JP2000335649A - Gas vent valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas valve which is suitable to use for storing various kinds of goods including a fermented food for a long period of time and capable of preventing increase of pressure in a storing body with gas released from the inside of the storing body while shutting off air from coming in from the outisde. SOLUTION: This gas valve is attached to an opening 2 formed at a storing body 1 such as a container or a bag. In this case, a gas transmitting material 3 which transmits gas while shutting off air is provided so as to cover the opening 2, and a valve mechanism which opens at a specified set pressure with an internal pressure at the storing body 1 received and releases the gas inside the storing body 1 to the outside is provided at the outside of the gas transmitting material 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vent valve mounted on a container such as a container or a bag.

[0002]

When a fermented food or a liquid that is easily vaporized is stored in a container such as a container made of a hard material or a bag made of a soft sheet material molded into a predetermined shape, the fermentation of the food or the liquid The gas generated by the vaporization increases the pressure inside the housing,
There is a danger that the container may burst. Storing such a substance requires a means for releasing gas outside the body in order to keep the inside of the container at a predetermined pressure.

According to the present invention, by attaching to a container such as a container or a bag, it is possible to release gas in the container to prevent a rise in pressure inside the body, and to block moisture or air from entering from outside. An object of the present invention is to provide a vent valve suitable for long-term storage of various substances including fermented foods.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a vent valve mounted on an opening formed in a container such as a container or a bag, which shuts off a liquid and allows gas to permeate. A gas permeable material is provided so as to cover the opening, and a valve mechanism is provided outside the gas permeable material to receive the internal pressure of the storage body, open the storage body at a predetermined pressure, and discharge gas in the storage body outside the body. It is configured.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a first embodiment of the present invention, in which an opening 2 is opened in a housing 1 such as a container made of a hard material or a bag made of a soft sheet material, and a vent valve is attached to the opening 2. . A sheet-shaped gas permeable material 3 is fixed by, for example, bonding or welding the periphery to the outer surface of the outer surface of the storage body 1 so as to cover the opening 2.
A functional membrane material (for example, a continuous porous PTFE material) having a property of shutting off liquid and transmitting gas is used, which has an appropriate strength with respect to liquid pressure, and the opening 2 is covered with a gas permeable material 3. It has been done.

[0006] A cover 10 containing a valve member therein is joined to the outer surface of the housing 1 so as to cover the opening 2 by bonding or welding the bottom thereof, and a plurality of small holes or holes are formed on the peripheral surface of the cover 10. A discharge hole 12 for the slit is provided. A seat-shaped valve body 15 is housed in the cover 10, and a ring-shaped valve seat 16 is adhered or welded to the outer surface of the housing body 1 at a position concentric with the opening 2, and is fixed. The seat 16
It is formed of a material that does not transmit liquid and gas. In the upper layer of the valve body 15 in the cover 10, a sheet-shaped elastic body 18 that is in contact with the back surface of the valve body 15 is housed. By stacking and housing these members in the cover 10, the elastic body 18
Are configured to bias the valve body 15 in the valve closing direction. Therefore, the urging force of the elastic body 18 always applies the valve body 1
The degassing valve is closed with the valve 5 in contact with the valve seat 16, and the discharge hole 12 is closed (the state in FIG. 1).

In the gas vent valve thus configured,
When the substance contained in the container 1 generates gas and the internal pressure rises, the gas permeable material 3 permeates the gas and the valve body 15 receives the internal pressure. When the internal pressure reaches a predetermined set pressure, the valve body 15 moves against the elastic body 18 and separates from the valve seat 16 (the state shown in FIG. 3), the vent valve is opened, and the discharge hole 12 is opened. Releases gas out of the body. When the internal pressure decreases due to the release of gas, the valve body 15 returns to the original position by the urging of the elastic body 18 and the gas vent valve is closed. Due to the opening and closing action of the gas vent valve, the inside of the housing 1 is always kept at a set pressure or less.

FIGS. 4 to 11 show various modifications of the valve member. FIG. 4 shows the elastic body 18 having a ring shape.
FIG. 5 shows the valve seat 16 having an elliptical cross section.
Is a ring-shaped elastic body 18 and a valve seat 16 having an elliptical cross section.
Is a combination of 7 to 9 show the valve element 15.
FIG. 7 shows a valve seat 16 having an elliptical cross section and a pressure receiving surface center of the valve body 15 having a convex shape.
FIG. 8 shows a valve seat 16 having a circular cross section and the center of a pressure receiving surface of a valve body 15 having a truncated conical convex shape. FIG.
Is formed in a spherical convex shape. 10 and 11 show the elastic body 18 having a ring shape with an elliptical cross section. As shown in these embodiments, the valve body 15, the valve seat 16, and the elastic body 18 can be formed in various shapes while maintaining their functions.

FIGS. 12 and 13 show a case where a coil spring 18a is used as the elastic body 18. FIG. In this embodiment, the coil spring 18a is housed on the back surface of the valve body 15 having the entire pressure receiving surface having a spherical convex shape, and biases the valve body 15 in the valve closing direction. As shown in FIG. 13, a discharge hole 12 can be formed on the upper surface of the cover 10.

In the embodiment shown in FIG. 14, the valve body 15 itself is formed of an elastic body.
When the internal pressure in the housing 1 reaches a predetermined set pressure in a state in which the valve body 15 is in contact with the valve body and the valve is closed, the received valve body 15 contracts and deforms and separates from the valve seat 16 to open (the state of FIG. 15). , The gas is discharged from the discharge hole 12.

FIGS. 16 and 17 show a structure in which the gas permeable material 3 is provided such that the peripheral edge is adhered or welded to the outer surface of the housing 1 so as to cover the surface of the opening 2. FIG.
Fig. 17 shows a state in which the gas permeable material 3 is housed in the cover 10, and Fig. 17 shows a state in which the cover 10 is joined with the gas permeable material 3 interposed therebetween. Even with this configuration, the gas permeable material 3
The function of the vent valve can function similarly.

In the embodiment shown in FIGS. 18 to 20, the gas release valve is attached to the container 1 such as a container or a bag by screwing the cover via a packing without using any bonding or welding means. It was done. In FIG. 18, packing 5 is provided so as to sandwich the periphery of the opening 2 formed in the storage body 1, and the outer cover 10 is attached to the cylindrical inner cover 10a.
By screwing b, the packing 5 is crimped from above and below, and the gas release valve is attached. As in the previous example, the valve member of the valve body 15, the valve seat 16, and the elastic body 18 are housed in the outer cover 10b, and a discharge hole 12, which is a passage for discharging gas, is formed in the side wall of the outer cover 10b. The gas permeable material 3 is provided fixed to the upper surface opening of the inner cover 10a.
The function of the gas vent valve functions in the same manner as in the previous example, so that the pressure in the housing 1 can be maintained at a predetermined pressure or less. With this configuration, the gas release valve can be firmly attached by screwing. If the airtightness can be ensured, the packing 5 may be provided on one of the front and back sides of the periphery of the opening 2 and crimped.

FIG. 19 and FIG. 20 show a gas vent valve similarly attached by screw tightening, in which the gas permeable material 3 is fixed to the lower opening of the inner cover 10a and the valve body 15 itself is made of an elastic body. Reference numeral 19 denotes a valve housing in which the valve body 15 and the valve seat 16 are housed in the enlarged diameter portion at the upper end of the inner cover 10a.
FIG. 20 shows the valve seat 1 at the enlarged diameter portion at the upper end inside the inner cover 10a.
6 is housed, and the valve body 15 is housed in the outer cover 10b. In this embodiment, when the internal pressure in the housing 1 reaches a predetermined set pressure, the received valve body 15 contracts and deforms to open and close the valve seat 16, and discharges gas from the discharge hole 12. As shown in these embodiments, the vent valve of the present invention can be configured so that the opening 2 is indirectly covered with the gas permeable material 3 via the inner cover 10a.

[0014]

As described above, the vent valve of the present invention is
The internal pressure in the housing 1 is received by the action of the gas permeable material 3, and when the inside of the housing 1 reaches a predetermined set pressure, it is opened and gas can be discharged outside the body. ,
The inside of the housing 1 can always be maintained at a set pressure or less, and abnormal pressure rise in the housing 1 and rupture of the container can be prevented.

Further, since the gas permeable material 3 blocks the liquid, it is possible to prevent the liquid from leaking even when the container 1 is overturned. This gas vent valve blocks the entry of air from the outside. , While preventing quality deterioration due to oxidation,
Combustible substances can also be safely stored, and are suitable for long-term storage of various substances including fermented foods.

[Brief description of the drawings]

FIG. 1 is a sectional view of a first embodiment.

FIG. 2 is a plan view of the first embodiment.

FIG. 3 is a sectional view showing a state where a valve body is opened.

FIG. 4 is a cross-sectional view of another embodiment.

FIG. 5 is a sectional view of still another embodiment.

FIG. 6 is a sectional view of still another embodiment.

FIG. 7 is a sectional view of still another embodiment.

FIG. 8 is a sectional view of still another embodiment.

FIG. 9 is a sectional view of still another embodiment.

FIG. 10 is a sectional view of still another embodiment.

FIG. 11 is a sectional view of still another embodiment.

FIG. 12 is a sectional view of still another embodiment.

FIG. 13 is a sectional view of still another embodiment.

FIG. 14 is a sectional view of still another embodiment.

FIG. 15 is a sectional view showing a state where the valve body is opened.

FIG. 16 is a sectional view of still another embodiment.

FIG. 17 is a sectional view of still another embodiment.

FIG. 18 is a sectional view of still another embodiment.

FIG. 19 is a sectional view of still another embodiment.

FIG. 20 is a sectional view of still another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Storage body 2 Opening 3 Gas permeable material

Claims (1)

[Claims] 1. A gas vent valve attached to an opening (2) opened in a storage body (1) such as a container or a bag, wherein a gas permeable material (3) which shuts off liquid and allows gas to pass therethrough is opened. It is provided so as to cover the hole (2), and is opened outside of the gas permeable material (3) at a predetermined pressure by receiving the internal pressure of the housing (1), and the gas in the housing (1) is externally opened. A vent valve that is provided with a valve mechanism that discharges air to the valve.