JPH09155138A - Gas filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas filter in which filtration is surely free from clogging by using liquid instead of filter paper or a mesh. SOLUTION: A traplike liquid gathering part 2 is disposed on the way of a transfer pipe 1 of outside air A. The lower transfer pipe 1a is projected out into the inside through the bottom wall 3 of the liquid gathering part 2. A partition plate 5 is formed so as to cover the opening part of the transfer pipe 1a. A peripheral wall 6 is hung from the periphery of the partition plate 5. A meshy part 7 reaching a peripheral wall 9 is formed in the part lower than the opening part of the transfer pipe 1a parallel with the bottom wall of the liquid gathering part. A hanging wall is slightly extended from the side edge part of the meshy part 7. The lower end of the peripheral wall 6 in which the meshy part 7 is not formed is positioned in the part lower than the meshy part. A top wall 10 is formed from the upper end of the peripheral wall 9 of the liquid gathering part 2 to a transfer pipe 1b. A safety valve 11 is disposed in a part of the top wall 10 to regulate pressure when gas pressure of a negative pressure side reaches positive pressure. Outside air is filtrated by passing outside air A into liquid W of the liquid gathering part. Purified gas is transferred into gas of negative pressure.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a gas filter.

[0002]

2. Description of the Related Art Conventionally, the structure of a water supply tank or the like is one in which outside air is filtered by using a filter paper, mesh or the like in the water supply tank, and this is taken into the water supply tank.
Filter paper and mesh were often clogged, and it was difficult to achieve the desired filtration.

[0003]

SUMMARY OF THE INVENTION The present invention uses a liquid instead of a filter paper or a mesh, and an object of the present invention is to provide a device capable of surely filtering without clogging. .

[0004]

In order to achieve the above-mentioned object, a trap-like liquid reservoir is installed in the middle of a transfer pipe for transferring outside air into a negative pressure gas, and a liquid trap part below the transfer pipe is installed. Projecting the transfer pipe inward from the bottom wall of the liquid reservoir,
A partition plate is provided so as to cover the opening of the transfer pipe, a peripheral wall is hung from the periphery of the partition plate, and the peripheral wall of the liquid reservoir is lower than the opening of the transfer pipe from an appropriate range of the peripheral wall. Forming a mesh portion, further extending a vertical wall from the side edge portion of the mesh portion, the lower end of the peripheral wall not provided with the mesh portion is lower than the mesh portion, and further, the liquid pool portion The top wall is formed from the upper end of the peripheral wall up to the transfer pipe, and a safety valve that adjusts the pressure when the gas pressure on the negative pressure side becomes positive pressure is provided in a part of the top wall. The liquid is stored in advance at least up to the upper part of the mesh part, filtered by passing the outside air into the liquid, and the clean gas is transferred into the negative pressure gas. So that it can be replenished from the water supply pipe of the water supply tank Rutotomoni, it is preferable to the appropriate replacement and may constitute a liquid in the liquid reservoir, further, it is preferable that the gas in the water supply tank negative pressure of the gas.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail. A substantially trap-like liquid reservoir 2 is installed in the middle of a transfer pipe 1 for transferring outside air A into a negative pressure gas.
The transfer pipe 1a below the transfer pipe 1a is protruded inward from the bottom wall 3 of the liquid reservoir 2, and a partition plate 5 is provided so as to cover the opening 4 of the transfer pipe 1a. The bottom wall 3 of the liquid pool 2 from the proper range of the peripheral wall 6
A mesh part 7 which is substantially parallel to the lower part of the opening 4 of the transfer pipe 1a and reaches the peripheral wall 6 of the liquid reservoir 2 is formed, and a vertical wall 8 is slightly formed from the side edge part of the mesh part 7. The transfer pipe 1b is extended so that the lower end of the peripheral wall 6 not provided with the mesh part 7 is lower than the mesh part 7, and the top wall 10 is above the upper end of the peripheral wall 9 of the liquid reservoir 2.
And a safety valve 11 for adjusting the pressure when the gas pressure on the negative pressure side becomes a positive pressure is provided on a part of the top wall 10, and the liquid reservoir portion 2 having such a structure is at least higher than the mesh portion 7. The liquid W is stored in advance up to, and the outside air A is passed through the liquid W to be filtered, and a clean gas is transferred into the negative pressure gas.
Is preferably replenished from the water supply pipe C of the water supply tank B, and the liquid W in the liquid reservoir 2 can be appropriately replaced. Further, the negative pressure gas is replaced with the gas in the water supply tank B. In addition, the gas pressure in the water supply tank B is not always negative pressure but may be positive pressure. In this case, outside air cannot enter. In this case, it is necessary to discharge the gas in the water supply tank from the safety valve 11 that adjusts the gas pressure for adjustment.

It is necessary to sufficiently consider the size of the small holes 12 of the mesh portion 7 and the distance between the small holes 12 adjacent to each other. The reason is that if the small holes 12 are too large, there will be a difficulty in purifying the air, and if they are too small, it will be difficult for gas to pass therethrough, and there will be an inconvenience that filtration cannot be performed. If the distance is too short, bubbles passing through the small holes 12 may be combined with each other to form large bubbles.
If this happens, it will be difficult to clean the air.

Further, in this case, as shown in FIG. 1, the outside air A bends downward from below the transfer pipe 1a at the partition plate 5 and descends along the peripheral wall 6 of the partition plate 5 to form the liquid pool 2
Enters the liquid W, rises upward from the small holes 12 of the mesh portion 7, reaches the liquid surface, and is transferred to the transfer pipe 1b above the liquid surface.

Since the air in the liquid W naturally moves upward, it is not normally transferred from below the hanging wall 8 to the outside from the side edge portion of the mesh portion 7.

The length of the hanging wall 8 and the like should be considered in consideration of the safety factor to some extent, and the shorter the length, the better.

In addition, the portion where the mesh portion 7 is not formed is transferred in the water supply tank B when the liquid in the water supply tank B overflows, for example, when this equipment is used in the water supply tank B. This is useful for smoothly discharging the liquid, which is going out from the opening of the pipe D, to the outside. Therefore, in consideration of these points, the distance from the lower end of the peripheral wall 6 where the hanging wall 8 of the mesh portion 7 or the mesh portion 7 of the partition plate 5 is not formed to the bottom wall 3 of the liquid reservoir 2 is not too small. Is desirable.

In the above case, the lower end of the peripheral wall 6 and the liquid reservoir 2
It is also conceivable to form legs from the lower end of the peripheral wall 6 to the bottom wall 3 of the liquid reservoir 2 as a configuration in which a distance is provided between the bottom wall 3 and the bottom wall 3.

With such a structure, the partition plate 5 which is the most necessary for maintenance of the filter is provided with the peripheral wall 9 of the liquid reservoir 2.
Since it can be used without attaching it to the partition plate 5,
It is easy to form a single unit and replace it.

Incidentally, this device is provided with a transfer pipe D which is conventionally provided.
It may be provided in the middle of, but in this case,
As a structure for connecting with the conventional transfer pipe D, a screw type, a flange connection, an adhesive or the like can be considered, and the liquid reservoir 2
It is conceivable that the peripheral wall 6 is formed as a single body and is joined to the bottom wall 3 and the top wall 10 by a screw method, or that the peripheral wall 6 and the partition plate 5 are integrally molded. From the viewpoint of maintenance management, it is preferable to use a single unit. or,
When the partition plate 5 is formed by itself, it is preferable to form a hanging wall from the peripheral edge of the mesh portion 7 corresponding to the peripheral wall 6.

As a structure in which the liquid W in the liquid reservoir 2 can be replaced appropriately, the opening / closing of the drain 13 of the liquid reservoir 2 and the inflow of the liquid in the liquid reservoir 2 can be automatically and properly made by using a solenoid valve. It is desirable to replace an appropriate amount of liquid with time, and further, when the gas pressure on the negative pressure side becomes positive, the safety valve 11 that adjusts the pressure is a double valve so that fine particles in the air do not enter. It is preferable to have a structure that covers the above.

In the figure, Aa indicates the flow of the outside air A, and Ea indicates the flow of the gas on the negative pressure side.

[0016]

EFFECTS OF THE INVENTION Since the present invention has such a configuration, unlike the conventional configuration in which gas is filtered only with a mesh, there is less concern about clogging, and maintenance management becomes easier.
It is possible to always transfer clean gas, and particularly when used in a water supply tank, there is an effect that clean drinking water can be provided.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment showing the principle of the present invention.

FIG. 2 is an explanatory diagram showing an example of use of the present invention.

FIG. 3 is a front view showing an embodiment of the present invention.

FIG. 4 is a plan view of a partition plate which is a constituent member of the present invention.

FIG. 5 is a front view of FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Transfer pipe 1a ... Lower transfer pipe 1b ... Upper transfer pipe 2 ... Liquid pool part 3 ... Bottom wall 4 ... Opening part 5 ... Partition plate 6 ...・ Peripheral wall 7 ... Mesh part 8 ... Vertical wall 9 ... Peripheral wall 10 ... Top wall 11 ... Safety valve 12 ... Small hole 13 ... Drain A ... Outside air B ... Water supply tank C ... Water supply pipe D ... Transfer pipe W ... Liquid Aa ... Outside air flow Ea ... Negative pressure side gas flow

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[Procedure amendment]

[Submission date] December 18, 1995

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction contents]

Incidentally, this device is provided with a transfer pipe D which is conventionally provided.
It may be provided in the middle of, but in this case,
As a structure for connecting with the conventional transfer pipe D, a screw type, a flange connection, an adhesive or the like can be considered, and the liquid reservoir 2
It is conceivable that the peripheral wall 9 is formed as a single body and is joined to the bottom wall 3 and the top wall 10 by screwing, or the peripheral wall 9 and the partition plate 5 are integrally molded. From the viewpoint of maintenance management, it is preferable to use a single unit. or,
When the partition plate 5 is formed by itself, it is preferable to form a hanging wall from the peripheral edge of the mesh portion 7 corresponding to the peripheral wall 6.

Claims (4)

[Claims] 1. A trap-like liquid reservoir is installed in the middle of a transfer pipe for transferring outside air into a negative pressure gas, and a transfer pipe below the transfer pipe is located inside a bottom wall of the liquid reservoir. A partition plate is provided so as to project and cover the opening of the transfer pipe, a peripheral wall is hung from the periphery of the partition plate, and the liquid pool is located below the opening of the transfer pipe from an appropriate range of the peripheral wall. Forming a mesh portion that reaches the peripheral wall of the portion, further extending a vertical wall from the side edge of the mesh portion, the lower end of the peripheral wall without the mesh portion is lower than the mesh portion, and further, The top wall is formed up to the transfer pipe from the upper end of the peripheral wall of the liquid reservoir, and a safety valve for adjusting the pressure when the gas pressure on the negative pressure side becomes positive pressure is provided on a part of the top wall. Pre-store liquid in the liquid pool at least above the mesh Place, through the outside air into the inside liquid,
A gas filter characterized by filtering outside air and transferring a clean gas into a negative pressure gas. 2. The gas filtration according to claim 1, wherein the liquid in the liquid reservoir can be replenished from the water supply pipe of the water tank and the liquid in the liquid reservoir can be replaced appropriately. vessel. 3. The gas filter according to claim 1, wherein the negative pressure gas is the gas in the water supply tank. 4. The gas filter according to claim 1, wherein an opening area of the mesh is at least equal to or more than a cross-sectional area of the transfer pipe.