JP2537489Y2 - Liquid filling device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a liquid filling device, and more particularly to a liquid filling device for filling various liquids in a predetermined container.

[Conventional technology]

2. Description of the Related Art Conventionally, a liquid filling apparatus for filling various liquids such as juice into a predetermined container has been widely used.

In such a conventional liquid filling apparatus, a check valve that is opened and closed by an air cylinder or the like is provided inside a cylindrical main body, and the check valve is opened and closed together with the check valve at a liquid filling port portion of the main body. And an on-off valve having an outer diameter substantially equal to the inner diameter of the main body. With this on-off valve, liquid remaining inside the cylindrical main body on the downstream side of the check valve is held at surface tension.

In the liquid filling apparatus, first, in a state where a predetermined container is arranged at a predetermined position below the filling port of the main body, the liquid is supplied from the liquid storage tank to the inside of the main body, and then the air cylinder is operated. Thus, the check valve is opened, and accordingly, the on-off valve is also opened. Thereby, the liquid flows out from the filling port of the main body and is filled in the container.

[Problems to be solved by the invention]

However, in the conventional liquid filling apparatus, the liquid is filled from the filling port of the main body by the opening and closing operation of the on-off valve.
Since the opening / closing operation is repeated, the opening / closing valve or the main body is scratched due to the metal. As a result, the filling liquid cannot be held due to surface tension, and dripping of the filling liquid occurs from between the outer periphery of the on-off valve and the inner periphery of the filling port, and as a result, excess liquid on the surface of the container. There is a problem that it adheres and causes contamination of the container. In addition, for example, when filling a liquid mixed with solids, such as juice containing pulp, when the rigid body of the metals is entangled with the fibers of the solids, etc. There is a problem that liquid dripping occurs.

The present invention has been made in view of the above points, and even when filling a liquid mixed with a solid substance, it is possible to reliably prevent the occurrence of dripping and to ensure the proper liquid It is an object of the present invention to provide a liquid filling device capable of performing a filling operation.

[Means for solving the problem]

In order to achieve the above object, a check valve is provided in the tubular main body according to the present invention so as to be capable of opening and closing, and an open / close valve that is opened and closed together with the check valve is provided at a liquid filling port of the main body. In the liquid filling device provided, an elastic ring formed to have a slightly larger diameter than the inner diameter of the filling port is attached to the outer periphery of the tip of the on-off valve, and when the on-off valve is closed, the elastic ring is It is characterized in that it is housed in the main body while its diameter is reduced.

[Action]

According to the present invention, since the elastic ring having an outer diameter slightly larger than the inner diameter of the filling port of the main body is attached to the outer periphery of the on-off valve, the elastic ring is filled when the on-off valve is closed. The elastic ring is deflected by being brought into contact with the edge of the opening and further closing the opening / closing valve, is brought into circumferential contact with the inner peripheral surface of the filling opening, and the excess attached to the edge of the filling opening. Fibers such as fresh liquid and pulp can be scraped off by the elastic ring, and the tip of the filling port can be sealed in a liquid-tight manner to prevent liquid dripping.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 shows an embodiment of the present invention, in which a liquid filling apparatus has a cylindrical main body 1 and a storage section (not shown) for storing a predetermined liquid in a middle portion of the main body 1. A supply port 2 for supplying a liquid supplied from a tank or a metering piston to the inside of the main body 1 is formed. The lower end of the main body 1 is a liquid filling port 3, and a swelling part 4 having a slightly larger diameter is provided between the supply port 2 and the filling port 3 of the main body 1. Are formed.

A valve seat 5 is formed on the inner surface of the upper portion of the bulging portion 4 so as to expand downward.
Inside, a check valve 6 having a tapered shape whose peripheral surface has a larger diameter toward the lower side and which is freely movable toward and away from the valve seat 5 is provided. An air cylinder 7 is mounted on an upper end of the main body 1, and a driving rod 8 of the air cylinder 7 extends downward along a central axis of the main body 1. A rod 18 is provided at the lower end of the drive rod 8 via a joint 17. Further, the check valve 6 is coaxially fixed to the rod 18 so that the air cylinder 7 is operated and the drive rod 8 is moved.
By moving the rod 18 forward and backward, the check valve 6 is moved up and down, and the check valve 6 is opened and closed.

Further, the filling port 3 is provided on the lower surface of the check valve 6.
A connecting rod 9 extending in the vicinity is attached, and the connecting rod 9 is held on the central axis of the main body 1 on the inner surface of the main body 1 and between the bulging portion 4 and the filling port 3. A guide plate 10 is provided. On the lower end of the connecting rod 9, an on-off valve 11 having a substantially Y-shaped cross-section and having a lower peripheral edge slightly smaller than the inner diameter of the filling port 3 of the main body 1 is integrally formed. Have been. As shown in FIGS. 2 to 4, an elastic ring 12 made of an elastic material such as rubber and having an outer diameter slightly larger than the inner diameter of the filling port 3 is provided on the peripheral edge of the lower end of the on-off valve 11. Is provided around. The elastic ring 12 is attached, for example, by engaging an engagement concave portion formed on the elastic ring 12 with an engagement projection projecting from the outer periphery of the on-off valve 11.

 Next, the operation of the present embodiment will be described.

First, in a state in which a container (not shown) is arranged at a predetermined position below the filling port 3 of the main body 1, the liquid is sent from the liquid storage tank to the inside of the main body 1 from the supply port 2 through a quantitative device such as a piston (not shown). At the same time, by operating the air cylinder 7 to drive the drive rod 8 and the rod 18 downward, the check valve 6 is moved downward, separated from the valve seat 5 and the check valve 6 is opened. Accordingly, as shown in FIG. 2, the connecting rod 9 is also lowered and the on-off valve 11 is opened. As a result, the liquid flows downward through the bulging portion 4, flows out of the filling port 3, and is filled in the container.

When the filling of the liquid is completed, the air cylinder 7 is driven to raise the drive rod 8 and the rod 18, so that the check valve 6 comes into contact with the valve seat 5 to close the valve, and the open / close valve is opened. 11 is retracted and the filling port 3 is closed.

At this time, since an elastic ring 12 having an outer diameter slightly larger than the inner diameter of the filling port 3 is attached to the tip of the on-off valve 11, when the on-off valve 11 is raised,
As shown in FIG. 3, the elastic ring 12 contacts the lower edge of the filling port 3. Further, by raising the on-off valve 11, as shown in FIG. 4, the elastic ring 12 is bent and comes into circumferential contact with the inner peripheral surface of the filling port 3, so that the sealing performance is improved, The elastic ring 12 scrapes off excess liquid and fibrous material such as flesh attached to the lower edge of the filling port 3.

Therefore, in the present embodiment, at the time of the closing operation of the on-off valve 11, the elastic ring 12 is used to scrape off excess liquid or pulp or other fibrous material attached to the lower edge of the filling port 3. The fibrous material or the like does not become entangled with the filling port 3 and the dripping of the liquid from the filling port 3 can be reliably prevented. In addition, since the portion in contact with the filling port 3 is formed of an elastic material, it is possible to prevent the occurrence of scratches and dripping.
As a result, the container can be prevented from being stained by the dripping, and an appropriate liquid filling operation can be performed.

The present invention is not limited to the above-described embodiment, but can be variously modified as needed.

[Effects of the Invention] As described above, the liquid filling apparatus according to the present invention has an elastic ring attached to the outer periphery of the on-off valve, and this elastic ring allows extra liquid attached to the lower edge of the filling port to be closed when the on-off valve is closed. Since the fibrous material such as fresh liquid and pulp is scraped off, the fibrous material does not become entangled with the filling port portion, and the dripping of the liquid from the filling port can be reliably prevented. In addition, since the portion in contact with the filling port is formed of an elastic material, the tip of the filling port can be sealed in a liquid-tight manner, the occurrence of scratches can be prevented, and the liquid can be prevented from dripping. As a result, it is possible to prevent the container from being stained by the dripping, and to achieve effects such as performing an appropriate liquid filling operation.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment of the present invention, FIG. 2 is an enlarged sectional view of the opening / closing valve portion of FIG.
FIG. 4 is an enlarged sectional view of the opening / closing valve portion in FIG. 1 in the middle of the closing operation, and FIG. 4 is an enlarged sectional view of the opening / closing valve portion in FIG. 1 during the closing operation. DESCRIPTION OF SYMBOLS 1 ... Body, 2 ... Feeding port, 3 ... Filling port, 5 ... Valve seat, 6 ... Check valve, 7 ... Air cylinder, 11 ... Open / close valve, 12 ... Elastic ring.

Claims (1)

(57) [Scope of request for utility model registration] 1. A check valve is provided inside a cylindrical main body so as to be openable and closable, and an open / close valve which is opened and closed together with the check valve is provided at a liquid filling port of the main body. In the liquid filling device, an elastic ring formed with a diameter slightly larger than the inner diameter of the filling port is attached to the outer periphery of the tip of the on-off valve, and when the on-off valve is closed, the outer diameter of the elastic ring is reduced. A liquid filling device, wherein the liquid filling device is housed in a main body.