Portable throw-type forest fire extinguisher

Abstract

The application relates to the technical field of fire extinguishing equipment, in particular to a portable throwing type forest fire extinguisher which comprises an outer shell body, a reaction material box and a water storage box are sequentially arranged in the outer shell body in the axial direction, and solid acid reactants and carbonate reactants are separately stored in the reaction material box. The solid reactants and water are separately arranged by adopting the split setting of the reaction material box and the water storage box, the reaction triggering condition is isolated, the fire extinguisher has excellent chemical stability in the storage state, the safety hidden danger that the reactants are prematurely disabled or accidentally reacted due to the change of the temperature and humidity of the storage environment is avoided, the setting of the plastic film seal layer which can be torn off effectively isolates the water vapor and prevents the solid reactants from being damp and deteriorated during storage, the storage life of the product is prolonged, the plastic film seal layer is automatically broken under the water liquid impact or the internal gas pressure during use, and the automatic switching from the sealed isolation to the open reaction is realized without external operation.

Description

Technical Field

[0001] This invention relates to the field of fire extinguishing equipment technology, and in particular to a portable throwable forest fire extinguisher. Background Technology

[0002] Forest fires are characterized by their suddenness, rapid spread, and difficulty in being extinguished. During the firefighting process, firefighters often face unfavorable conditions such as high mountains, steep slopes, and complex terrain, making it difficult for them to approach the fire source for on-site firefighting. Traditional portable fire extinguishers require close-range operation, which not only results in low firefighting efficiency but also poses a serious threat to the life, health, and safety of firefighters.

[0003] Currently, there are some throwable fire extinguisher products and related technologies on the market. Some throwable fire extinguishers use glass bottles to encapsulate acidic solutions and carbonate solutions. The two solutions mix and react to produce carbon dioxide and water to extinguish the fire when the glass bottle breaks. However, glass bottles are easily damaged during transportation and carrying, resulting in poor safety. The reactants are already in the same container separated by a partition before being thrown. After being thrown and landing, the reaction is triggered by the breaking of the bottle, and the timing of the triggering and the sufficiency of the reaction are difficult to guarantee. Other throwable fire extinguishers use dry powder extinguishing agents in conjunction with gas generators, or employ liquid carbon dioxide pressurization. However, these solutions are either structurally complex and costly, or require high-pressure containers and lack portability, making it difficult to meet the practical needs of forest fire fighting scenarios for lightweight, low-cost, and easy-to-operate extinguishers. Therefore, a portable throwable forest fire extinguisher is proposed. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a portable, throwable forest fire extinguisher.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A portable throwable forest fire extinguisher includes: an outer shell, inside which a reaction material box and a water storage box are arranged sequentially along the axial direction; the reaction material box contains solid acidic reactants and carbonate reactants separately, and its opening is sealed by a tearable plastic film sealing layer; the water storage box contains liquid water, and its opening is an open structure; the reaction material box and the water storage box are connected by threads to form a detachable sealed joint; in the storage state, the two are fixedly connected as one unit, and in the throwing and use state, the two can be separated relative to each other; The outer peripheral wall of the outer shell is provided with an integrally injection-molded anti-slip grip part located in the lower part of its middle section; A counterweight is provided at the bottom of the outer casing; The outer shell is provided with a throwing aid component at the end away from the anti-slip grip.

[0006] Preferably, the upper half of the outer shell has a plurality of injection holes distributed on its circumferential sidewall. Each injection hole is used to discharge the carbon dioxide gas and water mist generated by the reaction outward, and the axis of the injection hole is inclined downward relative to the radial plane of the outer shell.

[0007] Preferably, the outer surface of the anti-slip grip is provided with multiple arc-shaped recessed finger grooves, the radius of curvature of each finger groove is adapted to the curvature of the knuckle when the human finger is naturally bent, and each finger groove has a raised limiting ridge on its edge to prevent the fingers from sliding backward when throwing.

[0008] Preferably, the end of the anti-slip grip portion away from the throwing aid component is hinged with a flip-up anti-slip ring and a flexible wristband. The anti-slip ring is embedded in a corresponding storage groove on the surface of the outer shell, and an easy-break safety pin is provided at the hinge root of the anti-slip ring.

[0009] Preferably, the counterweight is a composite structure, comprising an outer rigid counterweight shell and an elastic energy-absorbing core filled inside the rigid counterweight shell.

[0010] Preferably, the rigid counterweight shell and the inner wall of the outer shell are connected by multiple elastic support columns arranged circumferentially, and the elastic support columns are made of rubber.

[0011] Preferably, the thread includes an external thread section disposed at the lower end of the reaction material box and an internal thread section disposed at the upper end of the water storage box, wherein the external thread section and the internal thread section are screwed together.

[0012] Preferably, the outer wall of the outer shell has several longitudinal storage slots evenly distributed along the circumference, and each longitudinal storage slot is hinged with an arc-shaped tail wing by a torsion spring hinge.

[0013] Preferably, the longitudinal storage groove is provided with a limiting claw. When the arc-shaped tail wing is unfolded to a preset angle, the limiting claw is embedded in the locking recess corresponding to the root of the arc-shaped tail wing to limit the arc-shaped tail wing from shaking or folding under the action of airflow.

[0014] Preferably, the shell wall thickness in the area where the anti-slip grip part is located is greater than the shell wall thickness in the rest of the shell body, and a closed annular heat-insulating cavity is formed inside the shell in this area.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. By adopting a separate design for the reaction material box and the water storage box, the solid reactants and the liquid are placed separately, isolating the reaction triggering conditions. This gives the fire extinguisher excellent chemical stability in the storage state, avoiding the safety hazards of premature failure or accidental reaction of reactants due to changes in temperature and humidity in the storage environment. The removable plastic film sealing layer effectively isolates moisture during storage, preventing solid reactants from getting damp and deteriorating, thus extending the product's shelf life. When in use, it will automatically break when subjected to water impact or internal air pressure, realizing automatic switching from sealed isolation to conducting reaction without external operation. 2. The threaded detachable sealing connection structure enables the reaction material box and water storage box to be fixed together during storage, ensuring that they do not move or loosen during handling and carrying. At the same time, the threaded connection can be disengaged and separated in a predetermined manner when thrown or impacted, ensuring reliable contact between the liquid and the reactants to complete the reaction triggering. 3. The anti-slip grip part is integrally injection molded and forms a non-removable whole structure with the outer shell, so that the finger groove matches the curvature of the human finger joint, improving grip comfort and fit, and reducing fatigue during long-term gripping; the limiting edge generates a reverse blocking effect at the moment of throwing force, preventing the fingers from slipping backward due to excessive force, ensuring the stability of the throwing action and sufficient force. During the throwing process, the fingers are inserted into the finger ring and wristband and put on the wrist, effectively preventing the fire extinguisher from accidentally flying out of the hand during the arm swing acceleration, avoiding accidental injury to others or loss of the fire extinguisher; 4. By setting a counterweight at the bottom of the outer shell, the rigid outer shell provides sufficient counterweight mass to stabilize the flight attitude. The inner elastic energy-absorbing core absorbs a large amount of impact kinetic energy when the fire extinguisher lands and impacts, buffers the vibration of the internal components, prevents the reaction material box and water storage box from separating or breaking prematurely due to unexpected impact, ensures stable flight attitude and accurate landing point, improves the throwing hit rate, and the counterweight is elastically suspended inside the outer shell to further attenuate the shock wave transmitted to the shell when landing and impacting, protect the outer shell and internal structural components from damage, and at the same time play a shock absorption protection role when dropped during daily handling. 5. By setting up throwing assistance components, multiple tail fins are evenly distributed circumferentially, generating symmetrical aerodynamic drag during flight, suppressing the fire extinguisher's tumbling and deflection in the air, making the flight trajectory straighter and more stable, and improving the landing accuracy of long-distance throwing. It automatically unfolds after being thrown, thereby improving the fire extinguisher's ability to cover fire points at a distance. Attached Figure Description

[0016] Figure 1 This is a front structural diagram of a portable throwable forest fire extinguisher proposed in this invention. Figure 2 This is a side view of a portable throwable forest fire extinguisher proposed in this invention. Figure 3This invention proposes a portable throwable forest fire extinguisher. Figure 2 A schematic diagram of the enlarged structure A in the diagram; Figure 4 This is a schematic diagram of the reaction material box and water storage box structure of a portable throwable forest fire extinguisher proposed in this invention; Figure 5 This invention proposes a portable throwable forest fire extinguisher. Figure 4 A schematic diagram of the enlarged B structure in the diagram; Figure 6 This is a schematic diagram of the anti-slip grip structure of a portable throwable forest fire extinguisher proposed in this invention; Figure 7 This invention proposes a portable throwable forest fire extinguisher. Figure 6 A schematic diagram of the C-scaled structure in the diagram; Figure 8 This is a schematic diagram of the plastic film sealing layer structure of a portable throwable forest fire extinguisher proposed in this invention.

[0017] In the diagram: 1. Outer shell; 11. Injection hole; 2. Reactant box; 3. Water storage box; 4. Threaded joint; 41. External threaded section; 42. Internal threaded section; 5. Plastic film sealing layer; 6. Anti-slip grip; 61. Finger groove; 62. Limiting edge; 63. Anti-detachment finger ring; 64. Flexible wristband; 65. Storage groove; 66. Fragile safety pin; 67. Annular heat insulation cavity; 7. Counterweight; 71. Rigid counterweight shell; 72. Elastic energy-absorbing core; 73. Elastic support column; 8. Throwing auxiliary component; 81. Longitudinal storage groove; 82. Torsion spring hinge; 83. Arc-shaped tail wing; 84. Limiting claw; 85. Locking recess. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] The terms used in this invention, such as "upper," "lower," "left," "right," "middle," and "one," are merely for clarity of description and are not intended to limit the scope of the invention. Any changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0020] Reference Figures 1-8A portable throwable forest fire extinguisher includes: an outer shell 1, inside which a reaction material box 2 and a water storage box 3 are arranged sequentially along the axial direction; the reaction material box 2 stores solid acidic reactants and carbonate reactants separately, and its opening is sealed by a tearable plastic film sealing layer 5; the water storage box 3 stores liquid water, and its opening is an open structure; the reaction material box 2 and the water storage box 3 are connected by a thread 4 to form a detachable sealed connection; in the storage state, the two are fixedly connected as one unit, and in the throwing and use state, the two can be separated relative to each other; The outer peripheral wall of the outer shell 1 is provided with an integrally injection-molded anti-slip grip part 6 at the lower part of its middle section; A counterweight 7 is provided at the bottom of the outer shell 1; A throwing aid component 8 is provided at the end of the outer shell 1 away from the anti-slip grip part 6; The upper half of the outer shell 1 has a plurality of injection holes 11 distributed on the circumferential sidewall. Each injection hole 11 is used to discharge the carbon dioxide gas and water mist generated by the reaction outward, and the axis of the injection hole 11 is inclined downward relative to the radial plane of the outer shell 1. The thread 4 includes an external thread section 41 located at the lower end of the reaction material box 2 and an internal thread section 42 located at the upper end of the water storage box 3. The external thread section 41 and the internal thread section 42 are screwed together.

[0021] In embodiments applying the above technical solution, in the non-use state, the fire extinguisher's outer shell 1 is an integral container, with a reaction material box 2 and a water storage box 3 arranged sequentially along the axial direction inside. The reaction material box 2 is divided into two independent chambers, storing solid acidic reactants and carbonate reactants respectively. The opening of the reaction material box 2 is sealed by a removable plastic film sealing layer 5. This plastic film sealing layer 5 serves a dual purpose in the storage state: firstly, to prevent the two solid reactants from becoming damp and deteriorating; and secondly, to prevent external water or moisture from entering the reaction material box 2 and causing premature reaction. The water storage box 3 stores water, and its opening is an open structure without a sealing cap. The reaction material box 2 and the water storage box 3 are connected by a detachable sealed joint through a thread 4. The thread 4 specifically includes an external thread section 41 located at the lower end of the reaction material box 2 and an internal thread section 42 located at the upper end of the water storage box 3. The two are tightly connected by thread engagement. This threaded connection structure fixes the reaction material box 2 and the water storage box 3 into one unit in the storage state. At the same time, the sealing is formed by the pressing action of the threaded mating surfaces to ensure that the liquid does not seep into the interior of the reaction material box 2. In the storage state, the solid acid reactant, the carbonate reactant and the liquid are isolated from each other and do not undergo any chemical reaction. The fire extinguisher can be stored stably for a long time. During flight or upon impact with the ground, the outer shell 1 of the fire extinguisher is subjected to impact load. Since the reaction chamber 2 and the water tank 3 are only fixed by a threaded connection 4, this threaded connection may disengage after a certain impact force. That is, the engagement between the external thread section 41 and the internal thread section 42 is disrupted, causing the reaction chamber 2 and the water tank 3 to separate. After separation, the water in the water tank 3 enters the reaction chamber 2 under inertia, coming into contact with the solid acidic and carbonate reactants. Simultaneously, the impact force from the throw tears off the plastic film sealing layer 5 at the opening of the reaction chamber 2, allowing the water to smoothly enter and fully mix with the reactants. The large amount of carbon dioxide gas generated by the reaction rapidly accumulates inside the sealed outer shell 1, causing a sharp increase in internal pressure. Under high pressure, the carbon dioxide gas... The body carries some unreacted water to form a gas-liquid two-phase flow, which is sprayed outward together. The upper half of the outer shell 1 has multiple spray holes 11 distributed on the circumferential sidewall. These spray holes 11 are the only channels for carbon dioxide gas and water mist to be discharged outward. When the pressure inside the shell reaches a certain threshold, the high-pressure gas carrying water mist is sprayed out 360° circumferentially from each spray hole 11, covering a large area of ​​the fire area around the fire extinguisher. The axis of the spray hole 11 is inclined downward relative to the radial plane of the outer shell 1, so that the carbon dioxide gas and water mist preferentially act on the flame and burning surface near the ground, rather than ineffectively dissipating into the air. The density of carbon dioxide gas is greater than that of air. After being sprayed downward at an angle, it diffuses along the ground and sinks, and can adhere to the burning surface for a longer time, forming an effective oxygen-isolation layer, preventing the extinguishing agent from dissipating upward, and maximizing the effect of limited reaction products on the fire source. The ejected carbon dioxide gas extinguishes fires in the following ways: Carbon dioxide does not support combustion and is denser than air. After being ejected, it adheres to the surface of the burning material, isolating it from the surrounding oxygen and causing the flames to extinguish due to lack of oxygen. The high-pressure carbon dioxide gas expands rapidly upon ejection, absorbing a large amount of heat. Simultaneously, the water mist it carries vaporizes on the flame surface, also carrying away heat and lowering the temperature at the fire scene. Finally, the ejection of carbon dioxide reduces the oxygen concentration in the local air at the fire scene, making it difficult to sustain the combustion reaction.

[0022] The preferred technical solution in this embodiment is: Reference Figure 6The outer surface of the anti-slip grip part 6 is provided with multiple arc-shaped recessed finger grooves 61. The radius of curvature of each finger groove 61 is adapted to the curvature of the knuckle when the human finger is naturally bent. Each finger groove 61 has a raised limiting ridge 62 on its edge to prevent the fingers from sliding backward when throwing. When the user needs to extinguish a fire, he holds the anti-slip grip part 6 located in the lower middle part of the outer shell 1 and throws the entire fire extinguisher forcefully towards the fire source. The outer surface of the anti-slip grip part 6 is provided with multiple arc-shaped recessed finger grooves 61. The radius of curvature of each finger groove 61 is adapted to the curvature of the knuckle when the human finger is naturally bent, so that the user can obtain a comfortable and stable grip when throwing. Each finger groove 61 has a raised limiting ridge 62 on its edge. At the moment of throwing, the limiting ridge 62 can prevent the fingers from sliding backward, ensuring that the user can exert enough force to throw the fire extinguisher to the target distance.

[0023] Reference Figure 7 The anti-slip grip part 6, at the end furthest from the throwing aid component 8, is hinged with a flip-up anti-drop ring 63 and a flexible wristband 64. The anti-drop ring 63 is embedded in a corresponding storage groove 65 on the surface of the outer shell 1, and a breakable safety pin 66 is provided at the hinge root of the anti-drop ring 63. The anti-drop ring 63 does not protrude from the surface of the shell when stored. When the user inserts his finger into the anti-drop ring 63 and throws the extinguisher, if the throwing force is too great and the finger is accidentally caught in the ring, preventing timely release of the extinguisher, the breakable safety pin 66 will break automatically when a preset tension is reached, causing the anti-drop ring 63 to detach from the outer shell 1, thus preventing the user from being dragged along by the extinguisher and causing danger. It should be noted that the anti-slip ring 63 and the flexible wristband 64 are respectively located on the two sides of the anti-slip grip part 6 along the axis, and there is a gap between the fixing point of the flexible wristband 64 and the directly below the hinge point of the ring. The two do not overlap when they are stored, and form a cross anti-entanglement limit when they are unfolded.

[0024] Reference Figure 2 The counterweight 7 is a composite structure, which includes an outer rigid counterweight shell 71 and an elastic energy-absorbing core 72 filled inside the rigid counterweight shell 71. The counterweight 7 is fixedly set at the bottom of the outer shell 1, so that the center of gravity of the entire fire extinguisher is biased to the bottom. According to the principle of rigid body flight mechanics, the projectile with the center of gravity in front has better directional stability during flight. The bottom counterweight makes the fire extinguisher always maintain a head-forward attitude during flight, reducing tumbling and deflection. Reference Figure 4The rigid counterweight shell 71 is connected to the inner wall of the outer shell 1 by multiple elastic support columns 73 arranged circumferentially. The elastic support columns 73 are made of rubber. The rigid counterweight shell 71 provides sufficient counterweight mass to ensure the center of gravity position, while the elastic energy-absorbing core 72 can absorb part of the impact energy when the fire extinguisher hits the ground, preventing the outer shell 1 from cracking or the internal structure from being damaged prematurely due to violent impact. The elastic support columns 73 are made of rubber. This structure further buffers the impact load during impact and protects the structural integrity of each component inside the shell during the throwing and landing process. It should be noted that under normal conditions, the stiffness of the elastic support column 73 is sufficient to maintain the static position of the counterweight 7 relative to the shell, and only generates a small amount of elastic displacement at the moment of impact to absorb the impact kinetic energy, ensuring that it will not be accidentally triggered during normal flight and transportation.

[0025] Reference Figure 2 The outer wall of the outer shell 1 has several longitudinal storage slots 81 evenly distributed along the circumference. Each longitudinal storage slot 81 is hinged with an arc-shaped tail fin 83 by a torsion spring hinge 82. In the stored state, each arc-shaped tail fin 83 is folded and stored in the longitudinal storage slot 81 without occupying extra space. When the fire extinguisher is thrown, the arc-shaped tail fin 83 automatically unfolds outward under the elastic force of the torsion spring hinge 82. The unfolded arc-shaped tail fin 83 is evenly distributed along the circumference of the outer shell 1, forming a stable aerodynamic layout similar to a tail fin.

[0026] Reference Figure 3 The longitudinal storage slot 81 is equipped with a limiting claw 84. When the arc-shaped tail fin 83 is deployed to a preset angle, the limiting claw 84 engages with the corresponding locking recess 85 at the root of the arc-shaped tail fin 83 to prevent the arc-shaped tail fin 83 from shaking or folding under the action of airflow. This ensures that the arc-shaped tail fin 83 will not shake or fold back when subjected to airflow during flight, and will always maintain a stable deployment angle. The deployed arc-shaped tail fin 83 produces the following aerodynamic effects: the arc-shaped tail fin 83 increases the aerodynamic drag at the rear of the aircraft, suppressing pitch and yaw oscillations during flight. The arc-shaped tail fin 83 keeps the fire extinguisher in a forward-facing attitude during flight, ensuring that the end where the throwing aid component 8 is located touches the ground first upon landing. This facilitates the separation of the internal structure, and the stable flight attitude makes the throwing trajectory more predictable, allowing the user to control the landing point more accurately.

[0027] Reference Figure 6The shell wall thickness in the area where the anti-slip grip part 6 is located is greater than the shell wall thickness in the rest of the outer shell 1, and a closed annular heat-insulating cavity 67 is formed inside the shell in this area. Since the chemical reaction is an exothermic reaction, the internal temperature of the outer shell 1 will rise during the reaction. The annular heat-insulating cavity 67 utilizes the principle of air insulation. Air is a poor conductor of heat. The static air layer in the closed cavity can effectively block heat from being transferred from the inner wall of the outer shell 1 to the outer wall, preventing the outer surface temperature of the anti-slip grip part 6 from being too high and burning the user's palm. At the same time, the thickened shell wall in this area also enhances the structural strength, ensuring that the grip part will not deform or break due to excessive force when the user throws and exerts force.

[0028] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A portable, throwable forest fire extinguisher, comprising: The outer shell (1) has a reaction material box (2) and a water storage box (3) arranged sequentially along the axial direction inside the outer shell (1). The reaction material box (2) is characterized in that it contains solid acidic reactants and carbonate reactants separately, and its opening is sealed by a tearable plastic film sealing layer (5). The water storage box (3) contains liquid water, and its opening is an open structure. The reaction material box (2) and the water storage box (3) are connected by a thread (4) to form a detachable sealed connection. In the storage state, the two are fixedly connected as one, and in the throwing and use state, the two can be separated relative to each other. The outer peripheral wall of the outer shell (1) is provided with an integrally injection-molded anti-slip grip part (6) located at the lower part of its middle section. A counterweight (7) is provided at the bottom of the outer shell (1); The outer shell (1) is provided with a throwing aid component (8) at the end away from the anti-slip grip (6).

2. A portable throwable forest fire extinguisher according to claim 1, characterized in that, The upper half of the outer shell (1) has a plurality of injection holes (11) distributed on the circumferential sidewall. Each injection hole (11) is used to discharge the carbon dioxide gas and water mist generated by the reaction to the outside, and the axis of the injection hole (11) is inclined downward relative to the radial plane of the outer shell (1).

3. A portable throwable forest fire extinguisher according to claim 1, characterized in that, The outer surface of the anti-slip grip (6) is provided with a plurality of arc-shaped recessed finger grooves (61). The radius of curvature of each finger groove (61) is adapted to the curvature of the finger joint when the human finger is naturally bent. Each finger groove (61) has a raised limiting ridge (62) on its edge, which is used to prevent the finger from sliding backward when throwing.

4. A portable throwable forest fire extinguisher according to claim 1, characterized in that, The anti-slip grip (6) is hinged to a flip-out anti-slip ring (63) and a flexible wristband (64) at one end away from the throwing aid component (8). The anti-slip ring (63) is embedded in a corresponding storage groove (65) on the surface of the outer shell (1), and an easy-break safety pin (66) is provided at the hinge root of the anti-slip ring (63).

5. A portable throwable forest fire extinguisher according to claim 1, characterized in that, The counterweight (7) is a composite structure, which includes an outer rigid counterweight shell (71) and an elastic energy-absorbing core (72) filled inside the rigid counterweight shell (71).

6. A portable throwable forest fire extinguisher according to claim 5, characterized in that, The rigid counterweight shell (71) is connected to the inner wall of the outer shell (1) by a plurality of elastic support columns (73) arranged circumferentially at intervals. The elastic support columns (73) are made of rubber.

7. A portable throwable forest fire extinguisher according to claim 1, characterized in that, The thread (4) includes an external thread section (41) located at the lower end of the reaction material box (2) and an internal thread section (42) located at the upper end of the water storage box (3), wherein the external thread section (41) and the internal thread section (42) are screwed together.

8. A portable throwable forest fire extinguisher according to claim 1, characterized in that, The outer wall of the outer shell (1) is provided with several longitudinal storage slots (81) evenly distributed in the circumference, and each longitudinal storage slot (81) is hinged with an arc-shaped tail wing (83) by a torsion spring hinge (82).

9. A portable throwable forest fire extinguisher according to claim 8, characterized in that, The longitudinal storage groove (81) is provided with a limiting claw (84). When the arc-shaped tail wing (83) is unfolded to a preset angle, the limiting claw (84) is embedded in the locking recess (85) corresponding to the root of the arc-shaped tail wing (83) to limit the arc-shaped tail wing (83) from shaking or folding under the action of airflow.

10. A portable throwable forest fire extinguisher according to claim 1, characterized in that, The shell wall thickness of the area where the anti-slip grip part (6) is located is greater than the shell wall thickness of the other areas of the outer shell (1), and a closed annular heat insulation cavity (67) is formed inside the shell in this area.

Images