JPS636437B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a filling device for injecting a filling liquid into a container, and particularly to a filling device that can be easily cleaned.

"Prior Art" Conventionally, a filling nozzle injects filling liquid into a container through a liquid passage formed inside, a liquid valve that opens and closes the liquid passage, and a gas passage formed inside the container. Filling devices with vent tubes for discharging air are already widely used and well known.

To clean this type of filling device, usually a cup-shaped member is attached to the tip of the filling nozzle to supply cleaning liquid to the liquid passage, and the cleaning liquid is passed from the liquid passage through the cup-shaped member to the gas passage. They are then distributed to other parts of the country to clean each part.

``Problems to be Solved by the Invention'' However, in the case of using such a cleaning means, it is necessary to attach a cup-shaped member to the tip of each filling nozzle, making the work complicated.
Many other known cleaning devices require the attachment of an attachment corresponding to the cup-shaped member described above, and have similar drawbacks.

"Means for Solving the Problems" In view of the above-mentioned drawbacks, the present invention incorporates a cleaning device integrally into the filling device so that cleaning can be easily performed without attaching an attachment such as a cup-shaped member during cleaning. The purpose of the present invention is to provide a filling device that can perform the following steps.

That is, the present invention provides the conventional filling device described above, in which a valve seat is provided at the lower part of the filling nozzle and the vent tube, and a cylindrical opening/closing member that seals the periphery of the liquid passage and the gas passage is provided so as to be movable up and down. The liquid passageway and the gas passageway are opened to the outside when the opening/closing member is seated on the valve seat, and the liquid passageway and the gas passageway are opened to the outside when the opening/closing member is seated on the valve seat. a cleaning valve that closes the valve to the outside, simultaneously connects the liquid passage and the gas passage with each other through the opening/closing member, and further opens the liquid passage when the opening/closing member is seated on the valve seat. It was established.

"Operation" According to the above configuration, when the opening/closing member is removed from the valve seat, the liquid passageway and the gas passageway can be opened to the outside, that is, into the container, so that the liquid valve can be opened. By opening, the filling liquid can be injected into the container through the liquid passage, and the air inside the container can be discharged to the outside through the gas passage.

On the other hand, when the opening/closing member is seated on the valve seat, the liquid passage and the gas passage are closed to the outside, and at the same time, the liquid passage and the gas passage are communicated with each other through the opening/closing member. Therefore, if the cleaning valve is opened in this state, the cleaning liquid supplied into the liquid passage will not leak to the outside and will not flow from the liquid passage to the gas passage or vice versa. It is possible to flow from the liquid passage to the gas passage or vice versa, and therefore the conventional effort of attaching and detaching the cup-shaped member can be omitted.

"Example" The present invention will be described below with reference to the illustrated example.
In FIG. 1, a cylindrical housing 1 of a filling device is shown.
is arranged vertically downward, and the filling nozzle 2 is slidably fitted into the shaft portion from the lower end opening. The filling nozzle 2 includes a large diameter cylindrical member 3 that is slidably fitted into the housing 1, an opening/closing member 5 that is a diameter cylindrical member that is inserted into the container 4,
The opening/closing member 5 includes a sealing member 6 which is provided at a position on the outer periphery above the lower end opening and seals the opening of the container 4.

A slit 7 is formed in the large diameter cylindrical member 3 of the filling nozzle 2 in the axial direction.
A support member 8 fixed inside the filling nozzle 2 is inserted through the slit 7, and a vent tube 9 is fixed to the tip thereof, that is, to the shaft of the filling nozzle 2. The inside of this vent tube 9 is a gas passage 10,
Its upper end projects above the housing 1, and its lower end passes through the opening/closing member 5 of the filling nozzle 2 and projects downward.

Liquid passage 14 formed in the shaft portion of the housing 1
The upper part communicates with the filling liquid tank that stores the filling liquid through a passage (not shown), and the lower part communicates with the filling nozzle 2 and the vent tube 9 through the main liquid valve 15 that opens and closes this liquid passage 14 and the slit 7.
It communicates with the gap between. Main liquid valve 15 above
The actuating cylinder member 1 has the upper end of the large diameter cylindrical member 3 slidably provided on the outer periphery of the housing 1 and the vent tube 9 so as to protrude from the upper part of the housing 1.
6, and between the housing 1 and the large diameter cylindrical member 3 and between the large diameter cylindrical member 3.
and the actuating cylinder member 16 with a seal member 1, respectively.
When the slit 7 is positioned below the seal member 17, the liquid passage 14 is blocked by the seal member 17, and when the slit 7 is positioned above the seal member 17, the liquid passage 14 is blocked. When the liquid passage 14 is opened through the slit 7
I am trying to be able to communicate with you.

As shown in an enlarged view in FIG. 2, a valve seat member 19 constituting the auxiliary liquid valve 18 is integrally fixed to the lower end of the vent tube 9, and the lower end of the vent tube 9 is attached to the upper part of the valve seat member 19. The cylindrical member 20 is fixed so that the cylindrical member 20
The distance between the vent tube 9 and the vent tube 9 is defined as the liquid passage 14. An opening 21 is formed in this cylindrical member 20 to allow the filling liquid from the liquid passage 14 to flow through the opening 21.
The container 4 can be filled from there. On the other hand, the lower end of the vent tube 9 has an opening 2 formed in the vent tube 9 and the cylindrical member 20.
It communicates with the outside via 2.

Valve seat member 19 at the lower end of the vent tube 9
A seal member 27 is provided on the valve seat formed in the valve seat, and a spring 28 is elastically mounted between the housing 1 and the filling nozzle 2. Usually, the opening/closing member 5 is seated on the valve seat member 19, and the seal The member 27 closes the sub-liquid valve 18. In this state, the opening/closing member 5 simultaneously closes the opening of the liquid passage 14, that is, the opening 21 of the cylindrical member 20, and the opening of the gas passage 10, that is, the opening 22 of the cylindrical member 20. is also closed. Then, an annular groove 29 is formed as a communication path on the inner peripheral surface of the opening/closing member 5, and this annular groove 29
The liquid passage 14 and the gas passage 10 can be communicated with each other via.

Further, the operating cylinder member 16 provided on the outer periphery of the vent tube 9 is urged downward by a spring 30, and normally its lower end is attached to the supporting member 8.
It is held in a position where it touches the A communication hole 31 is bored in the large-diameter cylindrical member 3 of the filling nozzle 2 at a position above the main liquid valve 15 when the main liquid valve 15 is closed.
6. The communication hole 31 and the seal member 17 constitute a cleaning valve 32 that opens the liquid passage 14 during cleaning.

In addition, a guide rod 35 is provided at the bottom of the housing 1.
A container guide member 36 is provided at the lower end of the guide rod 35 to guide and center the mouth of the container 4.

In the above configuration, normally the main liquid valve 15,
The secondary liquid valves 18 are both closed, and the filling nozzle 2
The opening/closing member 5 and the cleaning valve 32 are also in a closed state. In this state, as described above, the liquid passage 14 and the gas passage 10 communicate with each other via the annular groove 29, but since the main liquid valve 15 is closed, the filling liquid does not flow into the gas passage 10. is prevented.

When the container 4 is raised from this state by a lifting table (not shown), the container 4 is guided by the container guide member 36 and centered on the filling nozzle 2, and the mouth of the container 4 is pressed against the sealing member 6. It will be sealed. When the container 4 continues to be raised in this state, the filling nozzle 2 is raised against the elastic force of the spring 28, and both liquid valves 15 and 18 are opened. As a result, the filling liquid is filled into the container 4 through the opening 21 through the slit 7, and the air inside the container 4 is discharged to the outside through the gas passage 10.

As the filling of the filling liquid progresses and the liquid level in the container 4 closes the opening of the gas passage 10, the pressure in the space remaining in the container rapidly increases, so that the injection of the filling liquid is stopped. When the container is lowered from this state, the filling nozzle 2 is lowered by the spring 28 and closes both liquid valves 15 and 18, thus completing the filling operation.

However, in order to clean the filling device having the above configuration, the operating cylinder member 166 is
is raised against the spring 30. Then, the cleaning valve 32 opens, so if cleaning liquid is supplied to the liquid passage 14 in this state, the cleaning liquid flows from the liquid passage 14 through the annular groove 29 and flows into the gas passage 10, so that each part is cleaned. Can be washed.

It goes without saying that the direction of flow of the cleaning liquid may be reversed to that described above. Further, the liquid valve 15 and the cleaning valve 32 do not necessarily need to be provided separately, and for example, the liquid valve 15 may be composed of a solenoid valve or the like.
If it can be opened and closed at any time, it can serve both purposes. Further, the opening/closing member 5 does not need to be operated all the time, and may be left open during normal filling operation and closed only during cleaning.

"Effects of the Invention" As described above, according to the present invention, cleaning work can be performed simply by seating the opening/closing member on the valve seat, so there is no need to attach an attachment such as a cup-shaped member during cleaning as in the conventional method. The effect is that the cleaning work can be easily performed without any problems.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing one embodiment of the present invention, and FIG.
The figure is an enlarged sectional view of the main part of FIG. 1. 1...Housing, 2...Filling nozzle, 4...
Container, 5...Opening/closing member, 9...Vent tube,
10... Gas passage, 14... Liquid passage, 15, 18
... Liquid valve, 19 ... Valve seat member, 29 ... Annular groove, 32 ... Washing valve.

Claims (1)

[Scope of Claims] 1. A filling nozzle that injects filling liquid into the container through a liquid passage formed inside, a liquid valve that opens and closes the liquid passage, and a gas passage formed inside the container. A filling device equipped with a vent tube for discharging air, wherein a valve seat is provided at the bottom of the filling nozzle and the vent tube, and a cylindrical opening/closing member that seals around the liquid passage and the gas passage can be raised and lowered. When the opening/closing member is removed from the valve seat, the liquid passage and the gas passage are opened to the outside, and when the opening/closing member is seated on the valve seat, the liquid passage and the gas passage are opened to the outside. Cleaning in which the gas passage is closed to the outside, the liquid passage and the gas passage are communicated with each other through the opening/closing member, and the liquid passage is opened when the opening/closing member is seated on the valve seat. A filling device characterized by being equipped with a valve.