CN201260849Y - Double-medium filtering dust-proof mask - Google Patents

Abstract

The utility model relates to a double-medium dustproof mask which comprises a mask main body (1), an expiratory valve (8), an inspiratory valve (2), a dust filter box seat (9) and a head support (3); the dust filter box seat (9) is installed at the outer side of the upper part of the mask main body (1) corresponding to the inspiratory valve (2), and forms a whole body combining with a first-level filter box (10) and a second-level filter box (11) through inserters. Filter sponge (12) is arranged at both sides and the middle of the first-level filter box (10), and the second-level filter box (11) is filled with clear water. The utility model uses the clear water as a filter medium to replace filter paper, filter cloth and filter cotton, has low respiration resistance and high dust prevention efficiency, not only can efficiently prevent dust, but also can prevent the chemical peculiar smell, thereby the use cost is greatly lowered. An expiratory sheet and an inspiratory sheet are fine processed by adopting silicon rubber, so as to resist ageing, not to deform, be convenient to clean and keep favorable air impermeability. The interior of each of holes at both sides of a convex part of the main body is respectively connected with the head support, a semicircular button and a pane button to form a whole body through an elastic band to be capable of being freely regulated. Furthermore, the head is equally stressed, so the wearing is more comfortable and convenient.

Description

Two media filtration anti-dust respirators

Technical field

The utility model relates to extraordinary labour protection articles for use, specifically a kind ofly is widely used in two media filtration anti-dust respirators that cement, mining industry, asbestos, scientific research etc. have the dust work place.

Background technology

From since China's WTO; external personal protective equipment constantly enters Chinese market; promoted the technical development of domestic protective articles; enhancing day by day along with people's sense of self-protection; demand to personal protective equipment is also more and more higher, the development that the kind of protective articles and function are also being maked rapid progress.But present anti-dust respirator still is to adopt filter paper, filter cloth, filter pulp to filter the Vintage Product of dust entirely on the market, this mouth mask is long because the dust meeting of obstruction strengthens respiratory resistance with service time one, breathe muscular fatigue thereby produce, occur uncomfortable in chest, feel suffocated, phenomenon such as expiratory dyspnea, and the production cost of filter paper, filter cloth, filter pulp is higher, the sponge circle that contacts with face sticks with glue agent and mask main body is bonding, often have in the peculiar smell inlet port nasal cavity wearing, gas with foreign flavor also can cause certain stimulation to face.

Summary of the invention

The purpose of this utility model is at the deficiencies in the prior art, provides a kind of rational in infrastructure, novel in design, comfortable wearing, and it is convenient to change, clean, and dust proof rate height, respiratory resistance are low, use economic two media filtration anti-dust respirators.

The utility model is achieved through the following technical solutions: it is to be made of mask main body, outlet valve, inlet valve, filter dirt box, head rest; The inner chamber periphery of mask main body is inlayed high density sponge foam circle or silicone rubber gasket, the top inner chamber of mask main body is equipped with inlet valve, outlet valve is equipped with in the bottom, the both sides square hole of mask main body is connected as a single entity with elastic cord and head rest respectively, buckle in half garden that is with respectively, the two ends of elastic cord and square frame is buckled, its main points are the top and the corresponding outside of the inlet valve installation filter dirt cassette holder of mask main body, and filter dirt cassette holder is combined into one by plug-in unit and one-level filter box secondary filter box.The both sides of one-level filter box and middle the placement are filtered sponge, and the secondary filter is box-packed goes into clear water.Air enters from the left and right sides of filtering the dirt cassette holder, enters secondary filter box after once filtering by the both sides sponge of one-level filter box, passes through through inlet valve inlet port nasal cavity from the centre of I and II filter box and filter dirt cassette holder behind water secondary filter.

The utility model substitutes filter paper, filter cloth, filter pulp as filter medium with clear water, and respiratory resistance is low, dust proof rate is high, not only can be effectively dustproof, and can anti-chemical peculiar smell, greatly reduces use cost.Exhale, inspiration piece adopts silicon rubber fine finishining to form, and is ageing-resistant, indeformable, be not clamminess, it is convenient to clean, and has kept good air-tightness.In the main body protuberance two side holes respectively with elastic cord and head rest, semicircle buckle, square frame links and is one, but free adjustment, and head stress equalization, wearing more comfortable is convenient.Long-term use can prevent the generation of occupational diseases such as anthraco-silicosis effectively.

Description of drawings

Fig. 1 is the utility model general structure schematic diagram.

Fig. 2 is the utility model general structure decomposing schematic representation.

Fig. 3 is the front view of Fig. 1 mask main body (1).

Fig. 4 is Fig. 3 left view.

Fig. 5 filters the stereogram of dirt box for Fig. 1.

Fig. 6 is A-A cutaway view of Fig. 5.

Fig. 7 is B-B cutaway view of Fig. 6.

The specific embodiment

Structure such as Fig. 1-shown in Figure 7, the two media filtration anti-dust respirators that constitute by mask main body 1, outlet valve 8, inlet valve 2, filter dirt cassette holder 9, head rest 3.As shown in Figure 2, inlet valve 2 is installed in the inner chamber on mask main body 1 top, outlet valve 8 is installed in the bottom of mask main body 1, filter dirt cassette holder 9 is installed in mask main body 1 top and inlet valve corresponding section, filter dirt cassette holder 9 and one-level filter box 10, one-level filter box 10 is filtered between the box 11 by being connected also sealing of plug-in unit fastening, the both sides placement filtration sponge 12 in the one-level filter box 10, the clear water of packing in the secondary filter box 11 with secondary.One end of elastic cord 4 inserts in mask main body 1 any side opening mouth, and half garden of putting on endways detains 5, the other end is worn square frame button 6, and head rest 3 will be welded with plastic welder with being connected of elastic cord 4, fills sponge foam circle or silicone rubber gasket 7 at mask main body 1 inner chamber periphery at last.

The main body 1 of this product, filter dirt cassette holder 9 and one-level filter box 10, secondary filter box 11 all adopts high-quality engineering plastics, sturdy and durable.Outlet valve 8, inlet valve 2 are formed by silicon rubber fine finishining, and be ageing-resistant, be not clamminess.During use, the head rest on the mask 3 is enclosed within on the head, airtight by sponge foam circle or silicone rubber gasket 7 between face and the main body, the elasticity of regulating semicircle button 5 and square frame button 6 is to correct position.When air-breathing, air enters from the left and right sides air admission hole 13 of filter dirt cassette holder 9, both sides by one-level filter box 10, after once filtering, sponge 12 enters secondary filter box 11, secondary filter box 11 with clear water as filter medium, air passes through from the centre of one-level filter box 10, secondary filter box 11 and filter dirt cassette holder 9 behind the clear water secondary filter, through inlet valve 2 inlet port nasal cavities.This moment, inlet valve 2 opened, and outlet valve 8 is in closed condition, and during expiration, outlet valve 8 opens earlier, and inlet valve 2 is in closed condition, successively circulation.

This product structure is tight rationally, modern design, comfortable wearing, economical and practical, durable in use, clean and make things convenient for.Its technical performance reaches national LD29-92 standard-required fully.1, dust proof rate 〉=99%; 2, expiratory resistance≤49Pa; 3, inspiratory resistance≤29.4Pa; 4, inspiratory resistance rising value≤117.6Pa; 5, outlet valve air-tightness 〉=10S; 6, frenulum bonding strength 〉=50N.Therefore, the dust proof rate height, respiratory resistance is low, has reached the advanced level of domestic like product, so it is the most desirable of protection and prevention anthraco-silicosis, the most effective Internal Protective Device.

Claims (1)

1, a kind of pair of media filtration anti-dust respirator is made of mask main body (1), outlet valve (8), inlet valve (2), filter dirt cassette holder (9), head rest (3); The inner chamber periphery of mask main body (1) is inlayed high density sponge foam circle or silicone rubber gasket (7), the top inner chamber of mask main body (1) is equipped with inlet valve (2), outlet valve (8) is equipped with in the bottom, the both sides square hole of mask main body (1) uses elastic cord (4) and head rest (3) to be connected as a single entity respectively, (5) are buckled in half garden that is with respectively, the two ends of elastic cord (4) and square frame is buckled (6), it is characterized in that: filter dirt cassette holder (9) is installed in the corresponding outside of the top of mask main body (1) and inlet valve (2), filter dirt cassette holder (9) is combined into one by plug-in unit and one-level filter box (10) secondary filter box (11), the both sides of one-level filter box (10) and middle the placement are filtered sponge (12), secondary filter box (11) clear water of packing into.

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