JPH0728155Y2 - Liquid filling nozzle - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid filling nozzle used for filling a container with a liquid such as a fluid food.

[0002]

2. Description of the Related Art As a conventional liquid filling nozzle, for example, as disclosed in Japanese Examined Patent Publication No. 59-26550, the lower end opening of the nozzle body is gravitated by the surface tension of the liquid in the filling nozzle body. A plurality of wire netting perforated plates that prevent flow-down due to the same are installed so that they are adjacent to each other and directly overlap each other.The holes of the perforated plate are formed by a plurality of vertical and horizontal wires braided with a wire net, and vertical and horizontal wires are , Those that overlap at each intersection are known.

[0003]

In the nozzle described above, pulp or fibrous material mixed in the filling liquid is caught or caught in the overlapping portions of the wires. for that reason,
When cleaning and sterilizing the nozzle, it is extremely difficult to remove it, and the cleaning and sterilizing property is poor.

The reason for using a plurality of perforated plates in the nozzle is to enhance the effect of surface tension. The effect of surface tension depends not only on the size of the holes in the perforated plate but also on the gap between adjacent perforated plates.

When the perforated plate is a wire mesh, the wire mesh has a portion where the vertical and horizontal wires overlap and a portion where there is no wire overlap. Therefore, when the wire meshes are directly overlapped with each other, a gap formed between the overlapped wire meshes is It was determined by the thickness, and it was difficult to form a desired gap, and the surface tension of the perforated plate could not be effectively exhibited.

The object of the present invention is to solve the above problems,
It is an object of the present invention to provide a liquid filling nozzle that has good cleaning properties for a perforated plate and that can effectively exert the surface tension of the perforated plate.

[0007]

A liquid filling nozzle according to the present invention is disposed in a tubular nozzle body and vertically adjacent to a lower end opening of the tubular nozzle body, and the surface tension of the liquid in the nozzle body causes the liquid weight to be self-weighted. In a liquid filling nozzle provided with a plurality of perforated plates that prevent the flow down due to, the holes of the perforated plate are formed by a plurality of vertical line parts and horizontal line parts, and the vertical line parts and the horizontal line parts overlap at each intersection. They are integrally connected so that they do not match, and an annular spacer is interposed between the peripheral portions of adjacent porous plates.

[0008]

In the liquid filling nozzle according to the present invention, the holes of the perforated plate are formed by a plurality of vertical line portions and horizontal line portions, and the vertical line portions and horizontal line portions are integrally connected so that they do not overlap at each intersection. Therefore, there is no risk that the pulp or fibrous matter mixed in the filling liquid will be caught or caught at the intersection of the vertical line part and the horizontal line part, and the upper and lower surfaces of the perforated plate are flat. .

Further, since the annular spacer is interposed between the peripheral portions of the adjacent porous plates, the gap between the adjacent porous plates is determined by the thickness of the spacer.

[0010]

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

As shown in FIG. 1, the liquid filling device is connected to a filling liquid tank (not shown) via a connecting pipe (11) and has a filling cylinder (14) provided with check valves (12) (13) at the top and bottom. ) And a metering cylinder (17) which is connected to the filling cylinder (14) at the middle of the height via a connecting pipe (15) and has a piston (16) built therein.
And the filling nozzle (1
8) and.

Of the constituent members of the above-described filling device, those other than the filling nozzle (18) are well known, and the description thereof will be omitted.

The filling nozzle (18) is a cylindrical nozzle body (21).
And four perforated plates (41) which cover the lower end opening of the perforated plate and are arranged at intervals in the vertical direction, and these perforated plates (41) are detachably attached to the lower end of the nozzle body (21). It is composed of a tubular mounting member (23).

The nozzle body (21) comprises an upper large-diameter portion (31) and a lower small-diameter portion (32) having substantially the same diameter as the filling cylinder (14). A flange (33) is provided on the outer surface of the upper end of the upper large-diameter portion (31), and the flange (35) of the flanged nut (34) is hooked from below to the nut (34) so that the filling cylinder (34) is The nozzle body (21) is connected to the filling cylinder (14) by being screwed into the male screw (36) formed on the outer surface of the (14). A male screw (37) is formed in the middle of the outer surface of the lower small diameter portion (31).

An annular spacer (42) is interposed between the peripheral edges of two adjacent four perforated plates (41).

The mounting member (23) has an inner surface that substantially matches the outer surface of the lower small diameter portion (32) of the nozzle body (21), and has an internal thread (51) formed at its upper end and its lower end. An inward facing collar (52) is formed. Then, the four perforated plates (41) are placed on the collar (52) together with the spacer (42), and the female screw (51) is screwed into the male screw (37) of the lower small diameter portion (32) to form the perforated plate. The peripheral portion of (41) is sandwiched by the lower small diameter portion (32) and the collar (52) from above and below together with the spacer (42).

As shown in FIGS. 2 and 3, the perforated plate (41) has a circular contour matching the peripheral surface of the lower end opening of the nozzle body (21), and has a plurality of vertical line portions (41a). ) And a horizontal line portion (41b), and a large number of holes are formed between them,
It is as if it were a grid-like wire mesh, but with reference to FIG. 4, the vertical line part (41a) and the horizontal line part (41b)
, Are integrally connected so that they do not overlap at each intersection.

A perforated plate (41) is obtained by etching a stainless plate having a required thickness.

The shape of the perforated plate (41) is shown by giving specific numbers as an example. The plate thickness (T) is 0.3 to 1.0 mm. If it is thinner than this, the strength is insufficient, and if it is thick, the etching process becomes difficult. Since the size of the hole is restricted by the convenience of the etching process, the minimum of one side (L) of which is the plate thickness (T) multiplied by 0.8. That is,
If the plate thickness (T) is 0.5 mm, the hole size is 0.4 ×
When the thickness is 0.4 mm and the plate thickness (T) is 1.0 mm, the minimum hole size is 0.8 × 0.8 mm. The width (W) of the vertical line portion (41a) and the horizontal line portion (41b) is set to a minimum of 0.1 mm for the convenience of the etching process. Therefore, the pitch (P) of the holes is the size of one side of the holes (L). ) Plus 0.1 mm is the minimum.

Here, the porosity of the perforated plate is defined as follows, and specific numbers are obtained for some examples of the perforated plate.

Porosity (Q) = (total volume of perforated plate holes only / total volume including perforated plate holes) × 100 (%) = [L ² · T / (L + W) ² · T] × 100 (%) First, the plate thickness (T) is 0.5 mm, and the size of one side of the hole is 0.
4 mm, and the width (W) of the straight line that divides the pores is 0.1 mm, the porosity (Q) = [0.4 ² × 0.5 / (0.4 + 0.1) ² × 0.5] × 100 (%) = 64 (% ).

When the plate thickness (T) is 1.0 mm, the size of one side of the hole is 0.8 mm, and the width (W) of the straight line that defines the hole is 0.1 mm, the porosity (Q) = [0.8 ² X1.0 / (0.8 + 0.1) ² x1.0] x100 (%) = 79 (%).

Here, for reference, the porosity of a conventionally used wire mesh is calculated. When the wire diameter is 0.4 mm and the wire mesh is 20 mesh, the porosity is 47.
%, A wire mesh having a wire diameter of 0.25 mm and a 40 mesh wire mesh has a porosity of 37%.

In the above embodiment, four perforated plates (41) are shown, but the number is not limited to this, and the number is from 2 to 2.
Up to about 6 can be put to practical use.

Multiple perforated plates of one type having the same porosity
Since (41) may be used, a plurality of types of perforated plates (41) having different porosities may be used.

The shape of the holes of the perforated plate (41) may be circular, triangular or hexagonal as shown in FIGS. 5 (a) (b) (c), in addition to the square. .

The spacer (42) is made of stainless steel, which is the same material as the porous plate (41). As shown in Figure 6, thickness (t1) (t2)
Plural kinds of spacers (41) having different (t3) are prepared, and the spacer (41) corresponding to the required surface tension is selectively used. The thickness (t1) (t2) (t3) of the spacer (42) is, for example, 0.3, 0.5, or 1.0 mm.

Further, as shown in FIG. 7, a spacer (42) may be integrally formed on the peripheral edge of the perforated plate (41).

[0029]

EFFECTS OF THE INVENTION According to the present invention, there is no fear that pulp or fibrous matter mixed in the filling liquid will be caught or caught at the intersection of the vertical line portion and the horizontal line portion. The cleaning and sterilizing properties of are extremely good.

In addition, since the gap between adjacent porous plates is determined by the thickness of the spacers in combination with the flatness of the upper and lower surfaces of the porous plate, the gap can be set to a desired size. The surface tension of can be effectively exhibited.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a filling nozzle according to the present invention.

FIG. 2 is a side view of a perforated plate used in the nozzle.

FIG. 3 is a plan view of the porous plate.

FIG. 4 is a perspective view showing a part of FIG. 3 in an enlarged manner.

FIG. 5 is a partial plan view showing a modified example of a perforated plate.

FIG. 6 is an explanatory diagram showing types of spacers used in the nozzle.

FIG. 7 is a perspective view showing a modified example of a perforated plate and a spacer.

[Explanation of symbols]

 (18) Filling nozzle (21) Nozzle body (41) Perforated plate (41a) Vertical line (41b) Horizontal line (42) Spacer

Claims (1)

[Scope of utility model registration request] 1. A cylindrical nozzle body (21) and a plurality of nozzle nozzles (21) arranged vertically adjacent to each other in a lower end opening of the cylindrical nozzle body (21) to prevent the liquid from flowing down by its own weight due to the surface tension of the liquid in the nozzle body (21). In the liquid filling nozzle provided with the perforated plate (41), the holes of the perforated plate (41) have a plurality of vertical line portions (41a) and horizontal line portions (4a).
1b), the vertical line part (41a) and the horizontal line part (41b)
The liquid filling nozzles are integrally connected so that they do not overlap at each intersection, and an annular spacer (42) is interposed between the peripheral portions of the adjacent porous plates (41).