JP3866937B2 - Inlet / discharge tap - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a stopper in which a fluid inlet with a check valve and an outlet are integrally formed.
[0002]
[Prior art]
Normally used plugs have no problem when the fluid to be sealed is liquid, but in the case of gas, there is a drawback that the gas flows out after being injected after the required amount is injected.
Therefore, many check valves made of film are used as stoppers for flexible and flat containers, and are one-way backflow prevention type.
This is very convenient because it is flat and not bulky, and is easy to install.
However, normally, a straw or the like is inserted to discharge the sealed fluid, and the tight valve is expanded to form a flow path and discharge.
[0003]
Of course, there is a disadvantage that it is impossible to discharge unless a straw or the like is at hand, and the discharging straw cannot be discharged unless the leading end of the straw goes out into the bag body via the tip of the check valve protruding into the bag body. If the check valve formed in (1) has a high filling pressure in the airtight body, the check valve is deformed as if twisted near the upper mounting part, preventing the straw from being inserted, causing the valve to be damaged due to excessive insertion. .
Moreover, if the insertion of the straw is repeated many times, there is a drawback in that the extension wrinkles are attached to the film, the degree of adhesion is reduced, and the function of the check valve is lowered.
Therefore, it is necessary to provide a separate discharge plug as an improvement measure.
[0004]
[Problems to be solved by the invention]
Taking advantage of the check valve, there is no need to insert a straw that causes leakage, and the injection and discharge are integrated with a single stopper.
[0005]
[Means for Solving the Problems]
The injection / discharge port is integrated, and a check valve is attached to the tip of the injection port protruding into the bag body, and an upper portion of the check valve and a mounting portion of the injection / discharge plug body attached to the peripheral weld portion of the bag body An inner discharge port is provided in the outer cylinder and the inner cylinder, and the inner discharge port can be freely opened and closed.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
A check valve is attached to the tip of the outer cylinder, which is composed of an outer cylinder and an inner cylinder and protrudes into the bag body, and an attachment part of the check valve and an attachment part of the outer cylinder attached to the peripheral weld part of the bag body A discharge opening is provided in between, and the inside and outside of the bag communicate with each other via the outer cylinder opening and the inner cylinder opening, and are discharged.
Then, the handle on the upper part of the inner cylinder is rotated, and the positions of the outer cylinder opening and the inner cylinder opening are shifted and closed.
[0007]
【Example】
Although the partially cutaway view shown in FIG. 4 shows the attachment of the check valve 3, the main component of the present invention is the fluid injecting and discharging method, and therefore the configuration and function of the check valve are omitted.
[0008]
The outer cylinder 4 has an outer cross-section formed in a rhombus, facilitating the welding of the airtight body peripheral weld and the check valve , and the upper part forms the girder ring 10 and is the upper part of the inner cylinder 5 that is inserted inside The outer periphery of the handle 11 and the upper part of the handle 12 are surrounded and protected. The upper part of the handle 12 is projected to facilitate the rotation operation, and the cap 13 is shown in FIG. 4 but is not necessarily required because it can be protected by the girder ring 10.
[0009]
A stopper 8 is formed at the lower part of the inner cylinder 5, and a notch 9 having a slight length is provided above the lower end.
When the inner cylinder 5 is inserted into the outer cylinder 4 from above, the notch 9 narrows the gap and passes through the inside of the outer cylinder 4. After passing, the gap is restored, and the insertion position is determined by the flange 11 and the stopper 8, and the heights of the outer cylinder outlet 6 and the inner cylinder outlet 7 match.
[0010]
When the handle 12 is turned, the inner cylinder discharge port 7 rotates and is removed from the outer cylinder discharge port 6 and closed, and as in FIG. 1, it becomes a mechanism of only a check valve, and when the handle 12 is turned counterclockwise, the inner cylinder discharge port 7 rotates. The outer cylinder discharge port 6 is matched, and the inside and outside of the bag body communicate with each other so that the bag can be discharged.
【The invention's effect】
Since the injection / discharge plug according to the present invention has a check valve dedicated to injection, the original function of the check valve is fully exerted without damaging even repeated use, and the discharge is a separate discharge mechanism not related to the presence of the check valve, In addition, since the injection and discharge are integrated, the material cost and processing cost are low, and the operation is also simple.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a partially cutaway front view showing an example of a conventional airtight bag with a check valve.
FIG. 2 is a front view showing an inner cylinder fitted into an outer cylinder of one part of an injection / discharge stopper.
FIG. 3 is a front view of an inner cylinder of one part of an injection / discharge plug.
4 is a bottom view of FIG. 2. FIG.
FIG. 5 is a plan view of FIG. 3;
FIG. 6 is a partially cutaway front view showing a state in which the injection / discharge tap of the present invention is attached to an airtight bag.
[Explanation of symbols]
1 Airtight bag
2 peripheral seal
3 Check valve
4 outer cylinder
5 inner cylinder
6 Outer cylinder outlet
7 Inner cylinder outlet
8 Stopper
9 notches
10 girder rings
11 brim
12 handle
13 cap

Claims (1)

A stopper formed at the bottom of the inner cylinder, consisting of an outer cylinder whose inner surface is a perfect circle and a perfect circular and hollow inner cylinder that is inserted in close contact with the inner cylinder. The lower incision gap narrows, passes through the inner surface of the outer cylinder and is opened and restored at the lower edge of the outer cylinder. Joined to the peripheral weld of the airtight bag, a check valve is connected to the lower part, and a fluid discharge opening is formed between the joint of the outer cylinder with the upper airtight bag and the joint of the lower check valve. An injection / discharge plug characterized in that the same type of discharge opening is also provided in the inner cylinder facing the opening and a handle for rotating the inner cylinder is provided on the upper surface of the flange.

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