JPS6234635B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in fill valves.

Figures 1 and 2 show an example of a conventional filling valve. 1 is a valve opening/closing lever (outside), 2 is a shaft, 3 is a valve opening/closing lever (inside), and 1 is a valve opening/closing lever (outside). A valve opening/closing lever (inner) 3 is integrally formed via a shaft 2 and is rotatably attached to a side wall of a filler bowl 4. Note that a in FIG. 1 indicates a closed position, and b indicates an open position.

5 is the charging valve, the valve body (top)
5a, consisting of a valve body (lower) 5b and a gasket 6 inserted into these, the valve body (lower) 5
b is slidably fitted onto the stem 7 and supported by a spring 8 interposed between the stem 7 and the stem 7.

5c is a vent hole, and the charging valve 5, packing 6, and stem 7 constitute a gas valve. A collar 9 is fixed to the stem 7, and the collar 9 is connected to the liquid passage 11a by a spring 10.
is urged upward in a spring case 11 having a Also, there is a packing 12 at the bottom of the stem 7.
The gasket 12 and the sniff block 13 constitute a main liquid valve.
A snift valve consisting of a cap nut 14, a snift stem 15, a packing 16 and a spring 17, and a snift orifice 18 are provided in the snift block 13. A centering cup (outer) 19 is provided at the bottom of the snift block 13, and is attached to the filler bowl 4 by means of a fitting 21 via a packing 22.

Reference numeral 20 denotes a centering cup (inner), which is provided so as to be movable in the vertical direction by a known means (not shown).

A vent tube 23 is screwed into the lower part of the stem 7, and the tube 23 is provided with a spreader 24 and has a vent hole 25 formed therein.

26 is a bottle, 27 is an air cylinder for raising and lowering the bottle,
When the bottle 26 is lifted by the upward movement of the air cylinder 27, the bottle mouth hits the centering cup (inner) 20, lifts it, and presses it against the sniff block 13, resulting in the state shown in FIG.

FIG. 2 shows a bottling state in which the valve opening/closing lever (outer) 1 and the valve opening/closing lever (inner) 3 are in position b, and both the main liquid valve and the gas valve are open. and stem 7
has been raised by the dimension c, and the charging valve 5 has been raised by the dimension d, and there is a relationship c<d between them.

Next, the bottling operation by the above-mentioned filling valve will be explained.

When the bottle 26 is lifted up by the air cylinder 27, it will be in the state shown in FIG. Now, when the valve opening/closing levers 1 and 3 are moved from the a position to the b position, only the position of the charging valve 5 becomes the state shown in FIG. Flows in the opposite direction, and the pressure inside the bottle is the same as inside the filler bowl. This causes the spring 10 to connect to the stem 7 and the vent tube 2.
3 is raised to the state shown in FIG.
4, 35, and 36 flow into the bottle. On the other hand, the gas in the bottle returns to the filler bowl 4 as shown by arrows 30, 29, and 28, and when the liquid level in the bottle rises and closes the vent hole 25, the gas stops returning, and this instantaneous liquid flow also returns to the sniff block 13. upper end arrow 3
3, the liquid flowing at arrows 34 and 35 falls into the bottle, and the liquid level in the bottle becomes 38 shown in FIG. At this point, when the valve opening/closing levers 1 and 3 are returned to the a position, the state shown in FIG. 1 is reached. In this case, the liquid is rising inside the stem 7, and there is a counter pressure gas at the 40th position at the top and at the 41st position at the top of the bottle, which pushes the snift stem 15 in the direction of the arrow 42. Then, the air cylinder 27
The bottling operation is completed by lowering the bottle 26 and ejecting the bottle 26.

The problem here is that for a bottle shaped like the one shown in Figure 4, that is, with respect to the inner diameter of the bottle inlet φD ₁ , the part that goes down a little has a diameter of φD 2, which is larger than φD ₁ , and the part that goes down further than that has a diameter of φD ₂ . This is a case where the shape is such that φD ₃ is smaller than φD ₂ , and 〓D ₁ is packed into a narrow neck bottle (crown bottle) or a slightly larger bottle (cap bottle).

As shown in Fig. 3, the filling valve is generally designed so that the outlet section _A2 of the snift block 13 is sized to match the crown bottle, and the cross-sectional area of the liquid flow passage is set to _A1 > _A2 > _A3. It is desirable to rectify the flow by squeezing it so that the liquid film follows the inner wall of the bottle, but in the case of a bottle with the shape shown in Figure 4, as shown in Figure 5, the liquid flow path is cut off. Since the area is larger in the _A4 section than in the _A2 section, gas accumulates in the passage, and when the liquid comes into contact with the swirling compressible gas, the degree of turbulence of the liquid increases and it becomes activated. There was a problem that the liquid film arteries promoted foaming. In particular, in the case of a bottle having the shape shown in FIG. 4, when the spreader 24 is placed in the position shown in _{FIG .}
Since the liquid flows toward the vent tube 23 and blocks the vent hole 25, it is necessary to arrange the spreader 24 so that the liquid flows along the φD ₃ portion as shown in FIG.

The present invention has been proposed in view of the above-mentioned points, and includes a vent tube that has a vent hole at the tip and a spreader on the outer wall, which is placed inside the container with the mouth of the container in contact with the liquid injection part. In a filling valve for filling a container with a liquid from a lower liquid flow passage formed between the inner wall of the container opening and the outer wall of the vent tube, the cross-sectional area of the lower liquid flow passage is A spreader having a body having a size and shape that does not increase the cross-sectional area of a liquid flow passage in a liquid injection part, and a liquid diffusion part below the body that diffuses the liquid to the inner wall of the container and forms a liquid film along the inner wall of the container. The purpose is to provide a filling valve capable of forming a rectified liquid film flow along the inner wall of the container to perform a stable filling action without foaming. That is.

Since the present invention is configured as described above, it is possible to obtain a rectified liquid flow without enlarging the cross-sectional area of the lower liquid flow passage due to the presence of the spreader body, and at the same time, it is possible to obtain a rectified liquid flow. Since it can be made to flow down along the inner wall of the container, it is possible to prevent gas accumulation and turbulence, and to perform a stable filling action without foaming.

Hereinafter, the present invention will be explained based on illustrated embodiments.

FIG. 6 is a sectional view showing only the main parts, and the parts other than those shown have the same structure as the conventional one.

13 is a sniff block, 20 is a centering cup, 50 is a vent tube, and 51 is a spreader. The vent tube 50 has a vent hole 50a at the bottom, and the spreader 51
The body 51a is attached to the vent tube 50 and has a shape that follows the inner wall of the bottle opening, and a liquid diffusion part 51b that causes the liquid to flow along the inner wall of the bottle and narrows the liquid flow passage. The cross-sectional area a of the liquid flow passage formed between the body portion 51a and the inner wall of the bottle mouth portion is uniform in the vertical direction.
Alternatively, it is configured so that it can be tightened downward.

It is assumed that the cross-sectional area b of the liquid flow passage formed by the centering cup 20 and the upper part 50b of the vent tube 50 is not smaller than the cross-sectional area a.

In the above configuration, when filling a bottle, the liquid flows down the passage formed by the sniff block 13, the centering cup 20, the bottle, the vent tube 50 and the spreader 51, forms a film flow along the inner wall of the bottle, and fills the bottle. filled inside. Here, due to the presence of the body 51a of the spreader 51, the cross-sectional area of the lower liquid flow passage is not expanded and the liquid is squeezed, so the liquid is rectified and no gas accumulation or turbulence occurs. It is quietly flowed down along the inner wall of the bottle by the diffusion part 51b.

Therefore, even for bottles having the shape shown in FIG. 4, stable bottling without foaming can be carried out.

[Brief explanation of the drawing]

1 to 5 are diagrams showing the conventional one, and FIGS. 1 and 2 are sectional views showing different operating states,
Fig. 3 is a partial sectional view, Fig. 4 is a view showing the shape of the bottle, Fig. 5 is a sectional view showing the state of filling the bottle shown in Fig. 4, and Fig. 6 shows an embodiment of the present invention. FIG. 50: Bent tube, 51: Spretzder,
51a: Body part, 51b: Liquid diffusion part.

Claims (1)

[Claims] 1. With the mouth of the container in contact with the liquid injection part, insert a vent tube with a vent hole at the tip and a spreader on the outer wall into the container, and insert the vent tube with the inner wall of the container mouth and the outer wall of the same vent tube. In a filling valve that fills a container with liquid from a liquid flow passage formed between the liquid flow passage and the liquid flow passage, the liquid flow passage may be large enough to prevent the cross sectional area of the liquid flow passage from becoming larger than the cross sectional area of the liquid flow passage in the liquid injection portion formed above. A filling characterized in that the vent tube is provided with a spreader having a body portion having the same shape and a liquid diffusion portion below the body that diffuses liquid to the inner wall of the container and forms a liquid film along the inner wall of the container. valve.