CN218923610U

CN218923610U - Fire-fighting respiratory protection self-rescuer capable of effectively reducing dead weight

Info

Publication number: CN218923610U
Application number: CN202220972072.2U
Authority: CN
Inventors: 胡加斌; 苏金元; 岳志伟; 党军; 倪臣; 郭四同
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-04-26
Filing date: 2022-04-26
Publication date: 2023-04-28
Anticipated expiration: 2032-04-26

Abstract

The utility model relates to the technical field of fire-fighting products, in particular to a fire-fighting respiratory protection self-rescuer capable of effectively reducing dead weight; comprises a gas cylinder assembly, a mask assembly and a filtering system; the mask assembly is connected with the air supply rapid switching device through an air duct; the air supply rapid switching device comprises a three-way valve body, an air guide channel and an elastic air bag, wherein the three-way valve body is positioned in the air cylinder; the three-way valve body is respectively connected with the air duct, the air bottle assembly and the air duct; the air guide channel is connected with the elastic air bag; the self-weight of the fire-fighting respiratory protection self-rescuer is further reduced, and the practicability and the effectiveness of the fire-fighting respiratory protection self-rescuer are improved.

Description

Fire-fighting respiratory protection self-rescuer capable of effectively reducing dead weight

Technical Field

The utility model belongs to the technical field of fire-fighting products, and particularly relates to a fire-fighting respiratory protection self-rescuer capable of effectively reducing dead weight and convenient to carry.

Background

The fire-fighting respiratory protection self-rescuer is also called as an air respirator and a fire-fighting air respirator. At present, the self-rescuer has some problems, mainly including heavy weight, incapability of being used repeatedly, complicated wearing and starting steps, so that the process of starting the self-rescuer for use in emergency is prolonged, and the quick wearing and quick escape of the self-rescuer are not facilitated. The above problems all greatly reduce the practicality and effectiveness of the existing self-rescuer.

Based on the technical problems, a convenient and reliable fire-fighting respiratory protection self-rescuer (shown in figures 1, 2 and 3) is developed, the service time of the self-rescuer is effectively prolonged on the basis of reducing the volume and weight of the self-rescuer, and the operation steps are simplified; the air bag is sleeved on the shoulders or is designed as a whole with the fire-fighting head cover, as shown in figures 2 and 3: the air supply rapid switching device is characterized in that an air cylinder 19 is arranged in a cavity of the air supply rapid switching device, two pistons 15 and exhaust holes 20 are symmetrically arranged in the air cylinder 19, two air bag interfaces 18 are symmetrically arranged on two sides of the air cylinder 19 on the cavity wall, the air bag 5 is U-shaped, and two ends of the air bag 5 are respectively connected with one air bag interface 18. A second one-way valve 16 is arranged between the air bag interface 18 and the piston 15; the second check valve 16 is connected with a spring 17, and the second check valve 16 is pushed by the tensile force of the spring 17 to close the air inlet passage of the air bag 5. The gas supply quick switching device pushes the piston 15 through the switch 8 for supplying gas into the gas cylinder assembly through the gas guide 4 and the gas bag 5.

However, the corresponding structure needs a set of valve structure to control the gas to enter the air bag, so that the weight of the self-rescuer is increased intangibly, and meanwhile, the air bag is also sleeved on the shoulders all the time in the non-use process, which is not beneficial to marching operations and is easy to damage. For firefighters in a fire scene, the weight of equipment borne by the body affects a wide variety of actions and physical forces to a great extent; based on the above structure, there is a need to develop a fire-fighting respiratory protection self-rescuer with lighter weight.

Disclosure of Invention

The utility model overcomes the defects of the prior art, and provides the fire-fighting respiratory protection self-rescuer capable of effectively reducing the dead weight so as to further reduce the dead weight of the fire-fighting respiratory protection self-rescuer and improve the practicability and the effectiveness of the fire-fighting respiratory protection self-rescuer.

In order to achieve the above purpose, the present utility model is realized by the following technical scheme.

A fire-fighting respiratory protection self-rescuer capable of effectively reducing dead weight comprises a gas cylinder assembly, a mask assembly and a filtering system; the mask assembly is connected with the air supply rapid switching device through an air duct; the air supply rapid switching device comprises a three-way valve body, an air guide channel and an elastic air bag, wherein the three-way valve body is positioned in the air cylinder; the three-way valve body is respectively connected with the air duct, the air bottle assembly and the air duct; the air guide channel is connected with the elastic air bag.

Further, the air supply quick switching device is arranged in the shell, the shell is provided with an openable cover body, and the cover body is opened to enable the inflated elastic air bag to extend out of the shell.

Further, the air cylinder is connected with the filtering system through a one-way valve, and the elastic air bag is communicated with the air cylinder.

Further, the three-way valve body is connected with a switch.

Further, the three-way valve body is connected with the gas cylinder assembly through a quick connector.

Further, the mask assembly is provided with a mask valve, and the mask valve comprises an adjusting pressing plate, an adjusting button, a valve cover and a valve core assembly; the valve cover is provided with an air hole; the mask valve opens the through passage of the gas in the mask and the external gas by pushing the adjusting button, and the mask valve is converted into a one-way valve function by pressing the adjusting button.

Further, the gas cylinder assembly comprises a high-pressure gas cylinder and a high-pressure gas guide pipe, and the high-pressure gas cylinder is connected with the high-pressure gas guide pipe through a general valve.

Further, the universal valve is provided with an air supplementing interface.

Further, the mask assembly is a full or half mask construction.

Still further, the mask assembly is provided with goggles, a sound generator, and a communication device.

Furthermore, the air bag is a double air bag, has elasticity and flame retardance, and can be also arranged into a single air bag structure from a double air bag structure.

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

compared with the prior self-rescuer, the self-rescuer has lighter weight, removes the structures such as the piston, the second one-way valve, the spring and the like, optimizes the air bag structure, lightens the whole weight by about 0.3 to 0.4 kg, stores the air bag in the shell body when the air supply escape function is not used, does not need to be hung on the body all the time, and is more convenient to carry. The structure of the present utility model is more practical.

The fire fighter wears the self-rescuer fast before getting into the operation of scene of a fire, opens face guard valve and gas cylinder valve, directly breathes external gas, and the effectual cheek of will cutting off with outside hot air when the operation reduces the use loss to gas cylinder oxygen and filter equipment. And meanwhile, the external gas, the filtered gas or the compressed gas of the gas cylinder can be rapidly switched according to the working environment.

When the fire fighter closes the mask valve to inhale, external gas is filtered by the filter element, enters the one-way valve, enters the air duct through the air cylinder, reaches the mask to exhale into the body, and exhales through the mask valve when exhaling.

When an emergency is met, the change-over switch is turned on, the cover body on the shell is turned on, gas bottle gas passes through the change-over switch and enters the left and right gas guide channels to respectively enter the elastic air bags and the air cylinders, the air bags and the air cylinders are communicated, so that the air bags and the air cylinders are filled with positive-pressure oxygen-enriched gas, a firefighter inhales the gas, part of the gas exhales to the outside through the mask valve during exhalation, and part of the gas enters the flame-retardant elastic air bags to be repeated in sequence.

The gas cylinder has the gas supplementing structure, can be interconnected and communicated with a gas supplementing device for urban fire rescue, is convenient and quick to supplement gas and can be reused, and the requirement on the protection time of firefighters in different fire fighting environments can be met by changing the volume of the gas cylinder at any time; and the filter element has long protection time and is convenient to replace.

Drawings

Fig. 1 is a schematic structural view of a prior art fire-fighting respiratory protection self-rescuer.

Fig. 2 is a schematic structural diagram of the switching device in fig. 1.

Fig. 3 is a top view of fig. 2.

Fig. 4 is a schematic structural view of the fire-fighting respiratory protection self-rescuer for effectively reducing dead weight according to the present utility model.

Fig. 5 is a schematic structural diagram of the fast switching device for air supply in fig. 4.

Fig. 6 is a top view of fig. 5.

Fig. 7 is an exploded view of the mask valve.

In the figure, the mask valve 1, the sound generator 2, the communication device 3, the air duct 4, the air bag 5, the quick connector 6, the filter core 7, the switch 8, the filter core protection grating 9, the check valve 10, the high-pressure air duct 11, the general valve switch 12, the air supplementing interface 13, the high-pressure air bottle 14, the piston 15, the check valve 16, the second check valve 17, the spring 18, the air bag interface 19, the cylinder 20, the exhaust hole 23, the guide valve rod 24, the breathing membrane 25, the valve core membrane seat 26, the valve core spring 27, the adjusting pressing plate 28, the adjusting pressing head 29, the valve cover 30, the valve core cover 31, the valve core cover 32, the valve core O-shaped ring 33, the valve core seat 34 and the valve seat 34.

41-three-way valve body, 42-air guide channel, 43-flame-retardant elastic air bag, 44-shell, 45-air bag storage chamber and 46-storage chamber door.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail by combining the embodiments and the drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. The following describes the technical scheme of the present utility model in detail with reference to examples and drawings, but the scope of protection is not limited thereto.

As shown in fig. 4, the embodiment provides a fire-fighting respiratory protection self-rescuer capable of effectively reducing the dead weight, which comprises a gas cylinder assembly, a mask assembly, a gas supply rapid switching device and a filtering system; the mask assembly is provided with a mask valve 1; as shown in fig. 7, the mask valve 1 includes an adjusting pressure plate 27, an adjusting check ring 28, an adjusting button 29, a valve cover 30, and a valve core assembly; the valve core assembly is provided with a valve core cover 31, a valve core spring 26 is arranged in the valve core cover 31, and a valve core diaphragm seat 25, a breathing diaphragm 24, a guide valve rod 23, a valve core O-shaped ring 32, a valve core base 33 and a valve seat 34 are sequentially arranged on the inner side of the valve core spring 26; the valve cover 30 is provided with ventilation holes; the mask valve 1 opens the through passage of the gas in the mask and the external gas by pushing the adjusting button 29, and pressing the adjusting button 29 converts the mask valve 1 into a one-way valve function. The type of the gas to be sucked can be rapidly switched to be the external gas and the filtered gas. The face mask is a full face mask or a half face mask, and the full face mask is provided with goggles. The mask is provided with a sound generator 2 and a communication device 3 on both sides of the mask valve 1. The mask valve 1 is connected with a rapid air supply switching device through an air duct 4.

As shown in fig. 5 and 6, the rapid switching device for air supply includes a three-way valve body 41, left and right air guide passages 42, and a flame retardant elastic air bag 43, which are located in the cylinder 19; the air supply quick switching device is arranged in a shell 44, an air bag storage chamber 45 is arranged in the shell 44 at the left and right sides, an openable storage chamber door 46 is arranged on the shell 44 adjacent to the air bag storage chamber 45, and the cover body is opened to enable the inflated flame-retardant elastic air bag 43 to extend out of the shell 44.

The three-way valve body 41 is connected with the switch 8, and the three-way valve body 41 is respectively connected with the air duct 4, the high-pressure air duct 11 of the air bottle assembly and the air duct 42; the air guide channel 42 is connected with a flame-retardant elastic air bag 43. The air cylinder 19 is connected with the filter element 7 of the filtering system through the one-way valve 10, and the flame-retardant elastic air bag 43 is communicated with the air cylinder 19.

The gas cylinder assembly comprises a high-pressure gas cylinder 14 and a high-pressure gas guide pipe 11, and the high-pressure gas cylinder 14 is connected with the high-pressure gas guide pipe 11 through a general valve. The high-pressure air duct 11 is connected with the three-way valve body 41 through the quick connector 6. The universal valve is in the prior art, and the valve interface can be used for butting high-pressure gas cylinders of different types, so that the high-pressure gas cylinders can be replaced. The universal valve is provided with a gas supplementing interface 13. According to the different demands of fire-fighting tasks, the gas cylinders with different models can be replaced to achieve the change of the gas supply time. In forest fire control, the gas cylinders with small volume and light weight can meet the minimum time and minimum load requirements required by rapid evacuation of forest firefighters in emergency, and in urban fire rescue, the large-volume gas cylinders can be replaced to achieve the purpose of prolonging the gas supply time; the valve design adopts a quantitative flow design, and the rapid air supplementing port is used for conveniently and rapidly supplementing air, so that the valve is convenient for firefighters to repeatedly use; the gas cylinder gas adopts oxygen-enriched gas with 30% oxygen so as to achieve the purpose of improving the athletic ability of firefighters.

The specific use process is as follows: the mask, the air duct, the air bottle, the standby filter element and the like of the self-rescuer can be placed in a satchel or on the back of a professional tactic, so that the self-rescuer is convenient to carry on march, and can be assembled and worn within 2 minutes before entering a fire scene. The switch 8 is closed before entering the fire, and the general valve switch 12 connected with the high-pressure gas cylinder 14 is opened. The switch 8 may be omitted, and the general valve switch 12 connected to the high-pressure gas cylinder 14 may be used as a control switch.

The fire-fighting mask is worn before entering a fire scene operation, meanwhile, the mask valve adjusting button 29 is opened, the adjusting pressing plate 27 is pushed, the adjusting check ring 28 drives the guide valve rod 23 and the breathing membrane 24 to move forwards together, a mask and an external direct-through air guide channel are formed, and a firefighter can breathe external air directly.

During operation in a fire scene, if a fire fighter breathes outside air and has smoke or high-temperature particles, the fire fighter can breathe and filter the air by quickly pressing the adjusting button 29 of the mask valve 1. When a firefighter inhales, external air passes through the filter element 7, passes through the one-way valve 10, enters the air guide pipe 4 and then enters the mask, and the firefighter inhales the body; when the firefighter exhales, the check valve 10 is closed, the firefighter exhales out of the mask through the mask valve 1 on the mask, and the flame-retardant elastic air bag 43 is in a closed state during the process of breathing and filtering the gas by the firefighter.

When the fire fighter feels that the gas filtered by the filter element 7 can not meet the respiratory requirement or is trapped by big fire or needs to pass through a fire scene and a fire wall to withdraw, the switch 8 can be quickly opened, meanwhile, the storage chamber door 46 on the air bag storage chamber 45 is opened, the gas bottle gas enters the left and right air guide channels 42 through the switch through the high-pressure air guide pipe 11, respectively enters the left and right flame-retardant elastic air bags 43 and the air cylinders 19, the flame-retardant elastic air bags 43 are communicated with the air cylinders 19, the gas in the flame-retardant elastic air bags 43 and the air cylinders 19 is positive-pressure oxygen-enriched gas, the fire fighter inhales the gas, part of the gas exhales to the outside through the mask valve during exhalation, and the other part of the gas enters the flame-retardant elastic air bags. And sequentially repeating the steps.

After the gas cylinder is used up, the air bag must be plugged into the storage chamber, the storage chamber door 46 of the storage chamber is closed, and the system can be put into a filtering mode, so that the device has higher requirements on the air bag material, is flame-retardant, has high strength and is better in elasticity.

While the utility model has been described in detail in connection with specific preferred embodiments thereof, it is not to be construed as limited thereto, but rather as a result of a simple deduction or substitution by a person having ordinary skill in the art to which the utility model pertains without departing from the scope of the utility model defined by the appended claims.

Claims

1. A fire-fighting respiratory protection self-rescuer capable of effectively reducing dead weight comprises a gas cylinder assembly, a mask assembly and a filtering system; the mask assembly is characterized in that the mask assembly is connected with the air supply rapid switching device through an air duct; the air supply rapid switching device comprises a three-way valve body, an air guide channel and an elastic air bag, wherein the three-way valve body is positioned in the air cylinder; the three-way valve body is respectively connected with the air duct, the air bottle assembly and the air duct; the air guide channel is connected with the elastic air bag.

2. The fire protection respiratory protection self-rescuer for effectively reducing the dead weight according to claim 1, wherein the air supply quick switching device is arranged in a shell, the shell is provided with an openable cover body, and the cover body is opened to enable the inflated elastic air bag to extend out of the shell.

3. The fire protection respiratory protection self-rescuer for effectively reducing dead weight according to claim 1, wherein the air cylinder is connected with the filtering system through a one-way valve, and the elastic air bag is communicated with the air cylinder.

4. The fire protection respiratory protection self-rescuer for effectively reducing dead weight according to claim 1, wherein the three-way valve body is connected with a switch.

5. The fire protection respiratory protection self-rescuer for effectively reducing dead weight according to claim 1, wherein the three-way valve body is connected with the gas cylinder assembly through a quick connector.

6. A fire protection respiratory protection self-rescuer effective in reducing dead weight according to claim 1, characterized in that the mask assembly is provided with a mask valve (1), the mask valve (1) comprising an adjusting pressure plate (27), an adjusting button (29), a valve cover and a valve core assembly; the valve cover is provided with an air hole; the mask valve (1) opens the direct passage of the gas in the mask and the external gas by pushing the adjusting button (29), and the mask valve (1) is converted into a one-way valve function by pressing the adjusting button (29).

7. The fire-fighting respiratory protection self-rescuer for effectively reducing the dead weight according to claim 1, wherein the gas cylinder assembly comprises a high-pressure gas cylinder (14) and a high-pressure gas guide tube (11), and the high-pressure gas cylinder (14) is connected with the high-pressure gas guide tube (11) through a universal valve.

8. Fire protection respiratory protection self-rescuer effective in reducing dead weight according to claim 7, characterized in that the universal valve is provided with an air-make-up interface (13).

9. The fire protection respiratory protection self-rescuer effective to reduce dead weight according to claim 1, wherein the face mask assembly is a full face mask or half face mask construction.

10. The fire protection respiratory protection self-rescuer effective to reduce the dead weight according to claim 9, characterized in that the mask assembly is provided with goggles, a sound generator (2) and a communication device (3).