JPH07156902A - Liquid charging nozzle - Google Patents

Abstract

PURPOSE:To prevent the whole liquid in a nozzle from flowing out without further outflow of the charging liquid in a delivery pipe, even the charging liquid in one of a plurality of delivery pipes drops and flows out. CONSTITUTION:A charging liquid is supplied to the upper end openings of a plurality of vertical delivery pipes 13 through a supply means 11, 12. The supply paths by the supply means 11, 12 to the delivery pipes 13 are independently opened or closed by an opening and closing means 16. The charging liquid is prevented from flowing out due to the own weight, because of the surface tension of the charging liquid in the delivery pipe 13, in the state of the supply path closed by the closing means 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid filling nozzle used for filling a liquid, particularly a liquid containing fibrous material, or a liquid which easily solidifies.

[0002]

2. Description of the Related Art As a filling nozzle of this type, a metering cylinder having a built-in piston, a vertical cylindrical nozzle body into which a fixed amount of the metering liquid is fed by a piston operation from the metering cylinder, and a nozzle body The lower end opening is provided with a plurality of vertical discharge pipes that are bundled and connected to the upper end opening, and due to the surface tension of the filling liquid in the discharge pipe when the feeding by the piston is stopped It is known that the outflow is prevented.

[0003]

In the above-mentioned conventional nozzle, the filling liquid in the vicinity of the lower end opening of any one of the plurality of discharge pipes may drip and flow out due to a mechanical shock acting on the filling nozzle. . Since the discharge pipe that drip outflow is connected to other discharge pipes through the nozzle body,
When the downward flow of the filling liquid occurs in the same discharge pipe due to the force of dripping and flowing out, the filling liquid in the other discharge pipes flows into the same discharging pipe, so that the filling liquid in all the discharging pipes passes through the discharging pipe that dropped and flows out. Will flow out, and eventually all the filling liquid in the nozzle will flow out.

An object of the present invention is to provide a method in which, even if the filling liquid in any one of the plurality of discharge pipes drops and flows out,
The purpose of the present invention is to provide a filling nozzle in which the filling liquid in the discharge pipe does not flow out any more and the filling liquid in all other discharge pipes does not flow out due to the influence thereof.

[0005]

A liquid filling nozzle according to the present invention comprises a plurality of vertical discharge pipes and a supply means for supplying a filling liquid to the upper end openings of these discharge pipes. In the liquid filling nozzle configured to prevent the filling liquid from flowing out due to its own weight due to the surface tension of the filling liquid, the liquid filling nozzle is provided with opening / closing means for individually opening / closing the supply passage to each of the discharge pipes. To do.

The cross section of the discharge pipe may be circular, elliptical, polygonal or the like, and its shape is arbitrary.

When the discharge pipe has a circular cross section, its diameter is preferably 3 to 10 mm. If it is less than 3 mm, clogging tends to occur, and if it exceeds 10 mm, effective use of surface tension cannot be expected. When the cross section of the discharge pipe is other than circular, it is preferable that the cross sectional area is equivalent to a circle.

[0008]

Since the liquid filling nozzle according to the present invention is provided with the opening / closing means for individually opening / closing the supply passage to each of the discharge pipes by the supply means, any one of the plurality of discharge pipes is provided.
Even if the filling liquid in one of the discharge pipes drip and flows out, the discharge pipe and the other discharge pipes are closed by the closing means and are not communicated with each other.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

<Embodiment 1> As shown in FIG. 1, a filling nozzle according to Embodiment 1 has a closed box-shaped header tank 12 in which one end of a filling liquid supply pipe 11 is connected to a side wall and a zigzag shape in plan view. A plurality of vertical discharge pipes 13 arranged and connected to the bottom wall of the header tank 12 in a penetrating manner at the upper end, and vertically installed downward on the top wall of the header tank 12 and penetrating through the top wall. A fluid pressure cylinder 15 having a piston rod 14, and a horizontal disc-shaped opening / closing member 16 fixed to the lower end of the piston rod 14 so as to be in close contact with the upper end surface of the discharge pipe 13.
And consists of.

The filling liquid supply pipe 11 is provided with a pump (not shown), the filling liquid is forcibly sent to the header tank 12 by the operation of the pump, and the inside of the header tank 12 is constantly filled with the filling liquid. . The lower surface of the opening / closing member 16 is covered with a rubber plate packing material 17.

Referring to FIG. 2, a closing member 16 is in close contact with the upper end surface of the discharge pipe 13. In this state, the surface tension of the filling liquid in the discharge pipe 13 prevents the filling liquid from flowing out due to its own weight. The cross section of the discharge pipe 13 is
It is circular and has a diameter D of 8 mm.

When the container is carried in directly below the discharge pipe 13 by a conveyor (not shown), the opening / closing member 16 which is in close contact with the upper end surface of the discharge pipe 13 is lifted by the operation of the cylinder 15. Then, the filling liquid in the header tank 12 is discharged into the discharge pipe.
Spilled into container through 13. When the container is filled with a predetermined amount of liquid, the opening / closing member 16 is activated by the operation of the cylinder 15.
Is lowered and brought into close contact with the upper end surface of the discharge pipe 13. Then, the filling liquid supply path to the upper end opening of the discharge pipe 13 is blocked, and the filling liquid left in the discharge pipe 13 is prevented from flowing out due to its surface tension.

It is assumed that a mechanical impact or the like is applied to the filling nozzle and the impact causes the filling liquid in any one of the discharge pipes 13 to flow out. Even in this case, since the upper end openings of all the discharge pipes 13 are still closed by the opening / closing member 16, the inside of the header tank 12 is not communicated with the atmosphere, so that the liquid in the header tank 12 does not flow out, The filling liquid in the other discharge pipe 13 remains held in the discharge pipe 13 as it is due to the surface tension.

<Embodiment 2> As shown in FIG. 3, a filling nozzle according to Embodiment 2 includes a horizontal header pipe 21 and a header pipe 21.
A plurality of vertical discharge pipes 22 arranged in a line in the length direction of the header pipe 21, a plurality of positions in the length direction of the header pipe 21, and the upper end of the discharge pipe 22. About the same number of discharge pipes 22 that are connected to each other, and a substantially inverted J-shaped rubber communication pipe 23
And a fluid pressure cylinder having a piston rod 24 horizontally disposed on the side of the communication pipe 23 and extending toward the communication pipe 23.
25, a horizontal rod-shaped opening / closing member 25 fixed to the tip of the piston rod 24, and a horizontal angle member receiving member 27 arranged on the opposite side of the opening / closing member 25 with the communication pipe 23 interposed therebetween.

The operation of the cylinder 25 causes the piston rod
When 24 is projected, the opening / closing member 25 is pressed against the receiving member 27 via the communication pipe 23. Then, a part of the communication pipe 23 is crushed so as to cut off the flow path of the communication pipe 23, whereby the filling liquid supply passage to the upper end opening of the discharge pipe 22 is cut off.

[0017]

According to the present invention, even if the filling liquid in any one of the plurality of discharge pipes drops and flows out, the discharge pipe and the other discharge pipes are closed by the closing means.
Since they are not communicated with each other, the filling liquid that has dripped and flowed out does not flow out any more, and there is no fear that all the liquid inside the nozzle will flow out.

[Brief description of drawings]

FIG. 1 is a perspective view including a crushing cross section of a filling nozzle according to a first embodiment of the present invention.

FIG. 2 is a partially enlarged vertical vertical sectional view of the filling nozzle.

FIG. 3 is a perspective view of a filling nozzle according to a second embodiment of the present invention.

FIG. 4 is a perspective view of the filling nozzle.

[Explanation of symbols]

 11 Supply pipe 12 Header tank 13 Discharge pipe 16 Opening / closing member 21 Header pipe 22 Discharge pipe 26 Opening / closing member

Claims (1)

[Claims] 1. A plurality of vertical discharge pipes (13, 22) and a supply means (11) for supplying a filling liquid to the upper end openings of these discharge pipes (13, 22).
In the liquid filling nozzle, which is provided with 12, 21 and is configured such that the surface tension of the filling liquid in the discharge pipes 13, 22 prevents the filling liquid from flowing out due to its own weight, A filling nozzle characterized by comprising opening / closing means (16, 26) for individually opening / closing a supply path to each of the discharge tubes (13, 22).