Integrated backpack air breathing foam fire extinguishing equipment suitable for various disasters

Abstract

The invention relates to integrated backpack air breathing foam fire extinguishing equipment suitable for various disasters, and belongs to the technical field of fire extinguishing equipment, the integrated backpack air breathing foam fire extinguishing equipment comprises a back frame assembly, a liquid storage tank assembly, a multifunctional spray gun, a supply valve and a breathing mask, the liquid storage tank assembly is detachably connected to the back frame assembly, and the multifunctional spray gun communicates with the liquid storage tank assembly through a hose; the back frame assembly comprises a back frame body, a high-pressure compressed air cylinder and a pressure reducing valve, the high-pressure compressed air cylinder is detachably installed on the back frame body, the pressure reducing valve is arranged on the high-pressure compressed air cylinder, and the high-pressure compressed air cylinder supplies compressed air to the liquid storage tank assembly, the multifunctional spray gun, the supply valve and the breathing mask. The fire rescue robot has the advantages of integration, multiple functions, high efficiency, high maneuverability, safety and reliability, multiple pain points in the prior art are effectively solved, and the higher requirements for applicability to multiple disaster types and personal protection in modern fire rescue are met.

Description

Technical Field

[0001] This invention relates to the field of fire extinguishing equipment technology, and in particular to an integrated backpack breathing foam fire extinguishing device applicable to multiple disasters. Background Technology

[0002] Traditional portable fire extinguishers (such as dry powder and carbon dioxide fire extinguishers) have disadvantages such as limited extinguishing agent capacity, short effective spray time, easy reignition after extinguishing, and lack of respiratory protection for operators. Although backpack fire extinguishing devices increase capacity, most of them have only one function, either spraying foam or water, making it difficult to deal with complex fire scenarios, such as extinguishing solid fires and dealing with liquid fuel or electrical fires.

[0003] Existing positive pressure breathing apparatus (SCBA) provides breathing protection for firefighters, but usually does not integrate fire extinguishing functions. Firefighters need to carry both breathing apparatus and fire extinguishing equipment at the same time, which is too heavy and inconvenient for movement. In addition, for special fires such as emerging energy storage power stations and new energy vehicle batteries, higher fire extinguishing efficiency and specific fire extinguishing agents are required, and traditional equipment is inadequate.

[0004] While some backpack foam fire extinguishing systems exist, they typically lack fine water mist extinguishing capabilities and have fixed modes, making it impossible to flexibly switch between a fine water mist mode that requires rapid cooling and smoke suppression and a direct current / foam mode that requires long-distance spraying and penetration. Furthermore, the single backpack mode is limited when there is long-distance mobility or operator fatigue.

[0005] Therefore, there is an urgent need for a fire extinguishing equipment that is highly integrated, fully functional, flexible in mode, combines personnel protection with efficient fire extinguishing capabilities, and can adapt to various disaster environments. To this end, we propose a multi-hazard applicable integrated backpack breathing foam fire extinguishing equipment, which has the advantages of integration, multi-functionality, high efficiency, high mobility, and safety and reliability. It effectively solves many pain points in existing technologies and meets the higher requirements of modern fire rescue for multi-hazard applicability and personal protection. Summary of the Invention

[0006] This invention provides an integrated backpack breathing foam fire extinguishing device applicable to multiple disasters, which solves the problems of limited functionality and low integration, rigid fire extinguishing modes and insufficient adaptability, contradiction between mobility and sustainable combat capability, slow combat readiness efficiency and response speed, and safety and reliability issues of existing fire extinguishing equipment when dealing with multiple types of fires and complex rescue scenarios.

[0007] The solution to the above-mentioned technical problems of the present invention is as follows: A multi-hazard applicable integrated backpack breathing foam fire extinguishing device, comprising a backpack assembly, a liquid tank assembly, a multi-functional spray gun, a supply valve, and a breathing mask. The liquid tank assembly is detachably connected to the backpack assembly. The multi-functional spray gun is connected to the liquid tank assembly via a hose. The backpack assembly includes a backpack body, a high-pressure compressed air cylinder, and a pressure reducing valve. The high-pressure compressed air cylinder is detachably installed on the backpack body. The pressure reducing valve is located on the high-pressure compressed air cylinder. The high-pressure compressed air cylinder supplies compressed air to the liquid tank assembly, the multi-functional spray gun, the supply valve, and the breathing mask.

[0008] The usage method includes the following steps:

[0009] S1, Extinguishing agent filling procedure: Open the top cover of the material tank and fill the material tank with extinguishing medium;

[0010] S2, System preparation steps: Connect and fix the filled liquid storage tank assembly to the back frame assembly through the quick-release interface;

[0011] S3, Wearing and Start-up Procedure: The operator carries the equipment and wears a breathing mask, opens the cylinder valve, and the system starts.

[0012] S4, Firefighting Operation Procedure: The operator holds the spray gun, pulls the trigger to extinguish the fire, and selects between spraying a straight jet or a fine water mist jet by operating the mode conversion ring on the spray gun according to the type of fire.

[0013] S5. After the operation is completed, first close the gas cylinder valve, and then pull the spray gun trigger to release the residual pressure in the pipeline.

[0014] Based on the above technical solution, the present invention can be further improved as follows.

[0015] Furthermore, the back frame body is equipped with a waist belt and a back strap, and the high-pressure compressed air cylinder is a carbon fiber composite cylinder with a rated working pressure of 30MPa and a volume of 6.8L. The waist belt and back strap on the back frame body ensure that the equipment can be carried comfortably and stably on the human body, realizing human mobility. The use of carbon fiber composite cylinders greatly reduces the overall weight of the equipment, while ensuring the safety of storing high-pressure air.

[0016] Furthermore, the liquid storage tank assembly includes a material tank and an integrated pneumatic pump. The inlet of the pneumatic pump is connected to the inside of the material tank and is used to extract the extinguishing medium under the drive of compressed air. This design eliminates the need for external motors or engines and relies entirely on the same compressed air cylinder for power, resulting in a highly integrated, compact, and reliable system that avoids potential ignition sources such as electric sparks and has intrinsically safe characteristics.

[0017] Furthermore, the extinguishing agent container has a volume of 18L, and its central position is designed with a concave structure to accommodate the high-pressure compressed air cylinder. The extinguishing medium filled in the device is one or a mixture of water, water-based extinguishing agent, Class A foam extinguishing agent, and Class B foam extinguishing agent. The concave structure in the center of the container is designed to match the outer contour of the cylindrical cylinder. The 18L capacity allows for a significantly larger extinguishing agent reserve than traditional portable fire extinguishers, providing continuous operational capability. The concave structure design optimizes space, allowing the cylinder to be tightly embedded in the container, reducing the overall size of the device, lowering the center of gravity, and thus improving stability and comfort when carrying it.

[0018] Furthermore, the liquid storage tank assembly and the back frame assembly are connected via a quick-release interface. This quick-release interface includes a self-sealing pneumatic connector for connecting the gas path and a mechanical clip for securing the equipment. The self-sealing connector ensures no gas leakage during disassembly and connection, making operation safe and environmentally friendly. The mechanical clip provides quick and secure locking, allowing for tool-free assembly and disassembly. This design significantly improves the equipment's deployment speed and refill efficiency, which is crucial in the fast-paced environment of a fire, and also facilitates routine maintenance and upkeep.

[0019] Furthermore, the multi-functional spray gun integrates a foam generator, a fine water mist conversion mechanism, and a fire extinguishing medium flow channel. The fine water mist conversion mechanism allows the spray gun's output to switch between a direct current jet and a fine water mist jet. This mechanism is an adjustable nozzle located at the spray gun head. By rotating or adjusting the nozzle sleeve, the flow channel structure is changed, thus achieving the switch between direct current and atomization. Integrating the foam generator and the fine water mist conversion mechanism into a single gun enables multiple functions. Operators can seamlessly and quickly switch between two fire extinguishing modes—covering and suffocating (foam / direct current) and cooling and explosion suppression (fine water mist)—according to rapidly changing fire conditions without changing equipment. This greatly enhances the flexibility of fire extinguishing tactics and the overall effectiveness in dealing with complex fire scenes.

[0020] Furthermore, the back frame assembly can be replaced with a mobile trolley support, which detachably supports the back frame assembly and the liquid storage tank assembly mounted thereon, allowing it to switch between carrying mode and mobile towing mode. The mobile trolley support includes a frame, wheels, and straps or clamps for securing the back frame assembly. In narrow spaces or when climbing is required, the carrying mode can be used to ensure flexibility; in long, flat areas, switching to towing mode can greatly save operator energy, reduce fatigue, extend effective working time, and expand the applicable scenarios of the equipment.

[0021] Furthermore, the pressure reducing valve reduces the pressure of the high-pressure air in the high-pressure compressed air cylinder and divides it into three paths. The first path enters the pneumatic pump of the liquid storage tank assembly, causing the blades inside the pneumatic pump to rotate and extract the extinguishing medium from the material tank. The second path provides pressurized gas to the extinguishing medium flow channel of the multi-functional spray gun. The third path leads to the supply valve and breathing mask. One path is used to drive the pump, one path is used to mix the pressurized extinguishing agent, and one path is used for breathing. The three paths are from the same source and work together.

[0022] Furthermore, in step S1, the step of filling the extinguishing medium is as follows: inject clean water into the material tank until it is almost full, add foam concentrate into the material tank according to the required fire type, continue to add clean water to the rated volume, and tighten the top cover. This can prevent the foam concentrate from foaming too early in the material tank, prevent the problem of insufficient effective filling due to foam volume expansion, and ensure the accurate ratio of foam mixture, thereby ensuring that the best quality and quantity of foam can be generated during fire extinguishing and improving fire extinguishing efficiency.

[0023] Furthermore, in step S4, for Class A solid deep-seated fires or Class B liquid fires, foam jets or direct current jets are selected for covering and suffocating fires. For fires requiring rapid cooling, smoke suppression, electrical equipment, or batteries, fine water mist jets are selected for cooling and inerting. Foam / direct current jets are used to deal with conventional solid and liquid fires, while fine water mist with extremely high heat absorption efficiency is used to deal with easily reignited and explosive battery and electrical fires, thus maximizing fire extinguishing efficiency and making fire extinguishing methods more precise.

[0024] The beneficial effects of this invention are as follows: This invention provides an integrated backpack breathing foam fire extinguishing device applicable to multiple disasters, which has the following advantages:

[0025] 1. Highly integrated and versatile, it creatively combines three core functions: air breathing protection, compressed air foam fire extinguishing, and fine water mist fire extinguishing into one device. One set of equipment can replace the traditional combination of "air breathing apparatus + foam fire extinguishing device", which greatly simplifies equipment configuration and reduces the physical burden and psychological pressure on operators.

[0026] 2. The fire extinguishing mode is highly efficient and flexible. The multi-functional spray gun is one of the core advantages of this invention. The operator can make decisions based on the fire situation in an instant. The foam / direct current mode can be used to extinguish Class A and B fires to achieve coverage and suffocation. The fine water mist mode can be used to deal with electrical fires, lithium battery fires and occasions that require rapid cooling and smoke suppression. It has high heat absorption efficiency and low water loss. This "one gun for two uses" flexibility greatly improves the comprehensive fire fighting efficiency in complex and ever-changing fire scenes.

[0027] 3. High mobility and wide application: The dual-mode mobility design (back-carrying + mobile) is another major advantage. The back-carrying mode is suitable for narrow spaces and complex terrains; the mobile towing mode is suitable for long distances on flat roads. It can effectively save the operator's physical strength, extend the working time, and expand the application scenarios of the equipment, making it suitable for various environments such as warehouses, factories, tunnels, and parking lots.

[0028] 4. Rapid response and efficient combat readiness: The quick-release interface design allows the replacement of the storage tank and the assembly of the equipment to be completed within tens of seconds. Combined with a scientific fire extinguishing agent filling process, it greatly shortens the combat readiness preparation time and ensures continuous supply and rapid response capability at the fire scene.

[0029] 5. Safe and reliable, inherently safe. The entire system is powered by compressed air and has no electrical components, which fundamentally eliminates the risk of electric sparks igniting explosive gases. This makes it particularly suitable for hazardous environments with explosion-proof requirements, such as petroleum, chemical, and mining industries. The system has a compact structure, few failure points, and reliable operation.

[0030] 6. Humanized design and convenient operation: The ergonomic back frame design (waist belt, shoulder strap) and low center of gravity layout (concave structure of material barrel embedded in gas cylinder) make carrying comfortable and stable. The operation steps are logically clear, and the mode switching is intuitive and simple (rotating nozzle), which reduces the threshold of use and facilitates quick training and mastery.

[0031] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it according to the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Specific embodiments of the present invention are given in detail below with reference to the accompanying drawings. Attached Figure Description

[0032] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0033] Figure 1 A three-dimensional rendering of a multi-hazard applicable integrated backpack breathing foam fire extinguishing device provided in an embodiment of the present invention;

[0034] Figure 2 This is a system architecture diagram of a multi-hazard applicable integrated backpack air-breathing foam fire extinguishing device provided in an embodiment of the present invention.

[0035] The following is a list of components represented by each label in the attached diagram:

[0036] 1. Backrest assembly; 101. Backrest body; 102. High-pressure compressed air cylinder; 103. Pressure reducing valve; 2. Liquid storage tank assembly; 3. Multi-functional spray gun; 4. Supply valve; 5. Breathing mask. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-2 The principles and features of the present invention are described below. The examples given are for illustrative purposes only and are not intended to limit the scope of the invention. The invention is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the invention.

[0038] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0040] like Figure 1-2 As shown, the present invention provides an integrated backpack breathing foam fire extinguishing device applicable to multiple disasters, including a backpack assembly 1, a liquid storage tank assembly 2, a multi-functional spray gun 3, a supply valve 4, and a breathing mask 5. The liquid storage tank assembly 1 is detachably connected to the backpack assembly 2. The multi-functional spray gun 3 is connected to the liquid storage tank assembly 2 through a hose. The backpack assembly 1 includes a backpack body 101, a high-pressure compressed air cylinder 102, and a pressure reducing valve 103. The high-pressure compressed air cylinder 102 is detachably installed on the backpack body 101. The pressure reducing valve 103 is located on the high-pressure compressed air cylinder 102. The high-pressure compressed air cylinder 102 supplies compressed air to the liquid storage tank assembly 2, the multi-functional spray gun 3, the supply valve 4, and the breathing mask 5.

[0041] Preferably, the back frame body 101 is equipped with a waist belt and a back strap, and the high-pressure compressed air cylinder 102 is a carbon fiber composite cylinder with a rated working pressure of 30MPa and a volume of 6.8L. The waist belt and back strap on the back frame body ensure that the equipment can be carried comfortably and stably on the human body, realizing human mobility. The use of carbon fiber composite cylinders greatly reduces the overall weight of the equipment, while ensuring the safety of storing high-pressure air.

[0042] Preferably, the liquid storage tank assembly 2 includes a material tank and an integrated pneumatic pump. The inlet of the pneumatic pump is connected to the inside of the material tank and is used to extract the extinguishing medium under the drive of compressed air. This design eliminates the need for an external motor or engine and relies entirely on the same compressed air cylinder for power. This makes the system highly integrated, compact, and highly reliable, and avoids potential ignition sources such as electric sparks, thus possessing intrinsic safety characteristics.

[0043] Preferably, the extinguishing agent container has a volume of 18L, and the center of the container is designed with a concave structure to fit the high-pressure compressed air cylinder 102. The extinguishing medium filled in the device is one or a mixture of water, water-based extinguishing agent, Class A foam extinguishing agent, and Class B foam extinguishing agent. The concave structure in the center of the container is designed to match the outer contour of the cylindrical cylinder. The 18L capacity allows for a much larger extinguishing agent reserve than traditional portable fire extinguishers, providing continuous operational capability. The concave structure design optimizes space, allowing the cylinder to be tightly embedded in the container, reducing the overall size of the device, lowering the center of gravity, and thus improving stability and comfort when carrying it.

[0044] Preferably, the liquid storage tank assembly 2 and the back frame assembly 1 are connected via a quick-release interface. This quick-release interface includes a self-sealing pneumatic connector for connecting the gas path and a mechanical clip for securing the equipment. The self-sealing connector ensures no gas leakage during disassembly and connection, making operation safe and environmentally friendly. The mechanical clip enables quick and secure locking, allowing for tool-free assembly and disassembly. This design significantly improves the deployment speed and refill efficiency of the equipment, which is crucial in the fast-paced environment of a fire, and also facilitates routine maintenance and upkeep.

[0045] Preferably, the multi-functional spray gun 3 integrates a foam generator, a fine water mist conversion mechanism, and an extinguishing medium flow channel. The fine water mist conversion mechanism allows the spray gun's output to switch between a direct current jet and a fine water mist jet. The fine water mist conversion mechanism is an adjustable nozzle located at the spray gun head. By rotating or adjusting the nozzle sleeve, the flow channel structure is changed, thereby achieving the switch between direct current and atomization. Integrating the foam generator and the fine water mist conversion mechanism into one gun achieves multiple functions in one gun. Operators can seamlessly and quickly switch between two extinguishing modes—covering and suffocating (foam / direct current) and cooling and explosion suppression (fine water mist)—according to the rapidly changing needs of the fire situation without changing equipment. This greatly improves the flexibility of firefighting tactics and the overall effectiveness in dealing with complex fire scenes.

[0046] Preferably, the back frame assembly 1 can be replaced with a mobile trolley support. The mobile trolley support detachably carries the back frame assembly and the liquid storage tank assembly mounted on it, allowing it to switch between carrying mode and mobile towing mode. The mobile trolley support includes a frame, wheels, and straps or clamps for securing the back frame assembly. In narrow spaces or when climbing is required, the carrying mode can be used to ensure flexibility; in long, flat areas, switching to towing mode can greatly save operator physical strength, reduce fatigue, extend effective working time, and expand the applicable scenarios of the equipment.

[0047] Preferably, the pressure reducing valve 103 reduces the pressure of the high-pressure air in the high-pressure compressed air cylinder 102 and divides it into three paths. The first path enters the pneumatic pump of the liquid storage tank assembly 2, causing the blades inside the pneumatic pump to rotate and extract the extinguishing medium from the material tank. The second path provides pressurized gas to the extinguishing medium flow channel of the multi-functional spray gun 3. The third path leads to the supply valve 4 and the breathing mask 5. One path is used to drive the pump, one path is used to mix the pressurized extinguishing agent, and one path is used for breathing. The three paths are from the same source and work together.

[0048] The specific working principle and usage method of this invention are as follows:

[0049] S1, Preparation and filling before use;

[0050] Fire extinguishing agent filling: Unscrew the filling port cap on the top of the storage tank assembly 2, and pour clean water into the tank. If it is necessary to extinguish Class B fires or fires that require foam coverage, after pouring clean water to about 80% of the rated volume, add Class A or Class B foam concentrate to the tank according to the ratio specified by the fire extinguishing agent manufacturer. Finally, continue to pour clean water to the full capacity to avoid premature foam generation. After completion, tighten the filling port cap to ensure a seal.

[0051] Compressed air cylinder preparation: Check the pressure gauge of high-pressure compressed air cylinder 102 to confirm that its pressure value is at the rated working pressure. If the pressure is insufficient, a special air filling device (such as a filling pump) is required to fill the cylinder through the cylinder valve interface until the rated working pressure is reached. When filling, it is necessary to ensure that the cylinder is properly secured.

[0052] System integration and quick-release assembly: Align and connect the liquid storage tank assembly 2, which is filled with extinguishing agent, with the corresponding interface of the back frame assembly 1 through the quick-release interface on it. The quick-release interface includes mechanical buckles and self-sealing pneumatic connectors. When connected, it will automatically lock and connect the air passage. After hearing a "click" sound and confirming that the connection is firm, the assembly is complete.

[0053] S2, Wearing and Activation;

[0054] Personnel wearing: The operator carries the integrated equipment on their back, fastens the shoulder straps and waist belt respectively, adjusts it to a comfortable and close fit to distribute the weight, takes out the breathing mask 5 and puts it on, ensuring that the mask seals well with the face, and connects the supply valve 4 to the breathing mask 5.

[0055] System startup and self-test: Slowly open the valve on the head of the high-pressure compressed air cylinder 102. You will hear the sound of airflow. The pressure reducing valve 103 will start working to reduce the pressure of the high-pressure air. Observe the pressure gauge reading to confirm that the air source pressure is normal. At the same time, listen carefully to whether the residual pressure alarm sounds briefly (self-test). This is a sign that the alarm is normal. The system pipelines and liquid circuits will start to pressurize.

[0056] S3, Firefighting Operation and Mode Control;

[0057] Firefighting operation and mode selection: The operator holds the multi-functional spray gun 3, rushes to the fire scene, presses the spray gun trigger, and the fire extinguishing medium (clean water or mixed liquid) is sprayed out under the drive of compressed air;

[0058] For Class A deep-seated fires and Class B liquid fires: keep the spray gun in its default state. The sprayed extinguishing medium is mixed and stirred with the second-path compressed air in the foam generator (Venturi tube structure) inside the spray gun to generate uniform and fine foam for covering and extinguishing the fire.

[0059] For applications requiring rapid cooling, smoke suppression, extinguishing fires involving electrical equipment (Class E), or cooling of battery packs: Rotate or toggle the mode switching ring on the nozzle head with your finger. This action alters the internal structure of the nozzle (e.g., driving a vortex generator) to switch the jet mode from "direct current" to "fine water mist." The fine water mist mode increases the surface area of ​​the water, resulting in extremely high heat absorption efficiency and effectively reducing water damage.

[0060] For fire points requiring long-range spray or penetrating attacks: switch the mode switching ring back to its original position and switch back to "DC" mode to obtain the longest range (≥10m) and the greatest impact force.

[0061] Mobile mode switching: If a long distance needs to be transferred during firefighting or the operator is fatigued, the entire equipment can be quickly unloaded from the back and placed on a mobile trolley support. The equipment frame can be firmly fixed to the trolley support frame using straps and clamps. The operator can then tow the equipment and continue to move forward using the wheels, which greatly saves physical strength.

[0062] S4, Post-operation processing and maintenance;

[0063] System shutdown and depressurization: After the fire extinguishing operation is completed, first close the cylinder head valve of the high-pressure compressed air cylinder 102, and then continuously pull the trigger of the spray gun until no medium is sprayed out of the spray gun and the residual gas in the pipeline is completely emptied (the pressure gauge reading returns to zero). This measure can prevent pressure from remaining inside the equipment and ensure transportation and storage safety.

[0064] Disassembly and maintenance: Press the release button of the quick-release interface to separate the liquid storage tank assembly 2 from the back frame assembly 1, clean the material bucket, check whether the pipe joints and seals are intact, and send the high-pressure compressed air cylinder 102 and pressure reducing valve 103 to a qualified institution for inspection regularly in accordance with relevant safety regulations. Check vulnerable parts such as the spray gun diaphragm and replace them in time if they are damaged.

[0065] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Content not described in detail in this specification is prior art known to those skilled in the art.

[0066] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Those skilled in the art can readily implement the present invention based on the accompanying drawings and the above description. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the present invention, utilizing the disclosed technical content, are equivalent embodiments of the present invention. Furthermore, any modifications, alterations, or variations made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the present invention.

Claims

1. A multi-hazard integrated backpack air breathing foam extinguishing apparatus comprising a back frame assembly (1), a liquid storage tank assembly (2), a multi-functional lance (3), a supply valve (4) and a breathing mask (5), characterized in that, The liquid tank assembly (1) is detachably connected to the back frame assembly (2), the multifunctional spray gun (3) is communicated with the liquid tank assembly (2) through a hose, the back frame assembly (1) comprises a back frame body (101), a high-pressure compressed air cylinder (102) and a pressure reducing valve (103), the high-pressure compressed air cylinder (102) is detachably installed on the back frame body (101), the pressure reducing valve (103) is arranged on the high-pressure compressed air cylinder (102), and the high-pressure compressed air cylinder (102) supplies compressed air to the liquid tank assembly (2), the multifunctional spray gun (3), a supply valve (4) and a breathing mask (5); The use method comprises the following steps: S1, a fire extinguishing agent filling step, opening the top cover of the bucket, and filling the fire extinguishing medium into the bucket; S2, a system preparation step, connecting and fixing the filled liquid tank assembly to the back frame assembly through a quick release interface; S3, a wearing and starting step, the operator wears the breathing mask and starts the system by operating the cylinder valve; S4, a fire extinguishing operation step, the operator holds the spray gun, pulls the trigger to extinguish the fire, and selects the jet straight flow or the water mist jet flow by operating the mode conversion ring on the spray gun according to the type of the fire; S5, after the operation is completed, first, the cylinder valve is closed, and then the spray gun trigger is pulled to release the residual pressure in the pipeline.

2. The multi-hazard integrated backpack air breathing foam extinguishing apparatus of claim 1, wherein, The back frame body (101) is provided with a waistband and a shoulder strap, the high-pressure compressed air cylinder (102) is a carbon fiber composite cylinder, the rated working pressure is 30 MPa, and the volume is 6.8 L.

3. The multi-hazard, integrated, backpack air breathing foam fighting apparatus of claim 1, wherein, The liquid tank assembly (2) comprises a bucket and an integrated pneumatic pump, the inlet of the pneumatic pump is communicated with the inside of the bucket, and the pneumatic pump is used for pumping the fire extinguishing medium under the drive of compressed air.

4. The multi-hazard, integrated, backpack air breathing foam fire extinguishing apparatus of claim 3, wherein, The volume of the bucket is 18 L, the middle position of the bucket is provided with a concave structure matched with the high-pressure compressed air cylinder (102), and the fire extinguishing medium filled in the equipment is one of water, a water-based fire extinguishing agent, a class A foam fire extinguishing agent and a class B foam fire extinguishing agent or a mixture thereof.

5. The multi-hazard, integrated, back-mounted, air breathing, foam firefighting apparatus of claim 1, wherein, The liquid tank assembly (2) is connected to the back frame assembly (1) through a quick release interface, the quick release interface comprises a self-sealing pneumatic joint for communicating the air path and a mechanical buckle for fixing.

6. The multi-hazard, integrated, backpack air breathing foam fire extinguishing apparatus of claim 1, wherein, The multifunctional spray gun (3) is internally integrated with a foam generator, a water mist conversion mechanism and a fire extinguishing medium flow channel, the water mist conversion mechanism switches the output of the spray gun between the jet straight flow and the water mist jet flow, and the water mist conversion mechanism is an adjustable nozzle arranged at the head of the spray gun, the nozzle sleeve is rotated or pulled to change the flow channel structure, so that the switching between the jet straight flow and the atomization is realized.

7. The multi-hazard, integrated, backpack air breathing foam fire extinguishing apparatus of claim 1 wherein, The back frame assembly (1) can be replaced by a mobile trolley support, the mobile trolley support detachably bears the back frame assembly and the liquid tank assembly installed thereon, so that the mobile trolley support can be converted between a carrying mode and a mobile dragging mode, and the mobile trolley support comprises a frame, wheels and a binding belt or a clamp for fixing the back frame assembly.

8. The multi-hazard, integrated, backpack air breathing foam fire extinguishing apparatus of claim 1 wherein, The pressure reducing valve (103) divides the high pressure air in the high pressure compressed air cylinder (102) into three paths, the first path enters the pneumatic pump of the liquid storage tank assembly (2) to make the blade in the pneumatic pump rotate and draw out the fire extinguishing medium in the barrel, the second path provides pressurized gas for the fire extinguishing medium flow channel of the multifunctional spray gun (3), and the third path leads to the supply valve (4) and the breathing mask (5).

9. The multi-hazard, integrated, backpack air breathing foam fire extinguishing apparatus of claim 1 wherein, In step S1, the filling of fire extinguishing medium is as follows: inject clean water into the barrel until almost full, add foam concentrate to the barrel according to the type of fire to be extinguished, continue to inject clean water until the rated volume, and tighten the top cover.

10. The multi-hazard integrated backpack air breathing foam extinguishing apparatus according to claim 1, wherein, In step S4, for A class solid material deep position fire or B class liquid fire, foam jet or straight flow jet is selected to cover and suffocate the fire, and for fire that needs rapid cooling, smoke suppression, electrical equipment or battery fire, fine water mist jet is selected for cooling and inerting.

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