JP2523119Y2 - Filling valve - Google Patents

Description

[Detailed description of the invention] "Industrial application field" The present invention relates to a filling valve for filling a filling liquid into a container, and more specifically, prevents gas in the container from escaping due to surface tension of the filling liquid. The present invention relates to a filling valve having a through hole.

2. Description of the Related Art Conventionally, as a filling valve, a filling liquid passage for supplying a filling liquid into a container, an umbrella-shaped liquid valve for opening and closing the filling liquid passage, and an umbrella-shaped liquid valve provided in the filling liquid passage An annular siphon portion in which the lower end is inserted at the time of closing, that is, an annular liquid reservoir portion, provided in this umbrella-shaped liquid valve, when filling the container with the filling liquid, circulates the filling liquid, and at the end of filling A through hole that prevents the gas in the container from escaping due to the surface tension of the filling liquid, and a gas that escapes the gas in the container when filling the filling liquid and fills the liquid when a predetermined amount of the filling liquid is filled in the container. And a gas passage that is closed by a gas (Japanese Utility Model Publication No. 62-11836).

In this type of filling valve, the umbrella liquid valve is raised and its lower end is moved above the siphon section,
As a result, the filling liquid passage is opened to start filling.
In this case, the filling liquid flows through the gap between the lower end portion of the umbrella-shaped liquid valve and the siphon portion, and also flows through the through-hole provided in the umbrella-shaped liquid valve to fill the container.

When the filling liquid is filled in the container, the gas in the container escapes to the outside via the gas passage, the level of the filling liquid filled in the container rises, and the liquid surface rises above the gas passage. When the opening is closed, the through hole prevents the gas in the container from escaping due to the surface tension of the filling liquid, so that the pressure of the gas remaining in the container increases, thereby completing the filling of the filling liquid.

Further, conventionally, instead of providing a through hole in the umbrella-shaped liquid valve, a wire mesh is provided at the downstream side of the liquid valve so as to be orthogonal to the filling liquid passage and closes the filling liquid passage, and a gap in the wire mesh is defined as the through hole. It is also known that the siphon section is omitted (Japanese Patent Publication No. 45-14390).

"Problem to be Solved by the Invention" In the former filling valve described above, the through-hole formed in the umbrella-shaped liquid valve makes the flow of the filling liquid as smooth as possible by flowing the filling liquid through the through-hole. Although the entrainment of gas into the liquid is reduced, when the liquid valve is raised, that is, at least at the start of filling, the filling liquid flows through the gap between the lower end of the umbrella liquid valve and the siphon section, A part of the filling liquid is inverted by the siphon part and becomes an upward flow, which merges with the filling liquid flowing downward through the through-hole, so that there is a drawback that turbulence is easily generated in that part. .

On the other hand, in the latter filling valve, since the siphon section is omitted, no turbulent flow is generated by the siphon section, but the filling liquid flows through a wire mesh arranged orthogonally to the filling liquid passage, so there is no turbulence there. There is a disadvantage that a flow is easily generated. In addition, since the wire mesh is provided on the downstream side of the liquid valve, the filling liquid is left between the liquid valve and the wire mesh, and the remaining filling liquid falls into the container after filling is completed or at the time of starting filling. This also has the disadvantage of causing foaming.

[Means for Solving the Problems] In view of such circumstances, the present invention considers a filling valve having the above-mentioned through hole, that is, a filling liquid passage for supplying a filling liquid into a container, and a vertically movable liquid filling passage. A valve stem provided on the valve stem, a liquid valve provided on the valve stem for opening and closing the filling liquid passage, and flowing the filling liquid when filling the container with the filling liquid, and at the end of filling by the surface tension of the filling liquid. A through hole that prevents gas in the container from escaping, and a gas passage that allows gas in the container to escape when the filling liquid is filled, and is closed by the filling liquid when a predetermined amount of the filling liquid is filled in the container. In the filling valve, the filling liquid passage is provided with an upper large-diameter hole, a lower small-diameter hole, and an inverted conical hole connecting the large-diameter hole and the small-diameter hole. Contact the above inverted conical hole The filling liquid passage is opened and closed, and a cylindrical closing member surrounding the valve stem is provided in the filling liquid passage upstream of the liquid valve, and an upper inner peripheral surface of the closing member is provided on an outer peripheral surface of the valve stem. And a lower end of the closing member is brought into contact with the inverted conical hole, and a slit is formed at the lower end of the closing member, the lower end of the closing member being extended in a vertical direction and the lower part being opened. Are formed in the circumferential direction of the closing member, and the slit is used as the through hole.

[Operation] In the above configuration, if the liquid valve is opened, the filling liquid flows through the through hole provided in the closing member and is filled in the container, and the gas in the container escapes to the outside via the gas passage. become. When the liquid level of the filling liquid filled in the container rises and the liquid surface closes the gas passage, the through-hole prevents the gas in the container from escaping due to the surface tension of the filling liquid. The pressure of the gas remaining inside rises, and the filling of the filling liquid is completed. Thereafter, when the liquid valve is closed, the filling liquid passage can be completely closed.

According to the above configuration, the filling liquid passage is provided with an upper large-diameter hole, a lower small-diameter hole, and an inverted conical hole connecting the large-diameter hole and the small-diameter hole, and the liquid valve is provided with the liquid valve. Since the filling liquid passage is opened and closed by being brought into contact with and separated from the inverted conical hole, the filling liquid passage does not have a siphon portion as in the related art, and the filling liquid passage can be formed smoothly. Therefore, unlike the related art, the upward flow that is reversed by the siphon section does not occur, so that the occurrence of turbulence is favorably prevented, and the filling liquid can be smoothly filled in the container.

Further, according to the present invention, a cylindrical closing member surrounding the valve stem is provided in the filling liquid passage upstream of the liquid valve, and the upper inner peripheral surface of the closing member is connected to the outer peripheral surface of the valve stem by the liquid. While keeping the close sliding contact, the lower end of the closing member is brought into contact with the inverted conical hole, and a slit as a through hole is formed at the lower end of the closing member,
The filling liquid flowing down the filling liquid passage flows in the axial direction of the cylindrical closing member and flows smoothly from the outside to the inside through a slit. Since it is open, the filling liquid flows smoothly from the large-diameter hole of the filling liquid passage to the small-diameter hole below along the surface of the inverted conical hole. Therefore, in combination with the absence of the siphon section, the filling liquid can flow smoothly and can be smoothly filled in the container.

Further, since the closing member is provided in the filling liquid passage on the upstream side of the liquid valve, the filling liquid does not remain on the downstream side of the liquid valve unlike the conventional latter filling valve. The filled liquid does not fall into the container at the end of filling or at the start of filling to cause foaming.

"Example" Hereinafter, the present invention will be described with reference to the illustrated embodiment. In FIG. 1, a filling liquid 2 such as a carbonated beverage is stored in a tank 1 and a pressure gas 3 such as carbon dioxide is stored in an upper space thereof. Has been introduced. Filling valves 5 for filling the container 4 with the filling liquid 2 are provided at equal intervals on the outer periphery of the bottom of the tank 1.

Each of the filling valves 5 has a filling liquid passage 8 formed in the valve block 7.
As shown in the figure, the upper large-diameter hole 8a and the lower small-diameter hole 8b
And an inverted conical hole 8c connecting the large-diameter hole 8a and the small-diameter hole 8b, and the large-diameter hole 8a, the inverted conical hole 8c, and the small-diameter hole 8b are smoothly connected. Each of the filling valves 5 includes a valve stem 9 provided in the filling liquid passage 8 so as to be movable up and down and a vent tube 10 provided at a lower end thereof.
The inside of the valve stem 9 and the vent tube 10 is a gas passage 11. An inverted conical liquid valve 12 for opening and closing the filling liquid passage 8 is provided below the valve stem 9.
Normally, the liquid valve 12 is moved downward against the resilience of the spring 13, and the lower end thereof is seated on a valve seat 14 formed in the inverted conical hole 8c of the filling liquid passage 8, whereby the filling is performed. Liquid passage 8
Is closed.

A gas valve 15 for opening and closing the gas passage 11 is attached to the upper end of the valve stem 9.
In cooperation with a cam lever 18 via a rotary shaft 16 and a rotary shaft 17, the rotation of the cam lever 18 normally closes the gas passage 11, and the valve stem 9 and the vent tube 10 are opposed to the repulsive force of the spring 13. By lowering, the liquid valve 12 is seated on the valve seat 14, thereby closing the filling liquid passage 8.

Further, the gas valve 15 is provided with a check valve 19, which allows the flow of the pressure gas 3 from the gas passage 11 to the tank 1 and prevents the reverse flow. I have.

One end of a gas passage 20 is opened in the filling liquid passage 8 at a position downstream of the liquid valve 12, and the other end of the gas passage 20 is normally a topping valve that shuts off the gas passage 20.
The pressure gas 3 in the tank 1 is
It communicates with a supply source (not shown) that supplies a pressure gas having a higher pressure. A snift passage (not shown) for opening the gas passage 20 to the outside is connected between the topping valve 21 and the filling passage 8, and a snift valve 23 for normally closing the snift passage is provided in the snift passage.

A support member 24 attached to a guide rod (not shown) so as to be able to move up and down is provided below each filling valve 5. A guide cone 25 for centering the mouth of the container 4 is attached to the support member 24. I have.

However, as shown in FIG. 2 in an enlarged manner, a cylindrical closing member 31 is arranged in the filling liquid passage 8 so as to coincide with the axis thereof, and the lower end of the closing member 31 is connected to the filling liquid passage 8. 8 and fixed to the valve block 7 by a bridge 32.

The filling member passage 8 is closed with the closing member 31 by allowing the valve stem 9 to pass through the closing member 31 so as to be able to move up and down, and the filling member 2 is filled with the filling liquid 2 into the container 4. A through-hole 33 is formed to prevent the gas in the container 4 from escaping due to the surface tension of the filling liquid 2 at the end of the filling.

As shown in FIG. 3, the through hole 33 is formed of a vertical slit formed at the lower end of the closing member 31. The through hole 33 extends over the entire circumference of the closing member 31 in the circumferential direction. Has formed.

In the above configuration, when the container 4 is lifted by the lifting table (not shown), the container 4 is centered and closed by the guide cone 25, and the lower end of the vent tube 10 is relatively inserted into the container 4. You.

When the arm 16 is raised via the cam lever 18 and the rotating shaft 17 in this state, first, the gas valve 15 is opened, and the pressure gas 3 in the tank 1 flows through the gas passage 11 to the container 4.
Supplied within. When the pressure gas 3 is introduced into the container 4 and the difference between the internal pressure and the pressure in the tank 1 becomes small, the valve stem 9 and the vent tube 10 are raised by the resilience of the spring 13, and the liquid valve 12 Is released from the valve seat 14 to open the filling liquid passage 8.

Then, the filling liquid 2 in the tank 1 flows from the upper part of the filling liquid passage 8 through the through hole 33 of the closing member 31 and fills the container 4. At this time, since there is no need to form a siphon portion in the filling liquid passage 8 as in the related art, the filling liquid passage 8 can be formed smoothly, and the filling liquid is formed in the axial direction of the closing member 31. Flows smoothly from the outside to the inside through the through-hole 33, and the through-hole 33 composed of the slit extends in the up-down direction of the closing member 31 and the lower part is opened, so that the filling liquid is filled. Liquid passage 8
The small hole below the large hole 8a along the surface of the inverted conical hole 8c
Flows smoothly to 8b. Therefore, the filling liquid 2
Is smoothly circulated through the through hole 33 and the filling liquid passage 8 and is filled in the container 4. Further, the gas in the container 4 escapes to the outside via the gas passage 11 with the filling of the filling liquid 2.

When the filling liquid 2 filled in the container 4 closes the lower end opening of the gas passage 11, the through-hole 33 prevents the gas in the container 4 from escaping due to the surface tension of the filling liquid 2.
The pressure of the gas remaining in the container 4 increases, and the filling of the filling liquid 2 ends.

In this state, the arm 16 linked to the cam lever 18 is lowered, and the gas valve 15 is closed to close the gas passage 11, and the valve stem 9 and the vent tube
The liquid valve 12 is seated on the valve seat 14 by lowering 10 and the filling liquid passage 8 is closed.

In this state, the topping valve 21 is opened, and the high-pressure gas in the gas passage 22 is released.
The filling liquid 2 which has been supplied to the upper space in the container 4 through the filling liquid passage 8 and has been filled to a position above the lower end opening of the vent tube 10 by the pressure of the pressure gas.
Is pushed into the gas passage 11 and further discharged into the tank 1 via a check valve 19 provided in the gas valve 15.

Thereafter, when the topping valve 21 is closed, the snift valve 23 is opened and the pressure gas in the upper space in the container 4 is gradually released to the atmosphere, whereby the pressure of the gas in the upper space in the container 4 is reduced. When lowered, the sealing of the container 4 is released by lowering the elevating table.

"Effects of the Invention" As described above, according to the present invention, it is not necessary to provide a siphon portion in the filling liquid passage as in the related art, so that the filling liquid passage can be formed smoothly, and moreover, the filling liquid is The filling liquid flows in the axial direction of the closing member, smoothly flows from the outside to the inside through the slit, and the slit extends in the up-down direction of the closing member and the lower part is opened, so that the filling liquid flows through the filling liquid passage. The fluid flows smoothly from the large-diameter hole to the small-diameter hole below along the surface of the inverted conical hole, and as a result, the effect that the filling liquid can flow smoothly and can be smoothly filled into the container can be obtained. Further, since the closing member is provided in the filling liquid passage upstream of the liquid valve,
The filling liquid does not remain on the downstream side of the liquid valve, so that the remaining filling liquid does not drop into the container at the time of completion of filling or at the start of filling to cause foaming.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention, and FIG.
FIG. 3 is an enlarged view of a main part of the drawing, and FIG. 3 is a front view of the closing member 31. DESCRIPTION OF SYMBOLS 1 ... Tank, 2 ... Filling liquid 4 ... Container, 5 ... Filling valve 8 ... Filling liquid passage, 9 ... Valve stem 10 ... Vent tube, 11 ... Gas passage 12 ... Liquid valve, 14 …… Valve seat 15 …… Gas valve, 31 …… Closed member 33 …… Through hole

Claims (1)

(57) [Scope of request for utility model registration] 1. A filling liquid passage for supplying a filling liquid into a container,
A valve stem provided in the filling liquid passage so as to be movable up and down, a liquid valve provided on the valve stem for opening and closing the filling liquid passage, and flowing the filling liquid into the container when filling the filling liquid; At the end, a through hole that prevents the gas in the container from escaping due to the surface tension of the filling liquid, and when the gas in the container escapes when the filling liquid is filled, and when a predetermined amount of the filling liquid is filled in the container, A filling valve having a gas passage closed by a filling liquid, wherein the filling liquid passage has an upper large-diameter hole, a lower small-diameter hole,
In addition to providing an inverted conical hole connecting the large diameter hole and the small diameter hole, the liquid valve is brought into contact with and separated from the inverted conical hole to open and close the filling liquid passage, and also to fill the liquid upstream of the liquid valve. A cylindrical closing member surrounding the valve stem is provided in the liquid passage, and an upper inner peripheral surface of the closing member is slidably contacted with an outer peripheral surface of the valve stem in a liquid-tight manner, and a lower end portion of the closing member is closed. In contact with the inverted conical hole, a plurality of slits are formed at the lower end of the closing member, which extend in the vertical direction of the closing member and whose lower part is opened, in the circumferential direction of the closing member. A filling valve characterized by a hole.