A fire sprinkler

Abstract

The application provides a fire sprinkler, and relates to the technical field of fire-fighting equipment, which comprises a mounting frame and a rotating part rotatably arranged on the mounting frame. The elastic element is arranged to connect the rotating part and the water outlet pipe, so that the single bent pipe is allowed to deviate under the counter-thrust of water pressure and to be linked with the misalignment of the guide hole to automatically reduce the flow of the problem pipeline. Meanwhile, the small-section auxiliary pipe on the water outlet pipe is used to spray water flow to impact the arc-shaped ring of the baffle disc, the generated counter-thrust and the increased splashing area with the deviation increase limit the deviation amplitude and assist the resetting, and form a protective water mist layer near the sprinkler to suppress the flame counterattack, so that the comprehensive improvement of the self-adaptive and balanced distribution of water flow, the dynamic stability of the structure and the operation safety is realized.

Description

Technical Field

[0001] This utility model relates to the field of fire-fighting equipment technology, and more specifically, to a fire sprinkler head. Background Technology

[0002] Fire sprinklers, as a key component of fire protection systems, play a crucial role in fire prevention and control. Traditional fire sprinklers are typically installed in fixed locations within buildings, such as ceilings, and trigger a water spray mechanism by sensing heat or smoke generated by a fire. Their design is primarily based on a fixed installation environment and usage scenario, providing a relatively stable spray direction and coverage area to extinguish fires in specific areas. After years of development, traditional fire sprinklers have become technologically mature and are widely used in fire safety assurance in various building locations, effectively reducing losses caused by fire accidents.

[0003] However, applying fire sprinklers to robots presents numerous challenges. Due to the high flexibility and mobility of robots during operation, their movement trajectories and postures are constantly changing. This makes it difficult for fire sprinklers mounted on robots to maintain a stable spray direction and precise spray position, easily leading to inaccurate spraying. In the face of complex and ever-changing fire scene environments, this inaccurate spraying problem can severely affect firefighting effectiveness, hindering timely and effective suppression of the fire source, and ultimately threatening the safety of people and property.

[0004] Therefore, we made improvements and proposed a fire sprinkler head. Utility Model Content

[0005] In order to achieve the above-mentioned objectives, this utility model provides a fire sprinkler head to improve the above-mentioned problems.

[0006] The application is as follows:

[0007] include:

[0008] Mounting rack;

[0009] A rotating part, rotatably mounted on the mounting bracket, has an inner cavity and further comprises:

[0010] The water inlet pipe is located on one side of the rotating part and extends into the inner cavity;

[0011] An elastic element is provided on the rotating part and forms the water outlet end;

[0012] The water outlet pipe is formed by at least three bent pipes sharing a common circumference water inlet end, the water inlet end having a spherical cavity communicating with the water outlet end of the elastic element, and the water inlet end being disposed on the elastic element;

[0013] The inlet tube is fixedly installed in the inner cavity of the rotating part and guides the water flow from the inlet tube to the outlet tube.

[0014] A guide tube is disposed within the spherical cavity of the inlet pipe, with a gap between the guide tube and the spherical cavity. A straight tube is connected to the inlet tube and has the following features:

[0015] The guide holes are circumferentially distributed on the guide ball tube and guide the water flow towards the water outlet path of the outlet pipe;

[0016] When a single bend in the outlet pipe is pushed back by water pressure to the point of deforming the elastic element, the guide hole on the guide ball tube is misaligned with the water outlet path of the corresponding bend in the outlet pipe.

[0017] Preferred options also include:

[0018] A baffle plate is disposed on the rotating part and coaxially disposed on the back side of the water outlet pipe. A recessed groove is formed on the surface adjacent to the water outlet pipe, and the groove has the following features:

[0019] The ring is coaxially set in the recessed groove of the baffle, and its arc-shaped area gradually increases towards the center.

[0020] Preferred options also include:

[0021] A secondary pipe is installed on the outlet pipe and is connected to the outlet pipe to form a water passage path towards the baffle plate. The water passage cross-section of the secondary pipe is smaller than the water passage cross-section of a single bend in the outlet pipe.

[0022] Preferably, the cross-sectional area of ​​the elastic element that connects with the water outlet pipe is larger than the cross-sectional area of ​​the straight rod disposed between the liquid inlet ball pipe and the guide ball pipe.

[0023] Preferably, the elastic element comprises:

[0024] An elastic bucket is mounted on the rotating part and is fixedly connected to the outlet pipe;

[0025] A spring is arranged around the periphery of the elastic bucket, with its two ends contacting the rotating part and the water outlet pipe, respectively.

[0026] A bellows is arranged around the periphery of the elastic bucket, forming a sealed annular cavity that covers the elastic bucket and the spring.

[0027] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0028] In the scheme of this application:

[0029] To address the problems in existing technologies, an elastic element is used to connect the rotating part and the outlet pipe, allowing a single bent pipe to shift under water pressure and the guide hole to misalign, automatically reducing the flow in the problematic pipe. Simultaneously, a small-section secondary pipe on the outlet pipe sprays water to impact the arc-shaped ring of the baffle. The resulting reverse thrust and the increased splash area with the shift limit the shift amplitude and assist in resetting, while also forming a protective water mist layer near the nozzle to suppress flame backlash. This achieves a comprehensive improvement in adaptive and balanced water flow distribution, dynamic structural stability, and operational safety. Attached Figure Description

[0030] Figure 1 A front view of a fire sprinkler head provided in this application;

[0031] Figure 2 A bottom view of a fire sprinkler head provided for this application;

[0032] Figure 3 A cross-sectional view of a fire sprinkler head provided in this application.

[0033] The image shows:

[0034] 1. Mounting bracket; 2. Rotating part; 21. Inlet pipe; 24. Elastic element; 3. Baffle; 31. Ring; 4. Outlet pipe; 41. Sub-pipe; 5. Inlet ball pipe; 6. Guide ball pipe; 61. Guide hole. Detailed Implementation

[0035] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0036] For an example, please refer to... Figure 1 , Figure 2 and Figure 3 A fire sprinkler head, comprising:

[0037] Mounting bracket 1;

[0038] Rotating part 2, rotatably mounted on mounting bracket 1, has an inner cavity, and further includes:

[0039] Water inlet pipe 21 is located on one side of the rotating part 2 and extends into the inner cavity;

[0040] The elastic element 24 is provided on the rotating part 2 and forms the water outlet end;

[0041] The water outlet pipe 4 is formed by at least three bent pipes sharing a common circumference water inlet end. The water inlet end has a spherical cavity that communicates with the water outlet end of the elastic member 24. The water inlet end is disposed on the elastic member 24.

[0042] The liquid inlet tube 5 is fixedly installed in the inner cavity of the rotating part 2 and guides the water flow at the water inlet pipe 21 to flow towards the water outlet pipe 4.

[0043] The guide tube 6 is installed in the spherical cavity of the water inlet pipe 21, and there is a gap between the guide tube 6 and the spherical cavity. A straight tube is installed in communication with the liquid inlet tube 5, and has the following features:

[0044] The guide holes 61 are circumferentially distributed on the guide ball tube 6 and guide the water flow to move towards the water outlet path of the water outlet pipe 4;

[0045] When a single bend in the outlet pipe 4 is pushed back by water pressure to the point of deforming the elastic element 24, the guide hole 61 on the guide ball pipe 6 is misaligned with the water outlet path of the corresponding bend in the outlet pipe 4.

[0046] When water enters through the inlet pipe 21, passes through the inlet ball pipe 5 and the straight pipe guide ball pipe 6, and then flows evenly from the circumferentially distributed guide holes 61 to each bend of the outlet pipe 4, driving the water flow out. At this time, if a single bend experiences a surge in counter-thrust due to external resistance or abnormal water pressure, this force will be transmitted to the elastic component 24 fixedly connected to it, which includes an elastic bucket, a spring, and a bellows, overcoming its resistance and forcing the entire outlet pipe 4 assembly to deflect relative to the stationary guide ball pipe 6. This deflection brings two key effects: First, the guide hole 61 corresponding to the bend is misaligned with the water outlet path, significantly reducing the water flow to the problematic bend and directly reducing the root cause of the excessive counter-thrust in the pipe; second, the offset of the outlet pipe 4 will cause the secondary pipe 41 on it to move synchronously, changing its angle of impact with the ring 31 on the baffle 3.

[0047] The high-speed water jet from the secondary pipe 41 impacts the circular ring 31, which has a special arc-shaped profile and an area that gradually increases towards the center, due to its small cross-section. As the offset angle of the outlet pipe 4 increases, the impact contact area between the water jet from the secondary pipe 41 and the circular ring 31 also increases. This produces two effects: on the one hand, the reaction force generated by the water jet impacting the arc-shaped circular ring 31 is opposite in direction to the offset direction, forming a reverse thrust torque on the outlet pipe 4, which physically limits its further offset and pushes it to gradually return to its original position; on the other hand, the water jet impacting the circular ring 31 is strongly splashed and diffused.

[0048] Furthermore, the water outlet direction of the secondary pipe 41 gradually moves towards the plane of the vertical ring 31 during the offset of the water outlet pipe 4, resulting in the replenishment of the counter-thrust. At the same time, a dense water mist protection area is formed near the offset water outlet pipe 4, which effectively blocks the flame backlash and protects the nozzle body.

[0049] Meanwhile, because the misaligned guide hole 61 has significantly reduced the water inflow into the problematic bend, the counter-thrust force generated by the pipe itself is also continuously weakening. Under the combined effect of the elastic restoring spring of the elastic element 24, the counter-thrust torque generated by the water flow impacting the ring 31 in the elastic bucket and the secondary pipe 41, and the weakening counter-thrust force of the problematic bend itself, the deflected outlet pipe 4 assembly is stably and effectively pushed back to its initial position. Once reset, the guide hole 61 is realigned with each bend, the flow rate is restored to equilibrium, the water flow in the secondary pipe 41 resumes its impact on the baffle 3, the counter-thrust torque decreases, and the system returns to a stable spray state.

[0050] Also includes:

[0051] A baffle 3 is mounted on the rotating part 2 and coaxially positioned on the back side of the water outlet pipe 4. A recessed groove is formed on the surface adjacent to the water outlet pipe 4, and the groove has the following features:

[0052] The ring 31 is coaxially disposed in the recessed groove of the baffle 3, and its arc-shaped area gradually increases towards the center.

[0053] This causes the impact contact area to increase as the offset angle increases when the water jet from the secondary pipe 41 impacts it, thus generating a stronger reaction force.

[0054] Also includes:

[0055] A secondary pipe 41 is installed on the outlet pipe 4 and is connected to the outlet pipe 4 to form a water passage path in the direction of the baffle 3. The water passage cross section of the secondary pipe 41 is smaller than the water passage cross section of a single bend in the outlet pipe 4.

[0056] The cross-sectional area of ​​the elastic element 24 that connects with the water outlet pipe 4 is larger than the cross-sectional area of ​​the straight rod installed between the liquid inlet ball pipe 5 and the guide ball pipe 6.

[0057] Because the outlet pipe 4 deflected, the water flow in the spherical cavity of the outlet pipe 4 increased, causing the water flow to begin to flow into the inner cavity of the rotating part 2. This caused the two water flows to collide, causing the elastic bucket to fill and expand during the collision of the two water flows, allowing the outlet pipe 4 to quickly return to its initial state.

[0058] The elastic element 24 includes:

[0059] An elastic bucket is mounted on the rotating part 2 and is fixedly connected to the water outlet pipe 4;

[0060] A spring is arranged around the periphery of the elastic bucket, with its two ends contacting the rotating part 2 and the water outlet pipe 4, respectively.

[0061] A bellows is arranged around the periphery of the elastic bucket, forming a sealed annular cavity that covers the elastic bucket and the spring;

[0062] The elastic bucket connects the rotating part 2 and the outlet pipe 4 and transmits force; the spring provides the main restoring force; the bellows forms a dynamic seal to prevent high-pressure water from leaking from the inner cavity of the rotating part 2, while allowing the outlet pipe 4 to make necessary offset movements.

[0063] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A fire sprinkler head, characterized in that, include: Mounting rack; A rotating part, rotatably mounted on the mounting bracket, has an inner cavity and further comprises: The water inlet pipe is located on one side of the rotating part and extends into the inner cavity; An elastic element is provided on the rotating part and forms the water outlet end; The water outlet pipe is formed by at least three bent pipes sharing a common circumference water inlet end, the water inlet end having a spherical cavity communicating with the water outlet end of the elastic element, and the water inlet end being disposed on the elastic element; The inlet tube is fixedly installed in the inner cavity of the rotating part and guides the water flow from the inlet tube to the outlet tube. A guide tube is disposed within the spherical cavity of the inlet pipe, with a gap between the guide tube and the spherical cavity. A straight tube is connected to the inlet tube and has the following features: The guide holes are circumferentially distributed on the guide ball tube and guide the water flow towards the water outlet path of the outlet pipe; When a single bend in the outlet pipe is pushed back by water pressure to the point of deforming the elastic element, the guide hole on the guide ball tube is misaligned with the water outlet path of the corresponding bend in the outlet pipe.

2. A fire sprinkler head according to claim 1, characterized in that, Also includes: A baffle plate is disposed on the rotating part and coaxially disposed on the back side of the water outlet pipe. A recessed groove is formed on the surface adjacent to the water outlet pipe, and the groove has the following features: The ring is coaxially set in the recessed groove of the baffle, and its arc-shaped area gradually increases towards the center.

3. A fire sprinkler head according to claim 2, characterized in that, Also includes: A secondary pipe is installed on the outlet pipe and is connected to the outlet pipe to form a water passage path towards the baffle plate. The water passage cross-section of the secondary pipe is smaller than the water passage cross-section of a single bend in the outlet pipe.

4. A fire sprinkler head according to claim 3, characterized in that, The cross-sectional area of ​​the elastic element that connects with the water outlet pipe is larger than the cross-sectional area of ​​the straight rod installed between the liquid inlet ball pipe and the guide ball pipe.

5. A fire sprinkler head according to claim 4, characterized in that, The elastic element includes: An elastic bucket is mounted on the rotating part and is fixedly connected to the outlet pipe; A spring is arranged around the periphery of the elastic bucket, with its two ends contacting the rotating part and the water outlet pipe, respectively. A bellows is arranged around the periphery of the elastic bucket, forming a sealed annular cavity that covers the elastic bucket and the spring.

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