Durable anti-falling fire extinguisher

Abstract

The invention relates to the technical field of fire fighting, and provides a durable anti-falling fire extinguisher. The fire extinguisher comprises an aerogel tank body, a spraying channel, a pressing nozzle and a durable anti-falling assembly. The durable anti-falling assembly comprises a rotating rod extending into the tank body, a stirring piece and a driving conversion mechanism for converting external impact into power of the rotating rod. Impact energy such as vibration and falling borne by the fire extinguisher in use and transportation is ingeniously converted into power for driving an internal stirring part to rotate through a mechanical structure, so that an aerogel fire extinguishing agent is continuously stirred, deposition failure of key components is prevented, and the storage life of the fire extinguishing agent is remarkably prolonged to more than 10 years. Meanwhile, impact energy is consumed in the energy conversion process, and the buffering and falling preventing performance is enhanced. Preferably, a self-adaptive buffer assembly based on magnetorheological fluid can be further arranged to cope with extreme impact. According to the invention, the unification of fire extinguishing efficiency persistence and physical durability is realized, and the method is particularly suitable for vehicle-mounted and other scenes with mobile and high-reliability requirements.

Description

Technical Field

[0001] This application relates to the field of fire protection technology, specifically to a durable, drop-resistant fire extinguisher. Background Technology

[0002] Fire safety, as an indispensable cornerstone of public and production safety, has always been closely linked to the evolution of its technology and equipment in materials science, mechanical engineering, and the deepening of human understanding of disasters. Fire extinguishers, the most widespread and initial fire-fighting tool, reflect, to some extent, the evolution of humanity's ability to combat fire. Among traditional fire extinguishers, foam extinguishers primarily extinguish Class A (solid materials) and Class B (flammable liquid) fires by spraying foam to cover the surface of the burning material, utilizing a dual mechanism of oxygen isolation (suffocation) and cooling, and are particularly effective in oil fires. Dry powder fire extinguishers, on the other hand, effectively interrupt the chain reaction of combustion in flames with their core extinguishing components (such as ammonium phosphate or sodium bicarbonate), characterized by rapid extinguishing speed and wide applicability, covering Class A, B, and C (flammable gases) and Class E (electrical equipment) fires. Carbon dioxide fire extinguishers: These extinguish fires rapidly without leaving residue by absorbing a large amount of heat and diluting oxygen after the liquid CO2 vaporizes. They are particularly suitable for Class C and Class E fires in places such as precision instruments, electronic data rooms, and archives. Water-based fire extinguishers: Newer generations of water-based fire extinguishers often contain flame-retardant, wetting, and film-forming components. They not only cool the fire with water mist but also form a water film to isolate oxygen, providing resistance to reignition. They are suitable for Class A, B (non-water-soluble liquids), and Class E fires. Traditional fire extinguishers, in order to achieve their designed fire ratings, have large tanks and complex spray structures, making them prone to failure. Furthermore, their extinguishing media limits their extinguishing efficiency. Especially in vehicle-mounted applications, their large size and limited extinguishing performance restrict their ability to handle high-demand fires.

[0003] Aerogels, with their nanoscale porous network structure, possess extremely low density, extremely high specific surface area, and extremely low thermal conductivity. When successfully applied in the field of fire extinguishing agents, they achieve superior fire extinguishing effects and have excellent application and promotion potential. For example: More efficient heat insulation: effectively blocking heat radiation and conduction from flames to fuel and the surrounding environment. Physical coverage: Micro- and nano-scale particles can quickly cover the surface of burning materials, forming a dense insulating layer; the complete porous aerogel framework firmly covers the surface of burning materials, forming a physical barrier with heat insulation, oxygen isolation, and adsorption functions, which cannot be achieved by dry powder and conventional water-based agents, thus fundamentally inhibiting reignition. Catalytic inhibition: Some modified aerogels can also catalytically capture free radicals during combustion. This highly efficient mechanism means that the amount of aerogel fire extinguishing agent required to achieve the same fire extinguishing effect is far less than that of traditional fire extinguishing agents.

[0004] However, to maintain the stable suspension of nanoparticles (such as aerogels), dispersants are usually required. High-performance dispersants are expensive, increasing costs. Some dispersants can produce a large amount of stable foam, affecting the pumping and spraying of the extinguishing agent, and their oxygen-isolating effect during fire extinguishing is uncertain. They may even aid the combustion of certain oil fires. Dispersant molecules may compete with flame retardants for adsorption sites on the aerogel surface, hindering the uniform loading and effective release of flame retardants. Many dispersants are organic compounds, and excessive addition may reduce the overall flame retardancy of the extinguishing agent, or even decompose at high temperatures to produce flammable gases, which is not conducive to improving the anti-reignition performance. Adding dispersants and the inevitable sedimentation of nanoparticles (such as aerogels) during long-term storage can lead to excessive deposition of nanoparticles, such as at the bottom of cans or corners. This agglomeration and increased particle size enhances the adsorption capacity of suspended nanoparticles, further exacerbating the accumulation of nanoparticles (such as aerogels) at the bottom and corners, intensifying sedimentation. Excessive sedimentation at these locations makes it difficult for aerogel particles to function effectively during use, significantly reducing their performance. Consequently, aerogel fire extinguishing agents are more prone to failure during storage in fire extinguishers, hindering their lifespan and impacting their application. While adding more dispersants can somewhat compensate for this performance reduction, as mentioned above, a high proportion of dispersants is clearly not the optimal solution. Furthermore, the drop resistance of fire extinguishers in mobile devices (buses, trains, cars, engineering vehicles, etc.), especially in scenarios like car accidents and complex road conditions, is a highly beneficial improvement, but it contradicts requirements for miniaturization and lightweight design.

[0005] In summary, the high efficiency and long-term storage stability of aerogel fire extinguishing agents, especially water-based aerogel fire extinguishing agents, highly depend on the long-term, uniform, and stable dispersion of each component (especially nano-aerogels) within the system. Furthermore, it is necessary to reduce the addition of dispersants to improve the application of aerogel fire extinguishing agents. Any factor that causes particle sedimentation will affect aerogel fire extinguishing, degrading it into a common, inefficient mixture. The durability of fire extinguishers also faces higher requirements: it is not only the fundamental guarantee for the long-term stability and readily available use of the internal core fire extinguishing agent, but also for the impact resistance and robust structure of the outer shell. A truly durable and drop-resistant fire extinguisher must achieve breakthroughs in both physical protection and agent stability.

[0006] Current technology cannot perfectly meet this requirement, which makes it impossible for many fire extinguishers to simultaneously possess both a drop-proof design and a long-lasting effect.

[0007] Therefore, there is an urgent need for a fire extinguisher that can improve the long-term, uniform and stable dispersion of aerogel fire extinguishing agents in the system, reduce the amount of dispersant added, be more suitable for mobile and complex application scenarios, and have better anti-fall performance. Summary of the Invention

[0008] To overcome the shortcomings of existing technologies, this application provides a durable, drop-resistant fire extinguisher that can convert the force exerted during movement into improving the long-term, uniform, and stable dispersion of aerogel fire extinguishing agents in the system, making it more suitable for low dispersant additions; and has better drop resistance and other advantages.

[0009] The embodiments of this application are implemented as follows:

[0010] This application provides an example of a durable, drop-resistant fire extinguisher, comprising: Aerogel canister, used to contain aerogel fire extinguishing agent; The ejection channel is connected to the interior of the aerogel container; A press-type nozzle is located at the outlet end of the spray channel; and, Durable, drop-resistant components, including a rotating rod, a stirring element, and a drive conversion mechanism; The rotating rod extends at least partially into the aerogel container and is connected to the stirring element, which is used to agitate the bottom and / or sidewalls of the aerogel container. The drive conversion mechanism is connected to the rotating rod and is used to convert external impacts or vibrations acting on the fire extinguisher into rotational motion of the rotating rod. The drive conversion mechanism includes a self-restoring deformable body, a first movable plate, a first elastic element, a second movable plate, and a rotary drive element; The self-restoring deformable body is in contact with a movable pressure bar, which is used to sense external impacts; The self-restoring deformable body is connected to the first movable plate, and the first movable plate, the first elastic element, the second movable plate, and the rotation drive element are connected in sequence. The rotary drive component engages with the rotary rod.

[0011] Optionally, it also includes an adaptive buffer component; The adaptive buffer assembly includes a housing, a magnetorheological fluid filled within the housing, a piston plate, and a magnetic field generation and adjustment module; The piston plate is connected to a movable rod. The piston plate has holes through which the magnetorheological fluid flows. The movable rod is used to sense external impacts. The magnetic field generation and adjustment module is used to adjust the magnetic field strength acting on the magnetorheological fluid according to the impact force.

[0012] Optionally, the magnetic field generating and regulating module includes: Magnets are used to provide magnetic fields; A retractable magnetic shield is movably disposed around the magnet to shield or partially shield the magnetic field; The magnetizing rod, connected to the base shell for sensing external impacts, is used to drive the retractable magnetic shield to move when impacted, thereby reducing magnetic field shielding.

[0013] Optionally, the press nozzle includes a main nozzle and a plurality of auxiliary nozzles arranged around the main nozzle.

[0014] Optionally, it also includes a bottom shell fitted onto the bottom of the aerogel container, and the movable pressure rod is fixed to the bottom shell.

[0015] Optionally, an elastic seal is provided between the bottom shell and the side wall of the aerogel tank.

[0016] Optionally, it also includes a detachable lower housing, wherein a receiving cavity is formed within the detachable lower housing, and the drive conversion mechanism is housed within the receiving cavity.

[0017] Optionally, the stirring element includes a first stirring element connected to the rotating rod, and a second stirring element connected to the first stirring element and extending to the corner of the inner wall of the aerogel tank.

[0018] Optionally, the end of the rotary drive member is provided with spur teeth, and the rotating rod is provided with a circumferential gear, wherein the spur teeth mesh with the circumferential gear.

[0019] Optionally, in the aerogel fire extinguishing agent, the content of nano-aerogel powder is greater than or equal to 2wt%, and the content of stabilizing dispersant is less than or equal to 3wt%.

[0020] Beneficial effects include: Extending storage life and maintaining fire extinguishing efficiency: By setting up an internal stirring mechanism consisting of a rotating rod and a stirring element, the fire extinguishing agent inside the canister can be actively stirred when the fire extinguisher is subjected to vibration, impact or regular maintenance. This effectively prevents key components such as nano aerogel particles from depositing, agglomerating and failing at the bottom and side walls of the canister, thereby ensuring that the fire extinguishing agent can maintain a uniform dispersion and high fire extinguishing performance even after long-term storage (such as more than 10 years).

[0021] The unique drive conversion mechanism converts the energy from external mechanical impacts such as vehicle bumps, transport vibrations, and even accidental drops into mechanical energy that drives the internal agitator to rotate. This design enables self-cleaning using daily or accidental vibrations, avoiding the cost, energy consumption, and reliability issues associated with simply adding an electric agitator. Furthermore, by absorbing the impact energy itself, it provides additional passive cushioning for the tank, enhancing the overall structure's impact resistance and drop protection.

[0022] By adding an adaptive buffer component based on magnetorheological fluid, the damping characteristics can be rapidly (in milliseconds) changed when faced with severe impacts (such as car accidents or falls from heights), providing a variable buffering force that matches the impact intensity, greatly improving the fire extinguisher's survivability in extreme situations and protecting the internal tank structure from damage.

[0023] Because the internal mechanical agitation effectively solves the particle sedimentation problem, it reduces the reliance on high doses of chemically stabilized dispersants, allowing the use of lower concentrations of dispersants and higher concentrations of effective fire extinguishing components (such as nano-aerogels). This can improve fire extinguishing performance while potentially reducing raw material costs and potential environmental burdens.

[0024] Compact structure and easy maintenance: The anti-fall and stirring function components are integrated into the design and can be set into a detachable lower shell form, which facilitates production assembly, maintenance and repair or replacement of functional components. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of a durable, drop-resistant fire extinguisher provided in an embodiment of this application.

[0027] Figure 2 This is a partially enlarged structural diagram of a durable anti-fall component provided in an embodiment of this application. Detailed Implementation

[0028] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0030] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this specification means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. The term “and / or” as used herein includes all or any units and all combinations of one or more associated listed items.

[0031] Existing fire extinguishers cannot simultaneously possess both drop-resistant design and long-lasting performance. Therefore, this paper proposes a fire extinguisher that improves the long-term, uniform, and stable dispersion of aerogel extinguishing agents in the system, reduces the amount of dispersant required, is more suitable for mobile and complex application scenarios, and has enhanced drop-resistant performance.

[0032] The features and performance of this application will be further described in detail below with reference to embodiments: like Figure 1-2 As shown in the figure, this application provides a durable and drop-proof fire extinguisher, including an aerogel canister 1, a spray channel 2, a press-fit nozzle 3, and a durable and drop-proof component 4.

[0033] Aerogel canister 1 is used to contain aerogel extinguishing agent, such as a water-based aerogel extinguishing agent. The basic component is water as the main carrier, which rapidly cools down through vaporization and heat absorption. Aerogel powder is the key component, typically composed of nanoporous particles such as silica and metal oxides (e.g., alumina), which impart ultra-high adsorption, heat insulation, and self-foaming capabilities to the extinguishing agent, forming a dense insulating layer for highly efficient suffocation extinguishing. Flame retardants provide strong fire extinguishing and anti-reignition capabilities, commonly containing phosphorus and nitrogen compounds. These are added according to different fire types. Stabilizers and additives, such as hydrophilic colloidal stabilizers and ion buffers, are used to prevent aerogel particle deposition, ensuring uniformity and a long shelf life of the extinguishing agent. Optionally, the aerogel extinguishing agent can contain higher levels of nano-aerogel powder, such as above 2wt%, 3-10wt%, or 4-6wt%. Stabilizers can be lower, such as below 3wt%, below 2.1wt%, or below 1wt%. By using aerogel fire extinguishing agents with a higher content of nano-aerogel powder and a lower content of stabilizing dispersants, the fire extinguishing effect can be improved.

[0034] The aerogel canister 1, containing the aerogel extinguishing agent, is connected to the press-fit nozzle 3 via the spray channel 2. Pressing the nozzle 3 releases the aerogel extinguishing agent for fire suppression. The press-fit nozzle 3 is similar in structure to aerosol nozzles and is not specifically defined here. Due to the high efficiency of aerogel extinguishing agents, the aerogel canister 1 is relatively small, and the pressing force of its nozzle structure is relatively low, making it labor-saving and suitable for convenient use in vehicle-mounted and other similar scenarios.

[0035] In some specific embodiments, the press-fit nozzle 3 includes a main nozzle 31 and auxiliary nozzles 32. The main nozzle 31, located at the center, can be a circular hole (a circular hole ensures uniform spraying of the central extinguishing agent). Several auxiliary nozzles 32 surround the main nozzle 31, for example, three elliptical holes (elliptical holes increase the circumferential coverage area of ​​the sprayed extinguishing agent). The cooperation of the main nozzle 31 and auxiliary nozzles 32 increases the spray coverage area and improves the extinguishing effect. Simultaneously, the multi-channel spraying of the extinguishing agent further reduces the resistance at the nozzle outlet, achieving a superior labor-saving effect.

[0036] The durable anti-fall component 4 includes a rotating rod 5, a first stirring element 6, and a second stirring element 7. The rotating rod 5 passes through the bottom of the aerogel canister 1 and is connected to the first stirring element 6. The first stirring element 6 and the second stirring element 7 are connected. The rotation of the rotating rod 5 realizes the rotation of the first stirring element 6 and the second stirring element 7, thereby agitating the solution at the bottom and side walls of the aerogel canister 1. The second stirring element 7 can scrape off aerogel deposits at corner positions. Through agitation and scraping, the deposits of aerogel fire extinguishing agent, such as nano-aerogel particles, on the bottom and side walls are reduced, and these particles can re-enter the aerogel fire extinguishing agent, preventing agglomeration at the bottom. The high efficiency and long-term storage capability of aerogel fire extinguishing agents, especially water-based aerogel fire extinguishing agents, are highly dependent on the long-term, uniform, and stable dispersion of each component (especially nano-aerogel) in the system, and require reducing the addition of dispersants to improve the application of aerogel fire extinguishing agents. Any factor that causes particle sedimentation will affect aerogel fire extinguishing, degrading it into a common, inefficient mixture. Aerogel fire extinguishing agents prevent sediment agglomeration on the bottom and sidewalls. During long-term storage, the sediment at the bottom of the fire extinguisher self-cleans, reducing the possibility of adsorption of aerogel particles from the bottom, which could accelerate the failure of the fire extinguishing agent. This significantly extends the lifespan of the fire extinguishing agent, allowing for storage for 10 years or more, greatly reducing operating costs. Even if the cost of manufacturing the fire extinguisher increases slightly, it is negligible compared to the greatly extended lifespan. Therefore, a more suitable and durable aerogel fire extinguisher has been developed, which improves the long-term, uniform, and stable dispersion of the aerogel fire extinguishing agent in the system and reduces the amount of dispersant required.

[0037] The durable anti-fall component 4 also includes a movable pressure bar 8, a self-restoring deformable body 9, a first movable plate 10, a first elastic element 11, a second movable plate 12, a rotary drive 13, a detachable lower housing 17, and a receiving cavity 18; the movable pressure bar 8 is fixedly supported on the bottom shell 15. The bottom shell 15 is fitted onto the outer side of the bottom of the aerogel canister 1, with a gap. The bottom shell 15 and the side of the aerogel canister 1 are positioned by a sealing element 16. The sealing element 16 is elastic, has an interference fit with the bottom shell 15 and the side of the aerogel canister 1, and can provide a certain cushioning effect to improve the anti-fall performance. The self-restoring deformable body 9, the first movable plate 10, the first elastic element 11, the second movable plate 12, and the rotary drive 13 are housed in the receiving cavity 18. The movable pressure rod 8 passes through the detachable lower housing 17 and the receiving cavity 18, and then supports the self-restoring deformable body 9. The self-restoring deformable body 9 can be a hollow, deformable rubber ball, etc., which can restore its original shape after being compressed and deformed by force and when the force is removed. The self-restoring deformable body 9 is fixedly connected to the first moving plate 10. The first moving plate 10, the first elastic element 11, the second moving plate 12, and the rotary drive element 13 are connected in sequence. The rotary drive element 13 and the rotating rod 5 are engaged by gears. The engagement method can be that the end of the rotary drive element 13 is provided with straight teeth, which mesh with the gears arranged circumferentially on the rotating rod 5.

[0038] The above structure is used as follows: When the bottom shell 15 is subjected to drop, impact, or vehicle vibration, especially when there is a small vibration, the force on the bottom shell 15 is transmitted to the movable pressure rod 8. The movable pressure rod 8 compresses the self-restoring deformable body 9. After the self-restoring deformable body 9 deforms, it squeezes the first movable plate 10, the first elastic element 11, and the second movable plate 12, thereby driving the rotary drive 13 to move and drive the rotary rod 5 to rotate. This achieves the rotation of the first stirring element 6 and the second stirring element 7 when the bottom shell 15 is subjected to drop, impact, or vehicle vibration, especially when there is a small vibration, thus agitating the solution at the bottom and side walls of the aerogel tank 1, thereby providing spontaneous agitation of the liquid in the tank. When the force is removed, the self-restoring deformable body 9 returns to its original shape, driving the first movable plate 10, the first elastic element 11, and the second movable plate 12 to move in opposite directions, playing a secondary role in driving the rotary rod 5 and improving the stirring effect. Simultaneously, when the bottom shell 15 is subjected to drops, impacts, or vehicle vibrations, the elastic buffering and energy dissipation effects of the self-restoring deformable body 9, the first elastic element 11, and the driving rotating rod 5 also improve the tank's anti-drop buffering capability. Through the above structure, vehicle vibrations and impact forces are transformed, achieving self-cleaning of the bottom and side walls inside the tank, avoiding the possibility of nanoparticle aggregation and failure, and greatly improving the durability of the fire extinguisher. It is understood that the rotating rod 5 is sealed through a pressure-bearing seal when it passes through the tank; the specific sealing structure is not limited. Alternatively, a fixed connecting structure can be set at the bottom of the tank to connect with the internal stirring element, and the durable anti-drop component 4 can be detachably installed externally through a detachable mechanical connection. The elastic element in this application can be a spring, etc.

[0039] In some specific embodiments, the first elastic element 11 may also be a rigid inelastic rod used to transmit force, thereby reducing the corresponding force buffering effect.

[0040] In some specific embodiments, the durable anti-fall component 4 also includes an adaptive buffer component 19, which provides adaptive adjustable damping buffering capacity under extreme impact conditions such as fire extinguisher drops and car accidents, thereby improving the anti-fall capability and compensating for the insufficient anti-fall buffering capacity of the tank body when the bottom shell 15 is subjected to drops, impacts, or vehicle vibrations, through the elastic buffering and driving energy consumption of the self-recovering deformable body 9, the first elastic element 11, and the driving rotating rod 5.

[0041] The adaptive buffer 19 includes a magnetorheological fluid 19-1, a movable rod 19-2, a piston plate 19-3, a magnet 19-4, a magnetizing rod 19-5, a pressure plate 19-6, a shrinkable magnetic shield 19-7, and an elastic element 19-8. The magnetorheological fluid 19-1 is a novel fluid with controllable flowability. The viscosity of the magnetorheological fluid corresponds to the magnetic field strength; when there is no external magnetic field, the magnetorheological fluid exhibits low-viscosity Newtonian fluid characteristics; when an external magnetic field is applied, it exhibits high-viscosity, low-flowability Bingham fluid (approximately a solid); these changes are reversible, and this conversion has low energy consumption, is easy to control, and can achieve millisecond-level response, thus providing rapidly responsive variable damping and adaptive, variable buffering capability. One end of the magnetorheological fluid 19-1 and the movable rod 19-2 is fixed to the bottom shell 15; the other end of the movable rod 19-2 is connected to the piston plate 19-3, which has holes through which the magnetorheological fluid 19-1 can flow; the magnet 19-4 is used to provide a magnetic field for the magnetorheological fluid 19-1; the shrinkable magnetic shield 19-7 is used to shield all or part of the magnetic field when it is necessary to shield the magnetic field of the magnet 19-4, and to remove the shielding of the magnetic field of the magnet 19-4 when compressed; the magnetizing rod 19-5 is used to squeeze the shrinkable magnetic shield 19-7 through the pressure plate 19-6 to adjust the magnetic field shielding; the elastic element 19-8 is used to compress during squeezing, and to restore the shielding effect of the shrinkable magnetic shield 19-7 on the magnetic field when not squeezed.

[0042] The adaptive buffer assembly 19 is used as follows: Under extreme impact conditions such as a fire extinguisher falling or a car accident, the bottom shell 15 moves upward, causing the movable rod 19-2 to compress the piston plate 19-3. Magnetorheological fluid 19-1 flows through the central hole of the piston plate 19-3. The magnetorheological fluid 19-1 is affected by different magnetic field strengths, exhibiting different viscosity characteristics. This results in the piston plate 19-3 experiencing varying degrees of resistance, achieving adaptive damping adjustment and varying buffering capacity. Simultaneously, the bottom shell 15 moves the magnetizing rod 19-5, compressing the pressure plate 19-6 to shrink the magnetic shielding component 19-7, thus changing the shielding degree of the magnet 19-4 and adjusting the magnetic field shielding. This, in turn, causes the magnetorheological fluid 19-1 to be affected by different magnetic field strengths. The elastic element 19-8 is used to compress during compression and restore the magnetic shielding effect of the shrunken magnetic shielding component 19-7 when not compressed. It is known that the adaptive buffer assembly 19 can be installed in vulnerable parts such as the edge of the tank, and there can be several of them. A significant advantage of the adaptive buffer assembly 19 is that it does not utilize electromagnetic fields, thus avoiding the possibility of electromagnetic field failure during fire extinguisher application, but this does not preclude the use of magnetic fields. Although the above structure is used for miniaturized tanks in the example, it is understandable that the durable anti-fall assembly 4 would have greater application prospects and value in applications such as large vehicles, special vehicles, and off-road vehicles where space is not limited.

[0043] The above components are connected by limiting structures to prevent dislocation between them. These are not described in detail here, but can be set according to actual needs.

[0044] In summary, the embodiments of the present invention provide a durable and drop-resistant fire extinguisher that can convert the force exerted during movement into improving the long-term, uniform, and stable dispersion of the aerogel fire extinguishing agent in the system, making it more suitable for low dispersant addition amounts; and has better drop resistance and other advantages.

[0045] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0046] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0047] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. In the description of this specification, specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A durable, drop-resistant fire extinguisher, characterized by, The application relates to an aero-gel fire extinguisher, which comprises an aero-gel tank (1) for containing aero-gel fire extinguishing agent, an ejection channel (2) in communication with the inside of the aero-gel tank (1), a pressurized nozzle (3) arranged at the outlet end of the ejection channel (2), and a durable anti-falling assembly (4) comprising a rotating rod (5), a stirring member and a driving conversion mechanism. The rotating rod (5) is at least partially inserted into the inside of the aero-gel tank (1) and connected with the stirring member, which is used for stirring the bottom and / or side wall of the aero-gel tank (1). The driving conversion mechanism is connected with the rotating rod (5) and used for converting external impact or vibration acting on the fire extinguisher into rotating motion of the rotating rod (5). The driving conversion mechanism comprises a self-recovery deforming body (9), a first moving plate (10), a first elastic member (11), a second moving plate (12) and a rotating driving member (13). The self-recovery deforming body (9) is in contact with a movable pressing rod (8) used for sensing external impact. The self-recovery deforming body (9) is connected with the first moving plate (10), and the first moving plate (10), the first elastic member (11), the second moving plate (12) and the rotating driving member (13) are sequentially connected. The rotating driving member (13) is engaged with the rotating rod (5). The application further comprises an adaptive buffering assembly (19). The adaptive buffering assembly (19) comprises a shell, a magneto-rheological fluid (19-1) filled in the shell, a piston plate (19-3) and a magnetic field generating and adjusting module. The piston plate (19-3) is connected with a movable rod (19-2), and the piston plate (19-3) is provided with holes for the magneto-rheological fluid (19-1) to flow through. The magnetic field generating and adjusting module is used for adjusting the magnetic field intensity acting on the magneto-rheological fluid (19-1) according to the impact force.

2. The durable, fall-resistant fire extinguisher of claim 1, wherein, The magnetic field generating and adjusting module comprises a magnet (19-4) used for providing a magnetic field, a retractable magnetic shielding member (19-7) movably arranged around the magnet (19-4) and used for shielding or partially shielding the magnetic field, and a magnetic enhancement rod (19-5) connected with a bottom shell (15) used for sensing external impact and used for driving the retractable magnetic shielding member (19-7) to move to reduce the magnetic field shielding when impacted. The pressurized nozzle (3) comprises a main nozzle hole (31) and a plurality of auxiliary nozzle holes (32) arranged around the main nozzle hole (31). The application further comprises a bottom shell (15) sleeved on the bottom of the aero-gel tank (1), and the movable pressing rod (8) is fixed on the bottom shell (15). An elastic sealing member (16) is arranged between the bottom shell (15) and the side wall of the aero-gel tank (1).

3. The durable, fall-resistant fire extinguisher of claim 2, wherein, The application further comprises a detachable lower shell (17) with an accommodating cavity (18) formed in the detachable lower shell (17), and the driving conversion mechanism is accommodated in the accommodating cavity (18). ​ ​ ​ 4. The durable, fall-resistant fire extinguisher of claim 1, wherein, ​ 5. The durable, fall-resistant fire extinguisher of claim 1, wherein, ​ 6. The durable, fall-resistant fire extinguisher of claim 5, wherein, ​ 7. The durable, fall-resistant fire extinguisher of claim 1, wherein, ​ 8. The durable, fall-resistant fire extinguisher of claim 1, wherein, The stirring member comprises a first stirring member (6) connected with the rotating rod (5), and a second stirring member (7) connected with the first stirring member (6) and extending to the corner of the inner wall of the aerogel tank (1).

9. The durable, fall-resistant fire extinguisher of claim 1, wherein, The end of the rotating driving member (13) is provided with straight teeth, and the rotating rod (5) is provided with a circumferential gear, and the straight teeth are engaged with the circumferential gear.

10. The durable, fall-resistant fire extinguisher of claim 1, wherein, In the aerogel fire extinguishing agent, the content of nano-aerogel powder is greater than or equal to 2wt%, and the content of the stable dispersing agent is less than or equal to 3wt%.

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