CN212548005U

CN212548005U - Filtering type gas mask

Info

Publication number: CN212548005U
Application number: CN202020566076.1U
Authority: CN
Inventors: 马焕明
Original assignee: Jiangsu Anhua Police Equipment Manufacturing Co ltd
Current assignee: Jiangsu Anhua Police Equipment Manufacturing Co ltd
Priority date: 2020-04-16
Filing date: 2020-04-16
Publication date: 2021-02-19
Anticipated expiration: 2030-04-16

Abstract

The utility model discloses a filtration formula breathing mask, including the mask body with set up the exhaling mouth on the mask body, the induction port, the mask body is half enclosed structure, two anti-hem sealing washers of mask body edge connection, mask body the place ahead sets up the goggles, the induction port sets up the both sides at the mask body, exhale the mouth and set up the bottom at the mask body, can dismantle on the induction port and connect filter equipment, install the inspiratory valve in the induction port, exhale mouthful outside-in installs discharge valve in proper order, the oronasal mask, the gas pocket is seted up to oronasal mask both sides, the bottom is seted up the through-hole and is communicated with each other with discharge valve, the mask body is on upper portion, a middle part, the. The gas mask has the advantages of good filtering effect, smooth breathing and high comfort level.

Description

Filtering type gas mask

Technical Field

The utility model belongs to the technical field of protective equipment technique and specifically relates to a filtration formula breathing mask.

Background

The gas mask is a personal special labor protection article, is also an individual protective article, is worn on the head to protect the respiratory organs, eyes and face of a person and prevent toxic substances such as poison gas, dust, bacteria, toxic and harmful gas or steam and the like from damaging the personal protective apparatus. The gas mask is widely applied to the fields of petroleum, chemical industry, mines, metallurgy, military, fire fighting, health epidemic prevention, mechanical manufacturing and the like, and can play an important role in protecting the personal respiratory system in cities with severe haze and photochemical smog.

However, the existing gas masks still have some disadvantages when in use, firstly, most of the gas masks are only provided with a single filter device, and when the proportion of toxic gas in the air is large, the air filtered by the single filter device cannot meet the breathing requirement of a human body, which causes great harm to the human body, and meanwhile, the traditional filter device is only provided with a coarse filter layer, and the purification rate of the air is not high.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: overcome the defect of the prior art above, provide a filter type gas mask that filter effect is good, breathe smoothly, the comfort level is high.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a filtration formula breathing mask, includes the mask body and sets up exhaling mouth, induction port on the mask body, the mask body be half enclosed structure, two anti-hem sealing washers of mask body edge connection, mask body the place ahead sets up the goggles, the induction port sets up the both sides at the mask body, exhaling mouthful setting is in the bottom of mask body, can dismantle on the induction port and connect filter equipment, the induction port on set up the sleeve, the sleeve is located the outside part of mask body and filter equipment threaded connection, installs the inspiratory valve in the sleeve, exhaling mouthful outside-in install discharge valve, oronasal mask in proper order, oronasal mask both sides set up the gas pocket, the bottom set up the through-hole and communicate with each other with discharge valve, the mask body sets up the bandeau in upper portion, middle part, lower part both.

Preferably, the goggles comprise lenses and a goggle frame, wherein the goggle frame is of a single-reverse-folded-edge close-fit frame structure.

According to a preferable technical scheme, the air suction valve comprises a grid fixed in the sleeve, a connecting column fixed at the center of the grid and a check sheet sleeved on the connecting column, and the check sheet covers the inner end face of the sleeve.

Furthermore, the diameter of the non-return sheet is larger than the inner diameter of the sleeve.

As a preferable technical scheme, the exhaust valve comprises a grid gasket fixed in the exhalation port and a rubber pad connected to the central column of the grid gasket.

Furthermore, the diameter of the rubber pad is smaller than the inner diameter of the grid gasket and larger than the diameter of the through hole at the bottom of the oronasal mask.

Preferably, the headband is provided with a length-adjustable structure and is made of elastic materials.

As a preferred technical scheme, the filtering device comprises a melt-blown cloth layer, an activated carbon layer, a chemical agent layer and a melt-blown cloth layer from top to bottom in sequence.

As the preferred technical scheme, the exhalation port is obliquely arranged at the bottom of the mask body, so that a blocking eave is formed between the upper edge of the bottom of the mask body and the exhalation port, and when toxic liquid or gas attacks the face, the blocking eave has a blocking effect on the exhalation port, and the toxic liquid or gas is prevented from permeating into the mask through the exhalation port.

The utility model discloses a filtration formula breathing mask, its beneficial effect is: the breathing mask is characterized in that breathing valves are arranged on two sides of the mask and used for controlling gas to enter, an expiration valve is arranged in the mask portion below the oronasal mask, expired gas can be discharged from the expiration valve but cannot enter the mask, and therefore, the one-way flow of the gas is realized through the control of the inspiration valve and the expiration valve; the design of the double-side filtering device is adopted, the four-layer filtering device has the advantages of good filtering effect, low air leakage coefficient, good antifogging performance, light dead weight, comfortable wearing, suitability for different head types, safety and strong universality, and is suitable for the traditional helmet type mask.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a front view of the structure of the present invention;

FIG. 2 is a rear view of the structure of the present invention;

fig. 3 is a top view of the structure of the present invention;

FIG. 4 is a perspective view of the present invention;

fig. 5 is another view angle structure diagram of the present invention;

in the figure, 1 is a filter device, 2 is a sleeve, 3 is an oronasal mask, 4 is a head band, 5 is a rubber cushion, 6 is protective glasses, 7 is an air suction port, 8 is a connecting column, 9 is a check sheet, 10 is a grid, 11 is an exhalation port, 12 is a blocking eave.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

The filtering type gas mask as shown in the figures 1-5 comprises a mask body, an exhalation port 11 and an inhalation port 7, wherein the exhalation port 11 and the inhalation port 7 are arranged on the mask body, the mask body is of a semi-enclosed structure, the edge of the mask body is connected with a double-reverse-folded-edge sealing ring, a protective mirror 6 is arranged in front of the mask body, the protective mirror 6 is composed of a lens and a mirror frame, the mirror frame adopts a single-reverse-folded-edge sealing frame structure, the inhalation port 7 is arranged at two sides of the mask body, the exhalation port 11 is obliquely arranged at the bottom of the mask body, so that a blocking brim 12 is formed between the upper edge of the bottom of the mask body and the exhalation port, a filtering device 1 is detachably connected on the inhalation port 7, the filtering device 1 sequentially comprises a melt-blown cloth layer, an activated carbon layer, a chemical agent layer and a melt-blown cloth layer from top to, the exhalation port 11 is sequentially provided with an exhaust valve and an oronasal mask 3 from outside to inside, the two sides of the oronasal mask 3 are provided with air holes, the bottom of the oronasal mask 3 is provided with a through hole and is communicated with the exhaust valve, the mask body is provided with head bands 4 at the upper part, the middle part and the lower part, the head bands 4 are arranged in a length-adjustable structure and are made of elastic materials.

The air suction valve comprises a grid 10 fixed in the sleeve 2, a connecting column 8 fixed at the center of the grid 10 and a check sheet 9 sleeved on the connecting column 8, the check sheet 9 covers the inner end face of the sleeve 2, and the diameter of the check sheet 9 is larger than the inner diameter of the sleeve 2.

The exhaust valve comprises a grid gasket fixed in the exhalation port 11 and a rubber pad 5 connected to the central column of the grid gasket, and the diameter of the rubber pad 5 is smaller than the inner diameter of the grid gasket and larger than the diameter of a through hole at the bottom of the oronasal mask 3.

The utility model discloses a filtration formula breathing mask, the face guard both sides are equipped with the inspiratory valve, control gas gets into, cover portion is equipped with the expiratory valve below the mouth-nose cover, expired gas can be discharged from the expiratory valve, but can't get into in the face guard, realize gaseous one-way flow through the control of inspiratory valve and expiratory valve like this, when using a whole set of breathing mask, external gas loops through filter equipment, the inspiratory valve gets into in the face guard, and then through the gas pocket inlet port on the mouth-nose cover, the confession people breathe, the gas that people expired discharges the face guard through discharge valve, breathe smoothly; the design of the double-side filtering device is adopted, the four-layer filtering device has the advantages of good filtering effect, low air leakage coefficient, good antifogging performance, light dead weight, comfortable wearing, suitability for different head types, safety and strong universality, and is suitable for the traditional helmet type mask.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A filtering respirator that is characterized by: including the mask body and exhaling mouth (11), induction port (7) of setting on the mask body, the mask body be half enclosed structure, two anti-hem sealing washers of mask body edge connection, mask body the place ahead sets up goggles (6), induction port (7) set up the both sides at the mask body, exhale mouth (11) set up the bottom at the mask body, can dismantle on induction port (7) and connect filter equipment (1), induction port (7) on set up sleeve (2), sleeve (2) lie in mask body outside part and filter equipment (1) threaded connection, install the inspiratory valve in sleeve (2), exhale mouth (11) from outside-in install discharge valve, oronasal mask (3) both sides in proper order, the bottom set up the gas pocket, the through-hole communicates with each other with discharge valve, the mask body is on upper portion, middle part, the mask body is on the bottom of installing discharge valve, oronasal mask (3) in, The two sides of the lower part are provided with head bands (4).

2. The filtering respirator of claim 1, wherein: the protective glasses (6) are composed of lenses and a glasses frame, and the glasses frame adopts a single-reverse-folded-edge sealing frame structure.

3. The filtering respirator of claim 1, wherein: the air suction valve comprises a grid (10) fixed in the sleeve (2), a connecting column (8) fixed at the center of the grid (10) and a non-return sheet (9) sleeved on the connecting column (8), wherein the non-return sheet (9) covers the inner end face of the sleeve (2).

4. The filtering respirator of claim 3, wherein: the diameter of the non-return sheet (9) is larger than the inner diameter of the sleeve (2).

5. The filtering respirator of claim 1, wherein: the exhaust valve comprises a grid gasket fixed in the exhalation port (11) and a rubber pad (5) connected to the central column of the grid gasket.

6. The filtering respirator of claim 5, wherein: the diameter of the rubber cushion (5) is smaller than the inner diameter of the grid gasket and larger than the diameter of the through hole at the bottom of the oronasal mask (3).

7. The filtering respirator of claim 1, wherein: the headband (4) is of a length-adjustable structure and is made of elastic materials.

8. The filtering respirator of claim 1, wherein: the filtering device (1) is sequentially provided with a melt-blown cloth layer, an activated carbon layer, a chemical agent layer and a melt-blown cloth layer from top to bottom.

9. The filtering respirator of claim 1, wherein: the exhalation port (11) is obliquely arranged at the bottom of the mask body, so that a blocking eave (12) is formed between the upper edge of the bottom of the mask body and the exhalation port.