Fire extinguishing nozzle and fire extinguishing device

Abstract

The utility model discloses a fire extinguishing nozzle and fire extinguishing device belong to fire fighting equipment technical field, solved the existing vehicle bottom fire extinguishing device angle of adjustment is restricted, and the single or low fluid efficiency of injection mode technical problem. This fire extinguishing nozzle includes the nozzle main part, liquid inlet unit and sprays liquid unit, wherein the nozzle main part is equipped with universal adjusting ball hinge and realizes multi -angle injection, and liquid inlet unit adopts the ball hinge curved surface hole design of five -hole symmetry distribution to optimize fluid distribution, and sprays liquid unit and includes the composite injection mode formed by direct -current sprays liquid hole and cyclone sprays liquid hole, and the fire extinguishing device includes a plurality of fire extinguishing nozzle, liquid conveying pipeline, ball hinge mounting seat and fire extinguishing pipeline, and realizes synchronous unfolding and folding through the flexible connecting pipe. The utility model discloses through the innovative hydraulic drive structure and the multi -hole liquid inlet design, has realized fire extinguishing nozzle wide -angle adjustment, and direct -current and cyclone form radial coverage, has improved fire extinguishing efficiency and operation convenient, is applicable to the fire fighting of the narrow space such as vehicle bottom.

Description

Technical Field

[0001] This utility model relates to the field of fire extinguishing equipment technology, and in particular to a fire extinguishing nozzle and fire extinguishing device, which is suitable for multi-angle fire extinguishing operations in confined spaces such as under vehicles. Background Technology

[0002] Fire extinguishing devices targeting vehicle chassis fires generally suffer from structural design deficiencies. Traditional fire nozzles often employ a fixed single-orifice spray structure, limiting the spray angle to a maximum adjustment range typically no more than ±45°, making it difficult to effectively cover fire sources within the complex structure of the chassis. Furthermore, the single-channel liquid inlet design results in excessive fluid resistance and significant pressure loss, severely impacting the extinguishing agent's spray distance and coverage. Existing technologies also lack dynamic adjustment capabilities, failing to adjust the spray direction in real time according to changes in fire intensity, leading to low extinguishing agent utilization.

[0003] Existing under-vehicle fire extinguishing devices have significant structural design flaws. Most products employ a rigid connection structure, resulting in a bulky deployment that hinders vehicle maneuverability and makes rapid deployment difficult. While some improved products enhance coverage by increasing the number of nozzles, they fail to address fundamental issues such as limited spray patterns and inflexible adjustments. Particularly when facing fires hidden under the chassis, the effectiveness of traditional fire extinguishing devices is often significantly reduced, hindering rapid and effective fire suppression. Therefore, there is an urgent need to develop a fire extinguishing device that combines multi-angle adjustment, rapid response, and a compact structure. Utility Model Content

[0004] Based on the above analysis, the present invention aims to provide a fire extinguishing spray device to solve the problems of existing vehicle under-vehicle fire extinguishing devices having a single deployment angle, lack of dynamic adjustment, large storage volume, and complex operation.

[0005] The objective of this utility model is mainly achieved through the following technical solutions: A fire extinguishing nozzle includes: a nozzle body, a liquid inlet unit, and a liquid spraying unit.

[0006] The nozzle body includes a universal adjustable ball joint; The liquid inlet unit includes a ball joint curved hole and a swirl inlet hole. The ball joint curved hole is located on the universal adjustment ball joint. The distribution of extinguishing liquid is optimized by the symmetrically distributed curved holes. The swirl inlet hole guides part of the extinguishing liquid to form a rotating flow, thereby increasing the spray range. The spraying unit includes a direct spray nozzle and a swirling spray nozzle. The direct spray nozzle forms a stable directional jet, while the swirling spray nozzle generates a diffusion jet through a spirally arranged swirling channel, forming a composite fire extinguishing mode with the direct spray.

[0007] Furthermore, the ball joint curved face includes a first curved face, a second curved face, a third curved face, a fourth curved face, and a fifth curved face; the fifth curved face is located at the bottom of the universal adjusting ball joint of the nozzle body, and the first curved face, the second curved face, the third curved face, and the fourth curved face are symmetrical about the center of the fifth curved face; the first curved face, the second curved face, the third curved face, and the fourth curved face are distributed at equal angles of 90° with the fifth curved face as the center, forming a uniform liquid inlet channel layout.

[0008] Furthermore, the inlet end of the ball-joint curved surface has a tapered structure, and the outlet end has a tapered structure.

[0009] Furthermore, the swirling spray hole is provided with a swirling channel arranged in a spiral with a deflection angle of 30°.

[0010] Furthermore, the nozzle body also includes a connecting pipe and an outer wall of the nozzle. The universal adjusting ball joint allows the nozzle to be freely adjusted at multiple angles. The universal adjusting ball joint and the outer wall of the nozzle are connected by the connecting pipe. The outer wall of the nozzle constitutes the external protective structure of the nozzle.

[0011] Furthermore, the DC spray hole adopts a cylindrical straight-through structure with the same diameter as the connecting pipe.

[0012] A fire extinguishing device includes: the fire extinguishing nozzle; a fire extinguishing device body, wherein the fire extinguishing device body is provided with a liquid delivery pipe, a liquid delivery hole in the fire extinguishing pipe wall, a fire extinguishing pipe, and a ball joint mounting seat; The infusion pipeline serves as the main delivery channel, and infusion holes are distributed along the side wall of the fire extinguishing pipe to distribute the fire extinguishing liquid to each fire extinguishing pipeline.

[0013] Furthermore, there are multiple fire extinguishing pipes, which are interconnected by flexible connectors.

[0014] Furthermore, the fire extinguishing pipeline is equipped with ball joint mounting seats, each ball joint mounting seat being used to fix a fire extinguishing nozzle.

[0015] Furthermore, the inner diameter of the ball joint mounting base is greater than the maximum diameter of the universal adjusting ball joint, and the diameter of the limiting hole of the ball joint mounting base is less than the maximum diameter of the universal adjusting ball joint.

[0016] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects: (1) This utility model enables the fire extinguishing nozzle to achieve a large angle adjustment of ±90° through the innovative five-hole symmetrical distribution ball hinge curved hole design and hydraulic drive structure, which far exceeds the adjustment limit of ±45° of the traditional fire extinguishing nozzle. Combined with the composite spray mode of DC spray hole and swirl spray hole, it forms a radial coverage layout, which increases the coverage area of ​​the fire extinguishing agent and significantly improves the fire extinguishing efficiency of fire sources in complex spaces under the vehicle.

[0017] (2) This utility model adopts a flexible connecting pipe and a multi-nozzle collaborative design, which enables the fire extinguishing device to quickly deploy to form a fire extinguishing network and shrink in size after being retracted. It does not affect the daily passability of the vehicle and can achieve rapid emergency response. The fully hydraulic drive design does not require an external power source or a complex control system. It can increase the spray range by relying solely on the fluid dynamics characteristics. The operation is simple and reliable.

[0018] (3) This utility model ensures the flexibility of nozzle rotation through the innovative structural design of the ball joint mounting seat, while preventing it from falling off. It maintains stable operation under complex working conditions such as vehicle bumps. The multi-nozzle collaborative system achieves uniform distribution of extinguishing agent. The failure of a single nozzle does not affect the overall fire extinguishing effect. The system reliability is significantly improved, and it is particularly suitable for the fire extinguishing needs of high temperature and narrow spaces such as automobile chassis and battery compartments.

[0019] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages will become apparent from the description or be learned by practicing this invention. The objectives and other advantages of this invention can be realized and obtained from the details specifically pointed out in the text and accompanying drawings. Attached Figure Description

[0020] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0021] Figure 1a This is a schematic diagram of the structure of the fire extinguishing nozzle in Embodiment 1 of this utility model; Figure 1b This is a schematic diagram of the structure of the other side of the fire extinguishing nozzle in Embodiment 1 of this utility model; Figure 2a This is a schematic diagram of the main structure of the fire extinguishing nozzle according to Embodiment 1 of this utility model; Figure 2b This is Embodiment 1 of the present utility model. Figure 2a Sectional view along line AA; Figure 2c This is Embodiment 1 of the present utility model. Figure 2b Enlarged view of part B in the middle; Figure 3 This is a schematic diagram of the structure of a fire extinguishing nozzle without the outer wall of the nozzle in Embodiment 1 of this utility model; Figure 4 This is a schematic diagram of the overall structure of the fire extinguishing device according to Embodiment 2 of this utility model; Figure 5 This is a schematic diagram of the fire extinguishing pipeline structure of the fire extinguishing device according to Embodiment 2 of this utility model; Figure 6This is a schematic diagram of the internal structure of the fire extinguishing device according to Embodiment 2 of this utility model.

[0022] Figure label: 1- Nozzle body; 11- Universal adjusting ball joint; 12- Connecting pipe; 13- Nozzle outer wall; 2- Liquid inlet unit; 21- Ball joint curved hole; 211- First curved hole; 212- Second curved hole; 213- Third curved hole; 214- Fourth curved hole; 215- Fifth curved hole; 22- Swirl liquid inlet hole; 221- First swirl inlet hole; 222- Second swirl inlet hole; 23- Inlet end; 24- Outlet end; 3- Spraying unit; 31- Straight-stream spray hole; 32- Swirl spray hole; 4- Fire extinguishing device body; 41- Liquid delivery pipe; 42- Fire extinguishing pipe wall liquid delivery hole; 43- Fire extinguishing pipe; 431- First fire extinguishing pipe; 432- Second fire extinguishing pipe; 433- Third fire extinguishing pipe; 44- Ball joint mounting base; 45- Flexible connecting pipe. Detailed Implementation

[0023] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0024] Example 1 A specific embodiment of this utility model discloses a fire extinguishing nozzle, such as... Figure 1a , Figure 1b and Figure 2a As shown, the fire extinguishing nozzle includes a nozzle body 1, a liquid inlet unit 2, and a liquid spraying unit 3. The nozzle body 1 provides spatial positioning and multi-angle adjustment functions for the fire extinguishing device, the liquid inlet unit 2 is responsible for the distribution and flow control of the fire extinguishing liquid, and the liquid spraying unit 3 realizes the precise spraying and diffusion coverage of the fire extinguishing liquid, together ensuring the maximization of the fire extinguishing effect.

[0025] The main body of the nozzle 1 includes a universal adjusting ball joint 11, a connecting pipe 12, and an outer wall 13 of the nozzle. The fire extinguishing nozzle achieves multi-angle free adjustment of the nozzle through the universal adjusting ball joint 11, and the outer wall 13 of the nozzle constitutes the external protective structure of the nozzle. The universal adjusting ball joint 11 and the outer wall 13 of the nozzle are connected by the connecting pipe 12.

[0026] The liquid inlet unit 2 includes a ball joint curved surface 21. Specifically, the ball joint curved surface 21 includes a first curved surface 211, a second curved surface 212, a third curved surface 213, a fourth curved surface 214, and a fifth curved surface 215. Specifically, the fifth curved surface 215 is located at the bottom. The first curved surface 211, the second curved surface 212, the third curved surface 213, and the fourth curved surface 214 are symmetrical about the center of the fifth curved surface 215, and the centers of the first curved surface 211, the second curved surface 212, the third curved surface 213, and the fourth curved surface 214 are distributed at equal angles of 90°.

[0027] Unlike existing technologies that only have a single inlet hole at the bottom of the universal adjusting ball joint 11, this embodiment 1 has five curved holes (211-215) evenly distributed on the universal adjusting ball joint 11. The single-hole design of existing technologies causes the extinguishing liquid to enter from the bottom in a concentrated manner, resulting in high fluid resistance and preventing the use of hydrodynamics to assist the nozzle rotation. The symmetrical multi-hole design of the first to fifth curved holes (211-215) in this embodiment allows the extinguishing liquid to enter the ball joint cavity simultaneously from multiple directions, forming a rotating vortex within the cavity. When the nozzle angle needs to be adjusted, the inlet flow rate at different holes is used to drive the ball joint rotation using the impact force of the incoming fluid: for example, increasing the flow rate at the third curved hole 213 causes the fluid's reaction force on the cavity wall to push the nozzle in the opposite direction.

[0028] like Figure 2a , Figure 2b and 2c As shown, the liquid inlet unit 2 also includes a swirling liquid inlet hole 22, an inlet end (23), and an outlet end (24). Specifically, the swirling liquid inlet hole 22 also includes a first swirling inlet hole 221 and a second swirling inlet hole 222. Another key improvement of the first to fifth curved surface holes (211-215), the first swirling inlet hole 221, and the second swirling inlet hole 222 is the cross-sectional shape. The inlet end (23) of the first to fifth curved surface holes (211-215), the first swirling inlet hole 221, and the second swirling inlet hole 222 adopts a tapered design, while the outlet end (24) adopts a tapered design. Figure 2c The enlarged view of the orifice end of the fifth curved face 215 clearly shows that the inlet end (23) adopts a tapering design, while the outlet end (24) adopts a widening design. This structure can both increase the flow velocity and form a diffusion flow at the outlet. Compared with the flush inlet and outlet ends of the existing technology orifices, the five orifices working together can increase the water coverage area, and by adjusting the flow rate of each orifice, the nozzle can spray within a range of ±90°, while the traditional single-orifice design can only reach a maximum of ±45°.

[0029] like Figure 3As shown, the spray unit 3 includes a direct spray hole 31 and a swirling spray hole 32 for receiving extinguishing liquid from the inlet unit 2. The direct spray hole 31 is a straight through hole connected to the connecting pipe 12, and the swirling spray hole 32 is the other part. Specifically, part of the extinguishing liquid entering the ball joint curved hole 21 is sprayed through the direct spray hole 31 to extinguish the fire; the other part enters the swirling spray hole 32 through the first swirling inlet hole 221 and the second swirling inlet hole 222 to extinguish the fire. Specifically, the first swirling inlet hole 221 and the second swirling inlet hole 222 are located at the end of the direct spray hole 31 near the ball joint. The first swirling inlet hole 221 and the second swirling inlet hole 222 work together with the ball joint curved hole 21. The swirling inlet hole 22 guides part of the extinguishing liquid to form a rotating flow, forming a composite extinguishing mode with the direct spray. The spraying effect of the composite extinguishing mode is as follows: Figure 4 and Figure 5 As shown in the dashed lines, the design of the first to fifth curved holes (211-215) and the swirling liquid inlet 22 ensures that the nozzle can obtain a stable pressure supply at any offset angle, both the direct flow injection hole 31 and the swirling liquid injection hole 32.

[0030] Specifically, the DC spray hole 31 adopts a cylindrical straight-through structure with the same diameter as the connecting pipe 12, which ensures that the extinguishing liquid forms a stable directional jet; the vortex spray hole 32 adopts an innovative asymmetric vortex generation structure, and the vortex channel is arranged in a spiral around the DC spray hole with a 30° deflection angle. After forming a composite flow field with the DC spray, it can increase the coverage angle, reduce the atomized particle size, shorten the length of the jet core area, and significantly improve the extinguishing efficiency in confined spaces.

[0031] The fire extinguishing nozzle automatically adjusts its angle using hydraulic pressure when extinguishing fluid is introduced. When the extinguishing fluid enters the inlet unit 2 via the connecting pipe 12, hydraulic pressure creates a dynamic pressure distribution across the five ball joint curved holes 21. This pressure difference drives the universal adjusting ball joint 11 to adjust the spray angle. Simultaneously, the swirling inlet hole 22 automatically adjusts the swirling intensity according to hydraulic pressure changes, ensuring that the swirling spray holes 32 in the spray unit 3 form a suitable spray angle and coverage area. This fully hydraulically driven design requires no external adjustment mechanisms; it relies solely on fluid dynamics to achieve spray positioning, making it suitable for autonomous fire extinguishing operations in confined spaces such as vehicle chassis and battery compartments where personnel cannot easily access them.

[0032] Example 2 Another specific embodiment of this utility model discloses a fire extinguishing device, such as... Figure 1a , Figure 1b , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the fire extinguishing device includes a nozzle body 1, a liquid inlet unit 2, a liquid spraying unit 3, and a fire extinguishing device body 4. The fire extinguishing device body 4 works in conjunction with the fire extinguishing nozzle to form a complete fire extinguishing system, suitable for rapid fire suppression in confined areas such as vehicle chassis and battery compartments.

[0033] The main body 4 of the fire extinguishing device includes a liquid delivery pipeline 41, liquid delivery holes 42 in the fire extinguishing pipe wall, fire extinguishing pipes 43, a ball joint mounting base 44, and a flexible connecting pipe 45. The liquid delivery pipeline 41 serves as the main channel for delivering the fire extinguishing liquid, connecting to external fire extinguishing equipment to ensure high-pressure delivery of the fire extinguishing liquid. The liquid delivery holes 42 in the fire extinguishing pipe wall are evenly distributed along the side wall of the liquid delivery pipeline 41, used to distribute the fire extinguishing liquid to each fire extinguishing pipe 43. Figure 4 As shown, the number of fire extinguishing pipes 43 is one or more. Specifically, in this embodiment, the fire extinguishing pipes 43 include a first fire extinguishing pipe 431, a second fire extinguishing pipe 432, and a third fire extinguishing pipe 433. The first fire extinguishing pipe 431 and the second fire extinguishing pipe 432, and the second fire extinguishing pipe 432 and the third fire extinguishing pipe 433 are connected by a flexible connecting pipe 45. The first fire extinguishing pipe 431, the second fire extinguishing pipe 432, and the third fire extinguishing pipe 433 can be extended at a certain angle through the flexible connecting pipe 45 to ensure that the fire extinguishing liquid is evenly distributed to each nozzle and to increase the spray range of the fire extinguishing liquid.

[0034] like Figure 4 and Figure 5 As shown, ball joint mounting seats 44 are evenly arranged on the first fire extinguishing pipe 431, the second fire extinguishing pipe 432, and the third fire extinguishing pipe 433, and the number of ball joint mounting seats 44 on each fire extinguishing pipe 43 is three or more; Figure 6 A certain gap exists between the ball joint mounting base 44 and the universal adjusting ball joint 11. This structure allows the extinguishing liquid to flow in the gap, thereby enabling the universal adjusting ball joint 11 of the extinguishing nozzle 1 to rotate at multiple angles using hydraulic power. Specifically, the inner diameter of the ball joint mounting base 44 is slightly larger than the maximum diameter of the universal adjusting ball joint 11, ensuring that the nozzle rotates without obstruction. At the same time, the diameter of the limiting hole (441) on the ball joint mounting base 44 is smaller than the maximum diameter of the universal adjusting ball joint 11 to prevent the extinguishing nozzle from falling off during rotation. This structure ensures both the flexible adjustment capability and the stability of the extinguishing nozzle, allowing the extinguishing liquid to be precisely controlled by hydraulic action to spray the nozzle in a precise direction, thereby efficiently covering the fire source area.

[0035] In practical applications, this fire extinguishing device is deployed under the vehicle chassis and connected to the vehicle-mounted or external fire extinguishing system via a liquid delivery pipe 41. When a fire occurs in the vehicle's battery compartment or chassis, the extinguishing liquid is delivered through the liquid delivery pipe 41, flows through the liquid delivery holes 42 in the extinguishing pipe wall, passes through the flexible connecting pipe 45, and is distributed to various extinguishing pipes 43, entering the ball joint mounting seat 44, and finally reaching the extinguishing nozzle. Because the extinguishing nozzle has multi-angle adjustment capabilities, combined with the multi-channel design of the main body 4 of the fire extinguishing device, the extinguishing liquid can quickly cover the fire source area, effectively suppressing the spread of the fire. Furthermore, the extinguishing nozzle is compact when folded, making it easy to store during normal vehicle operation without affecting the chassis's passability. In emergencies, the fire extinguishing device can quickly deploy, forming a radial spray pattern to ensure efficient coverage of the target area with the extinguishing liquid.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fire extinguishing nozzle, characterized in that, include: The nozzle body (1), the liquid inlet unit (2), and the liquid spraying unit (3) are all components of the nozzle. The nozzle body (1) includes a universal adjusting ball joint (11); The liquid inlet unit (2) includes a ball joint curved hole (21) and a swirling liquid inlet hole (22). The ball joint curved hole (21) is located on the universal adjusting ball joint (11). The swirling liquid inlet hole (22) guides part of the extinguishing liquid to form a rotating flow, increasing the spray range. The liquid spraying unit (3) includes a direct liquid spraying hole (31) and a swirling liquid spraying hole (32). The direct liquid spraying hole (31) forms a stable directional jet, and the swirling liquid spraying hole (32) generates diffusion jet through a spirally arranged swirling channel, forming a composite fire extinguishing mode with the direct liquid spray.

2. The fire extinguishing nozzle according to claim 1, characterized in that: The ball joint curved surface (21) includes a first curved surface (211), a second curved surface (212), a third curved surface (213), a fourth curved surface (214), and a fifth curved surface (215). The fifth curved surface (215) is located at the bottom of the universal adjustment ball joint (11) of the nozzle body (1). The first curved surface (211), the second curved surface (212), the third curved surface (213), and the fourth curved surface (214) are distributed at equal angles of 90° with the fifth curved surface (215) as the center, forming a uniform liquid inlet channel layout.

3. The fire extinguishing nozzle according to claim 1, characterized in that: The inlet end (23) of the ball joint curved surface (21) is a tapered structure, and the outlet end (24) of the ball joint curved surface (21) is a expanding structure.

4. The fire extinguishing nozzle according to claim 1, characterized in that: The swirling spray hole (32) is provided with swirling channels arranged in a spiral with a deflection angle of 30°.

5. The fire extinguishing nozzle according to claim 1, characterized in that: The nozzle body (1) also includes a connecting pipe (12) and an outer wall of the nozzle (13). The universal adjustment ball joint (11) allows the nozzle to be freely adjusted at multiple angles. The universal adjustment ball joint (11) and the outer wall of the nozzle (13) are connected by the connecting pipe (12). The outer wall of the nozzle (13) constitutes the external protective structure of the nozzle.

6. The fire extinguishing nozzle according to claim 1, characterized in that: The DC spray hole (31) adopts a cylindrical straight-through structure with the same diameter as the connecting pipe (12).

7. A fire extinguishing device, characterized in that, include: The fire extinguishing device body (4) and the fire extinguishing nozzle as described in any one of claims 1-6; the fire extinguishing device body (4) is provided with a liquid delivery pipe (41), a liquid delivery hole (42) in the fire extinguishing pipe wall, a fire extinguishing pipe (43) and a ball joint mounting seat (44); The infusion pipeline (41) serves as the main delivery channel, and the infusion holes (42) in the fire extinguishing pipe wall are distributed along the side wall of the infusion pipeline (41) to divert the fire extinguishing liquid to each fire extinguishing pipeline (43).

8. The fire extinguishing device according to claim 7, characterized in that: The number of fire extinguishing pipes (43) is multiple, and they are interconnected by flexible connectors (45).

9. The fire extinguishing device according to claim 7, characterized in that: The fire extinguishing pipe (43) is provided with a ball joint mounting seat (44), and each ball joint mounting seat (44) is used to fix a fire extinguishing nozzle.

10. The fire extinguishing device according to claim 7, characterized in that: The inner diameter of the ball joint mounting base (44) is greater than the maximum diameter of the universal adjusting ball joint (11), and the diameter of the limiting hole (441) of the ball joint mounting base (44) is less than the maximum diameter of the universal adjusting ball joint (11).

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