CN215841292U

CN215841292U - Convenient and reliable fire-fighting self-rescuer

Info

Publication number: CN215841292U
Application number: CN202121765399.4U
Authority: CN
Inventors: 邸永春; 李琴; 倪臣; 胡加斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2022-02-18
Anticipated expiration: 2031-07-30

Abstract

The utility model discloses a convenient and reliable fire-fighting self-rescuer, belonging to the technical field of fire-fighting articles; the gas cylinder assembly is connected with the mask assembly through an air bag, and a spring is supported in the air bag; the mask assembly is connected with a fire blocking sheet; according to the utility model, the fire blocking sheet is connected on the face mask, so that the cheek can be effectively isolated from external hot air; the utility model effectively improves the service time of the self-rescuer on the basis of reducing the size and the weight of the self-rescuer, and has reliable switching and convenient wearing.

Description

Convenient and reliable fire-fighting self-rescuer

Technical Field

The utility model belongs to the technical field of fire-fighting articles, and particularly relates to a convenient and reliable fire-fighting self-rescuer.

Background

The fire fighting respirator is also called air respirator and fire fighting air respirator. At present, the self-rescuer has some problems. If the application number is 201921657233.3, the patent named as a forest fire protection self-rescuer has the problems of large volume and weight, short effective time during escape, unreliable switching between a filtering system and an air breathing system and inconvenient mask wearing.

Also, for example, patent No. 200620050376.X entitled "isolated compressed oxygen self-rescuer" has the problems of hidden danger of inhaling toxic gas, too large volume, incapability of being applied to the fire-fighting industry, and limited adaptation site. Mainly because:

the opening time is too long, the opening time is about one minute, and the number of breaths of the escaped person in one minute reaches more than 20.

Secondly, the nose is clamped by the nose clamp during breathing, and the mouth can only be used for breathing, which is contrary to the normal breathing habit of people, and external toxic gas is necessarily inhaled in case of the nose clamp falling off. And the mouth device does not protect the face, and if the mouth device is applied to fire escape, the face can be burnt by external hot gas.

And a cleaning tank for filtering carbon dioxide is arranged in the self-rescuer, so that the volume is increased.

The gas in the gas cylinder is pure oxygen, and the pure oxygen is a class B dangerous article in fire hazard classification, is an excellent combustion supporter, and brings great danger to personnel escaping from a fire scene in case of leakage.

The above problems all greatly reduce the practicability of the existing self-rescuer.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes the defects of the prior art, provides a convenient and reliable fire-fighting self-rescuer, and aims to effectively prolong the service time of the self-rescuer on the basis of reducing the volume and weight of the self-rescuer, and ensure reliable switching and convenient wearing.

In order to achieve the above object, the present invention is achieved by the following technical solutions.

The utility model provides a convenient reliable fire control self-rescuer, includes gas cylinder assembly and face guard assembly, the gas cylinder assembly is connected with the face guard assembly through the gasbag, face guard assembly and people's head be provided with the quick string subassembly of matched with, quick string subassembly be used for wearing the face guard assembly fast, the face guard assembly is connected with the piece that keeps off a fire.

Further, an air bag filter screen is arranged at the joint of the air bag and the mask assembly.

Further, a spring is supported in the air bag.

Furthermore, the quick fastening component is a matched magnet fastener, a nylon adhesive tape or a hook. The pairing means that one of the parts is connected with the mask assembly, and the other part is fixed on the head of a person through a fixing belt.

Further, the device also comprises a filter assembly; the air bag is respectively connected with the filter assembly and the air bottle assembly through a three-way valve assembly, and an air inlet of the filter assembly is communicated with the outside atmosphere; the air supply port of the filter assembly is connected with the air inlet A of the three-way valve assembly, the air supply port of the air bottle assembly is connected with the air inlet B of the three-way valve assembly, and the air outlet end of the three-way valve assembly is connected with the air bag.

Furthermore, the three-way valve assembly comprises a valve body, a piston positioned in the valve body and a reset rod used for resetting the piston, wherein one end of the reset rod is connected with the piston, and the other end of the reset rod is positioned outside the valve body.

Further, the three-way valve assembly further includes a one-way intake valve positioned in the path of the intake port A to the filter assembly.

Furthermore, the gas cylinder assembly comprises a gas cylinder, a cylinder head valve and a pressure reducing valve, wherein one end of the pressure reducing valve is directly connected with the gas inlet end of the three-way valve assembly, and the other end of the pressure reducing valve is connected with the cylinder head valve through a high-pressure gas guide pipe; or one end of the pressure reducing valve is connected with the air inlet end of the three-way valve assembly through a medium-pressure hose, and the other end of the pressure reducing valve is directly connected with the bottle head valve.

Furthermore, a layer of air bag protective sleeve is arranged outside the air bag.

The utility model provides a convenient reliable fire control self-rescuer, includes gas cylinder assembly and face guard assembly, the gas cylinder assembly is connected with the face guard assembly through the gasbag, the face guard assembly in have the oral cavity utensil of fixing the face guard with the tooth temporarily when fleing.

Compared with the prior art, the utility model has the following beneficial effects:

1. the expiratory valve is a one-way valve opened at a constant pressure, so that positive pressure can be always kept in the air bag, and people cannot inhale toxic and harmful gases in the escape process.

2. Before being equipped with a self-rescuer, firefighters covered their face with a portion of the headgear to exclude external hot air. After the self-rescuer is equipped and the mask is used, the head cover interferes with the mask, and the cheek part cannot be protected. The fire-blocking piece is connected to the face mask, so that the cheek can be effectively isolated from external hot air.

3. The utility model replaces the air duct with the spring, reduces the weight and leads the air flow to be smoother.

4. The protective sleeve is arranged outside the air bag, so that the air bag can be prevented from being scratched by thorns and the like.

5. The utility model ensures the rapid wearing of the mask through two ways: one is a quick fastening assembly composed of a hanging buckle or a nylon adhesive tape; secondly, a mouth tool is arranged in the face mask, so that the fire fighter can escape quickly when a big fire breaks out.

6. The utility model is provided with the reset rod for resetting the piston, the piston can be pushed back by the reset rod manually after the gas in the gas cylinder is used up, the gas path is switched to the filter part, and the escape time is prolonged.

7. The filter and the gas cylinder adopt a split structure, and the filter part can be removed, so that the volume is reduced, and the carrying is more convenient.

8. The utility model replaces the piston mechanism in the three-way valve with a one-way air inlet valve, has simple structure, reliable action and light weight, and increases the practicability of the utility model.

The utility model has simple structure, convenient operation, wide application range and more convenience and reliability.

Drawings

Fig. 1 is a schematic structural view of the fire self-rescuer and a fastening belt worn on the head of a person according to embodiment 1.

Fig. 2 is an enlarged view of a portion of the interior of the mask of fig. 1.

Fig. 3 is a schematic structural diagram of the fire self-rescuer in embodiment 2.

Fig. 4 is a cross-sectional view of the three-way valve assembly of fig. 3 in a filter function state.

Fig. 5 is a sectional view of the three-way valve assembly in fig. 3 in an escape state when the gas cylinder is in operation.

Fig. 6 is a schematic structural view of the fire self-rescuer of split structure in embodiment 3.

Fig. 7 is a schematic structural view of the fire self-rescuer of the second split structure of embodiment 4.

FIG. 8 is a schematic structural view of a one-way suction valve in the fire self-rescuer of embodiment 5.

Wherein, 1 is a compressed air cylinder, 2 is a cylinder head valve, 3 is a pressure reducing valve, 4 is an air bag, 5 is a spring, 6 is a mask, 7 is an expiratory valve, 8 is a fixing band, 9 is a magnet hanging buckle, 10 is a magnet fixed on the head of a person, 11 is a fastening band of the head of the person, 12 is a fire blocking sheet, 13 is an air bag filter screen, and 14 is a mouth tool; 15 is an air bag protective sleeve, 16 is a three-way valve assembly, 17 is a filter assembly, 18 is a reset rod, and 19 is a zipper of the air bag protective sleeve; 21 is a valve body, 22 is an air release hole, 23 is a piston, 24 is an air inlet A, 25 is an air inlet B, 26 is an air outlet end of a three-way valve, and 27 is a hand wheel of a bottle head valve; 28 is a high pressure gas-guide tube; 29 is a medium pressure air duct; 30 is the valve body of the one-way air suction valve, and 31 is the valve plate of the one-way air suction valve.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail with reference to the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model. The technical solution of the present invention is described in detail below with reference to the embodiments and the drawings, but the scope of protection is not limited thereto.

Example 1

As shown in fig. 1 and 2, a compressed air cylinder 1 is directly connected with a cylinder head valve 2, the cylinder head valve 2 is directly connected with a reducing valve 3, and lower-pressure air from the reducing valve 3 directly enters an air bag 4. In order to prevent the air bag from being squashed in the running of a person, the spring 5 is arranged inside the air bag, and in order to prevent sundries from falling into the air passage, an air bag filter screen 13 is arranged at the opening of the air bag. One section of the fixing band 8 is connected with the face mask 6, the other section is connected with the magnet hanging buckle 9, the magnet hanging buckle 9 can be instantly attracted with the magnet 10 fixed on the head (the magnet is fixed through the fastening band 11 fixed on the head of a person), and the face mask 6 is also provided with a fire blocking piece 12 and a mouth tool 14.

When in standby use, the whole self-rescuer can be placed in a satchel, or in a pocket of a person, or in a special box. When escaping, the face mask 6 is fished out to open the bottle valve 2 for escaping. If the person needs to use two hands to treat the obstacle during the escape process, the mouth piece 14 can be bitten by teeth so that the face mask 6 is attached to the face, and if the person has no obstacle, the person can hold the face mask 6 by hands so that the face mask is attached to the face.

In order to increase the convenience, the mask can be attracted to the magnet on the head through the magnet hanging buckle 9, and the mask can be worn instantly. By the same token, if the magnet hanging buckle 9 is replaced by a nylon adhesive tape or a quick hook, the purpose of quickly wearing the mask can be achieved.

Example 2

The embodiment is a multifunctional type of a convenient and reliable self-rescuer, and a filter for filtering smoke dust in fire extinguishing operation is added. As shown in fig. 3, 4 and 5, the compressed air cylinder 1 is connected to the cylinder head valve 2, the outlet of the cylinder head valve 2 is connected to the pressure reducing valve 3, the outlet of the pressure reducing valve 3 is connected to the inlet B25 of the three-way valve assembly 16, and the inlet a 24 of the three-way valve assembly 16 is connected to the filter assembly 17. The three-way valve assembly 16 includes a valve body 21, a piston 23, and a return lever 18. Piston 23 is located in valve body 21, and reset rod 18 one end is connected with piston 23, and the other end stretches out the organism.

Specific procedure for use in example 2: when people normally extinguish fire or work in a high-dust environment, the filter assembly part is adopted for respiratory protection. The air with outside dense smoke poison gas or dust is filtered to become clean air, enters the air inlet A of the filter of the three-way valve assembly, and then enters the face mask through the air bag and the air bag filter screen from the air outlet end of the three-way valve assembly for the breathing of people.

When a person is in emergency escape, the hand wheel 27 of the cylinder head valve is rotated to open the gas cylinder, compressed air stored in the gas cylinder enters the gas inlet B25 of the three-way valve assembly 16 through the pressure reducing valve 3, the piston 23 moves towards the gas outlet end of the three-way valve under the action of the compressed air, and when the gas release hole 22 in the piston 23 is exposed at the gas outlet end of the three-way valve, the compressed air enters the gas outlet end of the three-way valve through the gas release hole and enters the gas bag 4 (at the moment, the piston blocks the gas inlet B of the three-way valve assembly). One part of the expired air from the person containing carbon dioxide is vented through the mask exhalation valve and the other part is passed into the air bag. Because the expiratory valve is a constant pressure opening type with the preset pressure of 600Pa, the pressure in the air bag is ensured to be kept positive relative to the external air under any condition, and external smoke dust cannot enter the air bag. Thus, a portion of the expired air is mixed with the fresh air in the cylinder in the bladder, diluting the carbon dioxide. Because the compressed air is oxygen-enriched air, the oxygen reduced in the exhalation of the human body can be compensated by the part which is higher than 21 percent of the oxygen-enriched air, so that the oxygen content in the air bag is still not less than 21 percent of the oxygen content in normal air. When a person inhales, the mixed air in the air bag can be sucked into the lung. The operation is repeated in a circulating way until the personnel escape from the dangerous area.

In order to save stored gas in the gas cylinder or use up the stored gas in the gas cylinder in the process of escaping, the valve of the gas cylinder can be closed, the reset rod 18 is pressed back manually, the piston 23 moves towards the direction of the pressure reducing valve 3, the gas inlet B of the three-way valve assembly blocked by the piston is opened again, and people can breathe the external air filtered by the filter assembly.

Example 3

As shown in fig. 6, the present embodiment uses the high pressure air conduit 28 to connect the cylinder head valve 2 and the pressure reducing valve 3, so as to realize the separation of the compressed air cylinder 1 and the filter assembly 17. Wherein the compressed air cylinder 1 is connected with the cylinder head valve 2, the air outlet of the cylinder head valve 2 is connected with the pressure reducing valve 3 through the high-pressure air duct 28, and the air outlet of the pressure reducing valve 3 is connected with the rest part of the air cylinder inlet end of the three-way valve assembly 16, which is the same as the embodiment 2. This embodiment has adopted the split type structure of gas cylinder and main part separation, has reduced the unit volume, and it is more convenient to carry.

Example 4

As shown in fig. 7, the cylinder head valve 2 of the present embodiment is directly connected to the pressure reducing valve 3, and the air at a lower pressure from the pressure reducing valve 3 enters the three-way valve assembly 16 through the medium pressure air duct 29, which is otherwise the same as that of embodiment 3.

Example 5

As shown in fig. 8, this embodiment replaces the piston mechanism in the three-way valve assembly of embodiment 2 with a one-way suction valve. The valve body 30 of the one-way air suction valve is arranged at an air inlet A24 of the three-way valve assembly, and the valve plate 31 of the one-way air suction valve is arranged on the valve body 30 of the one-way air suction valve. When the fireman normally puts out a fire, the filter assembly part is adopted for respiratory protection. The air with outside dense smoke poison gas or dust is filtered to become clean air, enters the filter air inlet A of the three-way valve assembly through the one-way air suction valve, and then enters the face mask through the air bag and the air bag filter screen from the air outlet end of the three-way valve assembly for the breathing of people.

When people escape in an emergency, a hand wheel of the bottle head valve 2 is rotated to open the gas bottle, compressed air stored in the gas bottle enters the air inlet B25 of the three-way valve assembly through the pressure reducing valve, and because the air pressure in the three-way valve is opposite to the opening direction of the one-way air suction valve, the air cannot enter the air inlet A of the three-way valve through the one-way air suction valve and only can flow to the air outlet end of the three-way valve, the air in the gas bottle can directly enter the gas bag and the mask for the people to breathe.

If the stored air in the air bottle is used up in the escape process, the valve plate of the one-way air suction valve has no back pressure, the outside air can enter the three-way valve through the one-way air suction valve, and people can breathe the outside air filtered by the filter assembly.

While the utility model has been described in further detail with reference to specific preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. The utility model provides a convenient reliable fire control self-rescuer, includes gas cylinder assembly and face guard assembly, its characterized in that, the gas cylinder assembly is connected with the face guard assembly through the gasbag, face guard assembly and people's head be provided with the quick string subassembly of matched with, quick string subassembly be used for wearing the face guard assembly fast, the face guard assembly is connected with the piece that keeps off a fire.

2. A convenient and reliable fire self-rescuer as claimed in claim 1, wherein an airbag screen is provided at the junction of said airbag and mask assembly.

3. A convenient and reliable fire self-rescuer according to claim 1, wherein a spring is supported within said air bag.

4. A convenient and reliable fire self-rescuer as claimed in claim 1, wherein said quick hitch assembly is a paired magnet hitch or velcro or hook.

5. A convenient and reliable fire self-rescuer as claimed in claim 1, further comprising a filter assembly; the air bag is respectively connected with the filter assembly and the air bottle assembly through a three-way valve assembly, and an air inlet of the filter assembly is communicated with the outside atmosphere; the air supply port of the filter assembly is connected with the air inlet A of the three-way valve assembly, the air supply port of the air bottle assembly is connected with the air inlet B of the three-way valve assembly, and the air outlet end of the three-way valve assembly is connected with the air bag.

6. A convenient and reliable fire self-rescuer as claimed in claim 5, wherein said three-way valve assembly comprises a valve body, a piston disposed in the valve body, and a reset rod for resetting the piston, one end of said reset rod being connected to the piston and the other end being disposed outside the valve body.

7. A fire self-rescuer as claimed in claim 5 or 6, wherein said three-way valve assembly further comprises a one-way air inlet valve located in the path of air inlet A to the filter assembly.

8. The convenient and reliable fire-fighting self-rescuer according to claim 5 or 6, characterized in that the gas cylinder assembly comprises a gas cylinder, a cylinder head valve and a pressure reducing valve, one end of the pressure reducing valve is directly connected with the gas inlet end of the three-way valve assembly, and the other end is connected with the cylinder head valve through a high-pressure gas guide pipe; or one end of the pressure reducing valve is connected with the air inlet end of the three-way valve assembly through a medium-pressure hose, and the other end of the pressure reducing valve is directly connected with the bottle head valve.

9. A convenient and reliable fire self-rescuer as claimed in claim 1, wherein said balloon is further provided with a balloon protective cover.

10. The utility model provides a convenient reliable fire control self-rescuer, includes gas cylinder assembly and face guard assembly, its characterized in that, gas cylinder assembly is connected with the face guard assembly through the gasbag, the face guard assembly in have the oral cavity utensil of fixing the face guard with the tooth temporarily when fleing.