JPS6145038Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention can be applied to beer, light sparkling wine, gas-containing energy drinks, etc., in which CO ₂ is dissolved in a liquid and filled under pressure with CO ₂ . The present invention relates to a top-filling type filling device equipped with a vent tube suitable for filling liquids that do not require dissolution of air.

[Prior Art] FIGS. 1 and 2 show an example of a conventional filling device, in which a bottle B is lifted by a lift cylinder (not shown) and placed on a bottle mouth rubber 14 as shown in FIG. When the bottle B is pressed, the inside of the bottle B is sealed, and when the charging body 1 is lifted upward using a known device (not shown), the sealed portion of the charging gasket 9 is opened, and the liquid in the tank 10 is released. The carbon dioxide gas for counter pressurization in the upper space of surface 6 is connected to stem 3,
It is fed into the bottle B through the vent tube 27. When the inside of the bottle B is pressurized to the same pressure as the internal pressure inside the tank 10, the stem 3 and charging body 1 are lifted upward by the dimension a by the action of the post spring 7, so that the seat rubber 12 and the liquid valve body A gap is formed between the tank 10 and the sprayer 26, and the liquid in the tank 10 flows down.
The water is expanded and filled along the inner wall of bottle B. As the liquid filling progresses, the gas in the bottle B passes through the vent tube 27 and the stem 3,
When the filled liquid level in the bottle B rises and reaches the lower end of the vent tube 27 and closes the lower end opening, there is no escape passage for the gas in the bottle B, and the vent is removed. The liquid rises into the tube 27 and stem 3, and the liquid head is in a balanced state H ₁ =H ₂ as shown in FIG. 2, and the flow of liquid is stopped.

Next, push down charging body 1,
First, the charging gasket 9 comes into contact with the stem 3, and as it is further pushed down, the seat rubber 12 comes into contact with the liquid valve body 13.
The filling device is closed.

Next, by pushing in the snift stem 19a and opening the seal of the snift packing 22, the counter pressure at the top of the bottle mouth is applied to the orifice 21.
It is then released to the atmosphere.

[Problems to be solved by the invention] During sniffing with the conventional device described above, the sealing position by the charging gasket 9 is located at the liquid level 6 in the tank.
However, it has a significant effect on the liquid in the bottle. That is, if the seal position is in the rising liquid in the vent tube 27 and stem 3, which are in a balanced state as shown in FIG. 2, no liquid will jet from the vent tube 27 into the bottle during sniffing. It is. This has the advantage of preventing stirring of the liquid in the bottle during sniffing, but on the other hand,
The liquid held in the vent tube 27 and stem 3 until the next time the bottle is filled becomes a mist and is sprayed against the inner wall of the bottle when the bottle is pressurized by the counter, which becomes the core of foaming, and the filling ends. rear,
Foaming caused liquid spillage, resulting in an insufficient filling amount and other negative effects.

One way to solve this problem is to drain the remaining liquid in the vent tube and stem to the outside of the machine before the next bottle is fed, but this leads to a large amount of liquid loss and environmental pollution. A problem arises. There is also a device in which the charging gasket 9 is installed above the submerged H ₂ , but this
As shown in FIG. 3, there was a problem in that the liquid rising in the vent tube and stem jetted into the liquid in the bottle, stirring the liquid in the bottle and causing a large amount of foaming.

Conventionally, if the liquid to be filled is one in which dissolution of air is particularly objectionable (for example, beer), the solution has been to exhaust the air inside the container before filling the liquid.

That is, when the bottle is supplied in a sealed state, first, the vacuum stem 19b is pushed to connect the vacuum chamber 17 and the passage 25 into the bottle, and after the air inside the bottle is evacuated to create a vacuum, the vacuum stem 19b is pressed. Apply counter pressure inside the bottle and fill it with liquid. When the inside of the container is evacuated before filling in this manner, the liquid below the charging gasket 9 becomes degassed and cannot form a nucleus for foaming, so that it falls into the bottle. Thereafter, carbon dioxide gas in the tank 10 is supplied into the bottle and counter-pressurized. In this case, the liquid above the charging gasket 9 still enters the bottle as foaming nuclei, but this amount is relatively small and does not pose much of a problem in practice. This prevents air from getting mixed in and evenly suppresses foaming during sniffing to a minimum.

However, when filling at high speed, the remaining liquid in the vent tube and stem, which was not a problem, has a large effect on foaming, especially the liquid above the charging gasket 9, and these nuclei cause large and uneven foaming. , has become a practical problem.

In addition, in FIG. 1, 2 is a charging spring that urges the charging body 1 upward;
4 is a φ ring, 5 is a guide collar fitted into the upper part of the stem 3 and fixed by the φ ring 4, 8 is a post spring case, 8a is a pin that regulates the ascending position of the stem 3, and 8b is a spring case 8
11 is a φ ring, 15 and 16 are centering bells that hold the bottle mouth rubber 14,
18 is a φ ring, 20 is a valve body, 23 is a snift spring, and 24 is a snift abbreviation.

An object of the present invention is to provide a filling device that solves the above problems and enables high-speed filling by increasing the flow rate.

[Means for Solving the Problems] The present invention includes a liquid valve body attached to the bottom of a filling tank, and a liquid valve body fitted into the valve body so as to be movable up and down to supply counter-pressurized air into the container and from the inside of the container. a vent tube that is attached to the lower part of the stem and forms a passage that communicates with the passage of the stem, and has a vent hole at its lower end that determines the level of the liquid entering the stem; a charging valve provided at the bottom; a liquid valve formed between the stem and the valve body and opened and closed by vertical movement of the stem; and an air exhaust device for exhausting air from the container before filling the liquid. , a gas beverage filling device for bottling the liquid in the filling tank under pressure, comprising a sniff mechanism that releases the mouth of the container to atmospheric pressure after the charging valve and the liquid valve are closed; The vent tube is characterized in that a float chamber containing a built-in float for preventing liquid from rising into the vent tube is provided at the lower end, and the float chamber is configured to be submerged in the liquid when filling is completed.

[Operation] Since the present invention is configured as described above,
The air inside the container is evacuated to create a vacuum before filling with liquid, and the inside of the container is then counter-pressurized with carbon dioxide gas, and a float chamber with a built-in float is installed at the tip of the vent tube.
This is due to the effect of preventing the liquid from rising into the vent tube and leaving no residual liquid that becomes the core of foaming, as well as eliminating the liquid jet during sniffing to suppress foaming. Can enable high-speed filling.

Furthermore, by configuring the float chamber to be immersed in the liquid when filling is completed, the float ball is immersed in the liquid when filling is completed, and the holding force of the float ball in the closed state is due to the buoyancy of the float ball. The pressure difference is added and becomes strong, which can effectively prevent leakage.

[Example] Hereinafter, an example of the device of the present invention is shown in Figs. 4 to 6.
This will be explained based on the diagram. Note that in FIGS. 4 to 6, 1 to 27 are the same as those of the conventional device described above, and in this embodiment, only the differences from the conventional device will be explained.

A float chamber 28 is formed at the tip of the vent tube 27 and includes a float ball 29 that prevents the liquid from rising into the vent tube 27 when the liquid level in the bottle rises. 30 and a tapered surface 31 are provided to allow gas to enter and exit, and the float ball 29 floats to form a seal.

Next, the effect will be explained.

When the bottle B is raised and the liquid valve body 13 and the inside of the bottle B are brought into a sealed state via the bottle mouth rubber 14, the vacuum stem 19b is pushed in by a known cam (not shown), and the vacuum chamber 17 and the vacuum passage are pushed together. 25 are communicated with each other, and the air in bottle B is discharged. Next, the charging body 1 is lifted, and the carbon dioxide gas for counter pressurization in the tank 10 is supplied into the bottle B.
Pressurize the inside of bottle B to the same pressure as the inside of the tank. When the pressure in the bottle B becomes equal to the pressure in the tank 10, the post spring 7 causes the stem 3 to move to the dimension a.
As it is lifted upward, the liquid flows down and filling begins.

As the filling of the liquid progresses, the carbon dioxide gas in the bottle B returns to the tank 10, and the filled liquid level in the bottle B rises and reaches the window 30 of the float chamber 28, and enters the float chamber 28. float pole 2
9 rises and comes into contact with the tapered surface 31 to prevent the liquid from rising into the vent tube 27. Therefore, the pressure in the upper part of the bottle increases, and when this pressure becomes equal to the liquid level head _H1 shown in FIG. 5, the liquid stops flowing down.

Next, the charging body 1 is pushed down, the charging gasket 9 and the liquid gasket 12 are brought to the sealing position, and then the sniff stem 19a is pushed in, and the counter pressure at the top of the bottle is released to the atmosphere through the orifice 21.
Along with this, the counter pressure between the float pole 29 and the charging gasket 9 is also released to the atmosphere, so this gas is jetted as shown in Figure 6, but only the gas is jetted. Even if the injection speed is the same, the kinetic energy (E = Wv ² /2g) is smaller than that of a liquid jet, and it only affects the area above the liquid level.
Foaming caused by this can be suppressed to a level that does not pose a practical problem, and when the bottle B is lowered after the sniffing is completed, the filling cycle is completed.

[Effects of the invention] As mentioned above, the conventional system shown in Figures 1 and 2 is superior in that there is no liquid or gas jet during sniffing, and the liquid is not stirred after filling. However, it has been found that when high-speed filling is performed, residual liquid in the vent tube and stem has a large effect on foaming due to turbulence when air is entrained by the intrusion of the liquid film.To solve this problem, At the very least, the sealing position of the charging gasket should be equal to or only slightly larger than the _H2 in the liquid.
As shown in the figure, during sniffing, agitation due to the influence of the liquid jet causes boiling over, resulting in the two contradictory phenomena mentioned above. By preventing the liquid from rising into the vent tube, it is possible to eliminate the liquid jet during sniffing and the residual liquid that causes foaming when filling the next bottle. By discharging the air in the bottle beforehand, it becomes possible to perform high-speed filling while preventing air from dissolving even in liquids in which air easily dissolves.

[Brief explanation of the drawing]

Figures 1 to 3 are diagrams showing the conventional filling device. Figure 1 is a sectional view showing the filling device in a closed state, Figure 2 is a sectional view showing the state when the liquid flow is stopped, and Figure 3 is a sectional view showing the filling device in the closed state. Cross-sectional view showing the state of liquid jet during sniffing, No. 4
6 to 6 are views showing one embodiment of the present invention, FIG. 4 is a cross-sectional view showing the filling device in a closed state, FIG. 5 is a cross-sectional view showing the state when the liquid flow is stopped, and FIG. FIG. 2 is a cross-sectional view showing the state during sniffing. 17: Vacuum chamber, 19b: Vacuum stem, 25: Vacuum passage, 27: Vent tube, 28: Float chamber, 29: Float pole.

Claims (1)

[Scope of utility model registration request] A liquid valve body attached to the bottom of the filling tank, a stem fitted into the valve body so as to be movable up and down and forming a passage for counter-pressurized air into the container and return air from the inside of the container, and a stem of the stem. a vent tube which is attached to the lower part and forms a passage communicating with the passage of the stem, and has a vent hole at its lower end that determines the liquid level; a charging valve provided at the lower part of the stem; a liquid valve that is formed between the valve body and opens and closes when the stem moves up and down; an air exhaust device that exhausts air from the container before filling the liquid; and a container opening after the charging valve and the liquid valve are closed. In the gas beverage filling device for bottling the liquid in the filling tank under pressure, the device is equipped with a snift mechanism that releases the liquid in the filling tank to atmospheric pressure. A filling device comprising a float chamber containing a built-in float, and the float chamber is configured to be immersed in liquid when filling is completed.