JPS6154671B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in a counter pressure bottling method.

[Conventional technology]

To explain the conventional bottling method based on Figures 1 and 2, the valve opening/closing lever (outside) 1
A valve opening/closing lever (inner) 3, which is integrated with the filler bowl 4 via a shaft 2, is rotatably attached to a side wall (not shown) of the filler bowl 4. In addition, a in FIG. 1 is a closed position, and b is an open position. Reference numeral 5 designates a charging valve, which is composed of a valve body (upper) 5a, a valve body (lower) 5b, and a gasket 6 sandwiched between them. 8 is the stem 7 and the valve body (lower) 5b
The charging valve 5 is supported by the spring 8 in a floating state above the stem 7. 5c is a vent hole, and the charging valve 5, gasket 6, and stem 7 constitute a gas valve A.

A collar 9 is fixed to the stem 7, and the collar 9 is urged upward within a spring case 11 by a spring 10. Also, a packing 12 is built in the lower part of the stem 7, and the packing 12 is built in the lower part of the stem 7.
2 and the sniff block 13 constitute a liquid valve B. C indicates a liquid passage. Inside the snift block 13 is a bag nut 14 and a snift stem 1.
5. It incorporates a snift valve consisting of a seal 16 and a spring 17, and a snift orifice 18. Furthermore, a centering cup (outer) 19 and a centering cup (inner) (made of rubber) 20 are provided at the bottom of the sniff block 13, and these are attached to the mounting bracket 2.
1 is attached to the filler bowl 4 via a packing 22. Furthermore, a vent tube 23 is screwed into the lower part of the stem 7.
A spreader 24 is attached to 3, and a vent hole 25 is provided below the spreader 24. 26 is a bottle that is pushed up from below by an air cylinder 27,
The bottle opening is pressed against the centering cup (inner) 20, and the bottle opening and centering cup (inner) 20
There is no leakage between the two. 11a
is a liquid passage in the spring case 11. Figure 2 shows the valve opening/closing lever (outer) 1 and the valve opening/closing lever (inner) 3 in position b, with the liquid valve
Showing the bottled state with both gas valves A open,
1, the vent tube 23 and stem 7 are c
The charging valve 5 has risen by the dimension d, and there is a distance c between them.
There is a relationship of <d.

Next, a bottling method using the bottling valve configured as described above will be explained. First, the air cylinder 27 releases the bottle 2.
When the bottle 6 is pushed up, it will be in the state shown in Figure 1, but the liquid has not yet entered the bottle. In Figure 1, when the valve opening/closing lever (outer) 1 and the valve opening/closing lever (inner) 3 are moved from the a position to the b position, the charging valve 5 rises, and only the valve 5 is in the position shown in Figure 2. Then gas valve A opens. Next, pressurize the counter inside the filler bowl 4 (usually 2 to 4 kg/cm)
The gas for G) flows in the opposite direction of the arrows 28, 29, and 30, so that the inside of the bottle 26 has the same pressure as the inside of the filler bowl 4. As a result, the spring 10 pushes up the stem 7 and the vent tube 23, resulting in the state shown in FIG. Here, the liquid flows down as arrows 31, 32, 33,
The spreader 24 fills the bottle along the inner wall of the bottle 26.

On the other hand, the gas in the bottle 26 is
It returns to the filler bowl 4 as shown in 8, and bottling proceeds in this manner. Next, the liquid level 34 in the bottle
rises and closes the vent hole 25.

When the vent hole 25 is closed, the gas in the bottle 26 will flow to the lower part of the spreader 24 and the vent hole 25.
The liquid filling the bottle is confined in the space above the bottle mouth between the two, and once the vent hole 25 is closed, the level of the liquid in the bottle is once determined.

Here, referring to FIG. 5, the planar arrangement of the bottling machine will be explained in accordance with the bottling order. 51 is the bottling machine, 52 is a bottle feeding star wheel, 53 is a bottle discharging star wheel, The bottle is supplied from the conveyor via the indexing screw onto the air cylinder 27 by the bottle feeding star wheel 52.
As the air cylinder 27 rises, it is tightly sealed to the centering cup (inner) 20 at the A position as shown in FIG. 1, and the gas valve A is opened between A and B.
The inside of the bottle 26 is pressurized to the same pressure as the filler bowl 4, and the force of the spring 10 acts to lift the stem 7 and vent tube 23, and the liquid valve B
opens and the liquid begins to flow into the bottle.

At this time, if there is a broken bottle, gas valve A and liquid valve B are closed between B and C.

If there are no broken bottles, the bottle filling progresses, and the vent hole 25 is blocked by the liquid filling the bottle at position 2. Here, in the conventional bottling method, the gas pressure in the bottle 26, the head pressure in the filler bowl 4, and the liquid level rising in the vent tube 23 and stem 7 are Since the pressure is balanced, the gab liquid naturally falls,
Gas valve A and liquid valve B are closed by a cam between E and F, and after performing a sniff between H and G to bring the gas pressure in the bottle to atmospheric pressure, the air cylinder 27 is lowered, The bottle is ejected by a bottle eject star wheel 53.

[Problem that the invention seeks to solve]

Here, the flow of the liquid shown by the arrow 33 in FIG. The remaining liquid and the small amount of liquid that has climbed over the top of the sniff block 13 will flow into the bottle. That is, the gas in the space above the bottle mouth is surrounded by the liquid flow, the staying liquid above the spreader 24 (hereinafter referred to as gulp liquid), and the liquid level in the bottle, and is pressurized. is maintained, and the liquid level in the vent tube 23 and stem 7 is raised through the vent hole 25, and while reaching the position from D to E, the liquid level in the filler bowl 4 is increased by the head pressure in the filler bowl 4 and the liquid level in the vent tube 23 and stem 7. When the pressure reaches equilibrium with the pressure of the gas, the gub liquid falls into the bottle 26, and the rising gas replaces the gub liquid, causing the upper end of the sniff block 13 to be pressed at the liquid valve B. This will stop the flow of liquid that is about to flow into the bottle 26. However, the gas that replaces the gobble liquid when it falls rises along the surface of the sniff block 13, rises along the vent tube 23, or rises through the liquid, and is not necessarily constant. As a result, this appears as a difference in the suction amount of the liquid in the area shown by the arrow 33 that connects with the gub liquid when it falls, resulting in so-called variations in the amount of gub liquid, and the amount of filling liquid into the bottle. The disadvantage is that the seasoning level is not constant.

It is an object of the present invention to eliminate the above-mentioned drawbacks and improve the accuracy of filling liquid into a bottle.

[Means for solving problems]

For this reason, the present invention provides a vent tube that is inserted into a bottle during liquid filling, a gas valve that communicates or shuts off the vent tube and the space inside the filler bowl, and a liquid passage that communicates between the inside of the filler bowl and the inside of the bottle. Connect the bottle mouth to a bottling valve equipped with a liquid valve, open the gas valve and liquid valve of the bottling valve to counter-pressurize the inside of the bottle, and fill the bottle with liquid. In a bottling method in which the counter pressure in the upper space is discharged to the atmosphere through a snift valve of the bottling valve, and then the bottle is separated from the bottling valve, the filling liquid in the bottle is provided in the vent tube. After blocking the vent hole where the
By closing the gas valve and the liquid valve before the liquid remaining in the liquid passage between the spreader provided in the vent tube and the liquid valve naturally falls into the bottle, the gas valve and the liquid valve are closed. It is characterized in that the closing pressure allows the gulp liquid to overcome the gas pressure in the space above the bottle mouth and rapidly fall into the bottle.

[Effect]

As described above, the present invention deals with the pressure caused by the rising liquid level in the vent tube and stem and the head pressure in the filler bowl before the gulp liquid naturally falls after the filling liquid in the bottle closes the vent hole. However, in balance with the gas pressure trapped in the space above the bottle mouth, the gas valve and the liquid valve are closed before the gas rises in the gub liquid, and the closing pressure when the liquid valve closes Since the gub liquid overcomes the gas pressure and rapidly falls into the bottle, it is possible to prevent variations in the amount of liquid sucked in due to the rise of the gas and to make the gub liquid amount constant. Therefore, it is possible to improve the accuracy of adding flavor to the liquid in the bottle after filling.

〔Example〕

The present invention will be explained below based on the embodiments shown in FIGS. 3 to 5.

As shown in FIGS. 3 and 4, the bottling valve of this embodiment has a sputterer 24 of a vent tube 23.
It is the same as the conventional one shown in FIGS. 1 and 2 except that a spacer 50 is provided integrally with the vent tube 23 between the gasket 12 at the bottom of the stem 7 and the cross-sectional area of the liquid passage C is narrowed. It is.

Furthermore, this embodiment differs from the conventional method in that a cam for closing gas valve A and liquid valve B is disposed between D and H in FIG. It is.

In the above configuration, a bottling method will be explained. The filling liquid flows down in the directions of arrows 31, 32, and 33, and after climbing over the upper end of the sniff block 13, in the liquid passage C, because the spacer 50 is provided, it is subjected to a greater flow resistance than the conventional one, and flows into the spreader 24. The liquid level in the bottle is once reached and flows along the inner wall of the bottle 26, the liquid filling the bottle rises, and the liquid level closes the vent hole 25, once the height of the liquid level in the bottle is determined. Note that since the filling time is determined by the cross-sectional area of the liquid passage in the spreader portion, the provision of the spacer has almost no effect on the filling time.

Here, the flow of the liquid shown by the arrow 33 has inertia, but the liquid that tries to cross the upper end of the sniff block 13 is restricted by the large flow path resistance caused by the provision of the spacer 50, so the flow rate is It flows down into the bottle while rapidly decreasing, and flows from the vent hole 25 to the vent tube 23 and the stem 7.
This will raise the liquid level inside. This decrease in flow rate means that the speed at which the gas in the space above the bottle mouth is compressed has become slower, and therefore the rate of rise of the liquid level in the vent tube 23 and stem 7 has also become slower, and the filler bowl It takes a long time for the head pressure in the vent tube 23 and the pressure due to the liquid level height in the vent tube 23 and the stem 7 to balance out the gas pressure. In the conventional system, the gub liquid falls when the pressure is balanced, but in this embodiment, we focused on the above-mentioned length of time, and the gab liquid is placed before the gub liquid falls, that is, between D and H in Fig. 5. The provided cam rotates the valve opening/closing lever (outer) 1 and the valve opening/closing lever (inner) 3 to the position a in Figure 3, closing the gas valve A and liquid valve B, and releasing the gas in the space above the bottle mouth. However, before it rises in the gub liquid, the closing pressure when the liquid valve B is closed overcomes the pressure of the gas and causes the gub liquid to fall rapidly. It is possible to prevent variations in the suction amount of liquid in the area shown by and to make the amount of gub liquid constant, and by providing the spacer 50, the gub volume is reduced, so the amount of bubbles in the gub liquid is also reduced. become.

Therefore, the accuracy of seasoning of the filling liquid can be improved.

Note that the time required for the gas pressure in the space above the bottle mouth to balance out with the head pressure in the filler bowl 4 and the pressure due to the liquid level height in the vent tube and stem is extended, and the gulp liquid falls. Although it is desirable to provide a spacer 50 as shown in the above embodiment to ensure that the gas and liquid valves are closed beforehand, this spacer may be omitted or may be formed integrally with the vent tube 23. .

〔Effect of the invention〕

As described above, according to the method of the present invention, after the filling liquid in the bottle closes the vent hole provided in the vent tube, it remains in the liquid passage between the spreader and the liquid valve provided in the vent tube. Before the gub liquid naturally falls into the bottle, the pressure due to the liquid level rising in the vent tube and stem and the head pressure in the filler bowl are combined with the gas pressure trapped in the space above the bottle mouth. In balance, by closing the gas valve and the liquid valve before the gas rises in the gub liquid, the closing pressure when the liquid valve closes causes the gub liquid to overcome the gas pressure and rise inside the bottle. Since the liquid is rapidly dropped into the bottle, it is possible to prevent variations in the amount of liquid sucked in due to the rise of the gas, and to stabilize the amount of liquid in the gulp. can be improved.

In the above embodiment, the spreader 24 of the vent tube 23 and the packing 12 of the lower part of the stem 7 are
A spacer 5 that sandwiches the cross-sectional area of the liquid passage C between
0 is provided to increase the flow path resistance and reduce the liquid falling flow rate, and to reduce the pressure due to the gas pressure in the space above the bottle mouth, the head pressure in the filler bowl 4, and the liquid level height in the vent tube and stem. By extending the time it takes for the liquid to balance, it is possible to reliably close the gas valve and liquid valve before the gub liquid falls, and since the gub volume is reduced, the amount of air bubbles in the gub liquid is also reduced, and the amount of air bubbles in the bottle is reduced. Although it has the advantage of further improving the flavoring accuracy of the filling liquid, the provision of the spacer 50 is not an essential technical matter of the present invention, and may be employed as necessary.

[Brief explanation of the drawing]

FIGS. 1 and 2 are sectional views showing a conventional bottling valve, FIGS. 3 and 4 are sectional views showing an embodiment of the present invention, and FIG. 5 is a plan view of a bottling machine. A: gas valve, B: liquid valve, C: liquid passage,
23: Vent tube, 24: Spretsuda, 2
5: vent hole, 26: bottle.

Claims (1)

[Claims] 1. A vent tube that is inserted into a bottle during liquid filling, a gas valve that communicates or shuts off the vent tube and the space inside the filler bowl, and a liquid valve installed in a liquid passage that communicates between the inside of the filler bowl and the inside of the bottle. Connect the bottle mouth to a bottling valve equipped with a bottling valve, open the gas valve and liquid valve of the bottling valve to apply counter pressure inside the bottle and fill the bottle with liquid, and after filling the liquid, reduce the counter pressure in the upper space of the bottle. In a bottling method in which the bottle is released into the atmosphere through the sniff valve of the same bottling valve, and then the bottle is separated from the same bottling valve,
After the filling liquid in the bottle closes the vent hole provided in the vent tube, the gulp liquid remaining in the liquid passage between the spreader provided in the vent tube and the liquid valve naturally falls into the bottle. The gas valve and the liquid valve are closed before the liquid valve is closed, so that the closing pressure when the liquid valve is closed causes the gulp liquid to overcome the gas pressure in the space above the bottle mouth and rapidly fall into the bottle. bottling method.