adjust the opening area of the discharge port and which can be opened and closed, is arranged inside a tubular body having a liquid discharge port, and a rectifying member is attached to the discharge port. Further, the rectifying member is composed of a plurality of concentric annular plates and a corrugated plate corrugated in an annular space formed between the annular plates. Filling nozzle.