JPS6025409Y2 - Gas pressure relief valve - Google Patents

Description

[Detailed explanation of the idea] This proposal relates to a gas internal pressure relief valve.

In bottles containing bleach, etc., the pressure inside the bottle can become quite high due to the generation of gas pressure, which can cause the bottle or stopper to burst.
The stopper may pop out.

The purpose of this proposal is to eliminate such danger by releasing the gas inside.

The illustrated embodiment will be described below.

Figures 1 and 2 are examples, where A is the mouth and neck of the bottle;
Reference numeral 1 denotes an inner stopper fitted into the mouth and neck, 2 a cap installed on the outside of the inner stopper and screwed onto the mouth and neck, and 3 a valve body installed on the inner stopper.

The inner stopper 1 is made of relatively soft synthetic resin, has a through hole 12 bored in the center of the top wall 11, the upper edge 12a of the through hole bulges upward, and the inner periphery of the top wall 119. A ring part 14 is integrally provided with an engaging protrusion 14a around the upper part of the outer periphery, and an appropriate number of ventilation passages 13 are opened inside and outside at the lower part of the ring part. are doing.

The cap 2- is made of relatively hard synthetic resin, and has the ring portion 14 fitted and locked at the upper part of its inner surface, and the inner surface of the top wall 21 is in contact with the upper surface of the ring portion 14, and the inner surface of the peripheral wall 22 is in contact with the upper surface of the ring portion 14. An engaging protrusion 22a is provided around the upper part of the inner surface, and the engaging protrusion 14a of the ring portion 14 is engaged with this.

The valve body 3 is made of rubber, soft synthetic resin, etc., is formed into a dish shape, and is placed on the stepped part 14b inside the ring part 14, and the outer surface of the peripheral wall 32 is connected to the upper inner periphery of the ring part 14. The central part of the bottom wall 31 is pressed against the upper edge 12a of the through hole of the inner plug 2 by its own elasticity, thereby closing the through hole 12, and the upper end surface is brought into contact with the lower surface of the cap top wall 21. .

With the above structure, when the gas pressure inside the bottle becomes higher than a predetermined value, the valve body 3 is pushed up and the gas inside the bottle flows out from the through hole 12 of the inner stopper 1, and the air passage 13. It flows out through...

Therefore, the internal pressure of the bottle does not rise above a predetermined value, and the bottle, stopper, etc. can be prevented from bursting, and the stopper, etc., can be prevented from popping out.

FIG. 3 shows another example, in which the ring portion 14 of the inner stopper 1 is made separate from the main body portion 1a in the previous example, and the main body portion 1a is made free.

In this case as well, the same effect as in the previous example occurs, but the main body 1
Since a is free, only this can be used like a spout.

According to this proposal, even if the internal pressure of the bottle is low due to the generation of gas,
The gas, etc. can be automatically released to the outside, so that the pressure inside the bottle does not increase, and there is no danger of the bottle or stopper bursting, or the stopper popping out.

In addition, in this case, the outflow path for letting the gas, etc. escape to the outside is entirely configured within the cap 2, and no through holes are exposed.
Therefore, there is no risk of an unexpected accident occurring due to the outflow path being blocked by dust, etc., and the appearance is extremely beautiful.

Furthermore, in the present invention, the valve body 3 is made of rubber or soft synthetic resin and has a dish shape, and the center part of the bottom wall 31 is pressed against the upper edge 12a of the through hole 12 to close it, so it has good adaptability. It is very convenient because it is sensitive to relatively low internal pressure.

[Brief explanation of the drawing]

The drawings are examples of the present invention, and Figure 1 is a vertical side view of an example, and Figure 2 is a longitudinal side view of an example.
The figure is a longitudinal side view of the same side in an operating state, and FIG. 3 is a longitudinal side view of another example. 1... Inner stopper, 2... Cap, 3...
... Valve body.

Claims (1)

[Scope of utility model registration request] Insert the inner stopper 1 with the ring part 14 standing up from the periphery of the top wall 11 into the cap 2, and then insert the ring part 14 into the cap 2.
The inner plug 1 is fitted and fixed to the inner upper part, and the inner plug 1 is further provided with a through hole 12'' in the center of the top wall 11, and the upper edge 12a of the through hole is bulged upward, and the ring portion An appropriate number of ventilation passages 13 and 14 are provided at the bottom of the cap 2 and open from the inside to the outside to lead into the inside of the cap 2.
..., and a rubber,
A dish-shaped valve body 3 made of a soft synthetic resin or the like is fitted and fitted, and the center portion of the bottom wall 31 of the valve body is inserted into the upper edge 12a of the through hole 12.
A gas internal pressure relief plug characterized in that it is in pressure contact with the gas pressure relief valve.