Underwater lifesaving device for fire rescue

Abstract

The invention discloses an underwater lifesaving device for fire rescue. The underwater lifesaving device comprises an air pump, an air conveying pipe, a first one-way valve, a fluid distribution pipe and a waistband. The other end of the air delivery pipe is connected with an air inlet of the first one-way valve. The first one-way valve comprises a valve body, a valve clack and other parts, the valve clack and a reset elastic piece are arranged in a valve cavity, and the elastic piece enables the valve clack to tend to block the air outlet. The valve clack is provided with a threaded air passing through hole matched with external threads of the opening and closing rod, the knob sleeve fluid distribution pipe can rotate, and an axial guide rail of the knob sleeve fluid distribution pipe is in sliding fit with a sliding block of the opening and closing rod and can drive the opening and closing rod to rotate. One end of the fluid distribution pipe is connected with an air outlet of the one-way valve and provided with a water inlet with a plugging cover, the other end of the fluid distribution pipe is communicated with a plurality of fluid containers circumferentially spaced outside the waistband, each container is provided with a second one-way valve for guiding flow outwards, and the waistband is worn by a user. In order to overcome the defects in the prior art, the underwater lifesaving device for fire rescue provided by the invention can improve the safety of the device.

Description

Technical Field

[0001] This invention relates to the field of fire rescue technology, and in particular to an underwater rescue device for fire rescue. Background Technology

[0002] Underwater rescue equipment for fire and rescue is a specialized device designed to respond to water disasters and accidents. It includes multiple functional modules such as protection, positioning, demolition, and power support, aiming to ensure the safety of rescue personnel and improve the efficiency of underwater rescue.

[0003] In underwater fire rescue operations, underwater rescue devices are crucial for ensuring the safety of trapped individuals and improving the efficiency of rescue personnel. A fire rescue underwater rescue device (application number CN119659892A) requires a switch button to be submerged in water to switch the air pump's operating mode. However, the underwater environment is complex, with water currents and corrosion. The switch button is prone to poor contact and short circuits underwater, potentially leading to leakage or malfunction. This could not only cause the device to fail, delaying rescue efforts, but also threaten the lives of rescuers and trapped individuals. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide an underwater rescue device for fire rescue, which can improve the safety of the device.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] An underwater rescue device for firefighting includes: an air pump, an air supply pipe, a first one-way valve, a fluid supply pipe, and a belt; one end of the air supply pipe is connected to the air pump; the first one-way valve includes a valve body, a valve disc, a reset elastic element, an opening / closing rod, and a knob; the air inlet, valve cavity, and air outlet of the valve body are sequentially connected along the air supply direction; the air inlet is connected to the other end of the air supply pipe, and the valve disc and the elastic reset element are both disposed within the valve cavity; the two ends of the reset elastic element respectively abut against the valve body and the valve disc, so that the valve disc has a tendency to block the air outlet; the valve disc has a threaded air passage hole, and the opening / closing rod has an external thread, the external thread engaging with the threaded opening / closing rod; the knob... The knob is movably fitted onto the valve body to allow circumferential rotation around the opening / closing lever. The knob has an axial guide rail extending along the axial direction of the opening / closing lever. The opening / closing lever is connected to a slider, which slides along the axial guide rail to drive the opening / closing lever to rotate with the knob. One end of the fluid supply pipe is connected to the air outlet. The fluid supply pipe has a water inlet connected to a sealing cap. The waist belt is for the user to wear, and multiple fluid containers are spaced circumferentially on its outer side. All fluid containers are connected to the fluid supply pipe. Each fluid container is equipped with a second one-way valve, the flow direction of which is from the inside of the fluid container to the outside.

[0007] Furthermore, the air pump is a bidirectional air pump.

[0008] Furthermore, the valve disc contains a magnetic attraction element, and the air outlet is provided with a magnet, which is attracted to the magnetic attraction element.

[0009] Furthermore, the reset elastic element is a telescopic spring.

[0010] Furthermore, a connecting plate is provided inside the valve cavity, and a guide rod is movably inserted through the connecting plate, with the telescopic spring sleeved on the outside of the guide rod.

[0011] Furthermore, the sealing cap is equipped with an anti-detachment ring.

[0012] Furthermore, the knob is provided with anti-slip grooves on its periphery.

[0013] Furthermore, both ends of the belt are provided with Velcro, and the Velcro at both ends are hooked together.

[0014] Furthermore, the air pump is mounted on the float plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. The first one-way valve includes a valve body, a valve disc, a reset elastic element, an opening / closing rod, and a knob; the air inlet of the valve body, the valve cavity of the valve body, and the air outlet of the valve body are sequentially connected along the air supply direction; the air inlet is connected to the other end of the air supply pipe, and the valve disc and the elastic reset element are both disposed in the valve cavity; the two ends of the reset elastic element respectively abut against the valve body and the valve disc, so that the valve disc has a tendency to block the air outlet; the valve disc has a threaded air passage hole, and the opening / closing rod has an external thread, which is threadedly engaged with the opening / closing rod; the knob is movably sleeved with the valve body so as to be able to rotate around the circumference of the opening / closing rod. With this design, when the wearer needs to quickly float out of the water, only the knob needs to be operated to drive the opening / closing rod to open the air passage hole, and then the air pump can inflate the fluid container and discharge the water in the fluid container, thereby achieving rapid floating out of the water. Compared with the prior art, this invention is a purely mechanical structure, which improves the operational safety of the device.

[0017] 2. The air inlet, valve chamber, and air outlet of the valve body are sequentially connected along the air supply direction; the knob is provided with an axial guide rail, which extends along the axial direction of the opening and closing rod. The opening and closing rod is connected to a slider, which slides in cooperation with the axial guide rail to drive the opening and closing rod to rotate with the knob; this design allows the slider of the opening and closing rod to move along the axial guide rail in the direction of airflow when the knob is operated, allowing the wearer to easily complete the operation in water, improving the response speed and further enhancing the safety of the device.

[0018] 3. One end of the fluid supply pipe is connected to the air outlet; the fluid supply pipe has a water inlet, and multiple fluid containers are connected to the fluid supply pipe; each fluid container is equipped with a second one-way valve. This configuration allows water to enter through the inlet when the wearer needs to quickly descend for rescue, rapidly expelling air from the fluid supply pipe and fluid containers through the second one-way valve. This enables the wearer to quickly descend and complete the rescue, accelerating the rescue time and further improving the safety of the device.

[0019] 4. One end of the fluid supply tube is connected to the air outlet; multiple fluid containers are all connected to the fluid supply tube; each fluid container is equipped with a second one-way valve, the flow direction of the second one-way valve being from the inside of the fluid container to the outside of the fluid container. This design allows the fluid supply tube to quickly inflate each fluid container when the wearer needs to surface rapidly. Water from each fluid container can then be discharged through the second one-way valve. Furthermore, the flow direction of the second one-way valve, from the inside of the fluid container to the outside of the fluid container, ensures that water will not flow back into the fluid container from the second one-way valve, guaranteeing that the wearer can surface stably and quickly, further improving the safety of the device.

[0020] 5. Compared with the prior art, the inlet and second one-way valve of the present invention are both purely mechanical structures, which solves the problems of leakage or failure in the prior art from the source and ensures the safety of rescue work. In addition, the air pump of the present invention is in a normally open state, that is, there is no need for the diver to tell the teammate to turn on the air pump. Compared with the prior art, which requires underwater communication equipment, and the communication equipment is at risk of failure underwater, the air pump of the present invention can solve this problem and ensure the safety of the device. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an underwater rescue device for fire fighting and rescue according to the present invention;

[0022] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0023] Figure 3 for Figure 1 A cross-sectional view of the first check valve, which is connected to the gas supply pipe and the fluid distribution pipe.

[0024] Figure 4 for Figure 3 Enlarged view of point B in the middle.

[0025] In the diagram: 1. Air pump; 2. Air supply pipe; 3. First check valve; 31. Valve body; 311. Connecting plate; 312. Guide rod; 32. Valve disc; 321. Threaded air passage hole; 33. Reset elastic element; 34. Opening and closing rod; 341. Slider; 35. Knob; 351. Axial guide rail; 352. Anti-slip groove; 4. Fluid supply pipe; 41. Water inlet; 5. Sealing cap; 51. Anti-detachment ring; 6. Waist belt; 61. Fluid container; 611. Second check valve; 62. Velcro; 63. Anti-slip strip; 7. Float disc. Detailed Implementation

[0026] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0027] It should be noted that when an element is described as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is described as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] See Figures 1-4A preferred embodiment of the present invention provides an underwater rescue device for firefighting and rescue, comprising: an air pump 1, an air supply pipe 2, a first one-way valve 3, a fluid supply pipe 4, and a belt 6; one end of the air supply pipe 2 is connected to the air pump 1; the first one-way valve 3 includes a valve body 31, a valve disc 32, a reset elastic element 33, an opening and closing rod 34, and a knob 35; the air inlet, the valve cavity, and the air outlet of the valve body 31 are sequentially connected along the air supply direction; the air inlet is connected to the other end of the air supply pipe 2; the valve disc 32 and the elastic reset element are both disposed in the valve cavity; the two ends of the reset elastic element 33 respectively abut against the valve body 31 and the valve disc 32, so that the valve disc 32 has a tendency to block the air outlet; the valve disc 32 has a threaded air passage hole 321, and the opening and closing rod 34 has an external thread, the external thread being threadedly engaged with the opening and closing rod 34; the knob The knob 35 is movably sleeved with the valve body 31 so as to be able to rotate circumferentially around the opening and closing rod 34. The knob 35 has an axial guide rail 351, which extends axially along the opening and closing rod 34. The opening and closing rod 34 is connected to a slider 341, which slides with the axial guide rail 351 to drive the opening and closing rod 34 to rotate with the knob 35. One end of the fluid supply pipe 4 is connected to the air outlet. The fluid supply pipe 4 has a water inlet 41, which is connected to a sealing cap 5. The waist belt 6 is for the user to wear. Multiple fluid containers 61 are arranged circumferentially at intervals on the outer side of the waist belt 6. All of the multiple fluid containers 61 are connected to the fluid supply pipe 4. Each fluid container 61 is provided with a second one-way valve 611, and the flow direction of the second one-way valve 611 is from the inside of the fluid container 61 to the outside of the fluid container 61.

[0030] In actual underwater rescue operations, the personnel first wrap the waist belt 6, which contains multiple fluid containers 61, around their waist and abdomen, adjusting the tightness of the belt 6 to ensure that the fluid containers 61 are evenly distributed across the abdominal area. At this time, special attention must be paid to ensuring that the inlet 41 of the fluid supply pipe 4 is open. Simultaneously, check and confirm that the first one-way valve 3 and the second one-way valve 611 are both initially closed (to prevent premature air or water leakage). Ensure the air supply pipe 2 is securely connected to the air pump 1, then turn on the air pump 1 and keep it in inflation mode (to prepare for subsequent ascent, without needing to switch modes midway). After completing the donning and initial setup of the device, the personnel enter the water (if the air pump 1 is external, a flotation device can be used to keep it afloat on the surface, ensuring the length of the air supply pipe 2 meets the requirements for underwater operations). There are two methods for water intake to facilitate descent. The first is to fill the container with water before descent: Before entering the water, water is introduced through the inlet 41 of the fluid supply pipe 4 via an external water source or manual injection, allowing water to flow into each fluid container 61 until the container is full. During this process, the second one-way valve 611 must be kept closed to prevent water from flowing back out of the container and to ensure sufficient water volume to reduce buoyancy. The second method is to fill the container after entering the water: After the person enters the water, water pressure allows water to flow naturally from the inlet 41 of the fluid supply pipe 4, and then be distributed to each fluid container 61 through the fluid supply pipe 4. During this process, the second one-way valve 611 can be opened (to help balance the pressure inside and outside the container and accelerate water intake). Once the fluid container 61 is completely filled with water, the second one-way valve 611 can be closed as needed (to prevent accidental water leakage during descent that could cause changes in buoyancy). Regardless of the water intake method used, once the fluid container 61 is filled with water, its buoyancy decreases significantly, allowing the personnel wearing the equipment to descend stably using their own movements or auxiliary equipment to conduct underwater rescue operations. When the personnel need to surface after completing the underwater rescue operation, there is no need to adjust the air pump 1 mode (it is always inflated); they only need to immediately operate the knob 35 of the first one-way valve 3. The knob 35, through the cooperation of the axial guide rail 351 and the slider 341, drives the opening and closing rod 34 to move, thereby opening the threaded air passage 321 on the valve disc 32, switching the first one-way valve 3 from the closed state to the venting state. At this time, the high-pressure gas generated by the air pump 1 in the inflating mode is continuously delivered along the air supply pipe 2 to the air inlet of the first one-way valve 3, passes through the valve chamber of the valve body 31 and the opened threaded air passage 321 (i.e., the air outlet channel) into the fluid distribution pipe 4, and then is quickly distributed to each fluid container 61 through the fluid distribution pipe 4. After the high-pressure gas enters the fluid container 61, it compresses the water inside the container, causing the water to flow rapidly out of the second one-way valve 611 (at this time, it must be ensured that the second one-way valve 611 is in the open state; if it was closed before, it must be opened first) into the external water body. As the water inside the container is continuously discharged, the high-pressure gas gradually fills the fluid container 61, and the buoyancy of the container increases significantly.Since the fluid containers 61 are all located on the wearer's abdomen, the increased buoyancy will cause the waist belt 6 and the wearer to float upwards. During the ascent, the buoyancy of the abdomen will always provide upward support to the wearer's upper body, keeping them in a face-up position and effectively preventing their mouth and nose from being submerged in water, thus reducing the risk of suffocation. After the wearer successfully floats to the surface, the air pump 1 can be turned off as needed, and the knob 35 of the first one-way valve 3 can be turned to the initial position. This will cause the valve disc 32 to re-seal the threaded air passage 321 under the action of the reset elastic element 33, thus closing the first one-way valve 3 to stop the air supply. Then, the inlet 41 of the fluid supply pipe 4 can be closed (and the sealing cap 5 can be placed on), the waist belt 6 can be untied to complete the disassembly of the device, and the device can be cleaned (removing residual water from the fluid supply pipe 4 and containers) and inspected to ensure good performance for the next use.

[0031] Obviously, the first one-way valve 3 includes a valve body 31, a valve disc 32, a reset elastic element 33, an opening / closing rod 34, and a knob 35; the air inlet, valve cavity, and air outlet of the valve body 31 are sequentially connected along the air supply direction; the air inlet is connected to the other end of the air supply pipe 2; the valve disc 32 and the elastic reset element are both located in the valve cavity; the two ends of the reset elastic element 33 abut against the valve body 31 and the valve disc 32 respectively, so that the valve disc 32 has a tendency to block the air outlet; the valve disc 32 has a threaded air passage hole 321, and the opening / closing rod 34... The closing rod 34 is provided with an external thread, which is threadedly engaged with the opening and closing rod 34; the knob 35 is movably sleeved with the valve body 31 so as to be able to rotate around the opening and closing rod 34. With this design, when the wearer needs to quickly float out of the water, the opening and closing rod 34 can be opened by simply operating the knob 35, thereby driving the opening and closing rod 34 to open the air passage. Then the air pump 1 can inflate the fluid container 61 and discharge the water in the fluid container 61, thereby achieving rapid floating to the surface. Compared with the prior art, this design is a purely mechanical mechanism, which is safer than electrical and improves the operational safety of the device. The air inlet, valve chamber, and air outlet of the valve body 31 are sequentially connected along the air supply direction. The knob 35 has an axial guide rail 351 extending axially along the opening / closing rod 34. The opening / closing rod 34 is connected to a slider 341, which slides in conjunction with the axial guide rail 351 to drive the opening / closing rod 34 to rotate with the knob 35. This design allows the slider 341 of the opening / closing rod 34 to move along the axial guide rail 351 in the direction of airflow when the knob 35 is operated, improving the response speed and further enhancing the safety of the device. One end of the fluid supply pipe 4 is connected to the air outlet. The fluid supply pipe 4 has a water inlet 41, and multiple fluid containers 61 are connected to the fluid supply pipe 4. Each fluid container 61 is equipped with a second one-way valve 611. This design allows water to enter through the inlet 41 when the wearer needs to quickly dive for rescue, while the air in the fluid supply pipe 4 and fluid container 61 is rapidly discharged through the second one-way valve 611. This enables the wearer to quickly dive and complete the rescue, accelerating the rescue time and further improving the safety of the device. One end of the fluid supply pipe 4 is connected to the air outlet; multiple fluid containers 61 are all connected to the fluid supply pipe 4; each fluid container 61 is equipped with a second one-way valve 611, with the flow direction of the second one-way valve 611 from the inside of the fluid container 61 to the outside.With this design, when the wearer needs to float quickly to the surface, the fluid supply tube 4 can quickly inflate each fluid container 61, and then the water in each fluid container 61 can be discharged through the second one-way valve 611. Moreover, the flow direction of the second one-way valve is from the inside of the fluid container 61 to the outside of the fluid container 61, which can ensure that water will not flow back into the fluid container 61 from the second one-way valve 611, ensuring that the wearer can float to the surface stably and quickly, further improving the safety of the device.

[0032] Preferably, in this embodiment, the air pump 1 is a bidirectional air pump 1. This configuration allows the bidirectional air pump 1 to perform both inflation and deflation operations, eliminating the need for additional deflation equipment. When diving is required, the deflation function of the bidirectional air pump 1 can quickly extract air from the fluid container 61, allowing water to smoothly enter the container; when surfacing is required, switching to inflation mode allows gas to be injected into the container to expel water, simplifying the overall structure and operation of the device and improving operational flexibility. Compared to a unidirectional air pump 1, which can only inflate and relies on natural water intake or drainage, the bidirectional air pump 1, through active deflation and inflation, can significantly accelerate the gas-liquid replacement efficiency within the fluid container 61. During the diving phase, active deflation can quickly reduce the air pressure inside the container, accelerating the water intake process; during the surfacing phase, active inflation can quickly increase the air pressure inside the container, pushing water out through the second one-way valve 611, enabling the wearer to switch between diving and surfacing states more quickly, buying valuable time for rescue in emergency situations.

[0033] Preferably, in this embodiment, the valve disc 32 contains a magnetic element, and a magnet is provided at the air outlet. The magnet engages with the magnetic element. This arrangement allows the magnetic element and magnet to work together with the elastic force of the reset elastic element 33, creating a dual force that further enhances the sealing effect of the valve disc 32 on the air outlet. Especially in high-pressure underwater environments, external water pressure may interfere with the sealing state of the valve disc 32. The magnetic force can help counteract this interference, ensuring a tighter seal at the air outlet in non-ventilated conditions, reducing the possibility of gas leakage, and thus enhancing sealing reliability. The magnetic engagement provides additional protection for the positioning of the valve disc 32 within the valve cavity, preventing displacement of the valve disc 32 due to device shaking or water flow impact during underwater operations. This ensures that the valve disc 32 is always aligned with the air outlet, maintaining the stability and consistency of the sealing structure, thereby guaranteeing the reliable operation of the first one-way valve 3 under complex operating conditions.

[0034] Preferably, in this embodiment, the reset elastic element 33 is a telescopic spring. The telescopic spring can generate a uniform and continuous elastic force through its own deformation. When its two ends abut against the valve body 31 and the valve disc 32 respectively, it can always provide a stable sealing tendency for the valve disc 32, ensuring a tight fit between the valve disc 32 and the air outlet in the non-ventilated state, thus enhancing sealing reliability. Its elastic characteristics are stable and unaffected by significant changes in underwater ambient temperature and pressure, maintaining a consistent sealing effect under various working conditions. The deformation of the telescopic spring is linearly related to the force applied. When the knob 35 drives the opening / closing rod 34 to push the valve disc 32, the spring compression is uniformly adjusted according to the thrust, making the opening process of the valve disc 32 smooth and controllable. When it is necessary to close the air passage, the spring can quickly release its elastic potential energy, pushing the valve disc 32 to quickly reset and block the air outlet, improving the response speed of air passage opening and closing, thereby ensuring timely operation during rescue operations.

[0035] Preferably, in this embodiment, a connecting plate 311 is provided inside the valve cavity, and a guide rod 312 is movably inserted through the connecting plate 311. The telescopic spring is sleeved on the outside of the guide rod 312. Lateral offset or torsional deformation occurs during the extension and retraction process. When the opening and closing rod 34 pushes the valve disc 32 to compress the spring, or when the spring returns to its original position and pushes the valve disc 32, the guide rod 312 can constrain the spring to always deform axially, ensuring that the direction of the elastic force is stably pointing towards the contact direction between the valve disc 32 and the air outlet, maintaining the effectiveness of the sealing force, avoiding sealing failure caused by spring misalignment, and thus ensuring the stability of the telescopic spring deformation. The cooperation between the connecting plate 311 and the guide rod 312 forms a stable guiding structure. The valve disc 32 achieves axial movement through the sliding cooperation between the connecting plate 311 and the guide rod 312, reducing the risk of the valve disc 32 shaking or getting stuck in the valve cavity. Especially in underwater high-pressure environments or when the device is impacted by water flow, this guiding effect can ensure that the valve disc 32 is accurately aligned with the air outlet, ensuring uniform contact of the sealing surface, and further enhancing the sealing reliability of the first one-way valve 3.

[0036] Preferably, in this embodiment, the sealing cap 5 is provided with an anti-detachment ring 51. The anti-detachment ring 51 can form a flexible or rigid connection constraint between the sealing cap 5 and the fluid supply pipe 4. Even if the sealing cap 5 is subjected to water flow impact, device shaking, or accidental contact during underwater operations, the sealing cap 5 will not completely detach from the inlet 41. This prevents the inlet 41 from remaining open in non-operational states due to the loss of the sealing cap 5, preventing unnecessary water from entering the fluid supply pipe 4 and fluid container 61, and ensuring the buoyancy stability of the device during submersion. In an emergency, if the sealing cap 5 is accidentally loosened, the anti-detachment ring 51 can limit its detachment range, preventing the sealing cap 5 from becoming an underwater floating foreign object that interferes with rescue operations, or from being washed away by water flow and potentially affecting other equipment, thus improving the safety of the device in complex underwater environments.

[0037] Preferably, in this embodiment, the knob 35 is provided with an anti-slip groove 352 on its periphery. In an underwater environment, the wearer's hands may be difficult to grip steadily due to moisture, wearing protective gloves, or water flow impact. The anti-slip groove 352 increases the friction between the knob 35 surface and the hand (or glove), ensuring that the wearer can apply effective force to the knob 35 even in slippery conditions, avoiding operational failure due to slippage, and ensuring the accurate opening and closing control of the first one-way valve 3. In the underwater environment of fire rescue, there may be impurities such as mud, sand, and oil, and the surface of the knob 35 is prone to dirt adhesion, leading to slippage. The groove structure of the anti-slip groove 352 can reduce the impact of dirt on friction, and at the same time, the groove can accommodate some impurities, reducing the risk of grip failure due to surface contamination, and ensuring the operability of the knob 35 in complex working conditions.

[0038] Preferably, in this embodiment, both ends of the belt 6 are provided with Velcro 62, which are Velcro fastened together. The fastening and unfastening of the fasteners is simple and convenient; the wearer can quickly secure or detach the belt 6 using only hand movements without the need for tools. In emergency rescue scenarios, this rapid operation significantly shortens device preparation time, allowing rescuers to quickly engage in underwater operations or quickly remove the device after a rescue, improving overall rescue efficiency. The Velcro 62 has a certain tensile strength after being fastened and maintains good adhesive strength even in humid environments, making it less prone to accidental detachment due to water flow or body movement. Compared to structures like buckles, the Velcro 62 will not experience jamming or failure due to underwater sediment, ensuring the belt 6 remains stable during underwater operations and guaranteeing the positional stability of components such as the fluid container 61. The Velcro 62's attachment position is flexibly adjustable, allowing for free adjustment of the waist belt 6's tightness according to different wearers' waist and abdominal dimensions. This ensures that the waist belt 6 fits the body snugly to prevent shifting, without being too tight and hindering underwater activities or too loose and causing the device to wobble. This universal design expands the device's applicability to a wider range of people, eliminating the need for custom-made waist belts 6 for different body types.

[0039] Preferably, in this embodiment, the inner side of the waist belt 6 is provided with multiple anti-slip strips 63 spaced apart circumferentially. During underwater operations, the wearer's body will shift due to water flow impact and limb movements, and the friction between the waist belt 6 and clothing or skin is easily reduced due to moisture. The anti-slip grooves 352 significantly improve the contact friction with skin or clothing by increasing the texture of the inner side of the waist belt 6, effectively resisting external forces underwater and preventing the waist belt 6 from rotating, sliding, or shifting at the waist and abdomen, ensuring that the fluid container 61 is always evenly distributed in the abdominal area, providing a stable structural foundation for subsequent buoyancy adjustment (diving or surfacing). The spaced design of the anti-slip grooves 352 retains friction while avoiding excessive pressure on the skin from a full-plane anti-slip structure. When personnel are performing dynamic operations such as bending over and turning underwater, the spaced anti-slip grooves 352 can provide some room for the skin to move, reducing the friction and constriction of the waist belt 6 on the waist and abdomen. At the same time, the groove structure can help disperse the local pressure of the waist belt 6, avoiding marks or discomfort caused by prolonged wear, and improving the tolerance of rescue personnel during underwater operations.

[0040] Preferably, in this embodiment, the air pump 1 is mounted on the float plate 7. The float plate 7, relying on its own buoyancy, keeps the air pump 1 always floating on the water surface, effectively isolating the air pump 1 from direct contact with the underwater environment and preventing water from entering the air pump 1 and causing short circuits, component corrosion, and other malfunctions. Especially for air pumps 1 that need to operate continuously (such as those always in inflation mode), this method avoids the corrosion of the air pump 1's power system by the high pressure and humid environment underwater, ensuring the air pump 1 outputs gas stably for a long time, providing reliable power support for buoyancy adjustment. The float plate, while floating on the water surface, moves slightly with the current but its overall position remains relatively fixed, providing a stable platform for the air pump 1. This stability prevents the air pump 1 from being excessively stretched or entangled in underwater obstacles (such as reefs or aquatic plants) due to random floating, or from causing the underwater one-way valve or fluid distribution pipe 4 to shake due to displacement of the air pump 1, ensuring unobstructed airflow and not interfering with the underwater operations of the wearer, further improving the safety and reliability of the device.

[0041] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," 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 this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0042] 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 at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0043] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An underwater rescue device for firefighting and rescue, characterized in that, include: Air pump (1); Gas delivery pipe (2), one end of which is connected to the gas pump (1); The first one-way valve (3) includes a valve body (31), a valve disc (32), a reset elastic element (33), an opening and closing rod (34), and a knob (35); the air inlet of the valve body (31), the valve cavity of the valve body (31), and the air outlet of the valve body (31) are connected sequentially along the air supply direction; the air inlet is connected to the other end of the air supply pipe (2), and the valve disc (32) and the elastic reset element are both located in the valve cavity; the two ends of the reset elastic element (33) abut against the valve body (31) and the valve disc (32) respectively, so that the valve disc (32) has a tendency to block the air outlet; the valve The valve (32) has a threaded air passage hole (321), and the opening and closing rod (34) has an external thread that is threadedly engaged with the opening and closing rod (34). The knob (35) is movably sleeved with the valve body (31) so that it can rotate around the circumference of the opening and closing rod (34). The knob (35) has an axial guide rail (351) that extends along the axial direction of the opening and closing rod (34). The opening and closing rod (34) is connected to a slider (341), and the slider (341) slides with the axial guide rail (351) to drive the opening and closing rod (34) to rotate with the knob (35). A fluid supply pipe (4) is provided, one end of which is connected to the air outlet; the fluid supply pipe (4) is provided with a water inlet (41), and the water inlet (41) is connected to a sealing cap (5); A belt (6) is provided for a user to wear. Multiple fluid containers (61) are arranged circumferentially on the outer side of the belt (6). The multiple fluid containers (61) are all connected to the fluid supply pipe (4). Each fluid container (61) is provided with a second one-way valve (611). The flow direction of the second one-way valve (611) is from the inside of the fluid container (61) to the outside of the fluid container (61).

2. The underwater rescue device for firefighting and rescue according to claim 1, characterized in that, The air pump (1) is a bidirectional air pump.

3. The underwater rescue device for firefighting and rescue according to claim 1, characterized in that, The valve disc (32) contains a magnetic element, and the air outlet is provided with a magnet that attracts the magnetic element.

4. The underwater rescue device for firefighting and rescue according to claim 1, characterized in that, The reset elastic element (33) is a telescopic spring.

5. The underwater rescue device for firefighting and rescue according to claim 4, characterized in that, The valve cavity is provided with a connecting plate (311), and a guide rod (312) is movably passed through the connecting plate (311). The telescopic spring is sleeved on the outside of the guide rod (312).

6. The underwater rescue device for firefighting and rescue according to claim 1, characterized in that, The sealing cap (5) is equipped with an anti-detachment ring (51).

7. The underwater rescue device for firefighting and rescue according to claim 1, characterized in that, The knob (35) is provided with anti-slip grooves (352) on its periphery.

8. The underwater rescue device for firefighting and rescue according to claim 1, characterized in that, The belt (6) has Velcro (62) at both ends, and the Velcro (62) at both ends are hooked together.

9. The underwater rescue device for firefighting and rescue according to claim 1, characterized in that, The inner side of the belt (6) is provided with a plurality of anti-slip strips (63) spaced apart in a circumferential manner.

10. The underwater rescue device for firefighting and rescue according to claim 1, characterized in that, The air pump (1) is installed on the float plate (7).

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