A portable fire fighting apparatus for pumping smoke

Abstract

The application provides a portable fire-fighting equipment for pumping flue gas, and relates to the technical field of fire-fighting equipment, which comprises a fan, two sections of air pipes connected to the output end and the input end of the fan respectively, a mobile power supply box for supplying power to the fan through a power supply line, a flange arranged annularly and radially outwardly on the output end and the input end of the fan, and a plurality of insertion holes arranged annularly on the flange; a connecting ring is arranged at the connection between the air pipe and the fan, the connecting ring is in sealing contact with the flange, an interfacing ring protruding axially outwardly is arranged on one side of the connecting ring, the interfacing ring is connected to the air pipe through a socket joint, a plurality of bolts corresponding to the insertion holes are arranged on the other side of the connecting ring, the bolts are inserted into the insertion holes, a plurality of plectrums are rotatably connected to one side of the connecting ring away from the fan, and hooks extending to the flange are fixedly arranged on the end of the plectrums. The application aims to improve the efficiency and safety of fire-fighting operation through the innovative connection mode, the enhanced sealing property and the optimized portability design.

Description

Technical Field

[0001] This invention relates to the field of fire protection equipment technology, specifically a portable fire protection device for extracting and delivering smoke. Background Technology

[0002] In existing firefighting operations, especially in scenarios requiring smoke extraction, traditional firefighting equipment often faces problems such as inconvenient connection, poor sealing, and insufficient portability. Specifically: 1. Inconvenient connection: Traditional connection methods between fans and ducts often use bolts or clamps. These methods are complicated and time-consuming in emergency situations, which is not conducive to rapid deployment and response to sudden fires.

[0003] 2. Poor Sealing: The sealing performance at the connection between the fan and the duct is crucial to the efficiency of smoke extraction. Poor sealing can lead to smoke leakage, affecting extraction efficiency and potentially posing a health threat to firefighters. However, existing equipment often falls short of ideal sealing performance.

[0004] 3. Insufficient portability: Firefighting equipment needs to be moved frequently between different locations, so portability is an important consideration. Traditional equipment is bulky, heavy, and has complex connecting parts, resulting in poor portability, which affects the flexibility and efficiency of firefighting operations. Summary of the Invention

[0005] To address the aforementioned problems, this invention proposes a portable fire-fighting device for extracting smoke, aiming to improve the efficiency and safety of fire-fighting operations through innovative connection methods, enhanced sealing, and optimized portability design.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a portable fire-fighting device for extracting smoke, comprising a fan, two sections of duct connected to the output end and the input end of the fan respectively, and a mobile power supply box that supplies power to the fan via a power supply line. The output end and the input end of the fan are provided with annular flanges that expand outward in a radial direction, and the flanges are provided with a plurality of sockets arranged in a ring array. The connection between the duct and the fan is provided with a connecting ring, which is in contact with the flange seal. One side of the connecting ring is provided with a mating ring that protrudes outward along the axial direction. The mating ring is connected to the duct in a socket. The other side of the connecting ring is provided with multiple pins that correspond to each of the insertion holes and are inserted into each other. The connecting ring is rotatably connected to a plurality of paddles on the side away from the fan. The end of each paddle is fixedly provided with a hook extending toward the flange. The paddles and the hooks form a V-shaped structure.

[0007] In some embodiments, the duct is a retractable and adjustable corrugated pipe.

[0008] In some embodiments, the top of the fan and the power supply box are respectively provided with a pipe rack and a wire rack, and both the pipe rack and the wire rack are composed of at least three vertically erected columns.

[0009] In some embodiments, the duct includes several sections of pipe body made of flexible windproof fabric and an annular frame disposed between adjacent pipe bodies. The annular frame is a hollow metal ring structure with an annular slit on its inner side. The ends of the flexible windproof fabric on both sides of the annular frame are inserted into the slit and rolled up in the opposite direction within the annular frame. A metal heat dissipation ring is also embedded in the slit. The heat dissipation ring is interference-fitted between the rolled-up ends of adjacent flexible windproof fabrics, with the inner ring of the heat dissipation ring remaining inside the pipe body and the outer ring extending into the annular frame.

[0010] In some embodiments, the annular frame is provided with clamps.

[0011] In some embodiments, the top of the fan is provided with a lifting ring.

[0012] In some embodiments, the bottom of the fan is provided with a base, the vertical cross-section of the base is L-shaped, and the base is a trapezoidal structure that is narrower at the top and wider at the bottom.

[0013] In some embodiments, both the fan and the power supply box are equipped with multiple casters at their bottoms.

[0014] In some embodiments, filters are provided at both the input and output ends of the fan.

[0015] In some embodiments, both the power supply box and the fan are equipped with shoulder straps, the length of which is adjustable.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This invention employs a design that combines flanges and sockets, connecting rings and pins, along with a V-shaped structure formed by levers and hooks, enabling a quick and convenient connection between the fan and the duct. This connection method eliminates the need for tools, significantly reducing connection time and improving response speed and efficiency in firefighting operations. In emergencies, firefighters can quickly connect the duct to the fan and immediately begin smoke extraction, gaining valuable time for rescue efforts.

[0017] This invention effectively prevents smoke leakage through the sealing contact between the connecting ring and the flange, as well as the interference fit design of the V-shaped structure. This double sealing mechanism ensures efficient smoke extraction and avoids smoke leakage problems caused by poor sealing. The enhanced sealing performance not only improves the efficiency of smoke extraction but also protects the safety of firefighters, reducing their risk of exposure to harmful fumes.

[0018] This invention employs a mobile power supply box design, making the entire device easier to carry and move. Firefighters can flexibly deploy the equipment at different locations according to actual needs, improving the flexibility of firefighting operations.

[0019] The connection method of this invention adopts a plug-in fit and a V-shaped interference fit. This design reduces the loosening or damage problems that may be caused by traditional bolt tightening or clamping methods, thus improving the reliability and durability of the equipment. During long-term use, the stability and sealing of the connection method reduce the frequency of maintenance and component replacement, thereby lowering operating costs. Attached Figure Description

[0020] Figure 1 This is an overall structural diagram of the fire-fighting equipment of the present invention in its stored state; Figure 2 This is an overall structural diagram of the fire-fighting equipment of the present invention in its operational state; Figure 3 This is a detailed structural drawing of the fan in the fire-fighting equipment of the present invention; Figure 4 This is an overall structural diagram of the air duct of the fire-fighting equipment of the present invention; Figure 5 This is a detailed structural drawing of the connecting ring and its components in the fire-fighting equipment of the present invention (the side of the connecting ring connected to the air duct). Figure 6 This is a detailed structural drawing of the connecting ring and its components in the fire-fighting equipment of the present invention (the side of the connecting ring connected to the fan). Figure 7 This is an enlarged cross-sectional view of the connection between adjacent flexible windproof cloths of the air duct of the fire-fighting equipment of the present invention (when a heat dissipation ring is provided); Figure 8 This is an enlarged cross-sectional view of the connection between adjacent flexible windproof cloths of the air duct of the fire-fighting equipment of the present invention (when no heat dissipation ring is provided); Figure 9 This is a detailed structural diagram of the annular frame of the air duct of the fire-fighting equipment of the present invention; Figure 10 This is a detailed structural diagram of the power supply box for the fire-fighting equipment of the present invention.

[0021] In the picture: 1. Fan; 101. Flanged edge; 102. Insertion hole; 103. Pipe rack; 104. Lifting ring; 105. Base; 106. Casters; 107. Filter screen; 2. Air duct; 201. Connecting ring; 202. Butt ring; 203. Pin; 204. Paddle; 205. Hook; 206. Circular frame; 2061. Slit; 207. Flexible windproof cloth; 208. Clamp; 209. Heat dissipation ring; 3. Power supply box; 301. Cable tray; 302. Shoulder strap; 4. Power supply line. Detailed Implementation

[0022] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0023] In the description of this invention, it should be understood that the terms "length", "width", "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.

[0024] Furthermore, the terms "first" and "second" 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0026] Please see Figure 1-6This embodiment provides a portable fire-fighting device for extracting smoke, including a fan 1, two ducts 2 connected to the output and input ends of the fan 1 respectively, and a mobile power supply box 3 that supplies power to the fan 1 via a power supply line 4. The design of the mobile power supply box 3 makes the entire device more portable and flexible. At the fire scene, the power supply box 3 can be quickly moved as needed to provide power support to the fan 1. This design greatly improves the applicability and practicality of the device. Both the output and input ends of the fan 1 are provided with annular flanges 101 that expand radially outward. Multiple insertion holes 102 are arranged in a circular array on the flanges 101. The design of the flanges 101 provides the basic structure for connecting the fan 1 and the ducts 2. Its radially outward shape increases the connection area and enhances the stability of the connection. The insertion holes 102 provide positioning and fixing points for the subsequent pin 203 connection, ensuring precise alignment and a firm connection between the ducts 2 and the fan 1. To enhance safety, an explosion-proof relay can be installed inside fan 1. This design provides additional safety protection against potentially hazardous environments such as gas leaks. The explosion-proof relay effectively prevents explosions caused by sparks or arcs inside electrical equipment, ensuring the safe operation of equipment in flammable and explosive environments. At fire scenes, especially when dealing with fires in chemical plants, oil depots, or gas stations, equipment must possess high explosion-proof performance to prevent secondary disasters. A connecting ring 201 is provided at the connection between the duct 2 and the fan 1. The connecting ring 201 is in sealing contact with the flange 101. One side of the connecting ring 201 has an axially protruding mating ring 202, which is inserted and connected to the duct 2. The other side of the connecting ring 201 has multiple pins 203 that correspond one-to-one with each insertion hole 102 and are inserted and mated. The design of the connecting ring 201 enables quick connection and sealing between the duct 2 and the fan 1. The insertion and mating connection between the mating ring 202 and the duct 2 ensures a stable connection between the duct 2 and the connecting ring 201, while the engagement of the pins 203 with the insertion holes 102 enables precise positioning and fixation between the fan 1 and the duct 2. This design makes the installation and disassembly of the duct 2 simple and quick. Multiple levers 204 are rotatably connected to the side of the connecting ring 201 away from the fan 1. Each lever 204 has a hook 205 fixedly attached to its end, extending towards the flange 101. The levers 204 and hooks 205 form a V-shaped structure. When the levers 204 are turned fully in any clockwise direction, the flange 101 and the edge of the connecting ring 201, which are in contact with each other, will be interference-fitted into the V-shaped structure. This V-shaped structure formed by the levers 204 and hooks 205 is crucial for achieving a tight seal between the fan 1 and the duct 2. When the levers 204 are moved, the V-shaped structure interference-fits into the edges of the flange 101 and the connecting ring 201, forming a tight sealing layer. This design not only enhances the sealing performance of the connection but also allows for easy disassembly by simply turning the levers 204 in the opposite direction, without the need for any tools.

[0027] In summary, this invention patent, through the design of the flange 101 at the output and input ends of the fan 1, the design of the connecting ring 201 of the duct 2, the V-shaped structure design of the lever 204 and hook 205, and the design of the mobile power supply box 3, realizes a portable fire-fighting device for extracting smoke. This device not only has stable connection and good sealing performance, but also is very simple and quick to install and disassemble, greatly improving the efficiency and safety of fire-fighting work.

[0028] In use, this invention is first performed by aligning the connecting ring 201 of the duct 2 with the flange 101 of the fan 1, ensuring that the pins 203 on the connecting ring 201 correspond one-to-one with the insertion holes 102 on the flange 101. Then, the connecting ring 201 is pushed towards the flange 101 until the pins 203 are fully inserted into the insertion holes 102, achieving a preliminary connection. Next, the lever 204 on the connecting ring 201 is moved, causing the V-shaped structure formed by the lever 204 and the hook 205 to connect the flange 101 and the edge of the connecting ring 201. The edges are interlocked into the V-shaped structure to form a tight sealing layer. Then, the mobile power supply box 3 is connected to the fan 1 through the power supply line 4 to ensure normal power supply. Then, the fan 1 is started to draw out the flue gas. When it is necessary to disassemble the duct 2, simply reverse the lever 204 to move the edge of the flange 101 and the edge of the connecting ring 201 out of the V-shaped structure formed by the lever 204 and the hook 205, and then pull out the connecting ring 201. This disassembly method is also simple and quick and does not require the use of tools.

[0029] As shown in some embodiments, such as Figure 2 or Figure 4As shown, duct 2 is a telescopic and adjustable corrugated pipe with excellent flexibility and extensibility. The telescopic and adjustable corrugated pipe design allows the length of duct 2 to be adjusted according to the needs of the actual use scenario. In fire scenes, there are often various complex terrains and obstacles. Traditional fixed-length duct 2 may not meet all needs, while the telescopicity of the corrugated pipe greatly enhances the adaptability of the equipment. It can easily bypass obstacles and reach the position where smoke needs to be extracted. Moreover, the flexibility of the corrugated pipe makes it easier to bend and shape during installation. Without additional tools or complicated operating procedures, firefighters can quickly complete the installation and connection of duct 2 by manually adjusting the shape and length of the corrugated pipe, which greatly improves the installation efficiency.

[0030] Preferred, such as Figure 1-3 As shown, the tops of the fan 1 and power supply box 3 are respectively equipped with a pipe rack 103 and a wire rack 301. Both the pipe rack 103 and the wire rack 301 are composed of at least three vertically erected columns, forming a stable support structure. The duct 2, when retracted to its shortest length, can be fitted onto the pipe rack 103 for convenient storage. The power supply cable 4 can be wound and stored on the wire rack 301, ensuring its neat and orderly arrangement. The design of the pipe rack 103 and the wire rack 301 provides dedicated storage space for the duct 2 and the power supply cable 4. When the equipment is not in use, the duct 2 can be retracted to its shortest length and fitted onto the pipe rack 103, and the power supply cable 4 can be wound on the wire rack 301. This greatly reduces the space occupied by the equipment, making it easier to carry and store. For portable fire-fighting equipment that needs to be frequently moved and used in different locations, this design greatly improves the equipment's portability and practicality.

[0031] As shown in some embodiments, such as Figure 7-9 As shown, the duct 2 includes several sections of pipe body made of flexible windproof fabric 207 and annular frames 206 disposed between adjacent pipe bodies. The annular frames 206 are used to maintain the basic shape of the duct 2, and when the duct 2 needs to be stored, the annular frames 206 can be stacked concentrically, which is very convenient. The flexible windproof fabric 207, as the main body of the duct 2, can be easily folded and bent, realizing the flexible extension and bending of the duct 2. The annular frames 206 are hollow metal ring structures. An annular slit 2061 is opened on the inner side. The ends of the flexible windproof cloth 207 on both sides of the annular frame 206 are inserted into the slit 2061 and rolled up in the opposite direction inside the annular frame 206 to connect the annular frame 206 and the flexible windproof cloth 207. A metal heat dissipation ring 209 is also embedded in the slit 2061. The heat dissipation ring 209 is interference-fitted between the rolled-up ends of the adjacent flexible windproof cloth 207. The inner ring of the heat dissipation ring 209 remains in the tube body, while the outer ring extends into the annular frame 206.

[0032] Specifically, the design of the ring frame 206 not only maintains the basic shape of the duct 2 but also makes it extremely convenient to store. Simply stacking the ring frames 206 concentrically greatly reduces the space occupied by the duct 2, making it easy to carry and store. At a fire scene, this design allows firefighters to quickly deploy the duct 2, improving response speed. The flexible windproof fabric 207, as the main body of the duct 2, has excellent flexibility and extensibility. This allows the duct 2 to be easily folded and bent according to actual needs, adapting to various complex terrains and obstacles, ensuring smooth smoke extraction. The slit 2061 design on the inner side of the ring frame 206, and the reverse roll-up of the flexible windproof fabric 207 end within the slit 2061, achieves a stable connection between the ring frame 206 and the flexible windproof fabric 207. This connection method not only enhances the structural strength of the duct 2 but also improves its durability, ensuring that the duct 2 is not easily damaged during long-term use, and is also very simple to assemble and disassemble. When transporting high-temperature flue gas, the heat dissipation ring 209 can quickly transfer the heat inside the duct 2 to the metal annular frame 206, and then transfer it to the outside through the annular frame 206, preventing excessive heat accumulation in the duct 2. This design effectively reduces the operating temperature of the duct 2, improves equipment safety, and prevents potential risks caused by high temperatures. Furthermore, the presence of the heat dissipation ring 209 allows the flexible windproof cloth 207, which is inserted into the slit 2061, to be more tightly packed, thereby increasing the connection strength between the flexible windproof cloth 207 and the annular frame 206. In the above structure, the connection between the annular frame 206 and the flexible windproof cloth 207 is simple and effective, requiring no complex installation steps or professional tools. The flexible windproof cloth 207 can be quickly inserted or removed simply by slightly opening the slit 2061 on the annular frame 206 using the toughness of the metal material. At the same time, the embedding of the heat dissipation ring 209 does not increase the difficulty of installation; on the contrary, due to its effective heat dissipation, it reduces the frequency of maintenance required for the duct 2 due to high temperatures, thus lowering operating costs.

[0033] Preferred, such as Figure 7-8As shown, the annular frame 206 is equipped with a clamp 208, which is used to tighten the slit 2061 on the inner side of the annular frame 206, thereby clamping the flexible windproof cloth 207 and the heat dissipation ring 209 inserted into the slit 2061. This clamping action effectively prevents the flexible windproof cloth 207 from coming out of the slit 2061 due to external pulling or internal flue gas pressure during use, enhancing the structural stability and connection reliability of the duct 2. The clamp 208 not only clamps the flexible windproof cloth 207, but also ensures that the heat dissipation ring 209 is firmly embedded in the slit 2061. This ensures that the heat dissipation ring 209 can effectively transfer the heat inside the duct 2 to the annular frame 206, and dissipate it to the outside through the annular frame 206, avoiding excessive heat accumulation in the duct 2 and improving the safety of the equipment. In addition, the design of the clamp 208 makes the connection and disassembly process of the flexible windproof cloth 207 and the ring frame 206 easier. During installation, simply insert the end of the flexible windproof cloth 207 into the slit 2061 and then tighten it with the clamp 208. During disassembly, simply loosen the clamp 208 to easily pull the flexible windproof cloth 207 out of the slit 2061. This design saves installation and disassembly time and improves work efficiency.

[0034] In some embodiments, such as Figure 3 As shown, the top of the fan 1 is equipped with a lifting ring 104, which is used to connect with lifting equipment. In fire-fighting situations, it is often necessary to install the fan 1 at a specific height or position according to the actual situation in order to more effectively extract smoke. The design of the lifting ring 104 allows the fan 1 to be easily lifted and fixed in the required position by the lifting equipment without the need for additional complex support structures or mounting brackets.

[0035] In some embodiments, such as Figure 3 As shown, the bottom of the fan 1 is provided with a base 105. The vertical cross section of the base 105 is L-shaped, and the base 105 is a trapezoidal structure that is narrow at the top and wide at the bottom. The trapezoidal structure makes the base 105 more stable when placed and less likely to tip over.

[0036] In some embodiments, such as Figure 1-3 As shown, both the fan 1 and the power supply box 3 are equipped with multiple casters 106 at their bottoms. The casters 106 have good rotation flexibility and load-bearing capacity, which allows the fan 1 and the power supply box 3 to move easily on various types of ground.

[0037] In some embodiments, such as Figure 3As shown, both the input and output ends of the fan 1 are equipped with filters 107. The filters 107 are detachable and are fixed to the inside of the fan 1 port by clips or bolts. The filter 107 is preferably made of high-temperature resistant and corrosion-resistant stainless steel, which can effectively block large particles and sparks in the flue gas, protect the internal blades of the fan 1 from damage, and ensure the smooth flow of flue gas.

[0038] In some embodiments, such as Figure 10 As shown, both the power supply box 3 and the fan 1 are equipped with double shoulder straps 302. The length of the shoulder straps 302 is adjustable to accommodate users of different body types. The shoulder straps 302 are made of wear-resistant and pressure-resistant nylon or similar high-strength fiber materials to ensure the stability and comfort of the power supply box 3 and the fan 1 during carrying, so that users can easily carry the power supply box 3 and the fan 1 and move quickly at the fire scene.

[0039] In some embodiments, the fan 1 is equipped with a hazardous gas detection probe, a design that further enhances the safety and intelligence of the equipment. The hazardous gas detection probe can monitor the concentration of hazardous gases, such as carbon monoxide and hydrogen sulfide, in the flue gas drawn by the fan 1 in real time. Once the concentration of a hazardous gas exceeds the safety standard, the probe will immediately issue an alarm, reminding operators to take appropriate measures, such as remote operation or adjusting the equipment's operating status, to avoid personnel poisoning or equipment damage. This intelligent design not only improves the automation level of the equipment but also effectively prevents potential risks caused by hazardous gas leaks.

[0040] Furthermore, the power supply box 3 integrates a 24V battery power supply, inverter, explosion-proof protector, and start button. The 24V battery power supply serves as the main power source, providing power support for the entire equipment. When it is necessary to start fan 1, the 24V DC power output from the battery power supply is first converted into 220V AC power by the inverter, then safely isolated and protected by the explosion-proof protector, and finally output to fan 1. Fan 1 is designed to be driven by 220V AC power and is equipped with a start button. Firefighters only need to press the start button to start the operation of fan 1 and begin extracting smoke.

[0041] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A portable fire-fighting device for extracting smoke, comprising a fan (1), two ducts (2) respectively connected to the output and input ends of the fan (1), and a mobile power supply box (3) supplying power to the fan (1) via a power supply line (4), characterized in that: The fan (1) has a ring-shaped flange (101) that extends outward in the radial direction at both the output and input ends. Multiple sockets (102) are arranged in a ring array on the flange (101). A connecting ring (201) is provided at the connection between the air duct (2) and the fan (1). The connecting ring (201) is in sealed contact with the flange (101). One side of the connecting ring (201) is provided with a mating ring (202) that protrudes outward along the axial direction. The mating ring (202) is inserted and connected to the air duct (2). The other side of the connecting ring (201) is provided with multiple pins (203) that correspond one-to-one with each insertion hole (102) and are inserted and matched. The connecting ring (201) is rotatably connected to a plurality of paddles (204) on the side away from the fan (1). The end of the paddle (204) is fixedly provided with a hook (205) extending toward the flange (101). The paddle (204) and the hook (205) form a V-shaped structure.

2. A portable fire-fighting device for extracting smoke according to claim 1, characterized in that: The air duct (2) is a retractable and adjustable corrugated pipe.

3. A portable fire-fighting device for extracting smoke according to claim 2, characterized in that: The top of the fan (1) and the power supply box (3) are respectively provided with a pipe rack (103) and a wire rack (301), and both the pipe rack (103) and the wire rack (301) are composed of at least three vertically installed columns.

4. A portable fire-fighting device for extracting smoke according to claim 2, characterized in that: The duct (2) includes several sections of pipe body made of flexible windproof cloth (207) and an annular frame (206) disposed between adjacent pipe bodies. The annular frame (206) is a hollow metal ring structure with an annular slit (2061) on its inner side. The ends of the flexible windproof cloth (207) on both sides of the annular frame (206) are inserted into the slit (2061) and rolled up in the opposite direction in the annular frame (206). A metal heat dissipation ring (209) is also embedded in the slit (2061). The heat dissipation ring (209) is interference-fitted between the rolled-up ends of adjacent flexible windproof cloth (207). The inner ring of the heat dissipation ring (209) remains in the pipe body, while the outer ring extends into the annular frame (206).

5. A portable fire-fighting device for extracting smoke according to claim 4, characterized in that: The ring frame (206) is provided with a clamp (208).

6. A portable fire-fighting device for extracting smoke according to claim 1, characterized in that: The top of the fan (1) is provided with a lifting ring (104).

7. A portable fire-fighting device for extracting smoke according to claim 1, characterized in that: The bottom of the fan (1) is provided with a base (105), the vertical section of the base (105) is L-shaped, and the base (105) is a trapezoidal structure that is narrow at the top and wide at the bottom.

8. A portable fire-fighting device for extracting smoke according to claim 1, characterized in that: The bottom of both the fan (1) and the power supply box (3) is equipped with multiple casters (106).

9. A portable fire-fighting device for extracting smoke according to claim 1, characterized in that: The fan (1) is equipped with filters (107) at both the input and output ends.

10. A portable fire-fighting device for extracting smoke according to claim 1, characterized in that: Both the power supply box (3) and the fan (1) are equipped with shoulder straps (302), the length of which is adjustable.

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