ES2938800A1 - Mechanism for automatic opening of a sealed container (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Mechanism or valve for opening a sealed container consisting of a partially cylindrical body (2) on which a rotating cam is placed on a through axis, the larger flange of the cam (3) receiving an external push, rotating it on its axis (6). The rotation makes the lower part of the cam push the ball (4) that it houses in its slot. The sphere, in turn, pushes the punch (5), which moves through the gap in its hole towards the membrane that seals the container (1), breaking it, thus releasing the gas that escapes through the gaps in the entire system. (Machine-translation by Google Translate, not legally binding)

Description

DESCRIPTION

Mechanism for automatic opening of a sealed container

Technical sector

Within the items that are commonly used in pipe installations, there are so-called shutters, which are vacuum-sealed plastic bags that contain a small bottle of compressed gas, normally carbon dioxide. Said bottle breaks when the bag is inside the tube, increasing the size of the bag and sealing the tube to prevent the entry of dirt, animals, etc.

The present invention refers to a valve for opening a container, normally a gas or compressed air cylinder, which is designed to perforate a membrane that seals the container. Said perforation releases the contents of the container, all this to fill the empty bag inside which it is located, called a self-inflating shutter.

Background of the invention

Currently, an obturator is an object used to obturate or plug ducts consisting of a hermetically closed bag of elastic and resistant material which houses a container, normally cylindrical, filled with air or compressed gas, commonly carbon dioxide. Said bag is introduced into the conduit to be sealed and, once introduced, said cylinder of compressed gas is opened which is released filling the bag which, when increasing in volume, seals the conduit. Among the many uses of this mechanism we can mention the protection of tubes that house electricity cables in order to prevent the introduction of water or other elements into them.

Until now, gas or compressed air cylinders for the use described have an opening mechanism consisting of the container having a pre-sanded funnel neck or simply less resistant due to its material or less thickness than the rest of the container, which is split to allow the release of the gas. Once opened, the container is finally inside the bag that contains it, since it must be hermetic to fulfill its purpose. However, the aforementioned break is not usually neat, releasing splinters that are scattered inside the bag. Likewise, the edge of the breakage itself can even cut the bag and, finally, the container remains inside the bag in two or more pieces, which increases the risk of breaking it and makes its recycling more complicated.

Explanation of the invention

A mechanism for opening a gas or compressed air container in a single piece is presented.

Elements of the mechanism:

Piece 1 (Drawing 1): support container, normally cylindrical in shape, provided with an outlet neck sealed by a metal membrane or another material of less resistance and thickness than the container itself.

Piece 2 (Drawing 2): main body of the mechanism, called discharge valve, opening consisting of a cylinder modified in such a way that it has a vertical hole to house a cam and a second through hole in the two upper arms. At the bottom of said hole there is a circular hole that will house a ball and, below said hole, there is a last hole that will house a cylindrical punch.

Piece 3 (Drawing 3): rotating cam that has a larger tab that is the thrust point to activate the mechanism and in the opposite part to it a slot that, at rest, will house a ball, followed by a second smaller tab that will press said ball when the rotary mechanism is activated from the larger tab. The entire cam rotates around a through hole through its center, which will house an axis.

Piece 4 (Drawing 4): sphere, housed between the lower minor groove of the cam and the groove arranged for this purpose in the main support piece. Said ball will be pressed by the smaller flange of the cam when it rotates and will be moved towards the punch.

Piece 5 (Drawing 5) Punch, housed in the hole of the main cylinder for this purpose, consisting of an upper cylinder in contact with the ball piece 4 and a lower punch that, when displaced, will perforate the cylinder membrane.

Part 6 (Drawing 6): Through shaft on which the cam rotates and which crosses its axis of rotation, leaning on two arms of the main cylinder.

The entire opening mechanism is attached to the neck of the gas container, for example by means of the screwing system.

Mode of operation: the larger tab of the cam (3) receives an external push, rotating it on its axis (6). The rotation causes the lower part of the cam that houses the ball (4) in the slot to be pushed downwards by the smaller flange of the cam itself. The sphere, in turn, pushes the punch (5), which moves through the gap in its hole towards the membrane that seals the container (1), breaking it, thus releasing the gas that escapes through the gaps in the entire system.

Brief description of the drawings

Drawing 1: container that houses the gas or compressed air and that is plugged by a perforable membrane. Corresponds to Part 1 of the explanation of the invention.

Drawing 2: main body of the mechanism, called the discharge valve, with its different holes to house the minor parts_ Corresponds to Part 2 of the explanation. This body is provided with a through axis to enable its rotation without displacement about its center (Drawing 6).

Drawing 3: Rotating cam provided with a larger flange for activation and a groove and smaller flange to house and press the thrust ball. Corresponds to Part 3 of the explanation. Drawing 4: ball, housed between the lower minor groove of the cam and which will receive the pressure of the minor flange of the cam when rotating. Corresponds to Part 4 of the explanation.

Drawing 5. Awl that when moving will perforate the cylinder membrane. Corresponds to part 5 of the explanation.

Drawing 6: Through shaft on which the cam rotates. Corresponds to part 6 of the explanation.

Drawing 7: Complete system with an example of assembly of all its parts.

Drawing 8: Complete system in its three positions, closed, moving and open.

Preferred embodiment of the invention

As expressed in the description of the mechanism, the factual embodiment of the invention occurs in a usual, but not limited, manner in the manufacture of gas or compressed air containers for their subsequent release for various purposes, normally for the inflation of sealing bags. , being this its main industrial application at the moment, although other possible future applications such as inflating tires or others are not ruled out. The most widely used material is metal, but it can be made of other resistant materials, such as PVC, artificial fibers or even wood.

Claims (3)

1. Valve for opening a sealed container consisting of a cylinder provided with a vertical hole to house a cam and a second through hole in the two upper arms, as well as a circular hole and a lower receptacle in its lower part. 2. Opening valve for a container sealed with a membrane as in Claim 1 comprising a rotary cam provided with a larger flange and on the opposite side to this a slit followed by a second smaller flange, the entire piece having a central hole to house a rotary shaft. 3. Valve for opening a container sealed with a membrane as in Claim 1 comprising a particular punch housed in the lower part of its main cylinder with sufficient clearance to move due to the thrust caused by the rotation of the cam.