CN2342837Y

CN2342837Y - Gas nasal cover

Info

Publication number: CN2342837Y
Application number: CN 98227940
Authority: CN
Inventors: 陈天明
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-09-21
Filing date: 1998-09-21
Publication date: 1999-10-13
Anticipated expiration: 2008-09-21

Abstract

The utility model belongs to a gas nasal cover, composed of a filter screen, an expiratory valve and an ear rack. The expiratory valve is fixed on a hollow hole position arranged at the middle lower part of the front end of the filter screen, the ear rack is fixed on the middle position of both sides of the filter screen, and the filter screen which is matched with the nose shape of human body is adhered by a chemical fiber layer, an active carbon layer, and a cotton fiber layer; the filter screen can use a full nose covering type structure or a half nose covering type structure. The gas nasal cover can effectively filter various poisonous and harmful substance, and has small contact area with face, so that users can feel comfortable and cool.

Description

Gas nasal cover

The utility model belongs to the respiratory protection equipment technical field.

At present, the people that work in air pollution poisonous and harmful ring mirror (for example: the cement plant, the mine, the chemical plant, acidic surface is handled workshop and epidemic prevention department etc.), used respiratory protection equipment mostly adopts common cotton cloth respirator, and this cotton cloth respirator filter effect is bad, particularly, produce little effect to the filtration of toxic and harmful; And when using scorching summer, hidden most of face, made the people feel sultry discomfort, if adopt the gas mask of special force, though gas defence is effective, but the cost height, the scope of application is little, and heavy.Use summer and feel sultry discomfort equally.

The purpose of this utility model is exactly in order to overcome above-mentioned shortcoming, provides a kind of filtration gas defence effective, and features simple structure is used comfortable Gas nasal cover.

The technical solution of the utility model is done in such a way that this Gas nasal cover is by screen pack, outlet valve, and the ear frame is formed, and outlet valve is fixed on emptying aperture position, screen pack front end middle and lower part, and the ear frame is fixed on screen pack both sides medium position.

As further improvement of the utility model, screen pack can be divided into full screening nose formula and partly hide the nose formula, and the ear frame that partly hides the nose formula adopts soft elastic material to make.

As another kind of improvement the of the present utility model, screen pack is adhesive in the fixed cover, fixed cover is corresponding with screen pack, also match simultaneously with the human nasal type, the spaced passage that distributing on its fixed cover, the ear frame is fixed on fixed cover both sides medium position, and outlet valve is fixed on screen pack, emptying aperture position, fixed cover front end middle and lower part.

The utlity model has following advantage: this Gas nasal cover and human nose's shape are coincide, and features simple structure is light and handy, and when particularly used summer, because little with the face contact area, it was few to hide the position, sultry not as good as mouth mask, uses comfortable; Adopt chemical fiber layer, activated carbon layer, the cotton fiber layer is gluing or sew up the screen pack form toxic and harmful in the filtered air effectively, with common cotton cloth respirator relatively, good filtration effect, and the gas mask that uses with special force is relatively, then cheap, use widely, applicability is strong, and is light salubrious.

Fig. 1 hides nose formula structural representation entirely for the utility model.

Fig. 2 partly hides nose formula structural representation for the utility model.

Fig. 3 is that Fig. 1 Fig. 2 outlet valve A is to structural representation.

Now hide nose formula structure entirely in conjunction with Fig. 1 and further describe embodiment: this Gas nasal cover is by fixed cover 1, screen pack, outlet valve and ear frame combine, screen pack is by chemical fiber layer 3, activated carbon layer 6, cotton fiber layer 7 gluing or sew up after be adhesively fixed again and fix in the fixed cover 1, the fixed cover 1 spaced passage 2 that distributing, outlet valve is made up of exhale seat 4 and expiration sheet 5, expiration sheet 5 is made by soft rubber, and expiration sheet 5 places circle in expiration valve seat 4 front ends, and fixedlys connected with an end of circle core shaft, the centre bore of the other end insertion expiration valve seat 4 of circle core shaft is fixedly connected, whole outlet valve is fixed on screen pack, in the fixed cover 1 front end middle and lower part emptying aperture, on the screen pack front end, bottom and outlet valve contact position, then embed in the outlet valve cylindrical tongue, the ear frame is made up of support 8 and adjustable shelf 9, and support 8 has an elongated slot with adjustable shelf 9 junctions, and adjustable shelf 9 is fixedlyed connected with support 8 with screw by elongated slot, according to the actual range between everyone ear nose, elongated slot can be adjusted ear frame and internarial distance.

Fig. 2 is another embodiment that the utility model partly hides bridge of the nose formula, this Gas nasal cover is by screen pack, outlet valve 13, ear frame 15 is formed, screen pack is by chemical fiber layer 3, activated carbon layer 6, cotton fiber layer 7 is formed, structure is identical among outlet valve structure and Fig. 1, its outlet valve is fixed in the emptying aperture of screen pack front end middle and lower part, screen pack and outlet valve 3 contact positions then all embed in the outer round recessed of outlet valve, and 5 on ear frame adopts soft elastic material to make (as elastic band etc.), and its purpose is to implement this mode and is applicable to that the comrade who wears glasses uses.

When using this Gas nasal cover air-breathing, gap owing to distributing in the fixed cover in the fiber of passage and filtration stratum reticulare, after making the poisonous and harmful substance deposition that sucks in the gas or tackling in screen pack, thereby enter human body and reduced the infringement of adverse circumstances human body, when exhaling, because the expiration sheet of outlet valve is to be made by the soft rubber sheet, and emptying aperture greater than the expiration valve seat, therefore the gas of breathing out periphery from the soft rubber sheet under its pressure is breathed out, and then the soft rubber sheet is attached to again in the interior circle of expiration valve seat, blocks the emptying aperture in the valve seat, and can't be air-breathing, thereby reach gas defence, reduce injury of human, and use comfortable salubrious effect.

Claims

1. a Gas nasal cover is characterized in that by screen pack, outlet valve, and the ear frame is formed, and the suction valve of exhaling is fixed on emptying aperture position, screen pack front end middle and lower part, and the ear frame is fixed on screen pack both sides medium position.

2. Gas nasal cover according to claim 1 is characterized in that screen pack and human nasal type match, and its screen pack is by chemical fiber layer, activated carbon layer, and the cotton fiber layer is gluing or sew up and to form.

3. Gas nasal cover according to claim 1 is characterized in that screen pack can be divided into full screening nose formula and partly hide the nose formula.

4. Gas nasal cover according to claim 1 is characterized in that screen pack is adhesive in the fixed cover, and fixed cover is corresponding with screen pack, also matches the spaced passage that distributing on its fixed cover with the human nasal type simultaneously.