JP2851465B2 - Liquid filling valve - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid filling valve for filling a liquid beverage such as coffee, tea, or liquor or a chemical into a can or a plastic or glass wide-mouthed container.

[0002]

2. Description of the Related Art A conventional liquid filling valve will be described with reference to FIG. 2. 1 is a liquid storage tank, 2 is a bottom plate of the liquid storage tank 1,
Reference numeral 3 denotes a valve body, and the valve body 3 projects downward from the bottom plate 2 of the liquid storage tank 1. 6 is an exhaust pipe, 31 is a supporting member having a liquid passage a, and the upper and lower middle part of the exhaust pipe 6 is fixed to the bottom plate 2 of the liquid storage tank 1 by the supporting member 31.
The upper end opening of the exhaust pipe 6 is opened above the liquid level 4 in the liquid storage tank 1 and the main liquid nozzle 8
A bulging portion 5 is formed in contact with the lower end opening of the swelling portion.

Reference numeral 8 denotes a main liquid nozzle. The main liquid nozzle 8 is slidably fitted on the inner peripheral surface of the valve body 3 so that a flange portion of the main liquid nozzle 8 and a flange portion of the valve body 3 are formed. And the main liquid nozzle 8 is urged downward. Reference numeral 9 denotes a packing fixed to the lower outer peripheral surface of the main liquid nozzle 8, and the packing 9 abuts on an upper end opening edge of a container 10 placed on a lifter 11, so that the main liquid nozzle 8 and the container 10 The space is sealed by a packing 9.

Next, the operation of the liquid filling valve shown in FIG. 2 will be described with reference to FIG. When the container 10 is lifted by the lifter 11, the upper opening edge of the container 10 comes into contact with the packing 9, the space between the main liquid nozzle 8 and the container 10 is hermetically sealed by the packing 9, and the container 10 is lifted by the lifter 11. Is further raised, the main liquid nozzle 8 is also raised, and a liquid passage is formed between the lower end opening of the main liquid nozzle 8 and the bulging portion 5 of the exhaust pipe 6.

In this state, the liquid in the liquid storage tank 1 is transferred from the liquid passage a of the support member 31 to the main liquid nozzle 8 and the exhaust pipe 6.
To the container 1 along the inner wall surface of the container 10
It flows into 0. On the other hand, the air in the container 10 rises through the air passage c in the exhaust pipe 6, and a space above the liquid level 4 of the liquid storage tank 1 → the liquid storage tank 1 through an exhaust pipe (not shown). It is discharged outside.

Until the liquid level in the container 10 reaches the lower end level (a) of the exhaust pipe 6, the air in the container 10 is exhausted through the air passage c of the exhaust pipe 6. During the period from the lower end level (a) of the exhaust pipe 6 to the final filling liquid level (b), the air in the container 10 flows through the liquid passage b between the main liquid nozzle 8 and the exhaust pipe 6 by an arrow e. And the liquid filling proceeds. Then, after the liquid level in the container 10 reaches the lower end level (final filling liquid level) (b) of the main liquid nozzle 8, the container 10 is lowered by the lifter 11, and the filling is completed.

[0007]

In the conventional liquid filling valve shown in FIGS. 2 and 3, the final liquid level in the container at the time of completion of filling is likely to vary, and the liquid filling valve shown in FIGS. There is a problem that the liquid level difference S occurs and the filling amount differs.
That is, after the filling proceeds and the liquid level in the container 10 reaches the lower end level (A) of the exhaust pipe 6, the air 13 in the container 10
Rises in the liquid passage b between the main liquid nozzle 8 and the exhaust pipe 6 as shown by an arrow e and enters the liquid in the liquid storage tank 1, while the liquid in the liquid storage tank 1 is Since the liquid flows into the container 10 through the liquid passage b between the gas outlet 8 and the exhaust pipe 6, the liquid level in the container 10 rises while shaking, and a part of the liquid level in the container 10 When the main liquid nozzle 8 comes into contact with the lower end level (b), the entire periphery of the lower end opening edge of the main liquid nozzle 8 becomes wet due to the "fluctuation surface tension" of the main liquid nozzle 8, and as shown in FIG. The liquid surface (c) of the liquid is the main liquid nozzle 8
The lower end opening of the main liquid nozzle 8 is closed by the liquid level (c), and the air in the container 10 loses a refuge, and the liquid from the liquid storage tank 1 The flow into the container 10 stops.

The liquid level of the liquid in the container 10 during filling is
Depending on the state of contact with the lower opening edge of the main liquid nozzle 8,
The patterns shown in FIG. 4B also occur, and the patterns shown in FIGS.
The liquid level difference S occurs, and the filling amount is different. The present invention has been made in view of the above problems, and an object thereof is to provide a liquid filling valve capable of reducing variation in filling amount.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a valve body protruding downward from a bottom plate of a liquid storage tank, and a lower end fitted into the valve body and having a lower end. A main liquid nozzle protruding below the lower end of the main body,
The main liquid nozzle is inserted into the valve main body and the upper end opening is opened above the liquid level in the liquid storage tank, and the bulge portion at the lower end abuts on the lower end opening of the main liquid nozzle. A water-repellent portion is formed at a position of the last filling liquid level at the lower end opening of the main liquid nozzle.

[0010]

As described above, the liquid filling valve of the present invention has a water-repellent portion formed at the position of the last filling liquid level at the lower end opening of the main liquid nozzle, so that the liquid level in the container is at the lower level of the main liquid nozzle. Until the air in the container and the liquid in the storage tank can be exchanged, the final liquid level at the end of filling is stable, and the lower end level of the main liquid nozzle and the liquid level of the filling liquid At the same level, filling accuracy is improved. That is, the surface tension acting on the edge of the lower end opening of the main liquid nozzle is reduced by the water repellent portion, and no bridging due to the filling liquid is formed between the outer peripheral lower end surface of the main liquid nozzle and the liquid surface. This prevents the air from being trapped, prevents the liquid filling from stopping halfway, and reduces the variation in the filling amount.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a liquid filling valve of the present invention will be described with reference to an embodiment shown in FIG. 1. 1 is a liquid storage tank, 2 is a bottom plate of the liquid storage tank 1, 3 is a valve body, and 3 is a valve body. Project downward from the bottom plate 2 of the liquid storage tank 1. 6 is an exhaust pipe, 31 is a support member having a liquid passage a, and the upper and lower middle portions of the exhaust pipe 6 are fixed to the bottom plate 2 of the liquid storage tank 1 by the support member 31, and the upper end opening of the exhaust pipe 6 is A swelling portion 5 is formed above the liquid surface 4 in the liquid storage tank 1 and abuts on a lower end portion of the swelling portion 5, which is in contact with a lower end opening portion of the main liquid nozzle 8.

Reference numeral 8 denotes a main liquid nozzle. The main liquid nozzle 8 is slidably fitted to the inner peripheral surface of the valve body 3, and a flange of the main liquid nozzle 8 and a flange of the valve body 3 are provided. And the main liquid nozzle 8 is urged downward. Reference numeral 9 denotes a packing fixed to the lower outer peripheral surface of the main liquid nozzle 8, and the packing 9 abuts on an upper end opening edge of a container 10 placed on a lifter 11, so that the main liquid nozzle 8 and the container 10 The space is sealed by a packing 9.

Reference numeral 12 denotes a water-repellent portion which is the most characteristic feature of the present invention. The water-repellent portion 12 is formed at the position of the last filling liquid level at the lower end opening of the main liquid nozzle 8. The water-repellent portion 12 is formed by subjecting the main liquid nozzle 8 to a water-repellent treatment or using a water-repellent material. Next, the operation of the liquid filling valve shown in FIG. 1 will be specifically described. When the container 10 is lifted by the lifter 11, the upper end opening edge of the container 10 comes into contact with the packing 9, the space between the main liquid nozzle 8 and the container 10 is hermetically sealed by the packing 9, and the container 10 is lifted by the lifter 11. Further rises, the main liquid nozzle 8 also rises,
A liquid passage is formed between the lower end opening of the main liquid nozzle 8 and the bulging portion 5 of the exhaust pipe 6.

In this state, the liquid in the liquid storage tank 1 is transferred from the liquid passage a of the support member 31 to the main liquid nozzle 8 and the exhaust pipe 6.
To the container 1 along the inner wall surface of the container 10
It flows into 0. On the other hand, the air in the container 10 rises through the air passage c in the exhaust pipe 6, and a space above the liquid level 4 of the liquid storage tank 1 → the liquid storage tank 1 through an exhaust pipe (not shown). It is discharged outside.

Until the liquid level in the container 10 reaches the lower end level (A) of the exhaust pipe 6, the air in the container 10 is exhausted through the air passage c of the exhaust pipe 6. During the period from the lower end level (a) of the exhaust pipe 6 to the final filling liquid level (b), the air in the container 10 flows through the liquid passage b between the main liquid nozzle 8 and the exhaust pipe 6 by an arrow e. And the liquid filling proceeds. Then, after the liquid level in the container 10 reaches the lower end level (final filling liquid level) (b) of the main liquid nozzle 8, the container 10 is lowered by the lifter 11, and the filling is completed.

At this time, in the liquid filling valve of the present invention, the water repellent portion 12 is formed at the position of the last filling liquid level at the lower end opening of the main liquid nozzle 8, and the following operation is performed. Until the liquid level in the container 10 reaches the lower end level (b) of the main liquid nozzle 8 in FIG. 4B, the air 13 in the container 10 and the liquid in the liquid storage tank 1 can be exchanged. When the filling is completed, the final liquid level is stabilized, and the pattern shown in FIG. 4B is obtained, and the filling accuracy is improved. In other words, the surface tension acting on the edge of the lower end opening of the main liquid nozzle 8 is reduced by the water repellent portion 12, and no bridging due to the filling liquid is formed between the outer peripheral lower end surface of the main liquid nozzle 8 and the liquid surface. Entrapment of air in the container 10 is prevented, and liquid filling does not stop halfway.

[0017]

As described above, the liquid filling valve of the present invention has a water-repellent portion formed at the level of the final filling liquid level at the lower end opening of the main liquid nozzle. Until the bottom level is reached, the air in the container can be replaced with the liquid in the storage tank, the final liquid level at the end of filling can be stabilized, and the bottom level of the main liquid nozzle and the filling liquid The surface can be at the same level, and the filling accuracy can be improved.
That is, the surface tension acting on the lower end opening edge of the main liquid nozzle is reduced by the water-repellent portion, and a bridge due to the filling liquid is not formed between the outer peripheral lower end surface of the main liquid nozzle and the liquid surface,
Entrapment of air in the container can be prevented, and liquid filling does not need to be stopped halfway, thereby reducing variations in the filling amount.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view showing one embodiment of a liquid filling valve of the present invention.

FIG. 2 is a vertical sectional side view showing a conventional liquid filling valve.

FIG. 3 is an operation explanatory view of the liquid filling valve.

FIG. 4A is an explanatory diagram when a water level difference occurs between a lower end portion of a main liquid nozzle and a surface of a filling liquid, and FIG. 4B is an explanatory diagram when a water level difference does not occur.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 liquid storage tank 2 bottom plate of liquid storage tank 1 3 valve body 4 liquid surface 5 bulging part 6 exhaust pipe 7 spring 8 main liquid nozzle 9 packing 10 container 12 water repellent part 31 supporting member having liquid passage a

──────────────────────────────────────────────────続 き Continuing on the front page (72) Ryoji Tanaka Inventor, Nagoya Koki, Mitsubishi Heavy Industries, Ltd., Nagoya, Aichi Prefecture Koyama character Kitagawada 47 Investigator, Yasuda Giken Co., Ltd. Inspector Hiroyuki Aida (56) References JP-A-3-43394 (JP, A) JP-A 58-143396 (JP, U) JP-A 56-43798 (JP) , U) Japanese Utility Model Application 58-109996 (JP, U) Japanese Utility Model Application 1-76500 (JP, U) Japanese Utility Model Application 57-181225 (JP, U) (58) Fields surveyed (Int. Cl. ⁶ , DB Name) B67C 3/00-3/34

Claims (1)

(57) [Claims] A valve main body protruding downward from a liquid storage tank bottom plate; a main liquid nozzle fitted in the valve main body and having a lower end protruding below the lower end of the valve main body; The upper end opening is inserted above the main liquid nozzle and the valve main body to open above the liquid surface in the liquid storage tank, and a bulging portion that contacts the lower end opening of the main liquid nozzle is provided at the lower end. A liquid filling valve having an exhaust pipe formed therein, wherein a water-repellent portion is formed at a position of a final filling liquid level at a lower end opening of the main liquid nozzle.