Fire hose inflation rescue device

Abstract

The application discloses a fire hose inflation rescue device in the technical field of fire rescue, which comprises a multi-interface gas source supply module and an inflation rescue module. The multi-interface gas source supply module comprises a shell and a gas shunt valve. A main gas cylinder interface, an external gas source quick connection interface and a manual emergency interface are arranged on one side of the shell, and a main inflation interface and a backup inflation interface are arranged on the other side. The inflation rescue module comprises an inflation belt and a modular splicing unit. The two ends of the inflation belt are respectively fixed with an inflation pipe and a connecting pipe. The modular splicing unit comprises a first splicing assembly and a second splicing assembly, and the interiors of the two are both provided with elastic sealing structures. An adjusting structure is further arranged on the first splicing assembly. The device is compatible with multiple gas sources and can be quickly combined into different lengths or forms through the modular splicing unit. The elastic sealing structure is automatically sealed when not connected, and the airflow is controlled to be on or off through the adjusting structure after connection. The structure is compact, and the device is suitable for the rapid deployment of fire fighting, flood control and outdoor emergency rescue.

Description

Technical Field

[0001] This invention relates to the field of fire rescue technology, specifically to a fire hose inflation rescue device. Background Technology

[0002] In fire rescue, flood disaster relief, and outdoor emergency rescue operations, inflatable rescue equipment has become an indispensable key piece of equipment in water rescue, ice rescue, flood evacuation, and temporary passage construction tasks due to its significant advantages such as light weight, small folding size, fast deployment speed, and large buoyancy reserve.

[0003] Common inflatable rescue equipment includes inflatable life rafts, inflatable pontoon bridges, inflatable stretchers, and inflatable rescue channels. These devices typically use inflatable belts or inflatable chambers made of high-strength flexible materials as the core load-bearing structure. By injecting compressed air or inert gas, they form rigid or semi-rigid buoyancy bodies, thereby providing floating support for trapped personnel or providing a passage platform for rescue forces.

[0004] However, existing inflatable rescue devices have a single air source interface, which is only compatible with specific gas cylinders or air compressors, making it difficult to find a matching air source in complex rescue sites; the inflatable belts lack a convenient splicing structure, making it difficult to quickly assemble them into different lengths or shapes according to on-site needs.

[0005] Based on this, the present invention designs a fire hose inflation rescue device to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a fire hose inflation rescue device to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A fire hose inflation rescue device includes a multi-port air supply module and an inflation rescue module; The multi-interface gas supply module includes a housing and a gas diversion valve located inside the housing. One side of the housing is provided with a main gas cylinder interface, an external gas source quick-connect interface, and a manual emergency interface, which are connected to the gas diversion valve inlet end via a pipe. The other side is provided with a main charging interface and a backup charging interface, which are connected to the gas diversion valve outlet end via a pipe. Among them, the main air cylinder interface is used to connect the air cylinder of the breathing apparatus, the external air source quick-connect interface is used to connect the external compressed air source or mobile air compressor, the manual emergency interface is used to connect the manual air pump, and the main inflation interface and the backup inflation interface are used to simultaneously distribute the air source to the main inflation belt and the backup inflation belt. The inflatable rescue module includes an inflatable belt and a modular splicing unit. Both ends of the inflatable belt are fixed with annular end plates. An inflation tube is fixed at the center of one annular end plate, and a connecting tube is fixed at the center of the other annular end plate. The modular splicing unit includes an independently set first splicing component and a second splicing component, and the first splicing component and the second splicing component are respectively set on the inflation tube and the connecting tube; The first splicing component and the second splicing component are respectively provided with a first elastic sealing structure and a second elastic sealing structure, and the first splicing component is provided with an adjustment structure connected to the first elastic sealing structure.

[0008] Preferably, the first splicing component includes a first splicing frustum fixed to the outer end of the inflation tube. The center of the inner end of the first splicing frustum is connected to the inflation tube, and a splicing threaded post is fixed at the center of the outer end. The outer end of the first splicing frustum is uniformly provided with a plurality of axially arranged first through holes along the circumferential direction. The inner end of the first through holes is connected to the inflation tube through air holes, and the plurality of first through holes are correspondingly connected to the first elastic sealing structure.

[0009] Preferably, the first elastic sealing structure includes an annular movable end plate located outside the first splicing truncated cone. The movable end plate is connected to the adjustment structure. A sealing cylinder is fixed on the movable end plate at the position corresponding to each first through hole. The sealing cylinder is slidably connected in the first through hole, and its outer wall is cut off from the inner wall of the first through hole through a sealing gasket. A plurality of springs are also evenly connected on the movable end plate. A cylindrical spring groove is provided on the first splicing truncated cone. One end of the spring is connected to the inner end of the cylindrical spring groove. A sliding adjustment sleeve is fixed on the side of the movable end plate away from the inflation band.

[0010] Preferably, the adjustment structure is a thread on the outer ring side of the first splicing truncated cone, and a threaded adjustment ring is threadedly connected thereto, with one side of the threaded adjustment ring in contact with the moving end plate.

[0011] Preferably, both the main inflation port and the backup inflation port have a connecting threaded hole at the center of their ends, and multiple inflation through holes are evenly provided at the ends along the outer circumferential direction of the connecting threaded hole.

[0012] Preferably, the second splicing assembly includes a second splicing frustum fixed to the outer end of the connecting pipe. The inner section of the second splicing frustum is provided with a circular spring groove communicating with the connecting pipe, and the center of the outer end is provided with a splicing threaded hole. The outer end of the second splicing frustum is uniformly provided with a plurality of axially arranged second through holes communicating with the circular spring groove along the circumferential direction, and the second elastic sealing structure is located in the circular spring groove.

[0013] Preferably, the second elastic sealing structure includes an annular sealing plate located in a circular spring groove. A sliding tube is fixed at the center of one end of the annular sealing plate. The sliding tube is slidably connected to the inner wall of the connecting tube. The annular sealing plate is connected to one end of the circular spring groove via a spring. A plurality of adjusting shafts are also fixed on the side of the annular sealing plate with the sliding tube. One end of the plurality of adjusting shafts extends out of the second splicing frustum and is fixed by an annular adjusting plate. The outer edge of the adjusting plate corresponds to the outer edge of the first elastic sealing structure.

[0014] Preferably, the inflatable belt comprises, from the inside out, an airtight inner lining layer, a fiber reinforcement layer, and a wear-resistant outer protective layer.

[0015] Compared with the prior art, the beneficial effects of the present invention are: The multi-interface air supply module of the present invention can connect to air respirator cylinders, external compressed air sources or mobile air compressors and manual air pumps, and achieve dual output through the main inflation interface and the backup inflation interface. It has multi-source compatibility and can work under high-pressure cylinders, external compressors or even manual air pumps, adapting to various rescue scenarios. The inflatable rescue module of this invention can be quickly assembled into any length through modular splicing units to meet different rescue needs, and the elastic sealing structure automatically seals when not connected, preventing both leakage and the intrusion of impurities. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the modular splicing unit of the present invention; Figure 3 This is a schematic diagram showing the connection between the first and second frustums of splicing according to the present invention. Figure 4 This is a schematic diagram of the structure of the second splicing frustum of the present invention; Figure 5 This is a schematic diagram of the structure of the annular end plate of the present invention; Figure 6 for Figure 2 Schematic diagram of the structure at point A in the middle; Figure 7 This is a schematic diagram of the end structure of the main inflation interface of the present invention.

[0018] The attached diagram lists the components represented by each number as follows: 100-Multi-interface gas supply module, 101-Gas diversion valve, 102-Main gas cylinder interface, 103-External gas source quick-connect interface, 104-Manual emergency interface, 105-Main inflation interface, 106-Spare inflation interface, 108-Connecting threaded hole, 109-Inflation through hole. 200-Inflatable rescue module, 201-Inflatable belt, 202-Annular end plate, 203-Connecting pipe, 204-Inflatable pipe, 205-Wear-resistant outer protective layer, 206-Fiber reinforcement layer, 207-Airtight inner lining layer; 300 - Modular splicing unit, 301 - Second splicing frustum, 302 - First splicing frustum, 303 - Circular spring groove, 304 - Second through hole, 305 - Splicing threaded hole, 306 - First through hole, 307 - Air hole, 308 - Splicing threaded column, 309 - Cylindrical spring groove; 400-Sliding adjusting sleeve, 401-Moving end plate, 402-Sealing cylinder, 403-Threaded adjusting ring, 404-Adjusting plate, 405-Adjusting shaft, 406-Sealing ring plate. Detailed Implementation

[0019] 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. 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.

[0020] Please refer to the accompanying drawings. The present invention provides a fire hose inflation rescue device, which mainly includes two parts: a multi-port air supply module 100 and an inflation rescue module 200.

[0021] The multi-port gas supply module 100 includes a housing and a gas diversion valve 101 located inside the housing. One side of the housing is provided with a main gas cylinder interface 102, an external gas source quick-connect interface 103, and a manual emergency interface 104. These interfaces are all connected to the gas inlet end of the gas diversion valve 101 through pipes.

[0022] The main air cylinder interface 102 is used to connect to the air cylinder of the air respirator, and the air cylinder carried by the firefighter can be used directly as a high-pressure air source; the external air source quick-connect interface 103 is used to connect to an external compressed air source or a mobile air compressor, which is suitable for occasions with external power supply or compressed air supply; the manual emergency interface 104 is used to connect to a manual air pump, as an emergency backup method in the event of no power or air cylinder.

[0023] On the other side of the housing, there are a main inflation port 105 and a backup inflation port 106. These two ports are connected to the outlet of the gas diversion valve 101 through pipes, which are used to distribute the gas source to the main inflation belt and the backup inflation belt at the same time, so as to realize dual-path parallel inflation and improve the efficiency of rescue preparation.

[0024] The inflatable rescue module 200 includes an inflatable belt 201 and a modular splicing unit 300. Annular end plates 202 are fixed to both ends of the inflatable belt 201. An inflation tube 204 is fixed at the center of one annular end plate 202, and a connecting tube 203 is fixed at the center of the other annular end plate 202. The modular splicing unit 300 includes independently configured first splicing components and second splicing components, which are respectively mounted on the inflation tube 204 and the connecting tube 203. The first and second splicing components are respectively provided with a first elastic sealing structure and a second elastic sealing structure, and the first splicing component is provided with an adjustment structure connected to the first elastic sealing structure.

[0025] Specifically, the first splicing assembly includes a first splicing frustum 302 fixed to the outer end of the inflation tube 204. The center of the inner end of the first splicing frustum 302 is connected to the inflation tube 204, and a splicing threaded post 308 is fixed to the center of the outer end. The outer end of the first splicing frustum 302 is provided with a plurality of axially arranged first through holes 306 evenly along the circumferential direction. The inner end of the first through holes 306 is connected to the inflation tube 204 through air holes 307, and the plurality of first through holes 306 are correspondingly connected to the first elastic sealing structure.

[0026] The first elastic sealing structure includes an annular movable end plate 401 located outside the first splicing frustum 302, which is connected to the adjustment structure. A sealing cylinder 402 is fixed to each of the first through holes 306 on the movable end plate 401. The sealing cylinder 402 is slidably connected to the first through hole 306, and its outer wall is tightly fitted to the inner wall of the first through hole 306 via a sealing gasket. Multiple springs are also evenly connected to the movable end plate 401. A cylindrical spring groove 309 is correspondingly provided on the first splicing frustum 302, with one end of the spring connected to the inner end of the cylindrical spring groove 309. A sliding adjustment sleeve 400 is fixed to the side of the movable end plate 401 away from the inflation band 201.

[0027] In the unconnected state, the spring pulls the movable end plate 401 close to the first splicing truncated cone 302, so that the multiple sealing tubes 402 fixed on the movable end plate 401 are respectively inserted into the corresponding first through holes 306 on the first splicing truncated cone 302. The outer wall of the sealing tube 402 is tightly fitted to the inner wall of the first through hole 306 through the sealing gasket, thereby blocking the airflow from the inflation tube 204 outward through the air hole 307 and the first through hole 306, and achieving automatic sealing.

[0028] When splicing is required, the splicing threaded post 308 at the center of the outer end of the first splicing frustum 302 engages and locks with the second splicing component, completing the mechanical connection.

[0029] When inflation is required, the adjusting structure acts on the sliding adjusting sleeve 400 of the moving end plate 401, pushing the moving end plate 401 to move outward against the spring force towards the outside of the first splicing frustum 302. The inner end of the sealing cylinder 402 is located outside the air hole 307 in the first through hole 306. The airflow can then enter the inflation tube 204 through the sealing cylinder 402, the first through hole 306 and the air hole 307, and then enter the docked inflation belt 201.

[0030] The first splicing component and the first elastic sealing structure are highly integrated within the first splicing frustum 302. No additional valves are required, the space occupied is small, and it is convenient for multiple sections of water hose to be connected and stored. This significantly improves the ease of operation, inflation efficiency and environmental adaptability of the fire hose inflation rescue device in emergency scenarios.

[0031] The adjustment structure is a thread on the outer ring side of the first splicing frustum 302, and a threaded adjustment ring 403 is threadedly connected to it. One side of the threaded adjustment ring 403 is in corresponding contact with the moving end plate 401. By screwing the threaded adjustment ring 403, it moves along the first splicing frustum 302, thereby pushing the moving end plate 401 to move, so as to realize the position adjustment of the first elastic sealing structure and the second elastic sealing structure.

[0032] Both the main inflation port 105 and the spare inflation port 106 have a connecting threaded hole 108 at their center ends, and multiple inflation through holes 109 are evenly distributed along the outer circumferential direction of the connecting threaded hole 108 at their ends. During inflation, the splicing threaded post 308 of the first splicing component is threaded into the connecting threaded hole 108. Then, by adjusting the screwing operation of the threaded adjusting ring 403, the position of the moving end plate 401 and other structures is adjusted, and the first through hole 306 is connected to the inflation through hole 109.

[0033] The second splicing assembly includes a second splicing frustum 301 fixed to the outer end of the connecting pipe 203. The inner section of the second splicing frustum 301 is provided with a circular spring groove 303 communicating with the connecting pipe 203, and the center of the outer end is provided with a splicing threaded hole 305. The outer end of the second splicing frustum 301 is provided with a plurality of axially arranged second through holes 304 evenly distributed along the circumferential direction and communicating with the circular spring groove 303, and the second elastic sealing structure is located in the circular spring groove 303.

[0034] The second elastic sealing structure includes an annular sealing plate 406 located in a circular spring groove 303. A sliding tube is fixed at the center of one end of the annular sealing plate 406. The sliding tube is slidably connected to the inner wall of the connecting tube 203, and the annular sealing plate 406 is connected to one end of the circular spring groove 303 via a spring. On the side of the annular sealing plate 406 where the sliding tube is located, a plurality of adjusting shafts 405 are also fixed. One end of the plurality of adjusting shafts 405 extends out of the second splicing frustum 301 and is fixed with an annular adjusting plate 404. The outer edge of the adjusting plate 404 corresponds to the outer edge of the first elastic sealing structure.

[0035] In the unconnected state, the spring pushes the annular sealing plate 406 tightly against the inner end face of the circular spring groove 303, causing the annular sealing plate 406 to block all the inner openings of the second through holes 304. At the same time, the sliding tube fixed to the annular sealing plate 406 is slidably connected to the inner wall of the connecting pipe 203, which can play a guiding and auxiliary sealing role. At this time, the gas inside the connecting pipe 203 cannot leak outward through the circular spring groove 303 and the second through holes 304.

[0036] When splicing is required, the splicing threaded post 308 of the first splicing component is screwed into the splicing threaded hole 305 at the center of the second splicing frustum 301 to achieve mechanical locking.

[0037] If the two inflatable bands 201 need to be connected, when the adjusting structure moves the first elastic sealing structure, the outer side of the first elastic sealing structure contacts the adjusting plate 404 of the second elastic sealing structure. When the first elastic sealing structure is adjusted, the adjusting plate 404 will move synchronously, and then the sealing plate 406 will move through the adjusting shaft 405, thereby opening the second through hole 304, so that the two inflatable bands 201 can be connected through the connecting pipe 203, the second through hole 304, the first through hole 306, the air hole 307 and the inflation pipe 204.

[0038] The inflatable hose 201 comprises, from the inside out, an airtight inner liner 207, a fiber reinforcement layer 206, and a wear-resistant outer protective layer 205. The airtight inner liner 207 ensures the inflatable hose 201 has good airtightness, preventing gas leakage; the fiber reinforcement layer 206 provides sufficient tensile and compressive strength, ensuring the inflatable hose 201 does not deform or crack under high pressure and complex environments; the wear-resistant outer protective layer 205 protects the internal structure from external friction, scratches, and chemical corrosion, extending its service life. This three-layer composite structure provides a safe, durable, and efficient inflation carrier for the fire hose inflatable rescue device, meeting the needs of use in harsh rescue environments.

[0039] The working principle of this device is as follows: In the single inflation mode of the inflation strip 201, the first splicing component at one end of the inflation strip 201 is connected to the main inflation interface 105 or the backup inflation interface 106 of the multi-interface air supply module 100. The specific operation is as follows: Screw the splicing threaded post 308 at the outer end of the first splicing frustum 302 into the connecting threaded hole 108 at the end of the main inflation port 105 or the spare inflation port 106 to complete the mechanical fixation; at this time, screw the threaded adjusting ring 403 to move it along the first splicing frustum 302 toward the moving end plate 401, pushing the moving end plate 401 to move outward against the spring tension, and the sealing cylinder 402 slides in the first through hole 306 until the inner end of the sealing cylinder 402 passes the air hole 307, so that the first through hole 306 is connected to the inflation through hole 109; the air source enters the inflation pipe 204 through the gas diversion valve 101, the inflation through hole 109, the first through hole 306, and the air hole 307, and finally fills the inflation belt 201; after inflation is completed, screw the threaded adjusting ring 403 in the opposite direction, the spring pulls the moving end plate 401 to reset, and the sealing cylinder 402 re-seals the first through hole 306 to achieve a seal.

[0040] In the multi-inflatable belt splicing mode, the second splicing component at the connecting pipe 203 end of the first inflatable belt 201 is connected to the first splicing component at the inflation pipe 204 end of the second inflatable belt 201. The splicing threaded post 308 of the first splicing component is screwed into the splicing threaded hole 305 of the second splicing frustum 301. The threaded adjusting ring 403 on the first splicing component is screwed on, pushing the moving end plate 401 and the sliding adjusting sleeve 400 outward, so that the moving end plate 401 is pressed tightly against the end face of the second splicing frustum 301. At the same time, the outer side of the sliding adjusting sleeve 400 contacts and pushes the adjusting plate 404 in the second splicing component. The adjusting plate 404 drives the annular sealing plate 406 to compress the spring inward through the adjusting shaft 405, so that the second through hole 304 is opened. At this time, the first through hole 306 and the second through hole 304 are connected, and the two inflatable belts 201 are internally connected, and can be inflated simultaneously or adjusted independently.

[0041] In emergency situations where there is no gas source, a manual air pump can be connected via the manual emergency interface 104 to supply air to the inflation belt 201 manually, ensuring that the device can still function under extreme conditions.

[0042] In summary, the fire hose inflation rescue device provided by this invention achieves compatibility with multiple air sources through the multi-interface air supply module 100, enables rapid assembly and sealed connection of the inflation hose 201 through the modular splicing unit 300, and ensures reliable sealing and flexible control of the air circuit through the elastic sealing structure and adjustment structure. The overall structure is compact, easy to operate, and highly adaptable, effectively improving deployment efficiency and rescue safety in fire rescue, flood relief, and outdoor emergency scenarios.

[0043] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A fire hose inflation rescue device, characterized in that, include: A multi-port gas supply module (100) includes a housing and a gas diversion valve (101) located inside the housing. One side of the housing is provided with a main gas cylinder interface (102), an external gas source quick-connect interface (103), and a manual emergency interface (104) connected to the gas diversion valve (101) via a pipe. The other side is provided with a main filling interface (105) and a backup filling interface (106) connected to the gas diversion valve (101) via a pipe. An inflatable rescue module (200) includes an inflatable belt (201) and a modular splicing unit (300). Both ends of the inflatable belt (201) are fixed with annular end plates (202). An inflation tube (204) is fixed at the center of one annular end plate (202), and a connecting tube (203) is fixed at the center of the other annular end plate (202). The modular splicing unit (300) includes an independently set first splicing component and a second splicing component, and the first splicing component and the second splicing component are respectively set on the inflation tube (204) and the connecting tube (203); The first splicing component and the second splicing component are respectively provided with a first elastic sealing structure and a second elastic sealing structure, and the first splicing component is provided with an adjustment structure connected to the first elastic sealing structure.

2. The fire hose inflation rescue device according to claim 1, characterized in that: The first splicing assembly includes a first splicing frustum (302) fixed to the outer end of the inflation tube (204). The center of the inner end of the first splicing frustum (302) is connected to the inflation tube (204), and a splicing threaded post (308) is fixed at the center of the outer end. The outer end of the first splicing frustum (302) is uniformly provided with a plurality of axially arranged first through holes (306) along the circumferential direction. The inner end of the first through hole (306) is connected to the inflation tube (204) through an air hole (307), and the plurality of first through holes (306) are correspondingly connected to the first elastic sealing structure.

3. The fire hose inflation rescue device according to claim 2, characterized in that: The first elastic sealing structure includes an annular movable end plate (401) located outside the first splicing truncated cone (302). The movable end plate (401) is connected to the adjustment structure. A sealing cylinder (402) is fixed on the movable end plate (401) at the position corresponding to each first through hole (306). The sealing cylinder (402) is slidably connected in the first through hole (306), and its outer wall is cut off from the inner wall of the first through hole (306) through a sealing gasket. A plurality of springs are also evenly connected on the movable end plate (401). A cylindrical spring groove (309) is provided on the first splicing truncated cone (302). One end of the spring is connected to the inner end of the cylindrical spring groove (309). A sliding adjustment sleeve (400) is fixed on the side of the movable end plate (401) away from the inflation belt (201).

4. The fire hose inflation rescue device according to claim 3, characterized in that: The adjustment structure is a thread on the outer ring side of the first splicing frustum (302), and a threaded adjustment ring (403) is threadedly connected thereto. One side of the threaded adjustment ring (403) is in contact with the moving end plate (401).

5. The fire hose inflation rescue device according to claim 3, characterized in that: Both the main inflation port (105) and the spare inflation port (106) have a connecting threaded hole (108) at the center of their ends, and multiple inflation through holes (109) are evenly provided at the ends along the outer circumferential direction of the connecting threaded hole (108).

6. The fire hose inflation rescue device according to claim 2, characterized in that: The second splicing assembly includes a second splicing frustum (301) fixed to the outer end of the connecting pipe (203). The inner section of the second splicing frustum (301) is provided with a circular spring groove (303) communicating with the connecting pipe (203), and a splicing threaded hole (305) is provided at the center of the outer end. The outer end of the second splicing frustum (301) is provided with a plurality of axially arranged second through holes (304) that communicate with the circular spring groove (303) along the circumferential direction, and the second elastic sealing structure is located in the circular spring groove (303).

7. The fire hose inflation rescue device according to claim 6, characterized in that: The second elastic sealing structure includes an annular sealing plate (406) located in a circular spring groove (303). A sliding tube is fixed at the center of one end of the annular sealing plate (406). The sliding tube is slidably connected to the inner wall of the connecting tube (203). The annular sealing plate (406) is connected to one end of the circular spring groove (303) by a spring. A plurality of adjusting shafts (405) are also fixed on the side of the annular sealing plate (406) where the sliding tube is located. One end of the plurality of adjusting shafts (405) extends out of the second splicing frustum (301) and is fixed by an annular adjusting plate (404). The outer side of the adjusting plate (404) corresponds to the outer side of the first elastic sealing structure.

8. The fire hose inflation rescue device according to any one of claims 1 to 7, characterized in that: The inflatable belt (201) includes, from the inside out, an airtight inner lining layer (207), a fiber reinforcement layer (206), and a wear-resistant outer protective layer (205).

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