An embedded sprinkler device

Abstract

The utility model discloses an embedded spraying device, including the protective shell, the inside of protective shell is equipped with the shower nozzle, and the both sides spacing limiting mechanism of shower nozzle, and the limiting mechanism includes the support frame fixed in the top of shower nozzle, and the top of support frame is connected with fusible alloy pin, and the inside of protective shell is equipped with the mounting groove, and the inside mounting groove is installed with the mounting seat, and the top of mounting seat is equipped with the limit ring, and the limit ring is matched with fusible alloy pin, the utility model discloses a protective shell is wrapped in the inside with shower nozzle, effectively avoided in the daily use, the decoration construction, the cleaning maintenance etc. in the process because accidental collision, tool scratch leads to glass bubble breakage or mis -spray accident. Meanwhile, in the protective shell is provided by the heat -sensitive locking mechanism that fusible alloy pin and limit ring constitute, when the fire occurs, and the environmental temperature rises to the set value, fusible alloy softens or fuses, and the shower nozzle falls to the working position under the action of gravity automatically, ensure that fire extinguishing system can respond in time, and have high protection and high reliability.

Description

Technical Field

[0001] This utility model relates to the field of fire sprinkler technology, and more specifically, to an embedded sprinkler device. Background Technology

[0002] In modern building fire protection systems, automatic sprinkler systems are widely used in various civil and industrial buildings such as office buildings, shopping malls, hotels, and underground garages as important facilities for extinguishing fires in the early stages. When a fire occurs, the temperature of the organic solution in the fire sprinkler head rises and expands until the glass body breaks. The ball seat and seals lose their support and are washed away by the water flow, thus starting to spray water to extinguish the fire.

[0003] However, despite the mature technology and reliable response of this glass bulb sprinkler head, significant safety hazards and usage defects still exist during actual installation and use. Because sprinkler heads are typically exposed directly below the ceiling or on the structural surface after installation, their temperature-sensing element (glass bulb) and nozzles lack effective physical protection and are in an "exposed state." During daily use, renovation, equipment maintenance, cleaning, or material handling, they are highly susceptible to accidental collisions with external objects, tool scratches, or impacts from falling objects. Even a minor impact can cause the glass bulb to rupture, leading to system malfunction—a sudden spray of water. This not only wastes a significant amount of water but can also cause secondary accidents such as electrical short circuits, damage to goods, and slippery surfaces causing people to fall. Utility Model Content

[0004] In view of the problems in the related technologies, this utility model proposes an embedded spraying device to overcome the above-mentioned technical problems existing in the existing related technologies.

[0005] Therefore, the specific technical solution adopted by this utility model is as follows:

[0006] An embedded spray device includes a protective shell, a spray head inside the protective shell, and limiting mechanisms on both sides of the spray head. The limiting mechanisms include a support frame fixed to the top of the spray head, a fusible alloy pin connected to the top of the support frame, an installation groove inside the protective shell, an installation seat inside the installation groove, and a limiting ring at the top of the installation seat, which matches the fusible alloy pin.

[0007] Furthermore, to facilitate the disassembly and installation of the mounting base, a mounting plate is connected to one side of the mounting base, and the mounting plate is connected to the protective shell by bolts.

[0008] Furthermore, to prevent the spray head from shifting during descent, a limiting groove is provided inside the protective shell, which matches the support frame.

[0009] Furthermore, to ensure the stability of the spray head after it has fallen, a first magnetic plate is connected to the bottom of the support frame, and a second magnetic plate is connected to the bottom of the limiting groove. The first magnetic plate and the second magnetic plate are matched.

[0010] Furthermore, to facilitate the connection of the sprinkler head to the water supply system, a telescopic pipe is connected to the top of the sprinkler head, and one end of the telescopic pipe is connected to a spiral connector.

[0011] Furthermore, the spiral joint is fixed to the top of the protective shell.

[0012] Furthermore, to ensure that external hot air can quickly enter the protective shell, the fusible alloy pin is heated.

[0013] Furthermore, a fixing groove is provided above the limiting groove, and the fixing groove matches the fusible alloy pin.

[0014] The beneficial effects of this utility model are as follows:

[0015] (1) This device uses a protective shell to enclose the sprinkler head, which effectively avoids glass bulb breakage or accidental spraying accidents caused by accidental collisions or tool scratches during daily use, decoration construction, cleaning and maintenance, and significantly improves the operational safety and service life of the equipment. At the same time, a heat-sensitive locking mechanism consisting of a fusible alloy pin and a limiting ring is set inside the protective shell. When a fire occurs and the ambient temperature rises to a set value (such as 68°C), the fusible alloy softens or melts, and the sprinkler head automatically falls to the working position under its own weight, ensuring that the fire extinguishing system can respond in a timely manner, and has both high protection and high reliability.

[0016] (2) A first magnetic plate is installed at the bottom of the support frame, and a second magnetic plate is installed at the corresponding position at the bottom of the limiting groove. The two magnetic plates attract each other. After the sprinkler head is lowered, the magnetic attraction can effectively fix the position of the sprinkler head, eliminate the shaking caused by water flow impact or building vibration, and enhance the stability of the sprinkler head during the water spraying process. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments 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.

[0018] Figure 1 This is a front view of an embedded spraying device according to an embodiment of the present utility model;

[0019] Figure 2 This is a side view of an embedded spray device according to an embodiment of the present utility model;

[0020] Figure 3 This is an internal structural diagram of the protective shell of an embedded spray device according to an embodiment of the present utility model;

[0021] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0022] Figure 5 yes Figure 3 Enlarged diagram of point B in the middle.

[0023] In the picture:

[0024] 1. Protective shell; 2. Spray head; 3. Limiting mechanism; 301. Support frame; 302. Easily soluble alloy pin; 303. Mounting groove; 304. Mounting base; 305. Limiting ring; 4. Mounting plate; 5. Bolt; 6. Limiting groove; 7. First magnetic suction piece; 8. Second magnetic suction piece; 9. Telescopic tube; 10. Spiral joint; 11. Vent hole; 12. Fixing groove. Detailed Implementation

[0025] 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.

[0026] According to an embodiment of the present invention, an embedded spraying device is provided.

[0027] like Figures 1-4As shown, the embedded sprinkler device according to an embodiment of this utility model includes a protective shell 1, the shape of which is flush with or slightly lower than the ceiling plane, with a neat and beautiful appearance that can be effectively integrated into the interior decoration. The protective shell 1 houses a sprinkler head 2, which is completely contained within the protective shell 1 when not in operation, preventing exposure and thus preventing accidental impacts caused by external factors such as daily cleaning, construction, handling, or human contact. This significantly improves the safety and service life of the equipment. In the event of a fire, the organic solution in the sprinkler head 2 expands due to increased temperature until the glass breaks, and the ball seat and seals lose support and are washed away by the water flow, thus initiating the spraying of water for fire extinguishing. Limiting mechanisms 3 are located on both sides of the sprinkler head 2. The limiting mechanism 3 includes a support frame 301 fixed to the top of the sprinkler head 2, and a fusible alloy pin 302 connected to the top of the support frame 301. The fusible alloy pin 302 is made of a low-melting-point alloy material (such as a bismuth-tin-based alloy). Its melting point can be set to standard temperatures such as 68°C or 79°C depending on the application environment. As a thermal trigger element, it automatically releases the sprinkler head 2 in high-temperature fire conditions. The protective housing 1 has an internal mounting groove 303, inside which a mounting base 304 is installed. A limiting ring 305 is located at the top of the mounting base 304, matching the fusible alloy pin 302. When the sprinkler head 2 is in the retracted state, the fusible alloy pin 302 inserts into the limiting ring 305, forming a mechanical lock that firmly secures the support frame 301 and the sprinkler head 2 in a high position, preventing accidental fall in the absence of a fire. A mounting plate 4 is connected to one side of the mounting base 304, and the mounting plate 4 is connected to the protective housing 1 by bolts 5, enabling detachable modular assembly of the mounting base 304. This design not only improves assembly accuracy but also facilitates replacement and maintenance of the mounting base 304 during later maintenance.

[0028] like Figures 1-5As shown, the protective shell 1 has a limiting groove 6 inside, and the two arms of the support frame 301 are embedded in the limiting groove 6, which can slide up and down inside. This guiding structure effectively constrains the movement trajectory of the spray head 2, preventing it from deflecting, shaking or getting stuck during the fall, and ensuring that the spray head can vertically and smoothly detach from the protective shell 1 and enter the working position. The bottom end of the support frame 301 is connected to a first magnetic plate 7, and the bottom end of the limiting groove 6 is connected to a second magnetic plate 8. The first magnetic plate 7 and the second magnetic plate 8 match each other, and the two attract each other after the spray head 2 has completely fallen. The magnetic structure provides auxiliary positioning force when the nozzle reaches the lowest working position, eliminating slight shaking caused by water backflow or building vibration, and enhancing the stability of the nozzle during water spraying. The top of the spray head 2 is connected to a telescopic tube 9, one end of which is connected to a spiral joint 10. The spiral joint 10 is fixed at the top center of the protective shell 1 and is connected to the main fire protection pipeline of the building. The protective shell 1 is provided with vent holes 11, which ensure the rapid entry of high-temperature external smoke and enable the temperature sensing element to respond to temperature changes in a timely manner. A fixing groove 12 is provided above the limiting groove 6, and the fixing groove 12 is matched with the fusible alloy pin 302.

[0029] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0030] Under normal circumstances, the sprinkler head 2 is completely housed inside the protective casing 1. The limiting mechanisms 3 on both sides of the sprinkler head 2 are inserted into the limiting rings 305 on the mounting base 304 via fusible alloy pins 302 at the top of the support frame 301, forming a mechanical lock that stably fixes the sprinkler head 2 in a high position, preventing it from accidentally falling due to any non-fire factors. Under normal operating conditions, i.e., when the ambient temperature does not reach the melting point of the fusible alloy pins 302, the fusible alloy pins 302 have sufficient mechanical strength to support and fix the weight of the sprinkler head 2. Once a fire occurs, the ambient temperature rises rapidly to a set value (e.g., 68°C or 79°C), and the fusible alloy pins 302 begin to soften and eventually break due to their low melting point. At this time, the locking force originally provided by the fusible alloy pins 302 disappears, and the sprinkler head 2 moves downward along the limiting grooves 6 under its own gravity. During this process, the distance between the first magnetic plate 7 and the second magnetic plate 8 gradually shortens until the nozzle reaches its lowest working position, at which point they attract each other, providing additional positioning force to eliminate possible slight wobbling and enhancing the stability of the nozzle during water spraying. Simultaneously, the telescopic pipe 9 gradually unfolds as the sprinkler head 2 descends, maintaining a flexible connection between the nozzle and the water supply system, avoiding stress concentration or loosening issues that may occur with traditional rigid pipes. The spiral joint 10 is located at the center of the top of the protective housing 1, ensuring a sealed connection between the water supply system and the nozzle, effectively preventing leakage. Furthermore, the vent 11 on the protective housing 1 allows high-temperature external smoke to quickly enter the housing and directly act on the fusible alloy pin 302, ensuring that the temperature sensing element can detect temperature changes and trigger the release mechanism in the shortest possible time, greatly improving the fire response speed.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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. An embedded spray device, characterized in that, The device includes a protective shell (1), inside which a spray head (2) is provided. The spray head (2) is limited by a limiting mechanism (3) on both sides. The limiting mechanism (3) includes a support frame (301) fixed to the top of the spray head (2). A fusible alloy pin (302) is connected to the top of the support frame (301). The protective shell (1) has an installation groove (303) inside. An installation seat (304) is installed inside the installation groove (303). A limiting ring (305) is provided at the top of the installation seat (304). The limiting ring (305) matches the fusible alloy pin (302).

2. The embedded spray device according to claim 1, characterized in that, The mounting base (304) is connected to a mounting plate (4) on one side, and the mounting plate (4) is connected to the protective shell (1) by bolts (5).

3. An embedded spray device according to claim 1, characterized in that, The protective shell (1) has a limiting groove (6) inside, which matches the support frame (301).

4. An embedded spray device according to claim 1, characterized in that, The bottom end of the support frame (301) is connected to a first magnetic plate (7), and the bottom end of the limiting groove (6) is connected to a second magnetic plate (8). The first magnetic plate (7) and the second magnetic plate (8) are matched.

5. An embedded spray device according to claim 1, characterized in that, The top of the spray head (2) is connected to a telescopic tube (9), and one end of the telescopic tube (9) is connected to a spiral joint (10).

6. An embedded spray device according to claim 1, characterized in that, The spiral joint (10) is fixed to the top of the protective shell (1).

7. An embedded spraying device according to claim 1, characterized in that, The protective shell (1) is provided with a vent (11).

8. An embedded spray device according to claim 1, characterized in that, A fixing groove (12) is provided above the limiting groove (6), and the fixing groove (12) matches the fusible alloy pin (302).

Images