Protective respirator for fire scene rescue

Abstract

The utility model discloses a protective respirator for fire scene rescue, and relates to the technical field of respirators, the protective respirator comprises a mask main body, a fitting mechanism, a filtering mechanism and an anti-backflow mechanism, one end of the mask main body is provided with a flame-retardant transparent plate, one end of the mask main body is provided with the fitting mechanism, one end of the mask main body is provided with the filtering mechanism, and the other end of the mask main body is provided with the anti-backflow mechanism. And an anti-backflow mechanism is mounted at one end of the filtering mechanism. Through the arrangement of the mask main body and the backflow prevention mechanism, when a user wears the mask to inhale, the plugging cover is rotationally opened on the air inlet through the rotating groove, so that filtered air can enter the mask main body to be used; at the moment, due to the acting force of the micro-pressure spring, a plugging cover and a sealing pad on the air outlet are in contact sealing with the air outlet, so that external polluted gas cannot enter the mask body, in a similar way, when a user exhales, the air inlet is closed, the air outlet is opened, and the problem that harmful gas flows back when the device is used is effectively solved; and the use protection effect of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of respirators, in particular to a protective respirator for fire scene rescue. Background Art

[0002] The respirator is a self-contained open air breathing apparatus, which is widely used in fire fighting, chemical industry, shipbuilding, petroleum, smelting, warehouse, laboratory, mining and other departments. It is used by firefighters or emergency rescue personnel to safely and effectively carry out fire fighting, emergency rescue and rescue work in various environments such as thick smoke, poisonous gas, steam or lack of oxygen. However, this type of respirator has poor protection effect and poor fitting effect, so a protective respirator for fire rescue is needed.

[0003] The existing patent document with the technical disclosure number CN117045994A provides a protective respirator for fire rescue, including an air filter module, a cleaning module and a water replenishment module. The air filter module includes a breathing mask, two straps connected to the breathing mask, and two filter cartridges passing through the breathing mask. In the present invention, after the firefighters have been fighting in the fire for a certain period of time, the smoke and dust in the fire will block the activated carbon filter, making the activated carbon filter's oxygen processing function deteriorate. To solve this problem, the user separates the water outlet pipe and the pipe body, and then inserts the bottom end of the water outlet pipe into the sealing sleeve. Then, with the assistance of the connecting pipe, the cold water in the water bag fills the inner walls of the two filter cartridges, and then presses the water bag. The pressing force indirectly causes the water in the inner walls of the two filter cartridges to be sprayed out through multiple rubber nozzles, and the clean water rinses the inner walls of the filter cartridges and the activated carbon filter, thereby ensuring the single use time of this product and improving the safety of firefighters. However, the CN117045994A technology cannot improve the protection effect of the device during operation, and cannot improve the sealing of the device, and cannot improve the sustainable use of the device. Therefore, a protective respirator for fire rescue is urgently needed. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a protective respirator for fire rescue, so as to solve the problems that the existing respirators cannot improve the protective effect of the device, cannot improve the sealing of the device, and cannot improve the sustainable use of the device when in use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a protective respirator for fire rescue, comprising a mask body, a fitting mechanism, a filtering mechanism and an anti-backflow mechanism, wherein a flame-retardant transparent plate is installed at one end of the mask body, and a fitting mechanism is installed at one end of the mask body.

[0006] A filtering mechanism is installed at one end of the mask body.

[0007] A backflow prevention mechanism is installed at one end of the filtering mechanism.

[0008] Preferably, the fitting mechanism includes a tough frame, a slightly sticky tension silicone sleeve, buckle ears and a tension band, a tough frame is installed at one end of the mask body, a slightly sticky tension silicone sleeve is installed at one end of the tough frame, a buckle ear is installed at one end of the tough frame, and a tension band is installed at one end of the buckle ear.

[0009] Preferably, the tension band is snap-connected to the buckle ear, and the slightly sticky tension silicone sleeve is snap-connected to the tough frame.

[0010] Preferably, the filtering mechanism includes an air inlet, a gas filter canister, a canister plug and a sealing strip. The lower end of the mask body is provided with an air inlet, one end of the air inlet is equipped with a gas filter canister, the lower end of the gas filter canister is equipped with a canister plug, and the upper end of the gas filter canister is equipped with a sealing strip.

[0011] Preferably, the gas filter canister is threadedly connected to the air inlet, and the sealing strip is snap-fittedly connected to the gas filter canister.

[0012] Preferably, the anti-backflow mechanism includes a spring-penetrating shaft, a micro-pressure spring, a blocking cover, a rotating groove, a sealing pad and an air outlet. A spring-penetrating shaft is installed at one end of the air inlet, a micro-pressure spring is installed on the surface of the spring-penetrating shaft, a blocking cover is installed at one end of the micro-pressure spring, a rotating groove is provided at one end of the blocking cover, a sealing pad is installed at the lower end of the blocking cover, and an air outlet is provided at the upper end of the mask body.

[0013] Preferably, the plugging cover forms a rotating structure with the air inlet through a rotating groove, and the sealing gasket is movably connected to the air inlet.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model is provided with a mask body and an anti-backflow mechanism. When the user wears the mask and inhales, the plugging cover is rotated and opened on the air inlet through the rotating groove to allow the filtered gas to enter the mask body for use. At this time, due to the force of the micro-pressure spring, the plugging cover and the sealing pad on the air outlet are in contact and sealed with the air outlet, so that the external polluted gas cannot enter the mask body. Similarly, when the user exhales, the air inlet is closed and the air outlet is opened, which effectively prevents the problem of harmful gas backflow when the device is used, and improves the protection effect of the device;

[0016] 2. The utility model provides a mask body and a fitting mechanism, and can align the concave surface of the mask body installed in the device with the user's face, pull the tension belt on the buckle ear to fit the user's head, and then the slightly sticky tension silicone sleeve fits the user's forehead, cheek, chin and other positions, accurately exposing the user's facial features, effectively preventing harmful gases from entering from the fitting area, and improving the sealing performance of the device;

[0017] 3. The utility model provides a mask body and a filtering mechanism, and by pulling out the can plug, external gas can enter the mask body after being filtered by the canister. The canister can be used for a limited number of times, and the canister can be replaced with a knob when the device is not in use, thereby improving the sustainable use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front cross-sectional view of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the laminating mechanism of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the filter mechanism of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the backflow prevention mechanism of the utility model.

[0022] In the figure: 1. mask body; 2. flame-retardant transparent plate; 3. fitting mechanism; 301. tough frame; 302. slightly sticky tension silicone sleeve; 303. buckle ear; 304. tension belt; 4. filtering mechanism; 401. air inlet; 402. gas filter canister; 403. canister plug; 404. sealing strip; 5. anti-backflow mechanism; 501. spring shaft; 502. micro-pressure spring; 503. plugging cover; 504. rotating groove; 505. sealing pad; 506. air outlet. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0024] The following describes an embodiment of the utility model based on its overall structure.

[0025] See also Figure 1-4A protective respirator for fire rescue, comprising a mask body 1, a fitting mechanism 3, a filtering mechanism 4 and an anti-backflow mechanism 5, a flame-retardant transparent plate 2 is installed at one end of the mask body 1, a fitting mechanism 3 is installed at one end of the mask body 1, the fitting mechanism 3 comprises a toughness frame 301, a slightly sticky tension silicone sleeve 302, a buckle ear 303 and a tension belt 304, a toughness frame 301 is installed at one end of the mask body 1, a slightly sticky tension silicone sleeve 302 is installed at one end of the toughness frame 301, and a buckle ear 303 is installed at one end of the toughness frame 301, A tension band 304 is installed at one end of the buckle ear 303, and the tension band 304 is snap-connected with the buckle ear 303, and the slightly sticky tension silicone sleeve 302 is snap-connected with the tough frame 301. The concave surface of the mask body 1 installed in the device is aimed at the user's face, and the tension band 304 on the buckle ear 303 is pulled to fit the user's head. At this time, the slightly sticky tension silicone sleeve 302 fits the user's forehead, cheeks, chin and other positions, accurately exposing the user's facial features, effectively preventing harmful gases from entering from the fitting point, and improving the sealing of the device.

[0026] See also Figure 1-4 , a protective respirator for fire rescue, a filter mechanism 4 is installed at one end of the mask body 1, the filter mechanism 4 includes an air inlet 401, a gas filter canister 402, a canister plug 403 and a sealing strip 404, an air inlet 401 is opened at the lower end of the mask body 1, a gas filter canister 402 is installed at one end of the air inlet 401, a canister plug 403 is installed at the lower end of the gas filter canister 402, a sealing strip 404 is installed at the upper end of the gas filter canister 402, the gas filter canister 402 is threadedly connected to the air inlet 401, and the sealing strip 404 is snap-connected to the gas filter canister 402, the canister plug 403 can be pulled out to allow external gas to enter the mask body 1 after being filtered by the gas filter canister 402, and the gas filter canister 402 is used with a limited number of times, and the gas filter canister 402 is replaced with the knob when the device is not in use, thereby improving the sustainable use of the device.

[0027] See also Figure 1-4A protective respirator for fire rescue, a filter mechanism 4 is provided with an anti-backflow mechanism 5 at one end, the anti-backflow mechanism 5 comprises a spring shaft 501, a micro-pressure spring 502, a plugging cover 503, a rotating groove 504, a sealing pad 505 and an air outlet 506, a spring shaft 501 is provided at one end of the air inlet 401, a micro-pressure spring 502 is provided on the surface of the spring shaft 501, a plugging cover 503 is provided at one end of the micro-pressure spring 502, a rotating groove 504 is provided at one end of the plugging cover 503, a sealing pad 505 is provided at the lower end of the plugging cover 503, an air outlet 506 is provided at the upper end of the mask body 1, and the plugging cover 503 is connected to the air inlet 401 through the rotating groove 504 The mask has a rotating structure, and the sealing pad 505 is movably connected to the air inlet 401. When the user wears the mask and inhales, the blocking cover 503 is rotated and opened on the air inlet 401 through the rotating groove 504 to allow the filtered gas to enter the mask body 1 for use. At this time, due to the force of the micro-pressure spring 502, the blocking cover 503 and the sealing pad 505 on the air outlet 506 are in contact and sealed with the air outlet 506, so that external polluted gas cannot enter the mask body 1. Similarly, when the user exhales, the air inlet 401 is closed and the air outlet 506 is opened, which effectively prevents the problem of harmful gas backflow when the device is used, thereby improving the protection effect of the device.

[0028] Working principle: When in use, first align the concave surface of the mask body 1 with the user's face, pull the tension belt 304 on the buckle ear 303 to fit the user's head, then the slightly sticky tension silicone sleeve 302 fits the user's forehead, cheek, chin and other positions, accurately exposing the user's facial features, effectively preventing harmful gases from entering from the fitting area, improving the sealing of the device, and the flame-retardant transparent plate 2 maximizes the user's line of sight, and then unplug the can plug 403, so that the external gas enters the mask body 1 after being filtered by the gas filter canister 402, and the gas filter canister 402 is used for a limited number of times. When the device is not in use, the knob gas filter canister 402 is used to replace it, which improves the sustainable use of the device and is used. When the user wears the mask and inhales, the blocking cover 503 is rotated open on the air inlet 401 through the rotating groove 504 to allow the filtered gas to enter the mask body 1 for use. At this time, due to the force of the micro-pressure spring 502, the blocking cover 503 and the sealing pad 505 on the air outlet 506 are in contact and sealed with the air outlet 506, so that external polluted gas cannot enter the mask body 1. Similarly, when the user exhales, the air inlet 401 is closed and the air outlet 506 is opened, which effectively prevents the problem of harmful gas backflow when the device is used, and improves the protective effect of the device. In this way, the use process of the device is completed. The content not described in detail in this manual belongs to the existing technology known to professional and technical personnel in this field.

[0029] The directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the protection content of the present invention.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A protective respirator for fire rescue, comprising a mask body (1), a fitting mechanism (3), a filtering mechanism (4) and a backflow prevention mechanism (5), characterized in that: A flame-retardant transparent plate (2) is installed at one end of the mask body (1), and a fitting mechanism (3) is installed at one end of the mask body (1); A filtering mechanism (4) is installed at one end of the mask body (1); A backflow prevention mechanism (5) is installed at one end of the filtering mechanism (4).

2. A fire rescue protective breathing apparatus according to claim 1, characterized in that: The fitting mechanism (3) comprises a tough frame (301), a slightly sticky tension silicone sleeve (302), a buckle ear (303) and a tension band (304); one end of the mask body (1) is mounted with the tough frame (301); one end of the tough frame (301) is mounted with the slightly sticky tension silicone sleeve (302); one end of the tough frame (301) is mounted with a buckle ear (303); and one end of the buckle ear (303) is mounted with the tension band (304).

3. A fire rescue protective breathing apparatus according to claim 2, characterized in that: The tension band (304) is snap-connected with the buckle ear (303), and the slightly sticky tension silicone sleeve (302) is snap-connected with the toughness frame (301).

4. A fire rescue protective breathing apparatus according to claim 1, characterized in that: The filtering mechanism (4) comprises an air inlet (401), a gas filter canister (402), a canister plug (403) and a sealing strip (404); the lower end of the mask body (1) is provided with an air inlet (401); one end of the air inlet (401) is provided with a gas filter canister (402); the lower end of the gas filter canister (402) is provided with a canister plug (403); and the upper end of the gas filter canister (402) is provided with a sealing strip (404).

5. A fire rescue protective breathing apparatus according to claim 4, characterized in that: The gas filter canister (402) is threadedly connected to the air inlet (401), and the sealing strip (404) is snap-fittedly connected to the gas filter canister (402).

6. A fire rescue protective breathing apparatus according to claim 4, characterized in that: The anti-backflow mechanism (5) comprises a spring-penetrating shaft (501), a micro-pressure spring (502), a plugging cover (503), a rotation groove (504), a sealing pad (505) and an air outlet (506); the spring-penetrating shaft (501) is installed at one end of the air inlet (401); a micro-pressure spring (502) is installed on the surface of the spring-penetrating shaft (501); a plugging cover (503) is installed at one end of the micro-pressure spring (502); a rotation groove (504) is provided at one end of the plugging cover (503); a sealing pad (505) is installed at the lower end of the plugging cover (503); and an air outlet (506) is provided at the upper end of the mask body (1).

7. A fire rescue protective breathing apparatus according to claim 6, characterized in that: The plugging cover (503) forms a rotating structure with the air inlet (401) via the rotating groove (504), and the sealing pad (505) is movably connected to the air inlet (401).

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