Nozzle with foam generating structure for fire-fighting spray gun

Abstract

The utility model discloses a fire-fighting spray gun nozzle with a foam generating structure, which comprises a cylindrical mixing nozzle and a metal net sleeve sleeved outside the top end of the cylindrical mixing nozzle, the metal net sleeve is fixedly connected with the cylindrical mixing nozzle through a plurality of screws, a foaming net is arranged inside an opening at the top end of the metal net sleeve, and the foaming net is fixedly connected with the cylindrical mixing nozzle through a plurality of screws. The novel anti-scattering protection device is additionally arranged outside the cylindrical mixing nozzle, and the situation that fire-fighting foam sprayed out of the nozzle scatters due to the fact that the diffusion range of the fire-fighting foam is too large can be avoided through the conical protection cover connected to the outer portion of the cylindrical mixing nozzle in a sleeving mode; the conical protection cover can effectively limit the diffusion range of the sprayed fire-fighting foam, so that the fire-fighting foam sprayed by the spray nozzle can be intensively sprayed to a fire-fighting place, the use efficiency of the fire-fighting foam can be improved, it is ensured that fire extinguishing operation can be more accurately carried out in a fire scene, waste of the fire-fighting foam is reduced, and the fire-fighting foam is saved. And limited resources can play a greater role.

Description

Technical Field

[0001] This utility model belongs to the technical field of fire protection equipment, specifically relating to a nozzle for a fire spray gun with a foam generating structure. Background Technology

[0002] With the continuous development of society, fire safety issues are receiving increasing attention. Fire hoses are one of the most important firefighting tools during a fire. However, traditional fire hose nozzles have some problems during use;

[0003] On the one hand, fire-fighting foam tends to spread too widely during spraying, preventing it from concentrating on the fire area, reducing fire-fighting efficiency, and wasting fire-fighting resources. On the other hand, accurately spraying foam to the target location is crucial for fire-fighting effectiveness, but traditional nozzles lack effective calibration methods, making it difficult for firefighters to precisely control the spray direction during operation.

[0004] To address these issues, a fire nozzle with a foam-generating structure and a matching anti-spillage protection device were developed. This device aims to improve the efficiency of fire-fighting foam utilization, enhance fire extinguishing effectiveness, and provide a more reliable tool for firefighting operations. Utility Model Content

[0005] The purpose of this invention is to provide a nozzle for a fire hose reel with a foam generating structure, in order to solve the problem mentioned in the background art that fire foam tends to spread too widely during spraying, resulting in the foam not being able to concentrate on the fire area, reducing fire extinguishing efficiency, and also wasting fire-fighting resources.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a nozzle for a fire spray gun with a foam generating structure, comprising a cylindrical mixing nozzle and a metal mesh sleeve fitted over the top of the cylindrical mixing nozzle. The metal mesh sleeve is fixedly connected to the cylindrical mixing nozzle by multiple screws. A foaming net is provided inside the opening at the top of the metal mesh sleeve, and the foaming net is located outside the top of the cylindrical mixing nozzle. An anti-scattering protection device is fitted over the outside of the cylindrical mixing nozzle.

[0007] Preferably, the anti-scattering protection device includes a metal fixing ring, a conical protective cover, embedded screws, and a calibration block. The metal fixing ring is sleeved on the outside of the cylindrical mixing nozzle, and the metal fixing ring and the cylindrical mixing nozzle are fixedly connected by multiple embedded screws. A conical protective cover is provided at the top of the metal fixing ring, and a calibration block is fixed on the outer wall of the front end of the opening at the top of the conical protective cover.

[0008] Preferably, the diameter of the top opening of the conical protective cover is twice the diameter of the bottom opening, and the conical protective cover is completely fitted over the top of the cylindrical mixing nozzle, and the inner wall of the conical protective cover is smooth and burr-free.

[0009] Preferably, the anti-scattering protection device further includes a sealed battery and a laser calibration head. The laser calibration head is fixed inside the center of the calibration block, and the sealed battery is fixed at the bottom of the calibration block. The sealed battery and the laser calibration head are electrically connected.

[0010] Preferably, a foaming core is fixed inside the upper side of the center of the cylindrical mixing nozzle, and multiple foaming holes are equidistantly arranged inside the foaming core. A sealing gasket is also provided between the circular outer wall of the foaming core and the circular inner wall of the cylindrical mixing nozzle for encryption treatment.

[0011] Preferably, the bottom end of the cylindrical mixing nozzle is provided with an externally threaded mounting cylinder, which is in communication with the interior of the cylindrical mixing nozzle.

[0012] Preferably, a hexagonal adjusting sleeve is fixedly fitted to the top of the external threaded mounting cylinder, and a sealing ring is provided at the bottom of the hexagonal adjusting sleeve. The sealing ring is fitted onto the outside of the external threaded mounting cylinder, and both the sealing ring and the hexagonal adjusting sleeve are fixedly connected to the external threaded mounting cylinder by welding.

[0013] Compared with the prior art, the present invention provides a nozzle for a fire hose reel with a foam generating structure, which has the following advantages:

[0014] This invention incorporates a novel anti-scattering protection device on the outside of a cylindrical mixing nozzle. This device, consisting of a conical protective cover fitted around the nozzle, prevents the fire-fighting foam from spreading too widely and scattering. The conical protective cover effectively limits the spread of the sprayed fire-fighting foam, ensuring that the foam is concentrated and directed towards the fire site. This improves the efficiency of the fire-fighting foam, ensuring more precise firefighting operations at the scene, reducing waste, and maximizing the use of limited resources. Furthermore, the concentrated spray increases the impact force of the foam, which is beneficial for fires with greater fire resistance. More aggressive areas can be suppressed more effectively, giving firefighters more time and space for firefighting and rescue operations. Meanwhile, the laser calibration head inside the calibration block at the top of the cone-shaped protective cover can emit a laser beam during use, allowing users to quickly and accurately determine the spray direction, improving the precision of firefighting operations. The sealed battery provides a stable power supply to the laser calibration head, ensuring its continuous operation. In addition, the metal fixing ring is fixed to the cylindrical mixing nozzle with embedded screws, making the anti-scattering protection device firmly installed and not easy to loosen or fall off. It can function stably in the harsh environment of firefighting operations, providing a strong guarantee for the efficient conduct of firefighting work. Attached Figure Description

[0015] Figure 1 This is a side-view three-dimensional structural diagram of a nozzle for a fire-fighting spray gun with a foam-generating structure according to the present invention.

[0016] Figure 2 This is a three-dimensional disassembly diagram of a nozzle for a fire-fighting spray gun with a foam-generating structure according to the present invention.

[0017] Figure 3 This is a frontal plan view of a nozzle for a fire-fighting spray gun with a foam-generating structure according to the present invention.

[0018] Figure 4 This is a three-dimensional structural diagram of the anti-scattering protection device of this utility model.

[0019] In the diagram: 1. External threaded mounting sleeve; 2. Sealing retaining ring; 3. Hexagonal adjusting sleeve; 4. Cylindrical mixing nozzle; 5. Anti-scattering protection device; 6. Metal mesh sleeve; 7. Foaming mesh; 8. Foaming core; 9. Metal retaining ring; 10. Conical protective cover; 11. Embedded screw; 12. Sealed battery; 13. Calibration block; 14. Laser calibration head. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] This utility model provides, for example Figure 1-4 The fire nozzle for a fire hose with a foam-generating structure, as shown, includes a cylindrical mixing nozzle 4 and a metal mesh sleeve 6 fitted onto the outside of the top of the cylindrical mixing nozzle 4. The metal mesh sleeve 6 is fixedly connected to the cylindrical mixing nozzle 4 by multiple screws. A foaming net 7 is disposed inside the opening at the top of the metal mesh sleeve 6, and the foaming net 7 is located outside the top of the cylindrical mixing nozzle 4. The metal mesh sleeve 6, fitted onto the outside of the top of the cylindrical mixing nozzle 4 and fixedly connected by multiple screws, provides a stable support structure for the foaming net 7. The foaming net 7, located outside the top of the cylindrical mixing nozzle 4, can further refine and homogenize the foam. The foaming agent makes the foam finer and more stable, improving its fire extinguishing effect. A foaming core 8 is fixed inside the upper center of the cylindrical mixing nozzle 4. Multiple foaming holes are evenly spaced inside the foaming core 8. A sealing gasket is also installed between the circular outer wall of the foaming core 8 and the circular inner wall of the cylindrical mixing nozzle 4 for enhanced sealing. When the fire-fighting liquid passes through the cylindrical mixing nozzle 4, the liquid flows into the foaming core 8. The multiple evenly spaced foaming holes inside the foaming core 8 cause the liquid to form fine streams as it passes through. These streams mix thoroughly with air as they pass through the foaming holes, generating a large amount of foam. Simultaneously, the circular foaming core 8... The sealing gasket between the outer wall of the cylindrical mixing nozzle 4 and the inner circular wall of the cylindrical mixing nozzle 4 is reinforced to ensure that the liquid does not leak during the foaming process, thus guaranteeing the stability and efficiency of foaming. An externally threaded mounting cylinder 1 is provided at the bottom of the cylindrical mixing nozzle 4, which is connected to the inside of the nozzle. The externally threaded mounting cylinder 1 at the bottom of the cylindrical mixing nozzle 4 is used to connect to the fire nozzle, enabling quick installation and disassembly of the nozzle and nozzle. The connection between the externally threaded mounting cylinder 1 and the inside of the cylindrical mixing nozzle 4 ensures that the fire-fighting liquid can smoothly flow from the nozzle into the nozzle for foaming and spraying. The top of the externally threaded mounting cylinder 1... A hexagonal adjusting sleeve 3 is fixedly fitted to the outside of the end. A sealing ring 2 is provided at the bottom of the hexagonal adjusting sleeve 3. The sealing ring 2 is fitted onto the outside of the external threaded mounting cylinder 1. Both the sealing ring 2 and the hexagonal adjusting sleeve 3 are fixedly connected to the external threaded mounting cylinder 1 by welding. The hexagonal adjusting sleeve 3 is fitted onto the outside of the top of the external threaded mounting cylinder 1, which is convenient for users to install and disassemble using tools. The sealing ring 2 is located at the bottom of the hexagonal adjusting sleeve 3, fitted onto the outside of the external threaded mounting cylinder 1, and fixedly connected to the external threaded mounting cylinder 1 by welding, which plays a sealing role and prevents fire-fighting liquid from leaking at the connection.

[0022] like Figure 1 and Figure 4 As shown, a spill protection device 5 is fitted onto the outside of the cylindrical mixing nozzle 4. The spill protection device 5 includes a metal retaining ring 9, a conical protective cover 10, embedded screws 11, and a calibration block 13. The metal retaining ring 9 is fitted onto the outside of the cylindrical mixing nozzle 4, and the metal retaining ring 9 and the cylindrical mixing nozzle 4 are fixedly connected by multiple embedded screws 11. The design of the embedded screws 11 makes the connection more stable and less susceptible to external impacts and vibrations. In the harsh environment of fire fighting operations, it can ensure the stability of the spill protection device 5. The metal retaining ring 9 is securely mounted on the cylindrical mixing nozzle 4 to ensure its proper function. A conical protective cover 10 is provided at the top of the metal retaining ring 9. A calibration block 13 is fixed to the outer wall of the front end of the opening at the top of the conical protective cover 10. The diameter of the opening at the top of the conical protective cover 10 is twice the diameter of the opening at the bottom. The conical protective cover 10 completely fits over the top of the cylindrical mixing nozzle 4. The inner wall of the conical protective cover 10 is smooth and burr-free. Its special shape design ensures that the spray from the nozzle... The foam diffusion process is restricted because the diameter of the top opening of the conical protective cover 10 is twice the diameter of the bottom opening, forming a gradually expanding space. This effectively guides the foam to be sprayed forward in a concentrated manner, preventing the foam from spreading too widely and scattering, thereby improving the efficiency of foam use and ensuring that the fire-fighting foam can act more accurately on the fire area. The anti-scattering protection device 5 also includes a sealed battery 12 and a laser calibration head 14. The laser calibration head 14 is fixed inside the center of the calibration block 13, and the sealed battery 12 is fixed at the bottom of the calibration block 13. The sealed battery 12 is electrically connected to the laser calibration head 14. During use, the laser calibration head 14 can emit a laser beam to provide the user with a clear spray direction indicator. This allows firefighters to spray the foam to the target location more accurately when operating the fire spray gun, improving the accuracy of fire extinguishing. The inner wall of the conical protective cover 10 is smooth and burr-free, which reduces the resistance of the foam during the spraying process and avoids damage to the foam, ensuring that the foam can be sprayed in the best condition.

[0023] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A nozzle with foam generating structure for fire fighting lance, comprising a cylindrical mixing nozzle (4) and a metal mesh sleeve (6) sleeved outside the top end of the cylindrical mixing nozzle (4), the metal mesh sleeve (6) is fixedly connected with the cylindrical mixing nozzle (4) through a plurality of screws, the top end of the metal mesh sleeve (6) is provided with a foaming mesh (7) inside an opening, and the foaming mesh (7) is located outside the top end of the cylindrical mixing nozzle (4), characterized in that: The cylindrical mixing nozzle (4) is externally sleeved with the anti-scattering protection device (5); ​ The anti-scattering protection device (5) comprises a metal fixing ring (9), a conical protective cover (10), an embedded screw (11) and a calibration block (13), the metal fixing ring (9) is sleeved on the outside of the cylindrical mixing nozzle (4), and the metal fixing ring (9) and the cylindrical mixing nozzle (4) are fixedly connected through a plurality of embedded screws (11), the metal fixing ring (9) is provided with the conical protective cover (10) at the top end, and the conical protective cover (10) is fixed with the calibration block (13) on the outer wall of the front end of the top end opening.

2. A nozzle for a fire fighting lance with a foam generating structure according to claim 1, characterized in that: The top end opening diameter of the conical protective cover (10) is twice the bottom end opening diameter, and the conical protective cover (10) is completely sleeved on the outside of the top end of the cylindrical mixing nozzle (4), and the inner wall of the conical protective cover (10) is smooth without burrs.

3. A nozzle for a fire fighting lance with a foam generating structure according to claim 2, characterized in that: The anti-scattering protection device (5) further comprises a sealed battery (12) and a laser calibration head (14), the laser calibration head (14) is fixed in the center of the calibration block (13), and the sealed battery (12) is fixed at the bottom end of the calibration block (13) and electrically connected with the laser calibration head (14).

4. A nozzle for a fire fighting lance with a foam generating structure according to claim 1, characterized in that: The foaming core (8) is fixed in the upper side of the center of the cylindrical mixing nozzle (4), a plurality of foaming holes are equidistantly arranged in the foaming core (8), and a sealing gasket is further arranged between the circular outer wall of the foaming core (8) and the circular inner wall of the cylindrical mixing nozzle (4) for encryption processing.

5. A nozzle for a fire fighting lance with foam generating structure according to claim 4, characterized in that: The bottom end of the cylindrical mixing nozzle (4) is provided with an external thread mounting cylinder (1), and the external thread mounting cylinder (1) is in communication with the inside of the cylindrical mixing nozzle (4).

6. A nozzle for a fire fighting lance with a foam generating structure according to claim 5, characterized in that: The top end of the external thread mounting cylinder (1) is externally sleeved with a hexagonal adjusting sleeve (3), the bottom end of the hexagonal adjusting sleeve (3) is provided with a sealing stop ring (2), the sealing stop ring (2) is sleeved on the outside of the external thread mounting cylinder (1), and the sealing stop ring (2) and the hexagonal adjusting sleeve (3) are fixedly connected with the external thread mounting cylinder (1) by welding.

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