Building emergency fire fighting system

Abstract

The application relates to the technical field of emergency fire-fighting systems, in particular to a building emergency fire-fighting system. The manual switch valve reset difficulty problem in the prior art is solved, and the practicability of the equipment is improved. The structure comprises a fire-fighting tank body, a control valve is connected to the liquid outlet of the fire-fighting tank body, a control cavity is arranged in the control valve, a liquid inlet pipe and a liquid outlet pipe are connected to the control cavity, a valve core is arranged between the liquid inlet pipe and the liquid outlet pipe, an electric control assembly is arranged in the control cavity, an emergency button is arranged outside the control valve, and a first control structure for controlling the valve core to block or unblock the liquid inlet pipe and the liquid outlet pipe through the emergency button is arranged in the control cavity. In the embodiment, the design of the breakable beads in the prior art is replaced, after the valve is started through the emergency button, the first control structure is used for resetting, the breakable beads do not need to be disassembled and replaced, the emergency switch reset is more convenient, and the practicability is higher.

Description

Technical Field

[0001] This invention relates to the field of emergency fire protection system technology, specifically to a building emergency fire protection system. Background Technology

[0002] A building emergency fire protection system refers to fire protection facilities and systems designed to ensure a rapid response and effective emergency handling in the event of a fire or other emergency. Its purpose is to ensure the safe evacuation of personnel, the timely extinguishing of fires, the safe isolation of the area inside and outside the fire zone, and to minimize damage to property and personnel caused by fire.

[0003] To prevent power outages during fires, existing fire protection systems incorporate shatterproof beads in manually operated valves. In the event of a fire, operators can manually activate the system by breaking the shatterproof beads, minimizing the damage caused by the fire.

[0004] While this allows for emergency fire suppression during power outages, the following problems remain: when the fire suppression system is manually activated, the fire-fighting beads may be damaged and need to be replaced, which is a cumbersome process and increases the system maintenance time. Summary of the Invention

[0005] This invention proposes a building emergency fire protection system that solves the problem of difficulty in resetting manually operated valves in existing fire protection systems, thereby improving the practicality of the equipment.

[0006] The technical solution of the present invention is as follows:

[0007] A building emergency fire protection system includes a fire tank.

[0008] The outlet of the fire tank is connected to a control valve. The control valve has a control chamber, which is connected to an inlet pipe and an outlet pipe. A valve core is provided between the inlet pipe and the outlet pipe. An electrical control component is provided in the control chamber. An emergency button is provided outside the control valve. The control chamber has a first control structure for controlling the valve core to block the inlet pipe and the outlet pipe or to move away from the inlet pipe and the outlet pipe via the emergency button. The control chamber also has a second control structure for controlling the valve core to block the inlet pipe and the outlet pipe or to move away from the inlet pipe and the outlet pipe via the electrical control component.

[0009] Further, a liquid guiding hole is provided on the valve core, a first sliding rail is provided in the control cavity, the valve core is slidably connected to the first sliding rail, the control cavity is slidably connected to the valve core, a liquid inlet hole is provided on the first sliding rail close to the liquid inlet pipe side, a liquid outlet hole is provided on the first sliding rail close to the liquid outlet pipe side, the valve core abuts against both the liquid outlet hole and the liquid inlet hole at the same time, the liquid inlet hole and the liquid outlet hole are arranged on the movement track of the liquid guiding hole, a sliding rod is fixed on the valve core, the sliding rod is slidably connected to the first sliding rail, a first limiting bolt is fixed at the end of the sliding rod, a first limiting spring is sleeved on the sliding rod, and two ends of the first limiting spring are respectively fixedly connected to the first sliding rail and the valve core.

[0010] Further, the first control structure includes a first sliding rack, a second sliding rail is fixed in the control cavity, a first sliding groove is provided in the second sliding rail, the cross section of the first sliding groove is in a "convex" shape structure, the first sliding rack is slidably connected to the first sliding groove, the valve core is arranged within the stroke of the first sliding rack, a sliding column is fixed at the end of the first sliding rack away from the valve core, a mounting plate is provided at the end of the control cavity away from the valve core, the sliding column is slidably connected to the mounting plate, a second limiting bolt is further fixed at the end of the sliding column, a second limiting spring is sleeved on the sliding column, and two ends of the second limiting spring are respectively fixedly connected to the second limiting bolt and the mounting plate.

[0011] Further, a rotating shaft is rotatably connected in the control cavity, a first rotating gear is fixed on the rotating shaft, the first rotating gear meshes with the first sliding rack, a ratchet wheel is rotatably connected to the rotating shaft, a plurality of limiting blocks are rotatably connected to the first rotating gear, one end of each limiting block abuts against the ratchet wheel, and a third limiting spring is further provided on each limiting block, and two ends of the third limiting spring are respectively fixedly connected to the end of the limiting block away from the ratchet wheel and the first rotating gear.

[0012] Further, a second rotating gear is further provided on the rotating shaft, the second rotating gear is fixedly connected to the ratchet wheel, the emergency button is slidably connected in the control cavity, a second sliding rack is provided on the bottom side wall of the emergency button, the second sliding rack meshes with the second rotating gear, a reset cavity is further provided at the top of the control cavity, a third limiting bolt is provided in the reset cavity, the third limiting bolt is fixedly connected to the emergency button, a fourth limiting spring is sleeved on the emergency button, and two ends of the fourth limiting spring are respectively fixedly connected to the bottom of the reset cavity and the third limiting bolt.

[0013] Furthermore, the valve core is provided with a second sliding groove near the sliding rod end, the first sliding rail is provided with a limiting hole, the second sliding groove is provided with a sliding hole near the limiting hole, a locking block is slidably connected in the second sliding groove, and a fifth limiting spring is provided in the second sliding groove. The two ends of the fifth limiting spring are respectively fixedly connected to the second sliding groove and the locking block, and the locking block and the limiting hole are engaged.

[0014] Furthermore, the second control structure includes a telescopic component, the fixed end of which is fixedly connected to the control cavity, and the telescopic end of which abuts against the valve core.

[0015] Furthermore, the emergency button has a limiting notch on its side, there is a gap between the second sliding rack and the second rotating gear, there is a gap between the locking block and the locking groove when the telescopic member pushes the valve core to move, and the cross-section of the liquid guiding hole is a strip structure.

[0016] Furthermore, the first sliding rack is provided with an abutment post near the valve core end, and the end of the abutment post and the telescopic end of the telescopic member are both fixed with a buffer layer, which is made of rubber material.

[0017] Furthermore, the electronic control component includes a temperature sensor and a flue gas sensor, both of which are electrically connected to the telescopic component.

[0018] The working principle and beneficial effects of this invention are as follows:

[0019] The working process of this embodiment is as follows: When a fire occurs without a power outage, the temperature sensor and smoke sensor detect the fire through temperature and smoke, activating the telescopic component. The telescopic end of the component pushes the valve core to move, connecting the liquid guide hole to the inlet and outlet holes, allowing the fire-fighting system to discharge fire-fighting fluid. After the temperature sensor and smoke sensor detect that the fire has disappeared, the telescopic component retracts. Under the action of the first limit spring, the valve core resets, blocking the inlet and outlet holes, preventing the fire-fighting fluid from being discharged. When a fire occurs and a power outage occurs, the emergency button is pressed repeatedly. When the emergency button is pressed, the second sliding rack on the emergency button drives the second rotating gear. Rotation causes the first gear, driven by the ratchet, to move the first sliding rack towards the valve core. When force is applied to the emergency stop button, the button moves upward to reset under the action of the third limit spring. At this time, because the limit block is slidably connected to the ratchet, the second gear will not drive the first gear to rotate. This process is repeated multiple times, and the first sliding rack gradually approaches the valve core, driving the valve core to move so that the liquid guide hole is aligned with the liquid inlet and outlet. The locking block engages with the limit hole, and the fire-fighting fluid is discharged. When the fire is extinguished, pressing the locking block disengages it from the limit hole. Under the action of the first, second, and fourth limit springs, the valve core resets, and the fire-fighting fluid stops discharging.

[0020] This embodiment features a control valve installed on the fire tank, with an emergency button and electrical control components inside. The valve is operated via a first control structure and a second control structure, replacing the existing design that directly uses a crushable bead. In this embodiment, after the valve is activated by the emergency button, it can be reset via the first control structure without disassembling or replacing the crushable bead. This makes resetting the emergency switch more convenient and has strong practicality. Attached Figure Description

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] Figure 1 This is a schematic diagram of the existing technology;

[0023] Figure 2 This is a schematic diagram of the overall structure of this embodiment;

[0024] Figure 3 This is a schematic diagram of the control valve in this embodiment;

[0025] Figure 4 This is a schematic diagram of the internal structure of the control valve in this embodiment. Figure 1 ;

[0026] Figure 5 This is a schematic diagram of the connection structure between the first rotating gear and the ratchet in this embodiment;

[0027] Figure 6 This is a schematic diagram of the internal structure of the valve core in this embodiment;

[0028] Figure 7 This is a schematic diagram of the internal structure of the control valve in this embodiment. Figure 2 ;

[0029] Figure 8 This is a schematic diagram of the emergency button in this embodiment.

[0030] In the picture:

[0031] 1. Fire tank body; 11. Liquid outlet; 2. Control valve; 21. Liquid inlet pipe; 211. Liquid inlet hole; 22. Liquid outlet pipe; 221. Liquid outlet hole; 23. Reset chamber; 24. First sliding rail; 241. Limiting hole; 25. Control chamber; 251. Second sliding rail; 2511. First sliding groove; 3. Emergency button; 31. Third limiting bolt; 311. Fourth limiting spring; 32. Second sliding rack; 33. Limiting notch; 4. Mounting plate; 5. Valve core; 51. Sliding... 511. Moving rod; 512. First limiting spring; 513. First limiting bolt; 54. Liquid guide hole; 55. Second sliding groove; 56. Locking block; 57. Fifth limiting spring; 6. Telescopic component; 78. First sliding rack; 79. Sliding column; 710. Second limiting spring; 711. Second limiting bolt; 72. Abutment column; 73. Buffer layer; 84. Second rotating gear; 85. Rotating shaft; 86. Ratchet; 97. First rotating gear; 98. Limiting block; 99. Third limiting spring. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0033] like Figures 2-8 As shown, this embodiment proposes a building emergency fire protection system, the structure of which includes a fire tank 1. In this embodiment, a control valve 2 is connected to the outlet 11 of the fire tank 1. A control chamber 25 is located inside the control valve 2. Both the inlet pipe 21 and the outlet pipe 22 are connected to the control chamber 25. A valve core 5 is located between the inlet pipe 21 and the outlet pipe 22. An electrical control assembly is located inside the control chamber 25. An emergency button 3 is located outside the control valve 2. A first control structure is located inside the control chamber 25, used to control the valve core 5 via the emergency button 3 to block or move away from the inlet pipe 21 and the outlet pipe 22. A second control structure is located inside the control chamber 25, used to control the valve core 5 via the electrical control assembly to block or move away from the inlet pipe 21 and the outlet pipe 22. The electrical control assembly used in this embodiment sends fire signals through a smoke sensor and a temperature sensor. The signals are processed by a microcontroller, and then the control valve 2 is opened and closed to achieve automatic fire extinguishing. When the electrical control components are unable to send a fire signal due to the fire, the control valve 2 can be opened and closed directly by controlling the emergency button 3.

[0034] In this embodiment, the liquid guide hole 52 is disposed on the valve core 5, and the first sliding rail 24 is disposed in the control cavity 25. The valve core 5 is slidably connected to the first sliding rail 24, and the control cavity 25 is slidably connected to the valve core 5 to ensure that the movement of the valve core 5 will not be misaligned. The liquid inlet hole 211 is disposed on the side of the first sliding rail 24 near the liquid inlet pipe 21, and the liquid outlet hole 221 is disposed on the side of the first sliding rail 24 near the liquid outlet pipe 22. The valve core 5 simultaneously abuts against both the liquid outlet hole 221 and the liquid inlet hole 211. In this embodiment, when the liquid guide hole 52 in the valve core 5 is not connected to the liquid outlet hole 221 and the liquid inlet hole 211, the valve core 5 blocks the liquid outlet hole 221 and the liquid inlet hole 211, and the fire-fighting fluid will not be discharged; when the liquid guide hole 52 connects the liquid outlet hole 221 and the liquid inlet hole 211, the fire-fighting fluid flows out through the liquid guide hole 52. The inlet hole 211 and outlet hole 221 are positioned on the movement trajectory of the guide hole 52. A sliding rod 51 is fixedly mounted on the valve core 5 and is slidably connected to the first sliding rail 24. A first limiting bolt 512 is fixedly mounted on the end of the sliding rod 51 to prevent it from detaching from the first sliding rail 24. A first limiting spring 511 is sleeved on the sliding rod 51, and its two ends are fixedly connected to the first sliding rail 24 and the valve core 5, respectively. Under the action of the first limiting spring 511, when the valve core 5 is not subjected to any other external force, the guide hole 52 in the valve core 5 is not connected to the inlet hole 211 and outlet hole 221, thus keeping the valve 2 closed and preventing leakage of fire-fighting fluid.

[0035] In this embodiment, the first control structure includes a first sliding rack 7, a second sliding rail 251 fixedly disposed within the control cavity 25, and a first sliding groove 2511 disposed within the second sliding rail 251. The cross-section of the first sliding groove 2511 is convex to prevent the first sliding rack 7 from disengaging from the first sliding groove 2511. The first sliding rack 7 is slidably connected to the first sliding groove 2511, and the valve core 5 is disposed within the stroke of the first sliding rack 7. In this embodiment, the valve core 5 is pushed to move by the first sliding rack 7 abutting against it, thereby controlling the valve core 5 to open or close the fire-fighting fluid. A sliding column 71 is fixedly disposed at the end of the first sliding rack 7 away from the valve core 5. A mounting plate 4 is disposed at the end of the control cavity 25 away from the valve core 5. The sliding column 71 is slidably connected to the mounting plate 4. A second limiting bolt 712 is fixedly disposed at the end of the sliding column 71. A second limiting spring 711 is sleeved on the sliding column 71, with both ends of the second limiting spring 711 fixedly connected to the second limiting bolt 712 and the mounting plate 4, respectively. In this embodiment, the second limiting spring 711 is used to keep the first sliding rack 7 away from the valve core 5 when it is not subjected to external force. Specifically, if the first sliding rack 7 is moved due to misoperation, the second sliding rod 51 automatically resets under the action of the second limiting spring 711.

[0036] In this embodiment, the rotating shaft 81 is rotatably disposed within the control cavity 25. The first rotating gear 9 is fixedly disposed on the rotating shaft 81 and meshes with the first sliding rack 7. The ratchet 82 is rotatably disposed on the rotating shaft 81 and rotatably connected. Several limiting blocks 91 are disposed on the first rotating gear 9, and one end of each limiting block 91 abuts against the ratchet 82. A third limiting spring 92 is disposed on each limiting block 91, and both ends of the third limiting spring 92 are fixedly connected to the end of the limiting block 91 away from the ratchet 82 and the first rotating gear 9, respectively, to ensure that the limiting block 91 and the ratchet 82 remain in contact. In this embodiment, the first rotating gear 9 is controlled to rotate by a ratchet 82. When the ratchet 82 rotates clockwise as shown in the figure, it abuts against the ratchet 82 through the limiting block 91. The ratchet 82 drives the first rotating gear 9 to rotate, which in turn drives the first sliding rack 7 to move toward the valve core 5. When the ratchet 82 rotates counterclockwise, the limiting block 91 does not abut against the ratchet 82. The ratchet 82 does not drive the first rotating gear 9 to rotate, but it does not drive the first sliding rack 7 to move away from the valve core 5.

[0037] In this embodiment, the second rotating gear 8 is mounted on the rotating shaft 81 and is fixedly connected to the ratchet 82. The emergency button 3 is slidably connected to the control cavity 25. The second sliding rack 32 is mounted on the bottom side wall of the emergency button 3 and meshes with the second rotating gear 8. The reset cavity 23 is located at the top of the control cavity 25, and the third limiting bolt 31 is located inside the reset cavity 23. The third limiting bolt 31 is fixedly connected to the emergency button 3. The fourth limiting spring 311 is sleeved on the emergency button 3, and its two ends are fixedly connected to the bottom of the reset cavity 23 and the third limiting bolt 31, respectively, to reset the emergency button 3 and ensure that the emergency button 3 automatically returns to its original position after being pressed, making it easy to press again. In this embodiment, a booster pump is installed on the fire tank 1. When the control valve 2 is open, the fire extinguishing fluid will be sprayed out under strong water pressure, which may endanger operators (such as children) in the absence of a fire. In this embodiment, the design ensures that the emergency button 3 must be pressed multiple times. The number of presses can be set according to the actual situation, preferably 3 to 5 times. At this time, the first sliding rack 7 contacts the valve core 5, pushing the valve core 5 to open, so that the fire-fighting fluid flows out.

[0038] In this embodiment, the second sliding groove 53 is located at the end of the valve core 5 near the sliding rod 51. The limiting hole 241 is located within the first sliding rail 24, and the sliding hole is located on the side of the second sliding groove 53 near the limiting hole 241. The locking block 54 is slidably located within the second sliding groove 53. The fifth limiting spring 541 is located within the second sliding groove 53, and its two ends are fixedly connected to the second sliding groove 53 and the locking block 54, respectively. The locking block 54 and the limiting hole 241 are engaged. In this embodiment, the fifth limiting spring 541 keeps the locking block 54 in constant contact with the first sliding rail 24. When the locking block 54 approaches the limiting hole 241, it engages immediately under the action of the fifth limiting spring 541. When the valve core 5 moves, the locking block 54 engages within the limiting hole 241, preventing the valve core 5 from retracting. The fire extinguishing fluid continues to spray out, ensuring a continuous flow of fire extinguishing fluid during firefighting and ensuring that the fire is extinguished immediately. Once the fire is extinguished, pressing down on the latch 54 closes the control valve 2, reducing the waste of fire extinguishing fluid. In this embodiment, the preferred fire extinguishing fluid is foam extinguishing agent, dry powder extinguishing agent, or carbon dioxide extinguishing agent.

[0039] The second control structure in this embodiment includes a telescopic member 6. The fixed end of the telescopic member 6 is fixedly connected to the control cavity 25, and the telescopic end of the telescopic member 6 abuts against the valve core 5. The telescopic member 6 used in this embodiment is preferably a hydraulic cylinder or a pneumatic cylinder. Hydraulic cylinders or pneumatic cylinders are existing technologies and will not be described in detail in this embodiment.

[0040] In this embodiment, the limiting notch 33 is located on the side of the emergency button 3 to ensure that the second sliding rack 32 at the lower end of the emergency button 3 will not rotate or deviate during movement, maintaining engagement with the second rotating gear 8. A gap is provided between the second sliding rack 32 and the second rotating gear 8 to ensure that the second sliding rack 32 will retract and reset when no external force is applied. This gap ensures that the retraction and reset of the second sliding rack 32 is unaffected. When the telescopic member 6 pushes the valve core 5 to move, a gap is provided between the locking block 54 and the locking groove. The cross-section of the liquid guiding hole 52 is a strip structure. The strip structure of the liquid guiding hole 52 expands the liquid guiding space of the liquid guiding hole 52. When the telescopic member 6 controls the movement of the valve core 5, due to the gap between the locking block 54 and the locking groove, the locking block 54 will not directly enter the locking groove. Under the action of the telescopic member 6 and the first limiting spring 511, the control valve 2 can be directly controlled.

[0041] In this embodiment, the abutment post 72 is located at the end of the first sliding rack 7 near the valve core 5, and the buffer layer 721 is fixedly located at the end of the abutment post 72 and the telescopic end of the telescopic member 6. The buffer layer 721 is made of rubber material. This design reduces the collision between the first sliding rack 7 and the telescopic member 6 and the valve core 5, thus extending the service life of the equipment.

[0042] The electronic control components in this embodiment include a temperature sensor and a flue gas sensor, both of which are electrically connected to the telescopic component 6. The temperature sensor used in this embodiment is preferably a Siemens SYNOVA FC. The flue gas sensor is preferably a System Sensor I4 Series. The microcontroller connected to the temperature sensor and the flue gas sensor is preferably an STM32F103.

[0043] The working process of this embodiment is as follows: When a fire occurs without a power outage, the temperature sensor and the smoke sensor detect the fire through temperature and smoke, activating the telescopic component 6. The telescopic end of the telescopic component 6 pushes the valve core 5 to move, so that the liquid guide hole 52 connects the liquid inlet hole 211 and the liquid outlet hole 221, and the fire protection system discharges fire-fighting liquid. After the temperature sensor and the smoke sensor detect that the fire has disappeared, the telescopic component 6 retracts. Under the action of the first limit spring 511, the valve core 5 resets and blocks the liquid inlet hole 211 and the liquid outlet hole 221, preventing the fire-fighting liquid from being discharged. When a fire occurs and a power outage occurs, the emergency button 3 is pressed repeatedly. When the emergency button 3 is pressed, the second sliding rack 32 on the emergency button 3 drives the second rotating gear 8 to rotate, and the ratchet... Driven by 82, the first gear rotates, causing the first sliding rack 7 to move towards the valve core 5. When force is applied to the emergency stop button 3, the emergency stop button 3 moves upward and resets under the action of the third limit spring 92. At this time, because the limit block 91 is slidably connected to the ratchet 82, the second gear will not drive the first gear to rotate. This process is repeated multiple times, and the first sliding rack 7 gradually approaches the valve core 5 and drives the valve core 5 to move, so that the liquid guide hole 52 is aligned with the liquid inlet and liquid outlet 11. The locking block 54 is engaged in the limit hole 241, and the fire-fighting liquid is discharged. When the fire is extinguished, the locking block 54 is pressed, so that the locking block 54 is disengaged from the limit hole 241. Under the action of the first limit spring 511, the second limit spring 711 and the fourth limit spring 311, the valve core 5 resets, and the fire-fighting liquid stops being discharged.

[0044] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A building emergency fire protection system, including a fire protection tank body (1), characterized in that a liquid outlet (11) of the fire protection tank body (1) is connected with a control valve (2), a control cavity (25) is arranged inside the control valve (2), the control cavity (25) is connected with a liquid inlet pipe (21) and a liquid outlet pipe (22), a valve core (5) is arranged between the liquid inlet pipe (21) and the liquid outlet pipe (22), an electric control component is arranged inside the control cavity (25), an emergency button (3) is arranged outside the control valve (2), and a first control structure for controlling the valve core (5) to block the liquid inlet pipe (21) and the liquid outlet pipe (22), or move away from and conduct the liquid inlet pipe (21) and the liquid outlet pipe (22) through the emergency button (3) is arranged inside the control cavity (25), and a second control structure for controlling the valve core (5) to block the liquid inlet pipe (21) and the liquid outlet pipe (22), or move away from and conduct the liquid inlet pipe (21) and the liquid outlet pipe (22) through the electric control component is further arranged inside the control cavity (25); the first control structure includes a first sliding rack (7), a second sliding rail (251) is fixed inside the control cavity (25), a first sliding groove (2511) is arranged inside the second sliding rail (251), the cross section of the first sliding groove (2511) is in a "convex" shape structure, the first sliding rack (7) is slidably connected with the first sliding groove (2511), the valve core (5) is arranged within the stroke of the first sliding rack (7), a sliding column (71) is fixed at the end of the first sliding rack (7) away from the valve core (5), a mounting plate (4) is arranged at the end of the control cavity (25) away from the valve core (5), the sliding column (71) is slidably connected with the mounting plate (4), a second limit bolt (712) is further fixed at the end of the sliding column (71), a second limit spring (711) is sleeved on the sliding column (71), and two ends of the second limit spring (711) are respectively fixedly connected with the second limit bolt (712) and the mounting plate (4); a rotating shaft (81) is further rotatably connected inside the control cavity (25), a first rotating gear (9) is fixed on the rotating shaft (81), the first rotating gear (9) is meshed with the first sliding rack (7), a ratchet wheel (82) is rotatably connected on the rotating shaft (81), a plurality of limit blocks (91) are rotatably connected on the first rotating gear (9), one end of each of the limit blocks (91) abuts against the ratchet wheel (82), and a third limit spring (92) is further arranged on each of the limit blocks (91), and two ends of the third limit spring (92) are respectively fixedly connected with one end of the limit block (91) away from the ratchet wheel (82) and the first rotating gear (9); The rotating shaft (81) is also provided with a second rotating gear (8), which is fixedly connected to the ratchet (82). The emergency button (3) is slidably connected to the control cavity (25). The emergency button (3) is provided with a second sliding rack (32) on the bottom side wall. The second sliding rack (32) meshes with the second rotating gear (8). The top of the control cavity (25) is also provided with a reset cavity (23). The reset cavity (23) is provided with a third limiting bolt (31). The third limiting bolt (31) is fixedly connected to the emergency button (3). The emergency button (3) is also sleeved with a fourth limiting spring (311). The two ends of the fourth limiting spring (311) are fixedly connected to the bottom of the reset cavity (23) and the third limiting bolt (31), respectively.

2. The building emergency fire protection system according to claim 1, characterized in that, The valve core (5) is provided with a liquid guide hole (52), and the control cavity (25) is provided with a first sliding rail (24). The valve core (5) is slidably connected to the first sliding rail (24), and the control cavity (25) is slidably connected to the valve core (5). The first sliding rail (24) is provided with a liquid inlet hole (211) near the liquid inlet pipe (21) and a liquid outlet hole (221) near the liquid outlet pipe (22). The valve core (5) is simultaneously connected to both the liquid outlet hole (221) and the liquid inlet hole (211). The inlet hole (211) and outlet hole (221) are located on the movement trajectory of the guide hole (52). A sliding rod (51) is fixed on the valve core (5). The sliding rod (51) is slidably connected to the first sliding rail (24). A first limiting bolt (512) is fixed at the end of the sliding rod (51). A first limiting spring (511) is sleeved on the sliding rod (51). The two ends of the first limiting spring (511) are fixedly connected to the first sliding rail (24) and the valve core (5) respectively.

3. The building emergency fire protection system according to claim 2, characterized in that, The valve core (5) is provided with a second sliding groove (53) near the sliding rod (51). The first sliding rail (24) is provided with a limiting hole (241). The second sliding groove (53) is provided with a sliding hole near the limiting hole (241). A locking block (54) is slidably connected in the second sliding groove (53). A fifth limiting spring (541) is provided in the second sliding groove (53). The two ends of the fifth limiting spring (541) are fixedly connected to the second sliding groove (53) and the locking block (54) respectively. The locking block (54) and the limiting hole (241) are engaged.

4. A building emergency fire protection system according to claim 3, characterized in that, The second control structure includes a telescopic member (6), the fixed end of which is fixedly connected to the control cavity (25), and the telescopic end of which abuts against the valve core (5).

5. A building emergency fire protection system according to claim 4, characterized in that, The emergency button (3) has a limiting notch (33) on its side. There is a gap between the second sliding rack (32) and the second rotating gear (8). When the telescopic member (6) pushes the valve core (5) to move, there is a gap between the locking block (54) and the locking groove. The cross-section of the liquid guiding hole (52) is a strip structure.

6. A building emergency fire protection system according to claim 5, characterized in that, The first sliding rack (7) has an abutment post (72) near the valve core (5). The end of the abutment post (72) and the telescopic end of the telescopic member (6) are both fixed with a buffer layer (721), which is made of rubber material.

7. A building emergency fire protection system according to claim 6, characterized in that, The electronic control component includes a temperature sensor and a flue gas sensor, both of which are electrically connected to the telescopic component (6).

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