CN219878963U - Portable and efficient fire-fighting respiratory protection self-rescuer - Google Patents

Abstract

The utility model relates to the technical field of fire-fighting products, in particular to a portable and efficient fire-fighting respiratory protection self-rescuer; comprises a gas cylinder assembly, a mask assembly and a filtering system; the mask assembly is connected with the switching cavity through the air duct, and the switching cavity is respectively connected with the air bottle assembly and the filtering system; a one-way valve is arranged at the joint of the switching cavity and the filtering system; the outer wall of the air duct is connected with an air bag, and the air duct is communicated with the air bag through a through hole; the self-weight self-help device is simple in structure and easy to operate, can save operation time, further reduces self weight of the fire-fighting respiratory protection self-help device, and improves practicality and effectiveness of the fire-fighting respiratory protection self-help device.

Description

Portable and efficient fire-fighting respiratory protection self-rescuer

Technical Field

The utility model belongs to the technical field of fire-fighting products, and particularly relates to a portable and efficient fire-fighting respiratory protection self-rescuer.

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 a light and efficient fire-fighting respiratory protection self-rescuer, so as to further reduce the dead weight of the fire-fighting respiratory protection self-rescuer and improve the practicability and 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 light and efficient fire-fighting respiratory protection self-rescuer comprises a gas cylinder assembly, a mask assembly and a filtering system; the mask assembly is connected with the switching cavity through the air duct, and the switching cavity is respectively connected with the air bottle assembly and the filtering system; a one-way valve is arranged at the joint of the switching cavity and the filtering system; the outer wall of the air duct is connected with an air bag, and the air duct is communicated with the air bag through a through hole.

Further, the air bag is connected to one end of the air duct, which is adjacent to the switching cavity.

Further, the air duct part in the air bag is a hard tube body, and the rest part of the air duct is a soft tube body.

Further, an air bag protecting sleeve is connected to the air duct, and the air bag is contained in the air bag protecting sleeve.

Furthermore, one end of the air bag protecting sleeve is connected with the outer wall of the air duct in a surrounding mode, the other end of the air bag protecting sleeve is a free end, and the free end is provided with a locking buckle.

Further, the air bag is an elastic air bag. 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 the double air bag structure.

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

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 a piston, a second one-way valve, a spring and the like, can realize filtration and breathing and gas bottle breathing by only one switching cavity, optimizes the structure of the air bag, lightens the whole weight by about 0.5 kg, can be taken in the protective cover when the air supply escape function is not used, can be pulled up to release the air bag when the air supply escape is needed, is convenient and rapid to operate, has simpler operation steps, and is more practical.

The fire fighter wears the self-rescuer fast before getting into the operation of scene of a fire, opens the face guard 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 mask valve is closed by fire fighters to inhale, external gas is filtered by the filter element, enters the one-way valve, enters the gas guide pipe through the switching cavity, reaches the mask to exhale into the body, and exhales through the mask valve when exhaling.

Under emergency conditions, the valve of the gas cylinder is opened, the gas bag protecting sleeve is pulled up, the gas bag is discharged, gas in the gas pipe is positive-pressure oxygen-enriched gas through the switching cavity and respectively enters the elastic gas bag and the gas pipe, a firefighter inhales the gas, part of gas is exhaled to the outside through the mask valve during exhalation, and part of gas returns to the flame-retardant elastic gas bag and is 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 portable and efficient fire-fighting respiratory protection self-rescuer according to the present utility model.

Fig. 5 is a schematic view of a part of the structure of the airbag of fig. 4 after the airbag is released.

Fig. 6 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-an air duct hard part, 42-an air duct soft part, 43-a flame-retardant elastic air bag, 44-an air bag protecting sleeve and 45-a switching cavity.

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 lightweight and efficient fire-fighting respiratory protection self-rescuer, which comprises a gas cylinder assembly, a mask assembly and a filtering system; the mask assembly is provided with a mask valve 1; as shown in fig. 6, 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 structure of the mask valve 1 is the prior art, and the mask valve 1 can rapidly switch the type of the inhaled air into the outside air and the filtered air. 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 the switching cavity 45 through an air duct. The airway includes an upper airway tube soft portion 42 and an airway tube hard portion 41 connected to the lower portion of the airway tube soft portion 42.

As shown in fig. 4 and 5, the mask assembly is connected with the switching cavity 45 through an air duct, the switching cavity 45 is a closed cavity, 2 interfaces are arranged at the top of the switching cavity 45, and the mask assembly is respectively connected with the air duct and the high-pressure air duct 11 through the 2 interfaces; the bottom of the switching cavity 45 is connected with a filtering system, the filtering system is the prior art, a filter element is arranged in the filtering system, and a one-way valve 10 is arranged at the joint of the switching cavity 45 and the filter element 7.

The outer wall of the air duct is connected with a flame-retardant elastic air bag 43, the air duct part positioned in the flame-retardant elastic air bag 43 is an air duct hard part 41, and the rest part of the air duct is an air duct soft part 42. The air duct hardware portion 41 is provided with a through hole, and communicates with the flame retardant elastic balloon 43 through the through hole. The airway hardware 41 is sealingly connected to an interface of the adapter cavity 45. An air bag protecting sleeve 44 is fixedly connected to the air duct soft body part 42, one end of the air bag protecting sleeve 44, which is fixedly connected, is connected to the outer wall of the air duct soft body part 42 in a surrounding mode, the other end of the air bag protecting sleeve is a free end, locking buckles are arranged at the free end of the air bag protecting sleeve, the flame-retardant elastic air bag 43 can be contained in the air bag protecting sleeve 44 when the air bag protecting sleeve 44 is pulled down, and the air bag protecting sleeve 44 can be pulled up to release the flame-retardant elastic air bag 43 when the air bag protecting sleeve is used.

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 one interface of the switching cavity 45 in a sealing way 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 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 duct and then enters the mask assembly, and the firefighter inhales the body; when the firefighter exhales, the check valve 10 is closed, the firefighter exhales out of the mask assembly through the mask valve 1 on the mask assembly, and the flame retardant elastic air bag 43 is received in the air bag protecting sleeve 44 in a closed state during the process of breathing and filtering the air by the firefighter.

When the fireman 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 or a fire wall to withdraw, the gas cylinder valve switch is opened, the air bag protecting sleeve 44 is pulled up, and the flame-retardant elastic air bag 43 is released; the gas in the gas cylinder enters the switching cavity 45 through the high-pressure gas guide pipe 11, and respectively enters the flame-retardant elastic gas bag 43 and the gas guide pipe, the flame-retardant elastic gas bag 43 is communicated with the gas guide pipe hard body part 41, so that the gas in the flame-retardant elastic gas bag 43 and the gas guide pipe is positive-pressure oxygen-enriched gas, a fire fighter inhales the gas, and part of the gas is exhaled to the outside through the mask valve 1 during exhalation, and part of the gas is returned to the flame-retardant elastic gas bag 43. And sequentially repeating the steps.

After the gas cylinder is used up, the air bag protecting sleeve 44 is pulled down to collect the flame-retardant elastic air bag 43, and the system enters a filtering mode.

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 (10)

1. A light and efficient fire-fighting respiratory protection self-rescuer comprises a gas cylinder assembly, a mask assembly and a filtering system; the mask assembly is connected with the switching cavity through the air duct, and the switching cavity is respectively connected with the air bottle assembly and the filtering system; a one-way valve is arranged at the joint of the switching cavity and the filtering system; the outer wall of the air duct is connected with an air bag, and the air duct is communicated with the air bag through a through hole.

2. The lightweight, efficient fire protection respiratory protection self-rescuer as recited in claim 1, wherein the balloon is attached to the airway at an end adjacent the adapter cavity.

3. The portable and efficient fire-fighting respiratory protection self-rescuer according to claim 2, wherein the air duct part in the air bag is a hard tube body, and the rest part of the air duct is a soft tube body.

4. A lightweight and efficient fire protection respiratory protection self-rescuer as recited in claim 3 wherein the airway is connected with an airbag protective sleeve, the airbag being received within the airbag protective sleeve.

5. The portable and efficient fire-fighting respiratory protection self-rescuer according to claim 4, wherein one end of the air bag protecting sleeve is connected with the outer wall of the air duct in a surrounding manner, the other end of the air bag protecting sleeve is a free end, and the free end is provided with a locking buckle.

6. The lightweight, efficient fire respiratory protection self-rescuer as recited in any one of claims 1-5, wherein the air bag is an elastic air bag.

7. The portable and efficient fire-fighting respiratory protection self-rescuer 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).

8. The portable and efficient fire-fighting respiratory protection self-rescuer 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.

9. A lightweight, efficient fire protection respiratory protection self-rescuer as claimed in claim 8, characterized in that said universal valve is provided with a gas-filling interface (13).

10. A lightweight, efficient fire protection respiratory protection self-rescuer as claimed in claim 1, characterized in that the mask assembly is of full or half mask construction, provided with goggles, a sound generator (2) and a communication device (3).