Adjustable diffusion type fire injection device for campus fire protection

Abstract

The utility model relates to the technical field of fire fighting, specifically relates to a kind of adjustable diffusion fire-fighting injection device for campus fire fighting, including water inlet cavity, mounting seat and glass tube filled with heat-sensitive liquid, the mounting seat is fixedly arranged in water inlet cavity bottom by support arm, the water inlet cavity bottom is provided with plug, and glass tube is fixedly arranged in plug inside.The utility model, by setting splashing water leaf that can rotate around connecting shaft and the limiting ring matched with it, fixed ring, so that in normal state, both make splashing water leaf fold around glass tube, reduce radial space occupation, form physical barrier and reduce the risk of glass tube accidental touch damage, ensure the safety of sensing element, splashing water leaf can be turned over and unfolded under the action of water flow impact force and gravity after glass tube explosion, flexible presetting and reliable fixing of splashing water pan unfolding angle are realized, and water spray coverage is effectively increased.

Description

Technical Field

[0001] This utility model relates to the field of fire protection technology, specifically to an adjustable diffusion-shaped fire spray device for campus fire protection. Background Technology

[0002] Campuses are places where people gather in large numbers, and various teaching and living activities are frequent, which poses many fire hazards. Fire sprinkler systems, as a key part of the campus fire protection system, can quickly spray water to extinguish fires when they occur, and are an important line of defense to ensure campus safety.

[0003] Currently, traditional closed-type sprinkler heads are commonly installed on school campuses. Their core mechanism relies on the temperature-controlled opening and closing of a heat-sensitive element. At room temperature, the glass body supports the sealing element to block the water flow. When the ambient temperature rises to the nominal operating value, the glass body bursts, and pressurized water is sprayed out and evenly distributed through the splash plate to extinguish the fire.

[0004] However, existing systems have limitations in practical use. Because existing splash guards are typically fixed to the nozzles, their structure is simple, and their installation and movement range are relatively limited, resulting in a small splashing area and thus limiting the effective fire-fighting zone, causing inconvenience. Furthermore, considering the unique characteristics of the school environment—active students with diverse and extensive activities—the glass body of traditional nozzles is directly exposed, making it easy for students to accidentally touch and break the glass, potentially triggering the spray. This not only wastes water but also disrupts normal teaching and living order, seriously affecting the proper use of the device. Therefore, this paper proposes an adjustable diffusion-shaped fire sprinkler system for campus fire protection to solve the above problems. Utility Model Content

[0005] To address the aforementioned shortcomings of existing technologies, this utility model provides an adjustable diffusion-shaped fire spray device for campus fire fighting. It effectively solves the problems of existing technologies where the splash plate is usually fixedly installed on the spray head, resulting in a simple structure and relatively limited setting and movement range, which leads to a small splashing range and a limited effective area for fire extinguishing. Considering the special nature of the campus environment, the glass body of traditional spray heads is directly exposed, and students are very likely to accidentally touch the glass body during daily activities, causing the glass body to break and thus erroneously triggering the spray state.

[0006] To achieve the above objectives, this utility model provides the following technical solution: This utility model provides an adjustable diffusion-shaped fire spray device for campus fire protection, comprising: The system comprises an inlet chamber, a mounting base, and a glass tube filled with a heat-sensitive liquid. The mounting base is fixedly mounted at the bottom of the inlet chamber via support arms. A plug is provided at the bottom of the inlet chamber, and the glass tube is fixedly mounted inside the plug. The mounting base is provided with a splash plate composed of multiple sets of splash blades. A groove is formed on the outer wall of the mounting base. A folded block is fixedly mounted at one end of each splash blade near the mounting base, and the folded block is rotatably connected to the groove via a connecting shaft. A limit ring is fixedly mounted on the outer wall of the glass tube via a connecting rod. The limit ring is movably fitted onto the outer ends of the multiple splash blades to restrict the splash blades from spreading outward. A fixing ring is fixedly mounted between the multiple sets of support arms to restrict the splash blades from approaching and squeezing the glass tube inward.

[0007] Preferably, a slider is fixedly provided on the outer wall of the connecting shaft, and a groove is provided on the inner wall of the groove, and the slider is slidably engaged in the groove.

[0008] Preferably, the outer wall of the slider is provided with a connecting groove, and a positioning block is slidably engaged with the inner wall of the connecting groove.

[0009] Preferably, the inner wall of the chute has a positioning opening, and the positioning block is mated and engaged in the positioning opening.

[0010] Preferably, a compression spring is fixedly provided on the inner wall of the connecting groove, and the other end of the compression spring is fixedly connected to the positioning block. In its natural state, the compression spring pushes the positioning block to move out of the connecting groove.

[0011] Preferably, the top of the water inlet cavity is provided with a threaded interface for connecting to the fire protection pipe network.

[0012] The technical solution provided by this utility model has the following advantages compared with the known prior art: In this invention, by setting a water-spraying blade that can rotate around the connecting shaft and a limiting ring and a fixing ring that cooperate with it, the water-spraying blade can be retracted and surround the glass tube under normal conditions, reducing the radial space occupation, forming a physical barrier to reduce the risk of accidental damage to the glass tube, ensuring the safety of the sensing element, significantly reducing the risk of false activation due to accidental contact, and greatly improving the safety and reliability of use in the special environment of the campus. In the event of the glass tube bursting, the water-spraying blade can be flipped and unfolded under the impact of water flow and gravity, realizing flexible preset and reliable fixation of the water-spraying plate unfolding angle, effectively increasing the water spray coverage area. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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 a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the unfolded structure of the splash plate of this utility model; Figure 3 This is a schematic diagram of the limiting ring structure of this utility model; Figure 4 This is a schematic diagram of the splash blade structure of this utility model; Figure 5 This is a cross-sectional view of the slider structure of this utility model; Figure 6 This is a schematic diagram of the slide groove structure of this utility model.

[0015] Reference numerals in the attached drawings: 1. Water inlet chamber; 101. Plug; 2. Mounting base; 201. Fixing ring; 3. Glass tube; 4. Splash blade; 401. Folded block; 402. Connecting shaft; 403. Slider; 404. Connecting groove; 405. Compression spring; 406. Positioning block; 407. Slide groove; 408. Positioning port; 5. Limiting ring; 501. Connecting rod. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0017] The present invention will be further described below with reference to the embodiments.

[0018] See attached document Figure 1-6 An adjustable diffusion-type fire spray device for campus fire protection, comprising: The system consists of an inlet chamber 1, a mounting base 2, and a glass tube 3 filled with a heat-sensitive liquid. The mounting base 2 is fixedly installed at the bottom of the inlet chamber 1 via a support arm. A plug 101 is located at the bottom of the inlet chamber 1, and the glass tube 3 is fixedly installed within the plug 101. When water from the fire hydrant network enters the inlet chamber 1 through the threaded interface, it is temporarily stored there, awaiting subsequent triggering for spraying. The glass tube 3 acts as a sensing element, detecting changes in ambient temperature through the internal heat-sensitive liquid. When the ambient temperature rises to the nominal operating value, the glass tube 3 bursts, releasing pressurized water. The nozzle 101 sprays water to extinguish the fire. The mounting base 2 is equipped with a splash plate consisting of multiple sets of splash blades 4. There are 22 splash blades 4, arranged in two groups, symmetrically distributed on both sides of the support arm. A groove is formed on the outer wall of the mounting base 2. A folded block 401 is fixedly installed at one end of each splash blade 4 near the mounting base 2, and the folded block 401 is rotatably connected to the groove via a connecting shaft 402. A limit ring 5 is fixedly installed on the outer wall of the glass tube 3 via a connecting rod 501. The limit ring 5 is movably fitted onto the outer ends of multiple splash blades 4 to limit... The splash blades 4 spread outwards. Under normal circumstances, the splash blades 4 are in their initial position, with multiple splash blades 4 surrounding the glass tube 3, providing some protection and reducing the chance of contact with the glass tube 3. This also helps to reduce the space occupied on the plane. When the spray is triggered, the glass tube 3 bursts, causing the connecting rod 501 to detach, which in turn causes the limiting ring 5 to detach. Through gravity and the impact of the water flow, the splash blades 4 rotate downwards, from a vertical position to a horizontal position, with an unfolding angle of up to 90 degrees, thus splashing water... The water spray plate unfolds, enabling the water flow to diffuse and spray. Under reasonable water pressure conditions, the sprayed water flow is broken up and diffused by the unfolded water spray plate, forming a water spray coverage area with a diameter of up to 8 meters. This efficiently covers the target area and achieves a wider range of fire extinguishing effects, greatly improving the practicality and reliability of the fire spray device. Fixed rings 201 are fixedly installed between multiple sets of support arms. The fixed rings 201 are located between the glass tube 3 and the water spray blades 4, which restrict the movement range of the water spray blades 4 and prevent the water spray blades 4 from approaching and squeezing the glass tube 3.

[0019] A slider 403 is fixedly installed on the outer wall of the connecting shaft 402, and a groove 407 is opened on the inner wall of the groove. The slider 403 is slidably engaged in the groove 407. By restricting the slider 403 to slide in the groove 407, the rotation range of the splash blade 4 is limited, thereby preventing the splash blade 4 from rotating excessively and affecting the diffusion effect of the water flow.

[0020] The outer wall of the slider 403 has a connecting groove 404, and the inner wall of the connecting groove 404 is slidably engaged with a positioning block 406. The inner wall of the slide groove 407 has a positioning opening 408, and the positioning block 406 is engaged and locked in the positioning opening 408. When the splash blade 4 flips downward, the slider 403 slides downward along the inner wall of the slide groove 407, causing the positioning block 406 to rotate downward. When the positioning block 406 moves to a position aligned with the positioning opening 408, the positioning block 406 moves towards the positioning opening 408, and the end of the positioning block 406 is inserted into and locked in the positioning opening 408, thereby limiting the position of the splash blade 4 and preventing the splash blade 4 from shaking randomly when the water flow is unstable, thus improving the stability of use.

[0021] A compression spring 405 is fixedly installed on the inner wall of the connecting groove 404, and the other end of the compression spring 405 is fixedly connected to the positioning block 406. In the natural state, the compression spring 405 pushes the positioning block 406 to move out of the connecting groove 404. Under the action of the compression spring 405, the positioning block 406 is tightly stuck in the positioning port 408, forming a stable connection structure that is not easy to loosen or fall off, thereby improving the stability and reliability of positioning and ensuring the normal operation of the component.

[0022] The top of the water inlet chamber 1 is provided with a threaded interface for connecting to the fire protection pipe network, so as to introduce and guide high-pressure water flow.

[0023] Working principle: In use, the device is connected to the fire protection pipe network through the threaded interface at the top of the water inlet chamber 1. Under normal conditions, the glass tube 3 filled with heat-sensitive liquid seals the plug 101 at the bottom of the water inlet chamber 1, blocking the water flow. At the same time, the limiting ring 5, which is fixed to the outer wall of the glass tube 3 by the connecting rod 501, is movably sleeved on the outer end of multiple splash blades 4. Its mechanical constraint force restricts the splash blades 4 from swinging outward, keeping them in a closed state. At this time, these closed splash blades 4 surround the outside of the glass tube 3, which helps to reduce the radial space occupied by the entire device. Moreover, in conjunction with the fixing ring 201 located between the glass tube 3 and the splash blades 4, it prevents the splash blades 4 from swinging inward and squeezing the glass tube 3 when subjected to external force, thus forming a physical barrier for the glass tube 3, effectively reducing the risk of damage due to accidental contact, and further ensuring the safety of the sensing element. When a fire occurs in the protected area and the ambient temperature rises to a predetermined value, the glass tube 3 bursts due to heat, the seal of the plug 101 is released, and the pressurized water in the pipe network can rush into the water inlet chamber 1 and pass through the plug. As water jet 101 sprays downwards, the connecting rod 501 of the fixed limiting ring 5 detaches due to the loss of support from the glass tube 3. The radial constraint of the limiting ring 5 on the splash blade 4 is released, and under the impact of the water flow and its own gravity, the splash blade 4 begins to rotate downwards around its connecting shaft 402. The slider 403, fixed to the outer wall of the connecting shaft 402, slides along the groove 407 on the inner wall of the recess. This structure limits the rotation trajectory and maximum angle of the splash blade 4, preventing excessive rotation from affecting the water flow pattern. During the process, when the slider 403 slides to the set position, the positioning block 406 pops out and gets stuck in the positioning port 408 on the inner wall of the slide groove 407 under the continuous thrust of the compression spring 405. The splash blade 4 is precisely locked in this position, ensuring that the splash blade 4 will not shake randomly when the water pressure fluctuates, and the working state is stable and reliable. At this time, the sprayed water hits the splash plate formed by the splash blade 4 which has been unfolded to the predetermined angle, is crushed and spread into water droplets of the designed shape, and covers the target area, thereby achieving efficient fire extinguishing.

[0024] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. An adjustable diffused fire spray device for campus fire fighting, comprising a water inlet chamber (1), a mounting base (2), and a glass tube (3) filled with heat-sensitive liquid, wherein the mounting base (2) is fixedly installed at the bottom of the water inlet chamber (1) by a support arm, and a plug (101) is provided at the bottom of the water inlet chamber (1), and the glass tube (3) is fixedly installed in the plug (101), characterized in that: The mounting base (2) is provided with a splashing plate composed of multiple splashing blades (4). The outer wall of the mounting base (2) is provided with a groove. A folded block (401) is fixedly provided at one end of the splashing blade (4) near the mounting base (2). The folded block (401) is rotatably connected in the groove through a connecting shaft (402). A limiting ring (5) is fixedly provided on the outer wall of the glass tube (3) through a connecting rod (501). The limiting ring (5) is movably sleeved on the outer end of multiple splashing blades (4) to limit the splashing blades (4) from spreading outward. A fixing ring (201) is fixedly provided between multiple sets of support arms to limit the splashing blades (4) from moving inward to squeeze the glass tube (3).

2. The adjustable diffusion-shaped fire spray device for campus fire protection according to claim 1, characterized in that, A slider (403) is fixedly provided on the outer wall of the connecting shaft (402), and a groove (407) is provided on the inner wall of the groove, and the slider (403) is slidably engaged in the groove (407).

3. The adjustable diffusion-shaped fire spray device for campus fire protection according to claim 2, characterized in that, The outer wall of the slider (403) is provided with a connecting groove (404), and the inner wall of the connecting groove (404) is slidably engaged with a positioning block (406).

4. The adjustable diffusion-shaped fire spray device for campus fire protection according to claim 2, characterized in that, The inner wall of the slide (407) is provided with a positioning port (408), and the positioning block (406) is connected and locked in the positioning port (408).

5. An adjustable diffusion-type fire spray device for campus fire protection according to claim 3, characterized in that, A compression spring (405) is fixedly installed on the inner wall of the connecting groove (404), and the other end of the compression spring (405) is fixedly connected to the positioning block (406). In the natural state, the compression spring (405) pushes the positioning block (406) to move out of the connecting groove (404).

6. The adjustable diffusion-shaped fire spray device for campus fire protection according to claim 1, characterized in that, The top of the water inlet cavity (1) is provided with a threaded interface for connecting to the fire protection pipe network.

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