JPH1089499A - Flexible passage valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily open/close a valve by sandwiching an intermediate gate valve composed of a flexible film between both obverse and reverse walls to constitute a flexible passage, connecting its both sides to both obverse and reverse walls, and forming a valve blade to be brought in close contact even with either wall to the intermediate gate valve by being elastically deformed in a bow shape. SOLUTION: A water storage bag P constitutes a flexible passage valve by sandwiching intermediate gate valve 5 between both side surface walls 2 and 3, and when both obverse and reverse walls 2 and 3 are adhered together at the edge over a periphery, a bag is constituted, and in an outlet part, the intermediate gate valve 5 is sandwiched by edge adhesion of both surface walls 2 and 3, and both sides are adhered together at the same time, and the outlet side lower edge 7 is adhered to the obverse wall 2. Then, water in the bag is drained by passing through between the reverse wall 3 and the intermediate gate valve 5, and at this time, the intermediate gate valve 5 is brought into close contact with the obverse wall 2. When the upper edge of a valve blade 9 part is brought into close contact with the reverse wall 3, the flexible passage valve is closed, and in the case where a closed condition is released, when a valve blade 9 is warped so as to grip a flexible passage 1, it is brought into close contact with the obverse wall 2, and the passage is opened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible passage valve for opening and closing a tubular passage made of a flexible plastic film such as vinyl.

[0002]

2. Description of the Related Art There are various types of valves, such as globe valves, gate valves, check valves, regulating valves, cocks, and the like. These are generally connected to the middle or end of piping. Structurally, it is basically based on a valve box connected to piping, and is provided with a valve seat provided therein, a valve element that opens and closes the valve seat, a valve stem that operates the valve element, and the like.

In a flexible passage such as an outlet of a water bag made of vinyl, rubber, or the like, a mechanical valve as described above cannot be formed.
Such a valve, for example a cock, was attached.

[0004]

When an existing valve is attached to a flexible passage as described above, the cost is unavoidable because of the large number of parts and the complicated structure. In addition, since the valve in the flexible bag is a foreign matter as one lump, it often does not fit into the flexible passage, and there is a possibility that the passage or the bag may be damaged. And so on.

Since the check valve has a relatively simple structure that closes the valve by the pressure of the fluid, it may be incorporated into a flexible tube in a check valve mechanism such as that found in a bladder. However, in order to open the valve, a troublesome operation such as pressing the valve with a linear instrument from the mouth of the tube is required.

The present invention has been made in view of the above-described circumstances,
It is an object of the present invention to provide a flexible passage valve which has a simple structure with a small number of parts and can be flattened, and can open and close the valve by an easy operation.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention is to provide a flexible valve having a flexible gate and a partition valve formed of a flexible film interposed between both front and rear walls. Both sides are connected to the front and back side walls, and furthermore, a valve blade is formed on the intermediate gate valve so as to selectively elastically deform and adhere to both the front wall and the back wall between both connections. Thus, a flexible passage valve is constructed.

The valve blade is brought into close contact with the front and back side walls in an arc by the narrowing between the connection points.
It is particularly effective to achieve the object if there is provided a circumferential difference where the dimension between the connection points on the contact surface is slightly longer than the front and back side walls of the valve blade.

The downstream end of the intermediate gate valve is connected to the front wall so that water cannot pass therethrough, and the valve blade is configured to close water to the back wall to stop water, thereby forming a flexible passage valve for DC opening and closing. be able to.

[0010] Further, by making the middle gate valve freely releasable from the front and back side walls, a bifurcated branch is formed downstream of the flexible passage, and the branch on the side where the valve blade is in close contact with either the front or back wall is reduced. It is possible to provide a flexible passage valve for split flow opening and closing by being configured to stop water.

In a flexible passage valve for DC opening and closing, a connecting piece projecting in a mountain shape above the valve blade is formed at the upper end of the intermediate valve, and the tip of the connecting piece is adhered to the back wall. It is more effective to achieve the object if the valve blade is easily bent toward the back wall side.

[0012]

According to the above construction, since the middle gate valve is sandwiched between the front and back side walls, it is easy to close and the flattening is possible, and the valve blade of the middle gate valve is operated to bend and invert. Can open and close the passage, and in the case of a flexible passage valve for DC opening and closing, the intermediate gate valve is opened to the back wall in the direction of cylinder removal, so water can flow from there between The filling and discharging of the liquid are performed during that time. If the valve blade is bent to the front wall and kept in the discharge state, the state is maintained by the discharge pressure. Conversely, if the valve blade is bent to the back wall and kept in the water-stop state, the state is maintained by the internal pressure. Is held. In the case of a flexible passage valve for split flow opening / closing, since the intermediate gate valve is opened to both side walls, the flow split on the curved side of the valve blade is closed and the split flow on the opposite side is opened.

Such switching of the valve blade is basically performed by an external pressure of a finger or the like. In the case of a flexible passage valve for DC opening and closing, a connecting piece to a surface wall is provided on the valve blade, If the blade has a habit, the discharge pressure or the internal pressure causes the valve blade to naturally switch to the water stop side. In this specification, the distinction between “front and back” between the front wall and the rear wall is for convenience of explanation, and there is no special distinction.

[0014]

Next, an embodiment of the present invention will be described with reference to the drawings.

FIGS. 1 to 11 show one example of a flexible passage valve for opening and closing a direct current, in which FIG. 1 is an exploded perspective view schematically showing an assembly of a water storage bag P as an embodiment. FIG. 2 shows the water storage bag P, and FIGS. 3 to 11 show how to open and close the water stop flexible passage valve provided in the flexible passage 1 at the narrow outlet portion of the water storage bag P. The implementation target is not limited to the water storage bag, but varies.

The water storage bag P has a flexible passage valve formed by sandwiching a gate valve 5 between the side walls 2 and 3. The front and back walls 2 and 3 are edge-bonded (heat-welded) around the periphery. In the outlet portion, the intermediate gate valve 5 is sandwiched between the edges of the double-sided walls 2 and 3 and simultaneously bonded on both sides (see FIGS. 4 and 10), and the lower end edge on the outlet side. 7 is adhered to the surface wall 2 (see FIG. 7). Then, the water in the bag is discharged through the space between the back wall 3 and the intermediate gate valve 5 (see FIGS. 8 to 10).
Are in close contact with the surface wall 2.

A valve blade 9 made of a spring plate is adhered to the upstream side edge of the middle gate valve 5, and the back wall 3
An arcuately curved one is used. When the gate valve 5 comes into close contact with the back wall 3 at the valve blade 9 portion in the curved state in this direction (FIGS. 3 to 5), the gate valve 5 seals between the back wall 3 in this state. The valve will close. However, since the valve blade 9 can be inverted and elastically deformed in the opposite direction, the gate valve 5 comes into close contact with the surface wall 2 at the portion of the valve blade 9 due to the inversion, so that the flexible passage valve opens in this state. (The state of FIGS. 8 to 10). The procedure for opening and closing such a flexible passage valve will be described in order with reference to FIGS.

As described above, since the gate valve 5 is adhered to the front wall 2 at the lower end 7 on the downstream side, the flexible passage valve closes when the upper end of the valve blade 9 comes into close contact with the back wall 3 (FIG. 3 and 4), even if a large pressure of water is applied in this state (FIG. 5), water leakage is reliably prevented because the degree of adhesion is further increased. Therefore, as shown in FIG.
Can be hung to hold water.

In order to release the closed state of the flexible passage valve, as shown in FIG. 6, the valve blade 9 is pushed with a thumb or the like so as to grasp the flexible passage 1, and as shown in FIG. Warp blade 9. Then, the valve blade 9 comes into close contact with the surface wall 2, the passage is opened as shown in FIG. 8, and the contact state is stabilized by the pressure of drainage (FIG. 9). be able to.

The state shown in FIG. 9 is maintained even when water is filled. For example, when the faucet is opened by fitting the mouth of the flexible passage 1 into the faucet of the water supply, the pressure of the water causes the gate valve 5 to move to the surface wall 2.
It will be in an open state in close contact.

Next, in order to stop the water, as shown in FIG. 10, the user turns the valve blade 9 with the thumb so as to grip the flexible passage 1 (FIG. 11). Then, as shown in FIGS. 3 to 5, the flexible passage valve is closed, and at the same time, the water stop state is maintained by the pressure of the water. In this way, the water stoppage and the water discharge can be repeated.

FIG. 12 to FIG. 14 show another embodiment.
A gate valve 5 is sandwiched between the front and back walls 3, both ends of the gate valve 5 are adhered to both side walls 2 and 3, and a lower end edge 7 is attached to the front wall 2.
And a valve blade 9 is provided in the same manner as in the previous embodiment, and the flexible passage valve can be opened and closed by the same operation.

The difference is that the upper end of the gate valve 5 is formed in a triangular shape, the tip end 11 is adhered to the back wall 3, and the triangular portion above the valve blade 9 is formed in the back wall 3.
Therefore, the valve blade 9 is apt to be displaced toward the rear wall 3 because the connecting piece 10 is provided. That is, even when draining or filling, the valve blade 9 is in close contact with the back wall 3 (FIG. 13), so that the water stops naturally due to the water discharge pressure or the internal pressure (FIG. 14).

Each of the above-described flexible passage valves is implemented as a flexible passage valve for DC opening / closing that opens and closes one downstream side. FIGS.
4 and 15 show a flexible passage valve for split opening and closing in which both split flows 14 and 15 are selectively opened and closed, and FIG.
FIGS. 16 to 9 show changes in the cross section taken along line -B.

Further, in this embodiment, the valve blade 9 is particularly strongly adhered to the front and rear side walls 2 and 3 at the circumferential difference, but this circumferential difference is similarly applied to the above embodiment. it can. That is, FIG. 20 shows a case where the present invention is applied to a flexible passage valve for opening and closing a direct current of a type similar to the above embodiment. The change in the cross section along the line CC is the same as that shown in FIGS.

In the flexible passage valve shown in FIG. 15, the flexible passage 1 is divided by the intermediate partition valve 5 so that the branches 14 and 15 are formed bifurcated. By selectively adhering to either one of the front and back side walls 2 and 3, one of the two branches 14 and 15 is opened and the other is closed.
6 shows a case where the intermediate gate valve 5 is neutral. FIG. 17 shows a case where the front wall 2 side is closed, and FIG. 18 shows a case where the rear wall 3 side is closed.

On this closed side, face wall 2 (or 3)
A circumferential difference is provided so that the valve blade 9 is in close contact with the valve blade. Referring to FIG. 17, the circumferential difference between the two connecting points 17, 17 of the valve blade 9 is the same on both sides because the valve blade 9 is curved and closely attached to the surface wall 2. If it is assumed that the valve blade 9 is curved independently without contacting, the outer surface of the valve blade 9 is set to be slightly longer than the inner surface of the surface wall 2 (in FIG. However, when there is no internal pressure, the double-sided walls 2 and 3 are attached to the valve blade 9 due to such a circumferential difference.
Closely adhered to). This setting is basically for both connection points 1
Depending on the dimensional difference between the surface wall 2 and the valve blade 9 between 7 and 17, it may also depend on the thickness of the valve blade 9.

With respect to the change of opening and closing the diversions 14 and 15, the valve blade 9 is warped to any direction by the same operation as in the above embodiment, but the diversion 14 (or 1
When the passage expands due to the internal pressure of 5) (FIG. 17 or FIG. 18), the distance between the two connection points 17, 17 is reduced due to the expansion, so that the valve blade 9 is curved in an arc shape as described above and the face wall is bent. The close contact state of the valve blade 9 with respect to 2 (or 3) is maintained. Then, even if the internal pressure is lost, the close contact state is maintained, and as shown in FIG. 19, a phenomenon occurs in which the tension of the face wall 3 on the side that is not in close contact is lost.

In the embodiment shown in FIGS. 15 to 20, the front and back side walls 2 and 3, the gate valve 5 and the valve blade 9
Are integrally formed of a synthetic resin, and a hard synthetic resin is used for the valve blade 9. In the embodiment shown in FIG. 20, when the valve blade 9 is in close contact with the front wall 2, water is stopped, and when the valve blade 9 is in close contact with the rear wall 3, water flows (the movement of the valve blade 9 is the same as that shown in FIGS. 16 to 19). ).

[0030]

As described above, the flexible passage valve of the present invention has a very small number of parts and has a very simple structure which can be constituted by a vinyl sheet or a film. Starting with bags, various seasonings,
It can be equipped inexpensively in packaging containers for liquids such as chemicals and raw materials, so that the opening and closing operation of the valve is very easy and the flexible passage valve can be made flat, which is extremely convenient for handling. Has an effect.

In particular, when a circumferential difference is provided on the contact surface between the front and back side walls and the partition gate valve, water can be reliably stopped, and a connecting piece is provided on the valve blade. When a habit is formed (claim 3), the water can be stopped naturally by the internal pressure.

[Brief description of the drawings]

FIG. 1 is a schematic exploded perspective view illustrating a water storage bag equipped with a flexible passage valve of the present invention (adhesive portions are indicated by oblique lines).

FIG. 2 is a front view of a water storage bag embodying the present invention.

FIG. 3 is a longitudinal sectional view showing a water blocking state of the flexible passage valve for DC opening and closing according to the present invention.

FIG. 4 is a transverse sectional view taken along line AA of FIG. 3;

FIG. 5 is a longitudinal sectional view showing a state where the water stopping state is increased by an internal pressure.

FIG. 6 is a cross-sectional view showing a procedure for switching from water stoppage to drainage.

FIG. 7 is a cross-sectional view showing a state where the switching is performed.

FIG. 8 is a vertical cross-sectional view showing a state where the state is switched to drainage.

FIG. 9 is a longitudinal sectional view of the same part showing a state where the drainage state has advanced.

FIG. 10 is a cross-sectional view showing a procedure for switching from a drainage state to a water stop state.

FIG. 11 is a cross-sectional view of the same part, showing a state where the switching is performed.

FIG. 12 is an exploded plan view of a flexible passage showing another embodiment as a flexible passage valve for opening and closing a direct current.

FIG. 13 is a vertical sectional view of the flexible passage valve at the time of drainage or filling.

FIG. 14 is a vertical cross-sectional view showing a water blocking state of the flexible passage valve.

FIG. 15 is a vertical sectional view of a flexible passage valve showing another embodiment as a flexible passage valve for split flow opening / closing.

16 is a transverse sectional view taken along line BB of FIG.

FIG. 17 is a transverse sectional view showing the open / closed state of one of the two branches.

FIG. 18 is a cross-sectional view showing the open / closed state of the other of the two branches.

FIG. 19 is a transverse sectional view showing a state in which the internal pressure has disappeared from the open / closed state in FIG. 17;

FIG. 20 is a longitudinal sectional view corresponding to FIG. 15, showing another embodiment of a flexible passage valve for opening and closing a direct current.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Flexible passage 2 Front wall 3 Back wall 5 Middle gate valve 9 Valve blade 10 Connection piece 14, 15 Branch flow 17 Connection point

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[Procedure amendment]

[Submission date] January 22, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0015

[Correction method] Change

[Correction contents]

FIGS. 1 to 11 show one example of a flexible passage valve for opening and closing a direct current, of which FIG. 1 is an exploded perspective view schematically showing the assembly of a water storage bag P as an embodiment. Figure 2 represents the water storage bag P, 11 from FIG. 3, in FIG. 2
In the illustrated flexible passage 1 at the narrow outlet of the water storage bag P,
The opening / closing procedure of the flexible passage valve for water stop provided there is shown. The implementation target is not limited to the water storage bag, but varies.

Claims (6)

[Claims] Claims: 1. Between a front and back side wall constituting a flexible passage,
Similarly, a gate valve made of a flexible film is sandwiched, and both sides of the gate valve are connected to both front and back walls, and the gate valve is connected to both the front wall and the rear wall between both connections. A flexible passage valve characterized in that a valve blade which is selectively elastically deformed into an arc shape and closely adheres is formed. 2. The valve blade has a slightly longer dimension between the connection points on the contact surface than the front and rear walls, so that the valve blade is pressed against and adheres to the front and rear walls in an arc due to the narrowing between the connection points. 2. The flexible passage valve according to claim 1, wherein a circumferential difference is provided. 3. The downstream end of the gate valve is connected to the front wall so that water cannot pass therethrough, and water is stopped by the valve blade being in close contact with the back wall. Item 3. A flexible passage valve for opening and closing direct current according to item 1 or 2. 4. A bifurcated branch flow is formed downstream of the flexible passage by making the intermediate gate valve freely releasable from the front and back side walls, and the branch flow on the side where the valve blade is in close contact with either the front or back surface wall is formed. The flexible passage valve for dividing and opening / closing according to claim 1 or 2, wherein the valve is configured to stop water. 5. The connecting valve according to claim 3, wherein a connecting piece projecting in a mountain shape above the valve blade is formed at an upper end portion of the intermediate gate valve, and a tip of the connecting piece is adhered to a back wall. Flexible passage valve. 6. The flexible passage valve according to claim 3, wherein the valve blade has a tendency to bend toward the back wall side.