JPH0568899U - Liquid filling nozzle - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] To improve the cleaning performance of perforated plates. Effectively exert the surface tension of the perforated plate. [Structure] A plurality of perforated plates (41) are vertically adjacent to each other at the lower end opening of the tubular nozzle body (21) to prevent the liquid in the nozzle body (21) from flowing down due to its own weight. Deploy. The holes of the porous plate (41) are formed by a plurality of vertical line portions (41a) and horizontal line portions (41b). The vertical line portion (41a) and the horizontal line portion (41b) are integrally connected so as not to overlap at each intersection. An annular spacer (42) is interposed between the peripheral portions of adjacent porous plates (41).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a liquid filling nozzle used for filling a liquid such as a fluid food into a container.

[0002]

[Prior Art]

 As a conventional liquid filling nozzle, for example, as disclosed in Japanese Examined Patent Publication No. 59-26550, at the lower end opening of the nozzle main body, the surface tension of the liquid in the filling nozzle main body causes the liquid to flow down by gravity. A plurality of wire mesh perforated plates to be prevented 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 woven with a wire mesh, and the vertical and horizontal wires are It is known that they overlap at intersections.

[0003]

[Problems to be solved by the device]

 In the above nozzle, pulp or fibrous material mixed in the filling liquid is caught or caught in the overlapping portion of the wires. Therefore, when cleaning and sterilizing the nozzle, it is extremely difficult to remove it, and the cleaning and sterilizing property is poor.

Further, 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 part where the vertical and horizontal wires overlap and a part where the wire does not overlap. Since the thickness is determined by the thickness, it is difficult to form a desired gap, and the surface tension of the perforated plate cannot be effectively exhibited.

An object of the present invention is to solve the above-mentioned problems, to provide a liquid filling nozzle which has good cleaning properties of a perforated plate and can effectively exert the surface tension of the perforated plate. is there.

[0007]

[Means for Solving the Problems]

 The liquid filling nozzle according to the present invention comprises a cylindrical nozzle body and a plurality of perforated plates arranged vertically adjacent to each other in a lower end opening of the cylindrical nozzle body and for preventing the liquid from flowing down due to its own weight due to surface tension of the liquid. In the liquid filling nozzle including and, the hole of the perforated plate is formed by a plurality of vertical line parts and horizontal line parts, and the vertical line parts and the horizontal line parts are integrally connected so as not to overlap at each intersection. In addition, an annular spacer is interposed between the peripheral portions of the adjacent porous plates.

[0008]

[Action]

 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, at the intersection of the vertical and horizontal lines, there is no risk of the pulp or fibrous matter mixed in the filling liquid being caught or caught, and the top and bottom surfaces of the perforated plate are flat.

Moreover, 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]

【Example】

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

As shown in FIG. 1, the liquid filling device is provided with a filling cylinder (14) which is connected to a filling liquid tank (not shown) through a connecting pipe (11) and which is provided with check valves (12) and (13) at the top and bottom. ), A metering cylinder (17) connected via the connecting pipe (15) in the middle of the height of the filling cylinder (14) and containing a piston (16), and the lower end of the filling cylinder (14). It consists of a filling nozzle (18) connected to.

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

The filling nozzle (18) includes a tubular nozzle body (21), four perforated plates (41) that cover the lower end opening of the tubular nozzle body and are vertically spaced apart from each other, and these perforated plates (41). 41) comprises a tubular mounting member (23) which is detachably mounted on the lower end of the nozzle body (21).

The nozzle body (21) is composed of an upper large diameter portion (31) and a lower small diameter portion (32) which have 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) to fill the filling cylinder. 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 height of the lower small diameter portion (31).

Annular spacers (42) are respectively interposed between the peripheral edges of two adjacent four porous 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 an internal thread (51) is formed at its upper end and its lower end is formed. An inward facing collar (52) is formed. Then, 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 edge of the plate (41) is clamped from above and below by the lower small diameter part (32) and the collar (52) together with the spacer (42).

As shown in FIGS. 2 and 3, the perforated plate (41) has a circular contour that matches 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 part (41b), and a large number of holes are formed between them, and it looks like a grid-like metal mesh when viewed from the front. ) And the horizontal line portion (41b) are integrally connected so as not to 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. The thickness is 3 to 1.0 mm, and if it is thinner than this, strength is insufficient, and if it is thick, etching processing 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 × 0.4 mm, and the plate thickness (T) is 1. With 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 etching, and 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, if the plate thickness (T) is 0.5 mm, the size of one side of the hole is 0.4 mm, and the width (W) of the straight line partitioning the hole 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 determined. When the wire diameter of the wire is 0.4 mm and the wire mesh of 20 mesh has a porosity of 47%, With a wire mesh having an ear wire diameter of 0.25 mm and 40 mesh, the porosity is 37%.

In the above-mentioned embodiment, four perforated plates (41) are shown, but the number is not limited to this, and the number can be practically used up to about 2 to 6.

A plurality of types of perforated plates (41) having the same porosity may be used, and a plurality of types of perforated plates (41) having different porosities may be used.

The shape of the holes of the perforated plate (41) is not limited to a square shape, but is a circle, a triangle, or a hexagon, as shown in FIGS. 5 (a) (b) (c), respectively. Good.

The spacer (42) is made of stainless steel, which is the same material as the porous plate (41). As shown in Fig. 6, multiple types of spacers (41) with different thicknesses (t1) (t2) (t3) are prepared, and the spacer (41) corresponding to the required surface tension is selected and used. It The thickness (t1) (t2) (t3) of the spacer (42) is 0.3, 0.5, or 1.0 mm, for example.

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

[0029]

[Effect of the device]

 According to this invention, there is no risk of pulp or fibrous matter mixed in the filling liquid being caught or caught at the intersection of the vertical line portion and the horizontal line portion. Is very good.

In addition to the fact that the upper and lower surfaces of the perforated plate are flat, the gap between the adjacent perforated plates is determined by the thickness of the spacer, so that the gap can be set to a desired size. The surface tension of the plate can be effectively exerted.

[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 main body (21) and a plurality of nozzles arranged vertically adjacent to each other at a lower end opening of the cylindrical nozzle main body (21) to prevent the liquid from flowing down due to its own weight due to the surface tension of the liquid. In the liquid filling nozzle provided with the porous plate (41) of FIG.
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).