JPH0541795Y2 - - Google Patents

Description

[Detailed description of the invention] (Purpose of the invention) This invention relates to a filling valve device for injecting and filling an injection container such as an aerosol sprayer with a propellant under pressure. The purpose is to provide a valve device which is easy to assemble and which can also be used as a simple exhaust means for residual gas after consumption of the propellant.

Conventionally, a filling valve device used for pressure filling an injection container generally includes an injection valve rod or a valve body that receives a valve spring in a valve casing, a seal for preventing leakage of the valve casing, or a seal for fixing the valve casing to the container. The number of parts, such as the screw fastening device, was complicated, and the assembly required a lot of effort, which had a large impact on the production cost of the injection container. Additionally, many propellants are combustible and have high thermal expansion, so if you do not use a tool to make a hole in the container when disposing of it after consumption, the container will be accidentally burned with trash and the container will be destroyed. There is no end to accidents involving explosions.

In view of the drawbacks of the conventional filling valve device as mentioned above, this invention thoroughly simplifies it, and at the same time allows consumers to use this filling valve device with little effort when disposing of the container. It was devised to allow residual gas to be easily exhausted without applying heat.

This invention will be explained below with reference to the illustrated embodiment. As shown in FIG. are doing.

The elastic valve body 1 is formed by integrally molding an upper valve cylinder 11 with a large outer diameter and a flange 13 and a lower valve cylinder 12 with a small outer diameter and a bottom. A side hole 16 is bored in the.

The plug body 2 is seated on the bottom wall 15 of the lower valve cylinder 12 and forms a cylinder peripheral surface 22 with a top edge 21 located slightly above the side hole 16.

According to the embodiment, when the valve assembly is not attached to the pressure vessel 3 (FIG. 3), the shaft hole 14 and the plug are held in place to the extent that the plug body 2 is held without falling out of the shaft hole 14 when the valve assembly is inverted. It is better to select the diameter of the body 2.

Further, according to the embodiment, the bottom wall 15 has a through hole 17.
The purpose of this hole 17 is to improve the filling speed, as will be described later.

In addition, in the embodiment, the upper and lower ends of the stopper 2 are chamfered into a conical shape, as shown in the container 3 shown in FIG.
In order to maintain the natural bending state of the cylinder wall of the upper valve cylinder 11 when the valve assembly is attached to the
This is to improve the flow of the injected material during injection, which will be described later. Regarding the recesses 23 and 24 provided on the top and bottom surfaces of the plug body 2, respectively, the recess 23 on the top surface is a receiving hole for the tip of the protrusion rod 4 inserted at the time of exhaustion, which will be described later. The recess 24 is designed to eliminate the need to judge whether the plug 2 is up or down when the plug 2 is inserted and assembled.

As mentioned above, this invention is based on the bottom wall 31 of the container 3.
The valve assembly is inserted into the insertion hole 32 bored in the bottom wall 31, and the collar 13 is placed on the outer surface of the bottom wall 31.As mentioned above, the outer diameter of the lower valve cylinder 12 corresponds to the insertion hole 32. Since the lower valve cylinder 12
It is extremely easy to insert. The upper valve cylinder 11 has a larger diameter than the insertion hole 32, but is thicker and more elastic, and the top edge 21 of the cylinder peripheral surface 22 of the plug body 2 is slightly above the side hole 16 of the lower valve cylinder 12. Therefore, if the lower valve cylinder 12 is pushed into the insertion hole 32 and then the upper valve cylinder 11 is pushed in, the cylinder wall of the upper valve cylinder 11 will bend inward as shown in FIG. At the same time, a strong sealing part is formed between the mouth edge of the insertion hole 32 and the plug body 2 by the cylinder wall of the upper valve cylinder 11,
At the same time, the side hole 16 is sealed by the cylindrical peripheral surface 22 of the plug body 2. Therefore, other sealing means such as leak-proof gaskets or cap screws are not required at all.

When filling, the injection nozzle 5 as shown by the imaginary line in FIG. 1 is pressed against the collar 13 and the injection material is discharged from the injection nozzle 5 under high pressure. The close contact between the lower valve cylinder 12 and the plug body 2 is loosened, a gap is created around the plug body 2, and the injection material is injected through the side hole 16. It should be noted that, in the illustrated embodiment, a wide opening 17 is bored in the bottom wall 15, so that the propellant can also be injected through the opening 17, so that the time required for filling is considerably shortened.

When the propellant is consumed and the container becomes empty, a suitable protruding rod 4, such as a nail or chopstick, is inserted into the shaft hole 14 to press the stopper 2, as shown in FIG. As mentioned above, the side hole 16 is sealed by the plug body 2, but when the pressure of the protrusion rod 4 is applied to the plug body 2, the lower valve cylinder 12 expands, so the side hole 16 expands and the plug is closed. Since it opens above the peripheral wall surface 22 of the body 2, the residual gas in the container 3 is released through the side hole 16 and becomes normal pressure, so even if the container is discarded, there is no danger of it bursting under high temperature.

(Effects of the invention) Thus, with this invention, assembly can be completed by simply inserting the valve assembly, in which the stopper is inserted into the shaft hole of the elastic valve element as described above, into the insertion hole drilled in the bottom wall of the container. The work process is extremely simple, and the number of parts is only two, the elastic valve body and the plug body, which are both molded products. Despite this simple structure, it not only ensures a seal between the inside and outside of the container and smooth filling, but also allows consumers to easily vent gas after consuming the propellant. The practical benefits for the production and use of injection containers are extremely significant, such as the ability to make injection containers and ensure the safety of waste.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view of the essential parts of two embodiments of the filling device according to this invention, with the palms joined together, Fig. 2 is a view showing the state in which residual gas is being exhausted in Fig. 1, and Fig. 3 is a valve assembly. FIG. 1 is an elastic valve body, 11 is an upper valve barrel, 12 is a lower valve barrel, 13 is a collar, 14 is a shaft hole, 15 is a bottom wall, 16
is a side hole, 17 is a through hole, 2 is a plug body, 21 is a top edge, 2
2 is a cylinder peripheral surface, 23 and 24 are recesses, 3 is a container, 31
32 is an insertion hole, 4 is a protruding rod, and 5 is an injection nozzle.

Claims (1)

[Scope of utility model registration request] An elastic valve element 1 is formed by integrally molding an upper valve cylinder 11 with a large outer diameter and a flange 13 and a lower valve cylinder 12 with a small outer diameter and a bottom, and the elastic valve element 1 is fitted into the shaft hole 14 of the elastic valve element 1. The lower valve cylinder 12 has a side hole 16 in the cylinder wall, and the top edge 21 of the plug body 2 is slightly above the side hole 16. A cylindrical peripheral surface 22 located at is formed,
The valve assembly is inserted into the insertion hole 32 of a small diameter corresponding to the outer diameter of the lower valve cylinder 12 bored in the bottom wall 31 of the container 3 that accommodates the injection material, and the collar 13 is inserted into the bottom wall 31.
A filling valve device for an injection container, which is installed on the outer surface of a container.