Building fire alarm device

Abstract

The invention belongs to the technical field of fire alarm, and particularly discloses a building fire alarm device which comprises a wall body and an outer frame installed on the front side face of the wall body, a smoke sensor is fixed to the bottom face of the outer frame, and a vibration loudspeaker is installed in the outer frame. The bottom end of the drainage pipe corresponds to the bottom of the dispersion frame, the elastic force of the elastic piece pushes the inner ring to move downwards on the surface of the drainage pipe, the downward movement of the inner ring enables the through hole to leak out, and at the moment, the interior of the drainage pipe communicates with the drainage frame through the through hole, and a liquid fire-fighting medium in the water tank enters the inner side of the drainage frame through the water inlet pipe; a liquid fire-fighting medium in the drainage frame enters the drainage pipe through the through hole, the liquid fire-fighting medium falls on the top surface of the dispersing frame through the drainage pipe, the vibrating dispersing frame disperses and sprays the liquid fire-fighting medium through the multiple leakage holes, fire extinguishing around the outer frame is facilitated, and the vibrating horn can continuously work to give an alarm in the fire disaster process; and people can be conveniently notified to evacuate.

Description

Technical Field

[0001] This invention belongs to the field of fire alarm technology, and specifically relates to a building fire alarm device. Background Technology

[0002] Fire is a major safety accident that can easily cause significant personal injury and property damage. For major locations that are prone to fire, such as factories, shopping malls, communities, office buildings, hotels, and guesthouses, fire alarm devices must be installed and pass the acceptance inspection by relevant departments.

[0003] When a fire spreads to the vicinity of the alarm device and causes damage to the device, the alarm device can no longer send out alarm notifications, thus affecting the efficiency of personnel evacuation.

[0004] Therefore, it is necessary to invent a building fire alarm device to solve the above problems. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a building fire alarm device to solve the issues raised in the background section. To achieve the above objectives, the present invention provides the following technical solution: a building fire alarm device, comprising a wall and an outer frame installed on the front side of the wall. A smoke sensor is fixed to the bottom surface of the outer frame, and a vibration horn is installed inside the outer frame. Both the smoke sensor and the vibration horn are externally connected to a controller and a power supply. A dispersion frame is fixed to the front side of the outer frame. The bottom surface of the dispersion frame is provided with multiple parallel drainage holes. A movable frame is provided on the top surface of the outer frame. Both ends of the movable frame are connected to water inlet pipes, and the inlet pipes are connected to a water tank. A drainage structure is provided at the center of the movable frame. The drainage structure includes a drainage frame. The two water inlet pipes are spirally engaged at the two ends of the drainage frame. A drainage pipe is spirally engaged at the center of the drainage frame. The bottom end of the drainage pipe is flush with the bottom surface of the movable frame. The movable frame moves forward to the top surface of the dispersion frame, and the bottom end of the drainage pipe corresponds to the top surface of the dispersion frame.

[0006] Furthermore, the outer frame is equipped with a pushing structure for moving the movable frame. The pushing structure includes two vertically arranged vertical rods, with a sliding plate slidably sleeved on the surface of the vertical rods. The front end of the sliding plate moves up and down on the surface of the vertical rods, and the rear end of the sliding plate is embedded in the wall. The rear side of the wall is provided with a vertical groove corresponding to the sliding plate. The vertical groove is corresponding to the vertical rod. The front ends of the two sliding plates are fixedly connected by a connecting rod. A cylinder is provided inside the outer frame, and the top output end of the cylinder is connected to the center of the connecting rod.

[0007] Furthermore, inner rods are provided on both sides of the vertical groove. The two sides of the rear end of the slide plate are slidably sleeved on the surfaces of the two inner rods. Springs are sleeved on the surfaces of the inner rods. The bottom end of the spring is connected to the top surface of the slide plate, and the top end of the spring is connected to the top surface of the inner side of the vertical groove. The spring is in a compressed state.

[0008] Furthermore, both ends of the connecting rod are sleeved to the bottom end of the rotating plate, the top end of the rotating plate is hinged to the bottom end of the slider, the top end of the slider is connected to the bottom surface of the movable frame, and the top surface of the outer frame is provided with a sliding groove that slides with the slider. When the slider slides back and forth inside the sliding groove, the slider moves the movable frame to slide back and forth in front of the top surface of the outer frame.

[0009] Furthermore, the drainage structure also includes an inner ring located inside the drainage frame. The inner ring is slidably sleeved on the surface of the drainage pipe. An elastic element is sleeved on the surface of the drainage pipe. The top end of the elastic element is connected to the outer circumference of the drainage pipe, and the bottom end of the elastic element is in contact with the top surface of the inner ring. The bottom end of the drainage pipe is located at the bottom of the inner ring.

[0010] Furthermore, the top of the drainage frame is provided with a collar, the bottom end of the drainage pipe is spirally fastened to the inside of the collar, the top of the drainage pipe is fixed with a circular plate, the diameter of the circular plate is larger than the outer diameter of the collar, and the top surface of the movable frame is provided with a groove corresponding to the collar.

[0011] Furthermore, a ring frame is provided on the inner side of the drainage frame, the inner ring is located inside the ring frame, and the outer side of the inner ring circumference is in contact with the inner side wall of the ring frame. A retaining ring is provided at the bottom of the inner ring, and the retaining ring is sleeved on the bottom end of the drainage pipe. A through groove corresponding to the retaining ring is provided on the bottom surface of the movable frame, and the bottom surface of the retaining ring is flush with the bottom surface of the movable frame. The bottom surface of the retaining ring is in contact with the top surface of the outer frame, and the top surface of the retaining ring is in contact with the bottom surface of the inner ring.

[0012] Furthermore, the outer circumference of the drain pipe is provided with a plurality of through holes arranged in a ring. The through holes are located inside the inner ring, and the inner side of the drain frame is connected to the inside of the drain pipe through the plurality of through holes.

[0013] The technical effects and advantages of this invention are as follows: 1. This invention aligns the bottom end of the drain pipe with the bottom of the dispersion frame. The elastic force of the elastic element pushes the inner ring downward on the surface of the drain pipe. The downward movement of the inner ring causes the through hole to leak out. At this time, the inside of the drain pipe is connected to the drainage frame through the through hole. The liquid fire-fighting medium inside the water tank enters the inside of the drainage frame through the water inlet pipe. The liquid fire-fighting medium inside the drainage frame enters the inside of the drain pipe through the through hole. The liquid fire-fighting medium falls onto the top surface of the dispersion frame through the drain pipe. The vibrating dispersion frame uses multiple holes to disperse and spray the liquid fire-fighting medium, which is convenient for extinguishing fires around the outer frame. This allows the vibrating horn to work continuously during a fire, making it convenient to notify personnel to evacuate.

[0014] 2. This invention rotates the drain pipe so that its bottom end reaches the inner side of the ring frame. At this time, the pressure of the elastic element on the top of the inner ring decreases, pushing the inner ring upward. The inner ring enters the ring frame, and the drain frame moves back and forth inside the moving frame. The drain frame moves back and forth inside the groove at the top of the moving frame using the collar. The movement of the drain frame brings the side opening of the drain frame closer to the side opening of the moving frame, making it easier to install the output end of the water inlet pipe on the side opening of the drain frame. This improves the installation efficiency of the water inlet pipe and avoids the situation where the water inlet pipe is too soft, which makes installation difficult.

[0015] 3. This invention causes the drain pipe to move downwards inside the drain frame by twisting it until the through hole on the surface of the drain pipe enters the inner ring. The retaining ring is then locked into the through groove at the bottom of the movable frame. The cylinder stops working, and the spring force causes the slide plate to move downwards. The moving slide plate pulls the bottom of the rotating plate downwards via the connecting rod. The rotating plate pulls the movable frame backwards on the top surface of the outer frame via the slider until the movable frame moves back to the top surface of the outer frame. The elastic force of the elastic element ensures that the bottom of the inner ring is tightly pressed against the top surface of the retaining ring, thus ensuring the continuous use effect of the entire alarm device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the building fire alarm device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal components of the outer frame in an embodiment of the present invention; Figure 3 This is a schematic diagram of the internal components of the wall according to an embodiment of the present invention; Figure 4 This is a three-dimensional cross-sectional view of the drainage frame according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the internal components of the mobile frame according to an embodiment of the present invention; In the diagram: 1. Wall; 2. Outer frame; 3. Smoke sensor; 4. Vibrating horn; 5. Dispersion frame; 6. Drain hole; 7. Moving frame; 8. Water inlet pipe; 9. Drainage frame; 10. Drainage pipe; 11. Vertical rod; 12. Slide plate; 13. Connecting rod; 14. Cylinder; 15. Inner rod; 16. Spring; 17. Rotating plate; 18. Sliding block; 19. Slide groove; 20. Inner ring; 21. Elastic element; 22. Collar ring; 23. Groove; 24. Ring frame; 25. Retaining ring; 26. Through hole. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0018] This invention provides a building fire alarm device, such as... Figure 1 and Figure 2As shown, the device includes a wall 1 and an outer frame 2 installed on the front side of the wall 1. A smoke sensor 3 is fixed to the bottom surface of the outer frame 2, and a vibration horn 4 is installed inside the outer frame 2. Both the smoke sensor 3 and the vibration horn 4 are externally connected to a controller and a power supply. A dispersion frame 5 is fixed to the front side of the outer frame 2. The bottom surface of the dispersion frame 5 is provided with multiple parallel drainage holes 6. A movable frame 7 is provided on the top surface of the outer frame 2. Both ends of the movable frame 7 are connected to the output end of a water inlet pipe 8. The input end of the water inlet pipe 8 is connected to a water tank, which contains liquid fire-fighting medium. Combustible materials near the outer frame 2 will emit smoke before ignition. The smoke sensor 3 can detect the smoke. At this time, the controller controls the vibrating horn 4 to sound an alarm to remind employees. At the same time, the vibrating horn 4 drives the dispersion frame 5 to vibrate. Liquid fire-fighting medium falls onto the top surface of the dispersion frame 5 through the drain pipe 10. The vibrating dispersion frame 5 uses multiple holes 6 to disperse and spray the liquid fire-fighting medium, improving the diffusion effect of the liquid fire-fighting medium. Potassium carbonate will generate carbon dioxide after heating, thereby blocking the air and facilitating fire extinguishing around the outer frame. This allows the vibrating horn to work continuously during the fire, making it convenient to notify personnel to evacuate.

[0019] A drainage structure is provided at the center of the movable frame 7. The drainage structure includes a drainage frame 9, with the output ends of two water inlet pipes 8 spirally connected to the openings at both ends of the drainage frame 9. A drainage pipe 10 is spirally connected to the center of the drainage frame 9, with the bottom end of the drainage pipe 10 corresponding to and flush with the bottom surface of the movable frame 7. The movable frame 7 moves forward to the top surface of the dispersion frame 5, and the bottom end of the drainage pipe 10 corresponds to the top surface of the dispersion frame 5. Water from the water tank enters the inside of the drainage frame 9 through the water inlet pipes 8. When the bottom end of the drainage pipe 10 corresponds to the dispersion frame 5, the drainage pipe 10 can discharge the water inside the drainage frame 9. When the discharged water impacts the top of the dispersion frame 5, it splashes around the front side of the outer frame 2. The dispersion frame 5 receives the discharged water and disperses and sprays the liquid fire-fighting medium through multiple drain holes 6, improving the water dispersion and spraying effect.

[0020] exist Figure 2 and Figure 3In the outer frame 2, a pushing structure for moving the movable frame 7 is provided inside. The pushing structure includes two vertically arranged vertical rods 11, with sliding plates 12 slidably sleeved on the surface of the vertical rods 11. The front end of the sliding plate 12 moves up and down on the surface of the vertical rods 11, and the rear end of the sliding plate 12 is embedded inside the wall 1. The rear side of the wall 1 is provided with vertical grooves corresponding to the sliding plates 12, and the vertical grooves are correspondingly arranged with the vertical rods 11. The front ends of the two sliding plates 12 are fixedly connected by connecting rods 13. A cylinder 14 is provided inside the outer frame 2. The cylinder 14 is externally connected to a controller and a power supply. The top output end of the cylinder 14 is connected to the center of the connecting rod 13. When the cylinder 14 is working, the output end of the cylinder 14 drives the connecting rod 13 to move up and down. The connecting rod 13 drives the front ends of the two sliding plates 12 to move up and down on the surface of the two vertical rods 11. When the sliding plates 12 move, they move up and down inside the vertical grooves. The two vertical rods 11 and the two vertical grooves enable the sliding plates 12 to move up and down smoothly inside the outer frame 2. Both sides of the vertical groove are provided with inner rods 15. The two rear ends of the slide plate 12 are slidably sleeved on the surfaces of the two inner rods 15. Springs 16 are sleeved on the surfaces of the inner rods 15. The bottom end of the spring 16 is connected to the top surface of the slide plate 12, and the top end of the spring 16 is connected to the top surface of the inner side of the vertical groove. The spring 16 is in a compressed state. When the slide plate 12 moves up and down inside the vertical groove, the two rear ends of the slide plate 12 move up and down on the surfaces of the two inner rods 15 respectively. When the slide plate 12 moves upward, the slide plate 12 and the top surface of the inner side of the vertical groove cooperate to compress the spring 16. When the slide plate 12 moves downward, the spring 16 rebounds with elastic force. The spring 16 gradually extends during the downward movement of the slide plate 12.

[0021] exist Figure 1 and Figure 2 In this configuration, both ends of the connecting rod 13 are sleeved onto the bottom end of the rotating plate 17. The top end of the rotating plate 17 is hinged to the bottom end of the slider 18. The top end of the slider 18 is connected to the bottom surface of the movable frame 7. The top surface of the outer frame 2 is provided with a groove 19 that slides with the slider 18. When the slider 18 slides back and forth inside the groove 19, the slider 18 moves the movable frame 7 back and forth on the top surface of the outer frame 2. When the cylinder 14 operates, it uses the connecting rod 13 to move the two slide plates 12 upward. At the same time, the rear end of the slide plate 12 compresses the spring 16 inside the vertical groove, and the connecting rod 13 pushes the bottom end of the rotating plate 17 upward. The rotating plate 17 rotates under the push of the connecting rod 13. The rotating plate 17 pushes the slider 18 forward inside the groove 19, and the slider 18 drives the movable frame 7 to move forward on the top surface of the outer frame 2 until the drain pipe 10 inside the movable frame 7 corresponds to the top surface of the dispersion frame 5. The elastic force of the spring 16 causes the rear end of the slide plate 12 to move down inside the vertical groove, and the slide plate 12 pulls the bottom end of the rotating plate 17. The rotating plate 17 uses the slider 18 to pull the moving frame 7 to move backward on the top surface of the outer frame 2.

[0022] exist Figure 1 , Figure 4 and Figure 5The drainage structure further includes an inner ring 20, which is located inside the drainage frame 9. The inner ring 20 is slidably sleeved on the surface of the drainage pipe 10. An elastic element 21 is sleeved on the surface of the drainage pipe 10. The top end of the elastic element 21 is connected to the outer circumference of the drainage pipe 10, and the bottom end of the elastic element 21 is in contact with the top surface of the inner ring 20. The bottom end of the drainage pipe 10 is located at the bottom of the inner ring 20. A ring frame 24 is provided inside the drainage frame 9. The inner ring 20 is located inside the ring frame 24, and the outer circumference of the inner ring 20 is in contact with the inner wall of the ring frame 24. A retaining ring 25 is provided at the bottom of the inner ring 20. The retaining ring 25 is sleeved on the bottom end of the drainage pipe 10. A through groove corresponding to the retaining ring 25 is provided on the bottom surface of the movable frame 7. The bottom surface of the retaining ring 25 is flush with the bottom surface of the movable frame 7. The bottom surface of the retaining ring 25 is in contact with the top surface of the outer frame 2, and the top surface of the retaining ring 25 is in contact with the bottom surface of the inner ring 20. The retaining ring 25 is locked inside the through groove at the bottom of the movable frame 7, and the retaining ring 25 is correspondingly sleeved on the bottom end of the drain pipe 10. The elastic force of the elastic element 21 is applied to the top surface of the retaining ring 25 through the inner ring 20, and the elastic force of the elastic element 21 makes the bottom surface of the retaining ring 25 tightly adhere to the top surface of the outer frame 2.

[0023] When the movable frame 7 moves to the top of the dispersion frame 5, the retaining ring 25 separates from the outer frame 2. The elastic force of the elastic element 21 pushes the inner ring 20 down on the surface of the drain pipe 10. The down-moving inner ring 20 pushes the retaining ring 25 out of the through groove, and the bottom of the inner ring 20 gradually moves down to the bottom of the ring frame 24. Since the inner bottom of the ring frame 24 is provided with a side block that limits the inner ring 20, the side block is used to prevent the inner ring 20 from detaching from the ring frame 24.

[0024] The top of the drainage frame 9 is provided with a collar 22, and the bottom end of the drainage pipe 10 is spirally fastened to the inside of the collar 22. A circular plate is fixed to the top of the drainage pipe 10, and the diameter of the circular plate is larger than the outer diameter of the collar 22. The top surface of the movable frame 7 is provided with a groove 23 corresponding to the collar 22. Rotating the drainage pipe 10, the spiral effect between the drainage pipe 10 and the collar 22 controls the up and down movement of the drainage pipe 10 inside the drainage frame 9. When the drainage pipe 10 moves upward, it drives the top end of the elastic element 21 to move upward, at which time the elastic element 21 extends, and the pressure of the bottom end of the elastic element 21 on the inner ring 20 decreases. When the drainage pipe 10 moves downward, it drives the top end of the elastic element 21 to move downward, at which time the elastic element 21 compresses, and the pressure of the bottom end of the elastic element 21 on the inner ring 20 increases.

[0025] By rotating the drain pipe 10, the bottom end of the drain pipe 10 is brought to the inside of the ring frame 24. At this time, the pressure of the elastic element 21 on the top of the inner ring 20 is reduced. The inner ring 20 is then pushed upward and enters the ring frame 24. When the drain frame 9 moves back and forth inside the moving frame 7, the drain frame 9 uses the collar 22 to move back and forth inside the groove 23 at the top of the moving frame 7. Through the movement of the drain frame 9, the side opening of the drain frame 9 is brought close to the side opening of the moving frame 7, which makes it convenient to install the output end of the water inlet pipe 8 on the side opening of the drain frame 9, thereby improving the installation efficiency of the water inlet pipe 8 and avoiding the situation where the water inlet pipe 8 is too soft and difficult to install.

[0026] exist Figure 1 and Figure 4 In this process, the drain pipe 10 has multiple through holes 26 arranged in a ring on its outer circumference. The through holes 26 are located inside the inner ring 20. The inner side of the drain frame 9 is connected to the inside of the drain pipe 10 through the multiple through holes 26. When the bottom end of the drain pipe 10 corresponds to the top of the dispersion frame 5, the elastic force of the elastic element 21 pushes the inner ring 20 to move downward on the surface of the drain pipe 10. The downward movement of the inner ring 20 causes the through holes 26 to leak out. At this time, the inside of the drain pipe 10 is connected to the drain frame 9 through the through holes 26. Water inside the water tank enters the inside of the drain frame 9 through the water inlet pipe 8. Water inside the drain frame 9 enters the inside of the drain pipe 10 through the through holes 26. The drain pipe 10 discharges the water through the bottom outlet. The discharged water falls on the top of the dispersion frame 5, completing the dispersion process.

[0027] Working principle of this invention: Reference Figures 1 to 5 As shown, by rotating the drain pipe 10, the bottom end of the drain pipe 10 is brought to the inside of the ring frame 24. At this time, the pressure of the elastic element 21 on the top of the inner ring 20 is reduced. The inner ring 20 is pushed upward and enters the ring frame 24. When the drain frame 9 moves back and forth inside the moving frame 7, the drain frame 9 uses the collar 22 to move back and forth inside the groove 23 at the top of the moving frame 7. The movement of the drain frame 9 makes the side opening of the drain frame 9 close to the side opening of the moving frame 7, which makes it convenient to install the output end of the water inlet pipe 8 on the side opening of the drain frame 9, improves the installation efficiency of the water inlet pipe 8, and avoids the situation where the water inlet pipe 8 is too soft and difficult to install.

[0028] The retaining ring 25 is locked inside the through groove at the bottom of the movable frame 7, and the retaining ring 25 is correspondingly sleeved on the bottom end of the drain pipe 10. The elastic force of the elastic element 21 is applied to the top surface of the retaining ring 25 through the inner ring 20, and the elastic force of the elastic element 21 makes the bottom surface of the retaining ring 25 tightly adhere to the top surface of the outer frame 2.

[0029] Combustible materials near the outer frame 2 will emit smoke before ignition. The smoke sensor 3 can detect the smoke. At this time, the controller controls the vibration horn 4 to sound an alarm to remind employees. At the same time, the vibration horn 4 drives the dispersion frame 5 to vibrate. At this time, the cylinder 14 works to use the connecting rod 13 to move the two slide plates 12 upward. While the rear end of the slide plate 12 compresses the spring 16 inside the vertical groove, the connecting rod 13 pushes the bottom end of the rotating plate 17 upward. The rotating plate 17 rotates under the push of the connecting rod 13. The rotating plate 17 pushes the slider 18 forward inside the slide groove 19. At the same time, the slider 18 drives the moving frame 7 to move forward on the top of the outer frame 2 until the drain pipe 10 inside the moving frame 7 corresponds to the top of the dispersion frame 5.

[0030] The retaining ring 25 separates from the outer frame 2. The elastic force of the elastic element 21 pushes the inner ring 20 downward on the surface of the drain pipe 10. The downward-moving inner ring 20 pushes the retaining ring 25 out of the through groove, and the bottom of the inner ring 20 gradually moves down to the bottom of the ring frame 24. Since the inner bottom of the ring frame 24 is provided with a side block to limit the inner ring 20, the side block is used to prevent the inner ring 20 from detaching from the ring frame 24. Furthermore, the downward movement of the inner ring 20 causes the through hole 26 to leak out. At this time, the inside of the drain pipe 10 is connected to the drain frame 9 through the through hole 26. At this time, the liquid fire-fighting medium inside the water tank enters the inside of the drain frame 9 through the water inlet pipe 8. The liquid fire-fighting medium inside the drain frame 9 enters the inside of the drain pipe 10 through the through hole 26. The liquid fire-fighting medium falls on the top surface of the dispersion frame 5 through the drain pipe 10. The vibrating dispersion frame 5 uses multiple holes 6 to disperse and spray the liquid fire-fighting medium, improving the diffusion effect of the liquid fire-fighting medium. Potassium carbonate will generate carbon dioxide after heating, thereby blocking air and improving the fire extinguishing effect.

[0031] After the fire is extinguished, the drain pipe 10 is turned so that it moves down inside the drain frame 9 until the through hole 26 on the surface of the drain pipe 10 enters the inner ring 20 and the retaining ring 25 is correspondingly snapped into the through groove at the bottom of the movable frame 7. The cylinder 14 stops working, and the elastic force of the spring 16 causes the slide plate 12 to move down. The moving slide plate 12 uses the connecting rod 13 to pull the bottom of the rotating plate 17 down. The rotating plate 17 uses the slider 18 to pull the movable frame 7 to move backward on the top surface of the outer frame 2 until the movable frame 7 moves back to the top surface of the outer frame 2. The elastic force of the elastic element 21 makes the bottom of the inner ring 20 stick tightly to the top surface of the retaining ring 25.

[0032] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A building fire alarm device, comprising a wall (1) and an outer frame (2) installed on the front side of the wall (1), a smoke sensor (3) being fixed to the bottom surface of the outer frame (2), characterized in that: The outer frame (2) is internally mounted with a vibrating horn (4), the smoke sensor (3) and the vibrating horn (4) are externally connected with a controller and a power supply, the front side of the outer frame (2) is fixed with a dispersion frame (5), the bottom surface of the dispersion frame (5) is provided with a plurality of parallel arranged leakage holes (6), the top surface of the outer frame (2) is provided with a moving frame (7), the two end openings of the moving frame (7) are connected with the output ends of the water inlet pipes (8), the input ends of the water inlet pipes (8) are externally connected with a water tank, the center of the moving frame (7) is provided with a drainage structure, the drainage structure comprises a drainage frame (9), the output ends of the two water inlet pipes (8) are spirally clamped at the two end openings of the drainage frame (9), the center of the drainage frame (9) is spirally clamped with a drainage pipe (10), the bottom end of the drainage pipe (10) is flush with the bottom surface of the moving frame (7), the moving frame (7) moves to the top surface of the dispersion frame (5), and the bottom end of the drainage pipe (10) corresponds to the top surface of the dispersion frame (5).

2. The building fire alarm device according to claim 1, wherein: The outer frame (2) is internally provided with a pushing structure for moving the moving frame (7), the pushing structure comprises two vertically arranged vertical rods (11), the surface of the vertical rod (11) is slidably sleeved with a sliding plate (12), the front side end of the sliding plate (12) moves up and down on the surface of the vertical rod (11), and the rear side end of the sliding plate (12) is embedded in the wall body (1).

3. The building fire alarm device according to claim 2, wherein: The rear side of the wall body (1) is provided with a vertical groove corresponding to the sliding plate (12), the vertical groove is correspondingly arranged with the vertical rod (11), the front side ends of the two sliding plates (12) are fixedly connected by a connecting rod (13), and the inner part of the outer frame (2) is provided with a gas cylinder (14), and the top output end of the gas cylinder (14) is connected with the center of the connecting rod (13).

4. The building fire alarm device according to claim 3, wherein: The inner part of the vertical groove is provided with an inner rod (15) on both sides, the rear side ends of the sliding plates (12) are respectively slidably sleeved on the surfaces of the two inner rods (15), the surface of the inner rod (15) is sleeved with a spring (16), the bottom end of the spring (16) is connected with the top surface of the sliding plate (12), the top end of the spring (16) is connected with the top surface of the inner side of the vertical groove, and the spring (16) is in a compressed state.

5. The building fire alarm device according to claim 4, wherein: The connecting rod (13) is sleeved with a rotating plate (17) at both ends, the top end of the rotating plate (17) is hingedly connected with the bottom end of a sliding block (18), the top end of the sliding block (18) is connected with the bottom surface of the moving frame (7), and the top surface of the outer frame (2) is provided with a sliding groove (19) which is slidably connected with the sliding block (18), when the sliding block (18) slides forward and backward in the sliding groove (19), the sliding block (18) drives the moving frame (7) to slide forward and backward on the top surface of the outer frame (2).

6. The building fire alarm device according to claim 1, wherein: The drainage structure further comprises an inner ring (20) inside the drainage frame (9), the inner ring (20) is sleeved on the surface of the drainage pipe (10), the surface of the drainage pipe (10) is sleeved with an elastic element (21), the top end of the elastic element (21) is connected to the outer side of the circumference of the drainage pipe (10), the bottom end of the elastic element (21) is attached to the top surface of the inner ring (20), and the bottom end of the drainage pipe (10) is located at the bottom of the inner ring (20).

7. The building fire alarm device according to claim 6, characterized in that: The top of the drainage frame (9) is provided with a sleeve ring (22), the bottom end of the drainage pipe (10) is spirally buckled inside the sleeve ring (22), the top end of the drainage pipe (10) is fixed with a circular plate, the diameter of the circular plate is greater than the outer diameter of the sleeve ring (22), and the top surface of the moving frame (7) is provided with a strip groove (23) corresponding to the sleeve ring (22).

8. The building fire alarm device according to claim 7, characterized in that: The inner side of the drainage frame (9) is provided with a ring frame (24), the inner ring (20) is inside the ring frame (24), and the outer side of the circumference of the inner ring (20) is attached to the inner side wall of the ring frame (24), the bottom of the inner ring (20) is provided with a blocking ring (25), and the blocking ring (25) is sleeved on the bottom end of the drainage pipe (10).

9. The building fire alarm device according to claim 8, characterized in that: The bottom surface of the moving frame (7) is provided with a through groove corresponding to the blocking ring (25), the bottom surface of the blocking ring (25) is flush with the bottom surface of the moving frame (7), the bottom surface of the blocking ring (25) is attached to the top surface of the outer frame (2), and the top surface of the blocking ring (25) is attached to the bottom surface of the inner ring (20).

10. The building fire alarm device according to claim 6, characterized in that: The outer side of the circumference of the drainage pipe (10) is annularly arranged with a plurality of through holes (26), the through holes (26) are inside the inner ring (20), and the inner side of the drainage frame (9) is communicated with the inside of the drainage pipe (10) through the plurality of through holes (26).

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