Fire-fighting water mist nozzle

Abstract

The utility model belongs to the technical field of fire-fighting equipment, and particularly relates to a fire-fighting water mist sprayer which comprises a sprayer body, a connecting sleeve and a flexible cover, a water outlet is formed in the lower end of the sprayer body, the connecting sleeve is arranged on the sprayer body in a sleeving mode and connected with the sprayer body through a connecting structure, and the flexible cover is arranged on the connecting sleeve. The flexible cover is connected with the connecting sleeve in a clamped mode and arranged around the water outlet, the cross sectional area of the flexible cover is gradually increased in the water outlet direction, and the lower end of the flexible cover is lower than the water outlet. A physical isolation area is formed by the flexible cover, when a maintainer approaches to work, the flexible cover expanding outwards can prevent the head or the body from accidentally colliding with the lower end of the spray head body in advance, the scratch or collision risk is reduced, safety accidents are avoided, the service life of the spray head can be prolonged, and the service life of the spray head is prolonged. The arrangement of the connecting sleeve facilitates subsequent disassembly, assembly, maintenance and replacement.

Description

Technical Field

[0001] This utility model belongs to the field of fire-fighting equipment technology, and in particular relates to a fire-fighting water mist nozzle. Background Technology

[0002] Fire sprinklers are the core component of automatic sprinkler systems, and their design directly affects fire extinguishing efficiency and safety. Currently, most common fire sprinklers are made of metal or rigid plastic. In confined spaces such as industrial plants, underground utility tunnels, and data centers, when workers are performing equipment maintenance or repair work, their body parts, such as arms, legs, and heads, are highly susceptible to accidental collisions with the rigid components at the bottom of the sprinkler, causing scratches or impact injuries, posing a significant safety hazard. Utility Model Content

[0003] The purpose of this invention is to provide a fire-fighting water mist nozzle that can solve the above-mentioned problems.

[0004] To achieve the above objectives, this utility model provides a fire-fighting water mist nozzle, comprising a nozzle body, a connecting sleeve, and a flexible cover. The lower end of the nozzle body has a water outlet. The connecting sleeve is fitted onto the nozzle body and connected to the nozzle body via a connecting structure. The flexible cover is snapped into the connecting sleeve and is arranged around the water outlet. The cross-sectional area of ​​the flexible cover gradually increases along the water outlet direction, and the lower end of the flexible cover is lower than the water outlet.

[0005] Optionally, the connecting structure includes an opening, a limiting port, and a connecting protrusion. The opening and the limiting port are both formed on the outer side wall of the connecting sleeve. The opening extends vertically and penetrates the upper end of the connecting sleeve. The limiting port extends circumferentially along the connecting sleeve and one end is connected to the opening.

[0006] The connecting protrusion is disposed on the outer side wall of the nozzle body and is adapted to the opening and the limiting port. The connecting protrusion can pass through the opening and be limited at the limiting port.

[0007] Optionally, the upper inner wall of the limiting port is provided with an arc-shaped groove adapted to the connecting protrusion, and the connecting protrusion can be limited in the arc-shaped groove.

[0008] Optionally, an annular portion extending radially outward is provided on the outer side wall of the nozzle body. When the upper end of the connecting sleeve abuts against the lower end of the annular portion, the connecting protrusion abuts against the inner bottom wall of the opening and corresponds to the limiting port.

[0009] Optionally, an annular limiting protrusion is provided on the inner sidewall of the upper end of the flexible cover, and an annular groove corresponding to and adapted to the annular limiting protrusion is provided on the outer sidewall of the connecting sleeve, and the annular limiting protrusion can be limited to the annular groove.

[0010] Optionally, the sidewalls of the flexible cover are bent outwards.

[0011] Optionally, the flexible cover is a rubber flexible cover.

[0012] Compared with the prior art, the beneficial effects of this utility model are: by setting up a flexible cover to form a physical isolation zone, when maintenance personnel approach the work, its outwardly expanding flexible sleeve can prevent the head or body from accidentally colliding with the lower end of the nozzle body in advance, reducing the risk of scratches or impacts, avoiding safety accidents, and improving the service life of the nozzle. The setting of the connecting sleeve facilitates subsequent disassembly, assembly, maintenance and replacement. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is an exploded view of the present invention.

[0015] Figure 2 This is one of the perspective views of this utility model.

[0016] Figure 3 This is the second perspective view of the present invention.

[0017] Figure 4 This is a perspective view of the flexible cover in this utility model.

[0018] In the picture:

[0019] 100. Nozzle body; 110. Water outlet; 120. Annular part;

[0020] 200. Connecting sleeve; 210. Annular groove;

[0021] 300. Flexible cover; 310. Annular limiting protrusion;

[0022] 400. Connecting structure; 410. Opening; 420. Limiting port; 421. Arc groove; 430. Connecting protrusion. Detailed Implementation

[0023] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0024] In the description of the embodiments of this utility model, it should be understood that if the embodiments of this utility model involve directional indications, such as up, down, left, right, front, back, inside, outside, etc., the orientation or positional relationship of the indications is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the embodiments of this utility model and simplifying the description, and is not intended to 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, it should not be construed as a limitation of this utility model.

[0025] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] In this embodiment of the invention, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part of a structure. They can be mechanical or electrical connections. They can be direct connections or indirect connections through an intermediate medium, and can represent the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention based on the specific circumstances.

[0027] like Figures 1 to 4 As shown in the figure, this utility model embodiment provides a fire-fighting water mist nozzle, including a nozzle body 100, a connecting sleeve 200, and a flexible cover 300.

[0028] The nozzle body 100 has a water outlet 110 at its lower end. A connecting sleeve 200 is fitted onto the nozzle body 100 and connected to it via a connecting structure 400. A flexible cover 300 is snapped into the connecting sleeve 200 and is positioned around the water outlet 110. The cross-sectional area of ​​the flexible cover 300 gradually increases along the water outlet direction. The lower end of the flexible cover 300 is lower than the water outlet 110. Specifically, the flexible cover 300 is a rubber flexible cover 300. The flexible cover 300 forms a physical isolation zone. When maintenance personnel approach for work, its outwardly expanding flexible sleeve can prevent accidental head or body collisions with the lower end of the nozzle body 100, reducing the risk of scratches or impacts, avoiding safety accidents, and improving the service life of the nozzle. The connecting sleeve 200 facilitates subsequent disassembly, assembly, maintenance, and replacement.

[0029] In one embodiment, the connecting structure 400 includes an opening 410, a limiting port 420, and a connecting protrusion 430. The opening 410 and the limiting port 420 are both located on the outer wall of the connecting sleeve 200. The opening 410 extends vertically and penetrates the upper end of the connecting sleeve 200. The limiting port 420 extends circumferentially along the connecting sleeve 200 and is connected at one end to the opening 410, forming an L-shaped bayonet structure. Furthermore, the connecting protrusion 430 is located on the outer wall of the nozzle body 100 and is adapted to the opening 410 and the limiting port 420. The connecting protrusion 430 can pass through the opening 410 and be limited at the limiting port 420. The vertical opening 410 facilitates the quick insertion of the connecting protrusion 430, and the circumferentially located limiting port 420 allows the connecting sleeve 200 to be rotated and locked. Installation or disassembly can be completed without additional tools, and the overall structure is simple.

[0030] In one embodiment, the upper inner wall of the limiting port 420 is provided with an arc-shaped groove 421 that is adapted to the connecting protrusion 430. The connecting protrusion 430 can be limited in the arc-shaped groove 421. The arc-shaped groove 421 can play a certain limiting role, prevent rotation and loosening, and disperse stress, reducing mechanical wear during long-term use.

[0031] In one embodiment, an annular portion 120 extending radially outward is provided on the outer side wall of the nozzle body 100. When the upper end of the connecting sleeve 200 abuts against the lower end of the annular portion 120, the connecting protrusion 430 abuts against the inner bottom wall of the opening 410 and corresponds to the limiting port 420. That is, the annular portion 120 is used for limiting, thereby improving the convenience of operation.

[0032] In one embodiment, in order to enable the flexible cover 300 to be secured on the nozzle body 100, an annular limiting protrusion 310 is provided on the inner side wall of the upper end of the flexible cover 300, and an annular groove 210 corresponding to and adapted to the annular limiting protrusion 310 is provided on the outer side wall of the connecting sleeve 200. The annular limiting protrusion 310 can be limited to the annular groove 210. The overall structure is simple, easy to operate, and facilitates subsequent disassembly, assembly, maintenance and replacement of the flexible cover 300.

[0033] In one embodiment, the sidewalls of the flexible cover 300 are bent outward to prevent the flexible cover 300 from affecting the operation of the nozzle body 100 and the spraying effect, and to improve the stability of the flexible cover 300 structure and extend its service life.

[0034] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements 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 fire-fighting water mist sprinkler characterized by, The device includes a nozzle body, a connecting sleeve, and a flexible cover. The nozzle body has a water outlet at its lower end. The connecting sleeve is fitted onto the nozzle body and connected to it via a connecting structure. The flexible cover is snapped into the connecting sleeve and is arranged around the water outlet. The cross-sectional area of ​​the flexible cover gradually increases along the water outlet direction, and the lower end of the flexible cover is lower than the water outlet.

2. A fire-fighting water mist nozzle according to claim 1, characterized in that, The connecting structure includes an opening, a limiting port, and a connecting protrusion. The opening and the limiting port are both opened on the outer side wall of the connecting sleeve. The opening extends vertically and penetrates the upper end of the connecting sleeve. The limiting port extends circumferentially along the connecting sleeve and one end is connected to the opening. The connecting protrusion is disposed on the outer side wall of the nozzle body and is adapted to the opening and the limiting port. The connecting protrusion can pass through the opening and be limited at the limiting port.

3. A fire-fighting water mist nozzle according to claim 2, characterized in that, The upper inner wall of the limiting port is provided with an arc-shaped groove that is adapted to the connecting protrusion, and the connecting protrusion can be limited to the arc-shaped groove.

4. A fire-fighting water mist nozzle according to claim 2, characterized in that, The outer side wall of the nozzle body is provided with an annular portion extending radially outward. When the upper end of the connecting sleeve abuts against the lower end of the annular portion, the connecting protrusion abuts against the inner bottom wall of the opening and corresponds to the limiting port.

5. A fire-fighting water mist nozzle according to claim 1, characterized in that, An annular limiting protrusion is provided on the inner side wall of the upper end of the flexible cover, and an annular groove corresponding to and adapted to the annular limiting protrusion is provided on the outer side wall of the connecting sleeve, and the annular limiting protrusion can be limited to the annular groove.

6. A fire-fighting water mist nozzle according to any one of claims 1 to 5, characterized in that, The sidewalls of the flexible cover are bent outwards.

7. A fire-fighting water mist nozzle according to any one of claims 1 to 5, characterized in that, The flexible cover is a rubber flexible cover.

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