JPH0416076Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention mainly relates to a container valve used in a supply container for highly clean gas containing almost zero particles.

(Conventional technology) In recent years, precision has progressed in many technical fields, and in the field of industrial gas applications, in addition to ultra-high purity gases, highly purified gases containing almost zero particles are being developed. Demand is increasing.

When consuming gas in a commonly used container, rust particles generated on the inner wall of the container,
Fine metal powder, fibers, etc. generated when the container valve is tightened accompany the gas used and cause particle contamination within the consumption process.

If highly clean gas is required for this purpose, the inner surface of the container may be physically or chemically treated, or
Alternatively, it is common to install a suitable filter in the middle of the piping after the container valve outlet for purification.

In particular, the treatment of the inner surface of the container is expensive and requires complicated labor and time.

(Technical Issues) The present invention was developed in view of the shortcomings of the prior art, and aims to propose a container valve that can easily and easily take out highly clean gas without having to treat the inner surface of the container. This is a major issue.

(Technical means) In order to solve the above-mentioned technical problem, this invention has a one-way flow through the filling check valve due to the stop action of the consumption check valve when filling with gas, allowing gas to pass only through the filling line. In addition to preventing gas from flowing into the consumption line, when the gas is consumed, when the valve is opened, the filling check valve stops due to the self-pressure of the gas inside the container, so that the gas inside the container does not pass through the filling line and is turned back to the consumption line. The gas enters through the stop valve, then passes through a filter and is purified, passing through a consumption line and being taken out from the container valve outlet.

Specifically, as shown in the illustrated embodiment, the configuration is as follows.

Reference numeral 1 denotes a valve body of a container valve 2, and the inside thereof is threaded to form a threaded portion 3.

The internal structure of the container valve 2 is as shown in FIG. 3, but since it is not an important point of the present invention, a detailed explanation thereof will be omitted, but the valve element 5 is opened and closed by turning the handle 4 in the left and right directions. It is something.

Reference numeral 6 denotes a fitting that is screwed onto the valve body 1 and has a through hole 7. A pipe body 8 as a gas filling line A is attached to communicate with the through hole 7, and a pipe as a gas consumption line B is attached. body 9 to the tube body 8
They are branched out from each other and installed in parallel (for example, see FIG. 4 as an example).

Both tube bodies 8 and 9 are made of stainless steel to prevent rust from forming.

10 is a filling check valve attached to the discharge end A1 of the gas filling line A, which has the function of allowing gas to flow only in the direction of arrow P and not allowing gas to flow in the opposite direction. , the gas is allowed to pass through only when the gas is being filled.

10A is a valve element, and 10B is a spring.

11 is a consumption check valve attached to the intake end B1 of the gas consumption line B, which has the function of allowing gas to flow only in the direction of arrow Q and not allowing gas to flow in the opposite direction; The gas is allowed to pass only when the gas is consumed.

11A is a valve element, and 11B is a spring.

Reference numeral 12 denotes a filter provided in the gas consumption line B, and is provided between the consumption check valve 11 and the mounting fitting 6. The filter 12 described above is made of sintered metal, stainless steel mesh, or the like.

The filter 12 can be easily replaced with a variety of filters depending on the desired cleanliness of the gas.

Reference numeral 13 indicates an attachment/replacement stopper.

14 is a container and indicates a cylinder.

15 is the neck of the cylinder.

(Function) The filling check valve 10 is attached to the discharge end A1 of the pipe body 8 attached to the attachment fitting 6 using the attachment and replacement stopper fitting 13.

Next, the filter 12 is attached to the pipe body 9, and finally the consumption check valve is attached to the intake end B1, and after that, the mounting fitting 6 is screwed into the threaded part 3 of the valve body 1. After assembling the container valve body 16 in this way, the gas filling line A is inserted into the container 14.
Then, the gas consumption line B is inserted, and the valve body 1 is screwed 17 into the neck 15 of the container 14.

Next, the valve element 5 is opened by operating the handle 4 as appropriate, and a predetermined gas is filled through the opening 18.

At that time, gas is filled into the container 14 through the through hole 7 of the fitting 6, the pipe body 8, and the filling check valve 10, that is, the gas filling line A.

At this time, the consumption check valve 11 is closed and does not allow gas to pass through.

Next, when using the gas filled in the container 14, the handle 4 is operated to open the valve element 5.

At that time, the gas pressure in the container 14 closes the filling check valve 10 and opens the consumption check valve 11, so that the gas flows through the consumption check valve 11, filter 12,
The gas is supplied to the outside through the pipe 9, that is, the gas consumption line B, through the mouth 18. The gas is purified by passing through a filter 12.

(Effects) Since the present invention has the structure and operation as described above, it has the following effects.

(a) By partially inserting the product of the present invention into a container, there is no need to treat the inner surface of the container.

(b) Since a filter is used in the gas consumption line, the gas taken out is purified even if the gas contains some particles, and there is no need to install a separate filter in the external consumption gas line. Also, since a replaceable filter is installed, the filter can be easily replaced depending on the desired gas cleanliness.

(c) Since the gas filling line and the gas consumption line are provided separately, and only the flow of gas at the time of gas consumption passes through the filter, the consumed gas can be purified reliably.

[Brief explanation of the drawing]

FIG. 1 is an overall front view of the present invention, FIG. 2 is an overall front view of the same in use, and FIG. 3 is an enlarged longitudinal sectional front view of the container valve. FIG. 4 is an enlarged longitudinal sectional front view of the main parts showing the attachment relationship between the tubes 8 and 9. 1...Valve body, 2...Container valve, 6...Mounting fittings, A...Gas filling line, B...Gas consumption line, 10...Filling check valve, 11...Consumption check Valve, 12...filter.

Claims (1)

[Claims for Utility Model Registration] A gas filling line A formed by attaching a filling check valve 10 to the tip of the first pipe body 8, and a consumption check valve 11 to the tip of the second pipe body 9. A gas consumption line B formed by attaching a filter 12 directly or replaceably to the upper part thereof is inserted into the container 14 in parallel, and the gas filling line A and the gas consumption line are The base end of B is made to communicate with the container valve 2, and when gas is filled, gas passes only through the filling check valve 10, and when gas is consumed, the gas passes through the consumption check valve 1.
A container valve used for highly clean gas, etc., which is characterized by allowing gas to pass through only one port.