JPH0242290Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to an improvement of a filter storage container that is attached to a dust mask worn by workers at various work sites where a large amount of dust is generated. .

[Conventional technology]

Conventional dust masks are generally configured to purify inhaled air by passing coarse dust and fine dust through the same filter housed in a filter housing. When used in a place, the filter material becomes clogged with dust quickly, the intake resistance increases, the filter needs to be replaced frequently, and the amount of filter consumed increases, which is uneconomical.

[Problem that the invention attempts to solve]

This invention collects relatively coarse dust contained in the intake air in the filter housing before it reaches the filter, extending the service life of the filter and keeping the rise in intake resistance of the dust mask low. It is an object of the present invention to provide a filter housing for a dust mask that can be used as a dust mask.

[Means for solving the problem] The present invention provides an impactor that rapidly changes the flow direction of intake air inside the outside air intake port of the filter housing, and By providing a magnetic dust adsorption surface on one or both of the dust collision surfaces of the above impactor, relatively coarse dust contained in the outside air, especially magnetic dust such as iron dust and welding fume, can be inertly removed. Based on the principles of collision and magnetic attraction, dust is collected on the impactor surface or the inner surface of the filter housing before reaching the filter, thereby reducing the amount of dust that reaches the filter.

〔Example〕

An embodiment of the present invention will be described below based on the drawings. 1 is a dust mask, 2 is a pair of filter storage units attached to both sides of the dust mask 1, and these are attached to the outside of the main body 4 which has a ventilation hole 3 at the bottom. A thread groove 5 is provided on the side surface, a thread groove 7 provided on the inner surface of the cap 6 that covers the opening of the main body 4 is screwed into the thread groove 5, and an intake port 8 is provided in the center of the cap 6. Inside the center of the cap 6, there is provided an impactor 10 shaped to sharply change the flow of air taken in through the intake port 8, and a filter 11 is provided inside the main body 4 at a position closer to the bottom. are stored in a replaceable manner.

The dust collision surface 12 of the impactor 10 is provided with a magnetic dust adsorption surface. As a specific means, the impactor 10 itself may be formed of a magnetic material such as a magnet, or the dust collision surface 12 may be made of a magnetic material such as a magnet.
Apply magnetic paint to the dust collision surface 1
Means such as attaching a magnetic piece, a magnetic rubber piece, or a plastic piece to 2 may be employed.

In addition, on the dust collision surface 12 of the impactor 10,
A magnetic paint 13 is not provided on the inner surface of the filter housing 2 on the outside air inlet side, for example, on the inner surface of the cap 6 as shown in FIG.
Alternatively, a dust adsorption surface may be provided by applying a magnetic component 13 such as a magnetic piece, a magnetic rubber piece, or a magnetic piece of plastic. A dust adsorption surface as described above may be provided on both sides.

[Effect of invention]

When the filter housing configured as described above is attached to a dust mask and the wearer of the dust mask inhales outside air containing dust, the inhaled air flows into the device through the intake port 8 and then flows into the device through the impactor 10. Although the direction is suddenly changed, the relatively coarse and magnetic dust contained in the intake air is separated from the intake air by the principle of inertial collision and the principle of magnetic adsorption. 10 and/or the cap 6, the fine dust remaining in the intake air flows with the intake air and is removed by the filter 11.

In addition to the above-described embodiments, the present invention may be configured such that non-magnetic dust can be removed at the same time by adding an adhesive sticker or paint to the dust adsorption surface of the impactor and/or the cap. Further, an uneven surface may be formed on the dust adsorption surface to make it easier for dust to adhere. Further, the shape of the filter housing and the intake port may be formed into shapes other than those in the above embodiments. Also, the impactor may be fixed to the cap, or it may be removably attached.

[Effect of idea]

Since the present invention is configured as described above, it is possible to remove relatively coarse dust contained in the inhaled air, especially iron dust.
By the principles of inertial collision and magnetic adsorption, magnetic dust such as welding fume is collected on the impact surface of the impactor and the inner surface of the filter housing on the outside air intake side before it reaches the filter.
The service life of the filter can be extended, and even when used in a place with high dust concentration, the filter does not need to be replaced frequently, the consumption of the filter is reduced, it is economical, the increase in intake resistance is low, and it is easy to use. It has the advantage of being able to breathe. In addition, if the filter housing is configured with a main body and a cap as in the above embodiment, or if the impactor is removable, dust adhering to the impact surface of the impactor or the inner surface of the cap can be removed by cleaning or wiping. , can be used repeatedly.
In this case, applying magnetic paint or pasting magnetic parts to form a dust-attracting surface has the advantage that the dust-adsorbed paint or parts can be removed and replaced with new paint or parts. be.

[Brief explanation of the drawing]

Figure 1 is a front view showing an example of a dust mask, Figure 2 is a front view showing an example of a dust mask.
The figure is a sectional view showing one embodiment of the filter housing attached to the same dust mask, Figure 3 is a diagram showing the dust suction surface of the impactor in the same embodiment, and Figure 4 is another embodiment of the filter housing mentioned above. FIG. 5 is a cross-sectional view showing the dust adsorption surface of the inner surface on the outside air intake port side in the same embodiment. 1... Dust mask, 2... Filter storage container, 8
... Intake port, 10 ... Impactor, 12 ... Dust collision surface, 13 ... Paint having magnetism, 13 ... Magnetic component.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a filter housing to be attached to a dust mask, an impactor is provided inside the outside air inlet to rapidly change the flow direction of the intake air, and an impactor is provided on the outside air inlet side of the filter housing. A dust mask filter storage device comprising a magnetic dust adsorption surface on one or both of the inner surface and the dust collision surface of the impactor. (2) The dust mask filter storage device according to claim 1, wherein the impactor is formed of a magnetic material such as a magnet. (3) The dust mask filter storage device according to claim 1, wherein a magnetic paint is applied to the dust collision surface of the impactor. (4) Utility model registration claim No. 1 in which a magnetic piece, magnetic rubber piece, or plastic piece is attached to the impactor dust collision surface.
Filter storage container for dust masks as described in section. (5) The filter storage device for a dust mask according to claims 1, 2, 3, and 4 of the utility model registration claim, wherein the inner surface of the filter storage device on the outside air inlet side is coated with a magnetic paint. (6) The dustproofing device according to claims 1, 2, 3, and 4 of the utility model registration claim, in which a magnetic piece, a magnetic rubber piece, or a plastic piece is attached to the inner surface of the filter housing on the outside air inlet side. Filter storage container for masks.