CN217311680U

CN217311680U - Self-suction filtering type replaceable half mask of particle-proof respirator

Info

Publication number: CN217311680U
Application number: CN202221233712.4U
Authority: CN
Inventors: 王羽
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-05-23
Filing date: 2022-05-23
Publication date: 2022-08-30
Anticipated expiration: 2032-05-23

Abstract

The utility model relates to a replaceable half-mask of a self-absorption filtering type particle-proof respirator, which comprises a half-mask body and a head wearing part, wherein the head wearing part is movably connected with the two sides of the half-mask body, and the length of the head wearing part above and below the half-mask body can be adjusted by moving up and down; an exhalation hole is formed in the position, close to the lower part of the middle of the half mask body, an exhalation valve is clamped at the exhalation hole, a detachable exhalation valve cover is connected to the half mask body outside the exhalation valve, and an air hole is formed in the exhalation valve cover; the half mask body is symmetrically provided with air inlet holes at two sides of the exhalation hole, the air inlet holes are clamped with air inlet valves, and the air inlet valves are externally connected with filter elements to filter air inhaled from the outside. The utility model discloses can effectively block tiny particulate matters such as dust, make the person of wearing obtain safe respiratory protection and keep away from dirt lung function disease, have detachable expiration partial structure, simple process, assembly are simple, the simple structure, wear comfortablely.

Description

Self-suction filtering type replaceable half mask of particle-proof respirator

Technical Field

The utility model belongs to the technical field of resource and environment, especially, relate to a from inhaling removable formula half-face guard of particulate matter respirator is prevented to filtration formula.

Background

KN100 is the highest grade in the protection grades of GB2626-2019 standard respiratory protection self-priming filter type particulate-proof respirator, KN represents solid particulate prevention, and 100 is the value of the filter efficiency, namely the dust protection efficiency to the current is more than or equal to 99.97%. The self-priming filtering type particle-proof respirator in the respiratory protection article comprises 3 varieties: respectively a self-priming filtering type disposable mask of the particle-proof respirator, a replaceable half mask of the self-priming filtering type particle-proof respirator and a full mask of the self-priming filtering type particle-proof respirator. The second replaceable half-mask of the self-priming filtering type particulate-proof respirator is an important component of a respiratory protection article for workers, and the replaceable half-mask of the self-priming filtering type particulate-proof respirator sold on the market at present is complex in structure and tedious to assemble, or is too heavy and has a negative drop feeling when being worn. Meanwhile, the existing half mask exhalation part is of an integral structure, the whole mask needs to be disassembled when the exhalation valve is required to be cleaned, and the operation is complex.

Therefore, there is a need for a replaceable half-mask for a self-priming, filtering, particulate-proof respirator that is simple in process, simple in construction, and comfortable to wear.

SUMMERY OF THE UTILITY MODEL

The utility model provides a from inhaling removable formula half face guard of filtration formula particulate matter respirator, can effectively block tiny particulate matter such as dust, make the person of wearing obtain safe respiratory protection and keep away from dirt lung occupational disease, have detachable expiration partial structure, simple process, assembly are simple, the simple structure, wear comfortable.

A replaceable half mask of a self-suction filtering type particle-proof respirator comprises a half mask body and head wearing parts, wherein the head wearing parts are movably connected to two sides of the half mask body, and the lengths of the head wearing parts above and below the half mask body can be adjusted by moving the head wearing parts up and down; an exhalation hole is formed in the position, close to the lower part of the middle of the half mask body, an exhalation valve is clamped at the exhalation hole, a detachable exhalation valve cover is connected to the half mask body outside the exhalation valve, and an air hole is formed in the exhalation valve cover; air inlet holes are symmetrically formed in the two sides of the exhalation hole in the half mask body, an air inlet valve is clamped in the air inlet hole, and the outside of the air inlet valve is connected with a filter element to filter air inhaled from the outside.

The expiration valve cover is in threaded connection with the half mask body.

The half-mask body comprises a wearing fixer, an M-shaped half-mask and a mask support body which are sequentially arranged from outside to inside, wherein the wearing fixer is a fixing shell and is clamped outside the M-shaped half-mask; the exhalation valve cover is detachably connected to the wearing fixer; the head wearing part is movably connected to the wearing fixer; the M-shaped half mask is a mask body; the mask support body is a support body matched with the inside of the M-shaped half mask.

The wearing fixer is made of PP plastic materials.

The M-shaped half mask is made of food-grade silica gel.

The mask support body is made of PP plastic.

The head wearing part comprises a head band, two sides of the head band are respectively connected with elastic bands through head band plug-ins, and the elastic bands are penetrated on the head band plug-ins; the other ends of the two elastic bands are respectively connected with a fastener and an inserter which can be buckled and connected with each other.

The wearing fixer is provided with a snap ring, and the elastic band penetrates through the snap ring to realize the connection of the head wearing part and the half mask body.

The utility model has the advantages that: the replaceable half mask of the self-priming filtering type particulate-preventing respirator provided by the utility model is provided with the detachable expiratory valve cover, the expiratory valve cover can be directly detached when the expiratory valve is cleaned, the threaded connection structure is easy to assemble and disassemble, the structure is simple, the operation is easy, and the installation and the wearing are simple; reasonable structure and advanced design. Simultaneously, what the half face guard part of M type that this utility model set up pressed close to face adopted is food level silica gel, and all the other parts have adopted PP plastics, wear comfortable and safety. The experimental data of this product shows that the resistance of breathing out, the resistance of breathing in of this half face guard are 1/3 of national standard, and it is more smooth and easy to breathe, wears more comfortablely.

Drawings

Fig. 1 is a front view of the present invention;

fig. 2 is a side view of the present invention;

FIG. 3 is a schematic view of the present invention;

wherein,

1-M type half mask, 2-expiratory valve, 3-inspiratory valve, 4-mask support body, 5-headband, 6-headband plug-in, 7-fastener, 8-plug-in, 9-elastic band, 10-wearing fixer, 11-expiratory valve cover.

Detailed Description

For better explanation of the present invention, the following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings for better understanding.

As shown in fig. 1-3, a replaceable half-mask for a self-priming filtering particulate-proof respirator comprises a half-mask body and a head-wearing part, wherein the half-mask body is used for covering the face to block the nose and the mouth and prevent particulate matters from entering the body through the nose and the mouth; the head wearing part is movably connected to two sides of the half mask body, and the length of the head wearing part above and below the half mask body can be adjusted by moving the head wearing part up and down, so that the requirements of different people on wearing are met. An exhalation hole is formed in the position, close to the lower portion of the middle of the half mask body, the exhalation valve 2 is clamped in the exhalation hole, a detachable exhalation valve cover 11 is connected to the half mask body outside the exhalation valve 2, and air holes are formed in the exhalation valve cover 11. Preferably, the exhalation valve cover 11 is in threaded connection with the half mask body. The half face mask body is symmetrically provided with inhalation holes at two sides of the exhalation hole, the inhalation holes are clamped with inhalation valves 3, and the outside of the inhalation valves 3 filters air inhaled from the outside by being connected with a filter element.

The half-mask body comprises a wearing fixer 10, an M-shaped half-mask 1 and a mask supporting body 4 which are sequentially arranged from outside to inside, wherein the wearing fixer 10 is a fixing shell made of PP plastic and is clamped outside the M-shaped half-mask 1; the exhalation valve cover 11 is detachably attached to the wearable holder 10. The head-worn component is movably connected to the wearable holder 10. M type half face guard 1 is the mask body of food level silica gel material, contacts with face. The face guard supports body 4 for the adaptation at the inside supporter of half face guard 1 of M type, adopts PP plastics material.

The head wearing part comprises a head band 5, two sides of the head band 5 are respectively connected with elastic bands 9 through head band plug-ins 6, the elastic bands 9 are threaded on the head band plug-ins 6, and the length can be adjusted through the head band plug-ins 6; the other ends of the two elastic bands 9 are respectively connected with a fastener 7 and an insert 8 which can be buckled and connected with each other, the complete connection of the whole head wearing part is realized after the fastener 7 and the insert 8 are buckled, and the head band 5 is fixed on the head, the fastener 7 and the insert 8 and fixed on the neck part behind the brain to realize the wearing of the half mask.

The wearing fixer 10 is provided with a snap ring, the elastic band 9 penetrates through the snap ring to realize the connection of the head wearing part and the half mask body, and meanwhile, the length of the elastic band 9 above and below the half mask body is adjusted through the relative position of the elastic band 9 and the snap ring.

When the exhalation valve 2 needs to be cleaned or replaced after a period of use, the exhalation valve cover 11 is simply detached from the wearable holder 10.

Claims

1. The utility model provides a removable formula half-face guard of particulate matter respirator is prevented to self-priming filtration formula which characterized in that: the length of the head wearing part above and below the half mask body can be adjusted by moving the head wearing part up and down; an exhalation hole is formed in the position, close to the lower part of the middle of the half mask body, an exhalation valve is clamped at the exhalation hole, a detachable exhalation valve cover is connected to the half mask body outside the exhalation valve, and an air hole is formed in the exhalation valve cover; the half mask body is symmetrically provided with air inlet holes at two sides of the exhalation hole, the air inlet holes are clamped with air inlet valves, and the air inlet valves are externally connected with filter elements to filter air inhaled from the outside.

2. The replaceable half-mask of a self-priming filtering particulate-free respirator of claim 1, wherein: the expiration valve cover is in threaded connection with the half mask body.

3. The replaceable half-mask of a self-priming filtering particulate-free respirator of claim 2, wherein: the half-mask body comprises a wearing fixer, an M-shaped half-mask and a mask support body which are sequentially arranged from outside to inside, wherein the wearing fixer is a fixing shell and is clamped outside the M-shaped half-mask; the exhalation valve cover is detachably connected to the wearing fixer; the head wearing part is movably connected to the wearing fixer; the M-shaped half mask is a mask body; the mask support body is a support body matched with the inside of the M-shaped half mask.

4. The replaceable half-mask of a self-priming filtering particulate-free respirator of claim 3, wherein: the wearing fixer is made of PP plastic.

5. The replaceable half-mask of a self-priming filtering particulate-free respirator of claim 3, wherein: the M-shaped half mask is made of food-grade silica gel.

6. The replaceable half-mask of a self-priming filtering particulate-free respirator of claim 3, wherein: the mask support body is made of PP plastic.

7. The replaceable half-mask of a self-priming filtering particulate-free respirator of claim 3, wherein: the head wearing part comprises a head band, two sides of the head band are respectively connected with elastic bands through head band plug-ins, and the elastic bands are penetrated on the head band plug-ins; the other ends of the two elastic bands are respectively connected with a fastener and an inserter which can be buckled and connected with each other.

8. The replaceable half-mask of a self-priming filtering particulate-free respirator of claim 7, wherein: the wearing fixer is provided with a snap ring, and the elastic band penetrates through the snap ring to realize the connection of the head wearing part and the half mask body.