Nozzle for fire extinguishing device

Abstract

The nozzle for the fire extinguishing device comprises a nozzle body, the nozzle body is provided with a water inlet and a nozzle opening, and the water inlet is communicated with the nozzle opening; the dustproof cap is connected to the nozzle body in a sleeving mode, and the dustproof cap is located at the spraying opening; the filter screen is mounted in the nozzle body; wherein the filter screen is of a three-dimensional structure. According to the nozzle for the fire extinguishing device, the filter screen can provide a larger filter area, impurities and particles in water can be more effectively captured and prevented from entering the nozzle, smoothness of the nozzle and effective spraying of a fire extinguishing agent are ensured, the filter screen of a three-dimensional structure further has better fluid passing ability, the resistance of water flow can be reduced, and the fire extinguishing effect is improved. Therefore, the risk that the nozzle is blocked is reduced, the frequency of maintenance and replacement is reduced, the filtering effect is enhanced, the liquid circulation efficiency is improved, it is ensured that the nozzle always keeps a good working state, and the service life of the nozzle is prolonged.

Description

Technical Field

[0001] This application relates to the field of nozzle technology, and more specifically to a nozzle for a fire extinguishing device. Background Technology

[0002] Nozzles are an important component of fire extinguishing systems. They are mainly used to spray extinguishing agents (such as water, foam, or dry powder) in a specific manner to effectively extinguish flames.

[0003] The publication number CN1377735A discloses a fine water mist nozzle for direct high-pressure atomization, particularly a nozzle suitable for fire extinguishing, comprising a nozzle base, a filter frame with a filter screen covering it, and a nozzle body with a swirl core inside; one end of the nozzle base has a threaded hole for connecting to a spray gun, and the other end has a threaded hole for connecting to the rear end of the nozzle body; a flow channel is opened in the middle of the nozzle base; the small end of the filter frame installed in the flow channel of the nozzle base is threadedly connected to the nozzle body; the filter frame has an oblong flow channel, which communicates with the flow channel inside the nozzle base; a swirl core is installed in the mixing chamber of the nozzle body; and a spray hole communicating with the mixing chamber is opened at the front end of the nozzle body.

[0004] The nozzle in the prior art is a fine water mist nozzle that directly atomizes under high pressure. Its filter frame surrounds the inner wall of the nozzle, and the liquid is filtered in the vertical plane. However, the gap between the filter frame and the inner wall channel of the nozzle is small. When the liquid contains impurities, these impurities are easy to accumulate between the filter frame and the inner wall channel of the nozzle. Long-term accumulation can easily lead to blockage, thereby reducing the gap for liquid flow, which in turn slows down the liquid flow and reduces the filtration efficiency.

[0005] Therefore, there is room for further improvement in the structure of the nozzle in the prior art. Utility Model Content

[0006] In view of this, and addressing the technical problem in the prior art where the gap between the filter frame and the inner wall channel of the nozzle is small, making it easy for impurities to accumulate between the filter frame and the inner wall channel of the nozzle, leading to blockage, this application provides a nozzle for a fire extinguishing device. By setting a three-dimensional planar filter screen, it can effectively capture impurities and particles in the liquid, prevent them from entering the nozzle, thereby reducing the risk of blockage and improving the filtration efficiency of the liquid.

[0007] To achieve the above objectives, this application provides the following technical solution: a nozzle for a fire extinguishing device, comprising:

[0008] The nozzle body is provided with a water inlet and a nozzle, and the water inlet is connected to the nozzle.

[0009] A dust cap, which is fitted onto the nozzle body and located at the nozzle opening;

[0010] A filter screen, which is installed in the nozzle body;

[0011] The filter screen has a three-dimensional structure.

[0012] Compared with the prior art, the nozzle of the fire extinguishing device of this application is equipped with a three-dimensional filter screen, which allows the filter screen to provide a larger filtration area, more effectively capture impurities and particulate matter in the water, prevent them from entering the nozzle, ensure the nozzle is unobstructed and the fire extinguishing agent is effectively sprayed. In addition, the three-dimensional filter screen also has better fluid permeability, which can reduce water flow resistance, thereby reducing the risk of nozzle clogging, reducing the frequency of maintenance and replacement, enhancing the filtration effect, improving liquid flow efficiency, ensuring that the nozzle always maintains a good working condition, and extending the service life of the nozzle.

[0013] Preferably, the diameter of the nozzle gradually increases from the water inlet to the outlet direction, and the nozzle has a trumpet-shaped structure.

[0014] In this embodiment, the diameter of the nozzle gradually increases from the water inlet to the spray direction, which can effectively spray water out at a faster speed, forming a larger spray range, which helps to quickly cover the fire source and improve the efficiency of fire extinguishing.

[0015] In an embodiment of this application, the dust cap includes a dust cover and a grip. The dust cover is fitted onto the nozzle body. One end of the grip is connected to the dust cover, and the other end is fitted onto one end of the water inlet. The grip can rotate freely relative to the dust cover.

[0016] In this embodiment, the grip can rotate freely relative to the dust cover, allowing the user to use the nozzle at different angles, and the nozzle can also be installed or placed at different angles.

[0017] Preferably, the gripping component includes a hanging rope and a rotating part, wherein the hanging rope is fixedly connected to the rotating part;

[0018] The dust cover has a protrusion, and the rotating part is sleeved on the protrusion, which has a T-shaped structure.

[0019] In this embodiment, the dust cover has a protrusion, which helps to prevent the rotating part from falling off or coming loose from the protrusion.

[0020] Preferably, the nozzle body includes a connecting part and a nozzle base, and the connecting part is fixedly connected to the nozzle base;

[0021] The dust cap is fitted onto the connecting part, and the bottom of the dust cap is in contact with the top of the nozzle base;

[0022] A sealing ring is provided between the connecting part and the dust cap, and the sealing ring is sleeved on the connecting part.

[0023] In this embodiment, when the dust cap is placed on the nozzle body, the sealing ring can generate tension, making the dust cap less likely to loosen under vibration or external force, thereby enhancing the connection strength between the dust cap and the nozzle body.

[0024] Preferably, the connecting portion is provided with an annular groove, and the sealing ring is at least partially located within the annular groove, the size of the annular groove being adapted to the size of the sealing ring;

[0025] The annular groove is located in the middle of the connecting part.

[0026] In this embodiment, when the user manually tightens the dust cap, the deformation of the sealing ring is controlled during the tightening process. When the maximum deformation is reached, the groove can limit the compression of the sealing ring, thereby avoiding damage to the sealing ring due to excessive deformation, thus improving the sealing effect, increasing efficiency and reducing costs.

[0027] In an embodiment of this application, a swirl core is provided in the nozzle body, and the swirl core is located between the nozzle and the filter screen; wherein, the swirl core is an integral structure.

[0028] In this embodiment, the swirl core can cause the fluid to rotate as it passes through, enhancing the mixing effect of the fluid. This rotating flow helps to improve the uniformity of the extinguishing agent spray and expand the coverage area, thereby improving the extinguishing effect.

[0029] Preferably, the nozzle body is further provided with a retaining spring, which is located between the filter screen and the water inlet;

[0030] The diameter of the retaining ring is larger than the diameter of the filter screen.

[0031] In this embodiment, the retaining ring can effectively fix the filter screen, preventing it from falling off or shifting during use, ensuring that the filter screen is always in the correct position and maintains a good filtration effect.

[0032] Preferably, the spindle core includes a first connecting portion and two second connecting portions, with the two opposite sides of the first connecting portion respectively connected to the second connecting portions, and the first connecting portion located between the two second connecting portions;

[0033] The two second connecting parts are arranged intersectingly, and the connection positions of the two second connecting parts and the first connecting part do not overlap. The second connecting parts are arc-shaped structures.

[0034] In this embodiment, the connection positions of the two second connecting parts and the first connecting part do not overlap. The cross arrangement of the two second connecting parts can promote the mixing of fluids and enhance the mixing effect of the extinguishing agent with air or other components during spraying, thereby improving the extinguishing efficiency and coverage.

[0035] Preferably, the filter screen includes a filter element and a support frame, and the filter element is connected to the support frame;

[0036] The filter element includes multiple filter ribs, which are arranged in an alternating manner.

[0037] The support frame has an elliptical structure and is hollow.

[0038] In this embodiment, multiple staggered filter ribs can effectively capture and intercept impurities and particulate matter in the fluid, reduce the accumulation of deposits on the filter screen surface, reduce the risk of clogging, thereby improving filtration efficiency and fluid flowability. Attached Figure Description

[0039] Figure 1 This is a three-dimensional structural schematic diagram of a nozzle for a fire extinguishing device provided in an embodiment of this application;

[0040] Figure 2 This is a schematic diagram of the exploded structure of a nozzle for a fire extinguishing device provided in an embodiment of this application;

[0041] Figure 3 yes Figure 1 AA section view in the middle;

[0042] Figure 4 This is a schematic diagram of the structure of a swivel core provided in an embodiment of this application;

[0043] Figure 5 This is a schematic diagram of the structure of a filter screen provided in an embodiment of this application.

[0044] Figure label:

[0045] 1. Nozzle body; 2. Dust cap; 3. Filter screen; 4. Sealing ring; 5. Rotary core; 6. Snap ring;

[0046] 11. Water inlet; 12. Nozzle; 13. Connecting part; 14. Nozzle base; 21. Dust cover; 31. Filter element; 32. Support frame; 51. First connecting part; 52. Second connecting part;

[0047] 131. Annular groove; 211. Protrusion; 221. Hanging rope; 222. Rotating part; 311. Filter rib. Detailed Implementation

[0048] To enable those skilled in the art to better understand the technical solutions of this disclosure, the following detailed, clear, and complete description of this disclosure is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this disclosure and are not intended to limit it.

[0049] In the description of this application, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0050] Those skilled in the art should understand that in the disclosure of this application, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this application.

[0051] The present application will now be described in further detail with reference to the accompanying drawings, see below. Figures 1 to 5 illustrate.

[0052] This embodiment provides a nozzle for a fire extinguishing device, which is applied in the field of nozzle technology, specifically, as follows: Figures 1 to 5As shown, the nozzle includes a nozzle body 1, a dust cap 2, and a filter screen 3. The dust cap 2 is fitted onto the nozzle body 1. The nozzle body 1 has a water inlet 11 and a nozzle 12, which are connected. The dust cap 2 is located at the nozzle 12. The dust cap 2 is used to protect the nozzle 12, preventing dust, impurities, and other contaminants from entering the nozzle and avoiding blockage or damage. The dust cap 2 can also provide additional protection when the nozzle is not in use, ensuring that the nozzle can work normally when needed. The dust cap 2 is detachably connected to the nozzle body 1, making it easy to remove and install so that it can be quickly removed when the nozzle is in use, while providing effective protection when not in use. In this embodiment, the filter screen 3 is installed inside the nozzle body 1. The filter screen 3 has a three-dimensional structure and is horizontally arranged, allowing it to provide a larger filtration area. This enables it to more effectively capture impurities and particulate matter in the water, preventing them from entering the nozzle and ensuring unobstructed flow of the nozzle and effective spraying of the extinguishing agent. Furthermore, the three-dimensional filter screen 3 has better fluid permeability, reducing water flow resistance and thus lowering the risk of nozzle blockage, reducing maintenance and replacement frequency, enhancing filtration efficiency, improving liquid flow efficiency, ensuring the nozzle always maintains good working condition, and extending the nozzle's service life. The nozzle 12 has a trumpet-shaped structure, with its diameter gradually increasing from the inlet to the outlet direction. This effectively sprays water at a faster speed, creating a larger spray range, which helps to quickly cover the fire source and improve fire extinguishing efficiency.

[0053] Specifically, such as Figure 2 As shown, the dust cap 2 includes a dust cover 21 and a grip. The dust cover 21 is fitted onto the nozzle body 1. One end of the grip is connected to the dust cover 21, and the other end is fitted onto one end of the water inlet 11. The grip can rotate freely relative to the dust cover 21, allowing the user to use the nozzle at different angles and to install or place the nozzle at different angles. The grip includes a hanging rope 221 and a rotating part 222. The hanging rope 221 is fixedly connected to the rotating part 222. The dust cover 21 has a protrusion 211, and the rotating part 222 is fitted onto the protrusion 211. The protrusion 211 has a T-shaped structure, which helps to prevent the rotating part 222 from falling off or loosening from the protrusion 211.

[0054] Furthermore, such as Figure 2As shown, the nozzle body 1 includes a connecting part 13 and a nozzle base 14. The connecting part 13 is fixedly connected to the nozzle base 14. The dust cap 2 is sleeved on the connecting part 13, and the bottom of the dust cap 2 fits against the top of the nozzle base 14. A sealing ring 4 is provided between the connecting part 13 and the dust cap 2. When the dust cap 2 is on the nozzle body 1, the sealing ring 4 can generate tension, making the dust cap 2 less likely to loosen under vibration or external force, thereby enhancing the connection strength between the dust cap 2 and the nozzle body 1 and reducing the entry of impurities and dust into the nozzle 12. The connecting part 13 is provided with an annular groove 131, and the sealing ring 4 is at least partially located within the annular groove 131. The annular groove 131 is located in the middle of the connecting part 13, and its size is adapted to the size of the sealing ring 4. When the user manually tightens the dust cap 2, the deformation of the sealing ring 4 is controlled during the tightening process. When the maximum deformation is reached, the groove can limit the degree of compression of the sealing ring 4, thereby avoiding damage to the sealing ring 4 due to excessive deformation, thus improving the sealing effect, reducing the risk of damage, improving usage efficiency, and reducing costs. The nozzle base 14 is provided with an installation groove for mounting the hanging rope 221, making it less likely for the hanging rope 221 to fall off or shift from the nozzle base 14, thereby improving the connection strength between the hanging rope 221 and the nozzle base 14.

[0055] In the embodiments of this application, such as Figures 2 to 5 As shown, the nozzle body 1 is also equipped with a swivel core 5 and a retaining spring 6. The swivel core 5 is an integral structure and is located between the nozzle 12 and the filter screen 3. It can make the fluid rotate when passing through the swivel core 5, which enhances the mixing effect of the fluid. This rotating flow helps to improve the uniformity and coverage of the extinguishing agent spray, thereby improving the extinguishing effect. The retaining spring 6 is located between the filter screen 3 and the water inlet 11. The diameter of the retaining spring 6 is larger than the diameter of the filter screen 3, which can effectively fix the filter screen 3 and prevent it from falling off or shifting during use, ensuring that the filter screen 3 is always in the correct position and maintains a good filtration effect.

[0056] Specifically, such as Figure 5As shown, the swirl core 5 includes a first connecting portion 51 and two second connecting portions 52. The two second connecting portions 52 are connected to opposite sides of the first connecting portion 51. The first connecting portion 51 is located between the two second connecting portions 52, and the second connecting portions 52 are located at the end of the first connecting portion 51 facing the nozzle 12. The two second connecting portions 52 are arranged crosswise, and their connection points with the first connecting portion 51 do not overlap. This crosswise arrangement of the two second connecting portions 52 promotes fluid mixing and enhances the mixing effect of the extinguishing agent with air or other components during spraying, thereby improving extinguishing efficiency and coverage. The second connecting portions 52 have an arc-shaped structure. This arc-shaped structure effectively guides the flow direction of the fluid, reduces fluid resistance inside the nozzle, improves fluid flow efficiency, and helps achieve a more uniform spray effect.

[0057] Furthermore, such as Figure 4 As shown, the filter screen 3 includes a filter element 31 and a support frame 32. The support frame 32 has an elliptical structure and is hollow. The filter element 31 is connected to the support frame 32. The filter element 31 includes multiple filter ribs 311, which are arranged in an alternating manner. The multiple alternating filter ribs 311 can form a more complex filtration path, effectively capturing and intercepting impurities and particulate matter in the fluid, reducing the accumulation of deposits on the surface of the filter screen 3, reducing the risk of clogging, thereby improving the filtration efficiency, improving the fluid flowability, and ensuring the purity of the fluid.

[0058] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The descriptions of the embodiments above are only for the purpose of helping to understand the present application and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A nozzle for a fire extinguishing device, characterized in that, include: The nozzle body (1) is provided with a water inlet (11) and a nozzle (12), and the water inlet (11) is connected to the nozzle (12); Dust cap (2), the dust cap (2) is fitted onto the nozzle body (1), the dust cap (2) is located at the nozzle (12); A filter screen (3) is installed inside the nozzle body (1); The filter screen (3) has a three-dimensional structure; The filter screen (3) includes a filter element (31) and a support frame (32), wherein the filter element (31) is connected to the support frame (32); The filter element (31) includes a plurality of filter ribs (311), which are arranged in an alternating manner; The support frame (32) is an elliptical structure and is hollow.

2. The nozzle for the fire extinguishing device according to claim 1, characterized in that, The diameter of the nozzle (12) gradually increases from the water inlet (11) to the spray direction, and the nozzle (12) has a trumpet-shaped structure.

3. The nozzle for the fire extinguishing device according to claim 1, characterized in that, The dust cap (2) includes a dust cover (21) and a grip, wherein the dust cover (21) is fitted onto the nozzle body (1); One end of the grip is connected to the dust cover (21), and the other end is sleeved on one end of the water inlet (11). The grip can rotate freely relative to the dust cover (21).

4. The nozzle for the fire extinguishing device according to claim 3, characterized in that, The grip includes a hanging rope (221) and a rotating part (222), wherein the hanging rope (221) and the rotating part (222) are fixedly connected; The dust cover (21) has a protrusion (211), and the rotating part (222) is sleeved on the protrusion (211). The protrusion (211) has a T-shaped structure.

5. The nozzle for the fire extinguishing device according to claim 3, characterized in that, The nozzle body (1) includes a connecting part (13) and a nozzle base (14), and the connecting part (13) is fixedly connected to the nozzle base (14); The dust cap (2) is fitted onto the connecting part (13), and the bottom of the dust cap (2) is in contact with the top of the nozzle base (14); A sealing ring (4) is provided between the connecting part (13) and the dust cap (2), and the sealing ring (4) is sleeved on the connecting part (13).

6. The nozzle for the fire extinguishing device according to claim 5, characterized in that, The connecting part (13) is provided with an annular groove (131), and the sealing ring (4) is at least partially located in the annular groove (131). The size of the annular groove (131) is adapted to the size of the sealing ring (4). The annular groove (131) is located in the middle of the connecting part (13).

7. The nozzle for the fire extinguishing device according to claim 1, characterized in that, The nozzle body (1) is provided with a swirl core (5), which is located between the nozzle (12) and the filter screen (3); The spindle core (5) is an integral structure.

8. The nozzle for the fire extinguishing device according to claim 1, characterized in that, The nozzle body (1) is also provided with a retaining spring (6), which is located between the filter screen (3) and the water inlet (11); The diameter of the snap ring (6) is larger than the diameter of the filter screen (3).

9. The nozzle for the fire extinguishing device according to claim 7, characterized in that, The spindle (5) includes a first connecting part (51) and two second connecting parts (52). The two sides of the first connecting part (51) are respectively connected to the second connecting parts (52), and the first connecting part (51) is located between the two second connecting parts (52). The two second connecting parts (52) are arranged in an intersecting manner, and the connection positions of the two second connecting parts (52) and the first connecting part (51) do not overlap. The second connecting part (52) has an arc-shaped structure.

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