A fire alarm device for fire safety

Abstract

The present invention relates to the field of fire safety, and in particular to a fire alarm device for fire safety, comprising an exhaust duct, a smoke sensor is fixedly installed on the inner circumferential wall of the exhaust duct, a shell is welded on the outer tube wall of the exhaust duct, an electric push rod is fixedly installed on the top of the shell, an inner shell is fixedly installed on the telescopic end of the bottom of the electric push rod, an inner cavity of the inner shell is provided with an inner gear ring and an inner ring, and the inner gear ring is rotatably connected to the inner circumferential wall of the inner shell, a plurality of telescopic rods 1 are fixedly installed on the top of the inner gear ring and the inner ring, a cross plate is fixedly installed on the top of each of the telescopic rods 1, a storage frame is welded between each two adjacent cross plates, a sliding rod 1 is slidably provided on the top of each of the storage frames, an electric fan is set in operation, and the external airflow entrains the smoke and enters the exhaust duct through the second air hole and the first air hole in turn, and the smoke alarm in the exhaust duct sends out an alarm signal after detecting the smoke, so as to perform self-check of the smoke alarm.

Description

Technical Field

[0001] The present invention relates to the field of fire safety, and in particular to a fire alarm device for fire safety. Background Art

[0002] The background technology of fire alarm devices for fire safety mainly stems from the demand for early detection and rapid response to fire. With the continuous increase of modern buildings and facilities, the potential fire hazards have also increased accordingly, so it is particularly important to set up fire-fighting facilities with complete functions. As a key component of the fire protection system, the fire alarm device can detect and sound the alarm in time at the early stage of the fire, thereby effectively reducing the losses caused by the fire. The working principle of the fire alarm device is usually to sense the physical quantities such as smoke, heat, and light radiation generated by the fire through the fire detector, and convert these physical quantities into electrical signals and transmit them to the fire alarm controller. The cold storage environment is relatively special, and the items stored inside are usually flammable, especially grease, alcohol, etc. At the same time, the cold storage is in a low temperature state all year round. Once a fire occurs, it will not only cause serious losses of life and property, but also may cause dangerous explosions. Therefore, the fire safety of the cold storage is particularly important. At present, the fire alarm equipment commonly used in cold storage is usually installed in the air outlet duct. Given that the air outlet duct is mainly used to remove excess heat and moisture inside the cold storage, its air circulation is relatively good. Therefore, once a fire occurs inside the cold storage and a large amount of smoke is generated, the fire alarm equipment located in the air outlet duct can quickly detect the fire and sound the alarm. However, since the air outlet duct is usually installed at a high position, and the smoke sensor in the fire alarm equipment is also installed inside the duct, this brings certain challenges to the maintenance and inspection of the equipment. Summary of the invention

[0003] The purpose of the present invention is to solve the problems in the background technology and to propose a fire alarm device for fire safety.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a fire alarm device for fire safety, comprising an exhaust duct, a smoke sensor is fixedly installed on the inner circumferential wall of the exhaust duct, a shell is welded on the outer wall of the exhaust duct, an electric push rod is fixedly installed on the top of the shell, an inner shell is fixedly installed on the telescopic end of the bottom of the electric push rod, an inner shell is fixedly installed, an inner ring and an inner ring are provided in the inner cavity of the inner shell, and the inner ring is rotatably connected to the inner circumferential wall of the inner shell, a plurality of telescopic rods are fixedly installed on the top of the inner ring and the inner ring, a cross plate is fixedly installed on the top of each telescopic rod, and a plurality of telescopic rods are fixedly installed on the outer circumferential wall of each telescopic rod. Each of the two adjacent horizontal plates is wound with a spring four, a storage frame is welded between each two adjacent horizontal plates, a slide rod one is slidably arranged on the top of each storage frame, a heating plate is fixedly installed between the bottoms of each two adjacent slide rods one, a spring one is wound on the outer peripheral wall of each slide rod one, and each spring one is respectively connected between the corresponding storage frame and the corresponding heating plate, a limiting ring is welded on the inner peripheral wall of the inner shell, a plurality of pressure rods are welded on the top of the inner cavity of the outer shell, and the bottoms of the plurality of pressure rods extend into the inner cavity of the inner shell, one side of the top of the inner shell is connected with an air intake pipe, and the air intake pipe extends upward to the top of the outer shell, and the inner peripheral wall of the air intake pipe An electric fan is fixedly installed on the wall, an air hole 1 is penetrated on the wall of the inner shell cavity, and air holes 2 and 3 are penetrated on the wall of the exhaust duct cavity. The side wall of the outer shell is connected with an insulation pipe, and a mounting plate is welded on the side of the insulation pipe away from the outer shell, and an alarm button is installed on the side wall of the mounting plate. When in use, the electric push rod drives the inner shell to move downward so that air hole 1 is aligned with air hole 2, and then the motor drives the gear to rotate, and the gear drives the inner gear ring, telescopic rod 1 and cross plate to rotate. Since one side of the top of the limit ring is convex, when one of the cross plates moves to the convex part of the top of the limit ring, the set cross plate will drive The corresponding storage frame, cigarette cake, slide bar 1 and heating plate move up; in the initial state, the top of the slide bar 1 is in contact with the bottom of the pressure rod, and when the horizontal plate drives the corresponding storage frame and cigarette cake to move up, the corresponding heating plate and the cigarette cake gradually approach and finally contact, and when the temperature of the heating plate reaches the combustion critical value of the cigarette cake, the corresponding cigarette cake will burn and produce a small amount of smoke, thereby realizing the ignition operation of a single cigarette cake; the set electric fan is running, and the external airflow carries the smoke through the air hole 2 and the air hole 1 in turn into the exhaust duct, and the smoke alarm in the exhaust duct sends out an alarm signal after detecting the smoke, thereby performing a self-check of the smoke alarm.

[0005] In the above-mentioned fire alarm device for fire safety, the heating plate is a ring-shaped structure.

[0006] In the above-mentioned fire alarm device for fire safety, a telescopic rod 2 is fixedly installed on the inner wall of the storage frame, a pressure plate is fixedly installed on the telescopic end at the bottom of the telescopic rod 2, a spring 3 is wound around the outer peripheral wall of the telescopic rod 2, and the spring 3 is connected between the pressure plate and the inner wall of the storage basket. The set pressure plate limits and fixes the cigarette cake inside the storage frame under the action of the elastic force of the spring 3.

[0007] In the above-mentioned fire alarm device for fire safety, an air outlet is opened on the bottom cavity wall of the inner shell, two sliding bars 2 are welded on the bottom of the inner cavity of the inner shell, and limiting plates are welded on the tops of the two sliding bars, and a sealing plate is slidably arranged between the two sliding bars, and springs 2 are wound around the outer peripheral walls of the two sliding bars, and the two springs are respectively connected between the corresponding limiting plates and the sealing plates, and a push rod is welded on the top of the inner cavity of the outer shell. After the smoke is completely discharged, the electric push rod drives the inner shell to continue to move downward, and the set push rod lifts the sealing plate, and then the external controller controls the heating plate and the electric fan to operate at the same time. The airflow stirred by the electric fan absorbs heat and heats up when passing through the heating plate, and then the heated airflow passes through the air outlet, the inner cavity of the outer shell and the insulation pipe in turn, and finally the airflow enters the cold storage, so as to blow hot air to the trapped people inside the cold storage, thereby slowing down the loss of body heat of the trapped people.

[0008] In the above-mentioned fire alarm device for fire safety, a drying box is fixedly installed on the side wall of the inner cavity of the air intake pipe. During daily use, the external controller can also control the operation of the heating plate and the electric fan at the same time. The airflow stirred by the electric fan removes the moisture contained in it after passing through the drying box, and then under the action of the heating plate, the airflow is converted into hot airflow, which can dry the cigarette cakes inside the storage frame.

[0009] In the above-mentioned fire alarm device for fire safety, a plurality of slots are formed through the top of the inner shell, and a plurality of pressure rods are slidably disposed in the corresponding slots.

[0010] In the above-mentioned fire alarm device for fire safety, a motor is fixedly installed at the bottom of the inner cavity of the inner shell, and a gear meshing with the inner gear ring is fixedly installed at the top output end of the motor. The motor drives the gear to rotate, and the gear drives the inner gear ring, telescopic rod 1 and cross plate to rotate.

[0011] Compared with the existing technology, the advantages of this fire alarm device for fire safety are:

[0012] 1. The electric fan is running, and the external airflow carries the smoke into the exhaust duct through the second and first air holes in turn. The smoke alarm in the exhaust duct detects the smoke and sends out an alarm signal, so as to perform self-check of the smoke alarm;

[0013] 2. In daily use, the external controller can also control the heating plate and the electric fan to work at the same time. The airflow stirred by the electric fan removes the moisture contained in it after passing through the drying box. Then, under the action of the heating plate, the airflow is converted into hot airflow, which can dry the cigarette cakes inside the storage frame;

[0014] 3. The airflow driven by the electric fan carries a large amount of smoke through the air hole 3 and the air hole 1 and enters the exhaust duct in turn. The smoke alarm in the exhaust duct detects the smoke and sends out an alarm signal, thereby conveying a trapped signal to outsiders; at the same time, a large amount of smoke escapes to the outside, which is more likely to attract the attention of others, which to a certain extent strengthens the alarm effect of conveying the trapped signal;

[0015] 4. The airflow stirred by the electric fan absorbs heat and heats up when passing through the heating plate. Then the heated airflow passes through the air outlet, the inner cavity of the shell and the insulation pipe in sequence, and finally enters the cold storage to blow hot air to the trapped people inside the cold storage, thereby slowing down the loss of body heat of the trapped people. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A structural schematic diagram of a fire alarm device for fire safety proposed by the present invention;

[0017] Figure 2 For the present invention Figure 1 A schematic diagram of the enlarged structure of part A;

[0018] Figure 3 It is a schematic diagram of the inner cavity structure of the housing of the present invention;

[0019] Figure 4 It is a schematic diagram of the inner shell structure of the present invention;

[0020] Figure 5 It is a schematic diagram of the structure of the limiting ring of the present invention;

[0021] Figure 6 It is a schematic diagram of the compression rod structure of the present invention;

[0022] Figure 7 For the present invention Figure 6 A schematic diagram of the enlarged structure of part B;

[0023] Figure 8 It is a schematic diagram of the motor structure of the present invention;

[0024] Fig. 9 For the present invention Figure 8 An enlarged schematic diagram of the C-section structure;

[0025] Fig.10 For the present invention Figure 8 An enlarged schematic diagram of the D-section structure.

[0026] In the figure: 1. exhaust duct; 2. outer shell; 3. electric push rod; 4. inner shell; 5. inner gear ring; 6. inner ring; 7. telescopic rod 1; 8. horizontal plate; 9. storage frame; 10. slide bar 1; 11. heating plate; 12. spring 1; 13. limit ring; 14. pressure rod; 15. air inlet pipe; 16. electric fan; 17. air hole 1; 18. air hole 2; 19. air hole 3; 20. insulation pipe; 21. installation plate; 22. alarm button; 23. telescopic rod 2; 24. pressure plate; 25. spring 3; 26. air outlet; 27. slide bar 2; 28. limit plate; 29. ​​sealing plate; 30. spring 2; 31. push rod; 32. drying box; 33. slot; 34. motor; 35. gear; 36. smoke sensor; 37. spring 4. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] Reference Figure 1-Figure 10A fire alarm device for fire safety comprises an exhaust pipe 1, a second air hole 18 and a third air hole 19 are provided on the cavity wall of the exhaust pipe 1, a smoke sensor 36 is fixedly installed on the inner circumferential wall of the exhaust pipe 1, a shell 2 is welded on the outer tube wall of the exhaust pipe 1, an electric push rod 3 is fixedly installed on the top of the shell 2, an inner shell 4 is fixedly installed on the telescopic end of the bottom of the electric push rod 3, an air hole 17 is provided on the cavity wall of the inner shell 4, an inner ring 5 and an inner ring 6 are provided in the inner cavity of the inner shell 4, and the inner ring 5 is rotatably connected to the inner circumferential wall of the inner shell 4, a motor 34 is fixedly installed at the bottom of the inner cavity of the inner shell 4, a gear 35 meshing with the inner ring 5 is fixedly installed at the top output end of the motor 34, and a plurality of telescopic rods are fixedly installed on the top of the inner ring 5 and the inner ring 6. 7, a cross plate 8 is fixedly installed on the top of each telescopic rod 7, a spring four 37 is wound on the outer peripheral wall of each telescopic rod 7, a storage frame 9 is welded between each two adjacent cross plates 8, a limit ring 13 is welded on the inner peripheral wall of the inner shell 4, and a cigarette cake is placed in the storage frame 9. When in use, the electric push rod 3 drives the inner shell 4 to move downward, so that the air hole 17 is aligned with the air hole 2 18, and then the motor 34 drives the gear 35 to rotate, and the gear 35 drives the inner gear ring 5, the telescopic rod 7 and the cross plate 8 to rotate. Since one side of the top of the limit ring 13 is convex, when one of the cross plates 8 moves to the convex part of the top of the limit ring 13, the set cross plate 8 will drive the corresponding storage frame 9, the cigarette cake, the slide rod 10 and the heating plate 11 to move upward, each A slide bar 10 is slidably provided on the top of the storage frame 9, and a heating plate 11 is fixedly installed between the bottoms of each two adjacent slide bars 10. A spring 12 is wound around the outer peripheral wall of each slide bar 10, and each spring 12 is respectively connected between the corresponding storage frame 9 and the corresponding heating plate 11. A plurality of pressure rods 14 are welded on the top of the inner cavity of the outer shell 2, and the bottoms of the plurality of pressure rods 14 extend into the inner cavity of the inner shell 4. A plurality of slots 33 are opened through the top of the inner shell 4, and the plurality of pressure rods 14 are respectively slidably provided in the corresponding slots 33. In the initial state, the top of the slide bar 10 is abutted against the bottom of the pressure rod 14. When the horizontal plate 8 drives the corresponding storage frame 9 and the cigarette cake to move upward, the corresponding heating plate 11 gradually approaches and finally connects with the cigarette cake. When the temperature of the heating plate 11 reaches the critical value of the combustion of the cigarette cake, the corresponding cigarette cake will burn and produce a small amount of smoke, thereby realizing the ignition operation of a single cigarette cake; wherein, a telescopic rod 23 is fixedly installed on the inner wall of the storage frame 9, and a pressing plate 24 is fixedly installed on the telescopic end of the bottom of the telescopic rod 23, and a spring 3 25 is wound around the outer peripheral wall of the telescopic rod 23, and the spring 3 25 is connected between the pressing plate 24 and the inner wall of the storage basket. The set pressing plate 24 limits and fixes the cigarette cake inside the storage frame 9 under the action of the elastic force of the spring 3 25. At the same time, the heating plate 11 is an annular structure, and the inner circle diameter of the heating plate 11 is larger than the outer circle diameter of the pressing plate 24, so that the corresponding heating plate 11 and the corresponding pressing plate 24 do not conflict with each other during the downward movement;An air inlet pipe 15 is connected to one side of the top of the inner shell 4, and the air inlet pipe 15 extends upward to the top of the outer shell 2. An electric fan 16 is fixedly installed on the inner peripheral wall of the air inlet pipe 15. An insulation pipe 20 is connected to the side wall of the outer shell 2. A mounting plate 21 is welded on the side of the insulation pipe 20 away from the outer shell 2. An alarm button 22 is installed on the side wall of the mounting plate 21. When the electric fan 16 is in operation, the external airflow entrains smoke and enters the exhaust pipe 1 through the air hole 2 18 and the air hole 1 17 in sequence. The smoke alarm in the exhaust pipe 1 sends an alarm signal after detecting the smoke, so as to perform self-test of the smoke alarm; wherein, a drying box 32 is fixedly installed on the side wall of the inner cavity of the air inlet pipe 15. In daily use, the airflow stirred by the electric fan 16 removes the moisture contained in the airflow after passing through the drying box 32. Then, under the action of the heating plate 11, the airflow is converted into hot airflow, which can dry the smoke cake inside the storage frame 9. ;

[0030] Furthermore, an air outlet 26 is provided on the bottom cavity wall of the inner shell 4, two sliding rods 27 are welded on the bottom of the inner cavity of the inner shell 4, and a limit plate 28 is welded on the top of the two sliding rods. A sealing plate 29 is slidably arranged between the two sliding rods 27, and a spring 230 is wound around the outer peripheral wall of the two sliding rods 27, and the two springs 230 are respectively connected between the corresponding limit plates 28 and the sealing plates 29, and a push rod 31 is welded on the top of the inner cavity of the outer shell 2. After the smoke is completely discharged, the electric push rod 3 drives the inner shell 4 to continue to move downward, and the set push rod 31 lifts the sealing plate 29, and then the external controller controls the heating plate 11 and the electric fan 16 to operate simultaneously. The airflow stirred by the electric fan 16 absorbs heat and heats up when passing through the heating plate 11, and then the heated airflow passes through the air outlet 26, the inner cavity of the outer shell 2 and the insulation pipe 20 in turn, and finally this airflow enters the cold storage, so as to blow hot air to the trapped people inside the cold storage, thereby slowing down the body heat loss of the trapped people.

[0031] Working principle: Before use, install this fire alarm device at the end of the cold storage outlet duct, and connect the top of the exhaust duct 1 with the end of the cold storage outlet duct, then fix the mounting plate 21 at the end of the insulation tube 20 on the wall inside the cold storage, and plug the sealing plug at the end of the insulation tube 20; then place several cigarette cakes in the corresponding storage frame 9 in turn, and then place the desiccant in the drying box 32; when in use, the electric push rod 3 drives the inner shell 4 to move downward, so that the air hole 17 is aligned with the air hole 2 18, and then the motor 34 drives the gear 35 to rotate, and the gear 35 drives the inner gear ring 5, the telescopic rod 1 7 and the cross plate 8 to rotate. Since one side of the top of the limit ring 13 is convex, when one of the cross plates 8 moves to the convex part of the top of the limit ring 13, it is set The horizontal plate 8 will drive the corresponding storage frame 9, the cigarette cake, the slide bar 10 and the heating plate 11 to move upward. Since the top of the slide bar 10 is in contact with the bottom of the pressure rod 14 in the initial state, when the horizontal plate 8 drives the corresponding storage frame 9 and the cigarette cake to move upward, the corresponding heating plate 11 gradually approaches and finally contacts the cigarette cake. Then the external controller controls the heating plate 11 to work. When the temperature of the heating plate 11 reaches the combustion critical value of the cigarette cake, the corresponding cigarette cake will burn and produce a small amount of smoke, so as to realize the ignition operation of a single cigarette cake. At the same time, the electric fan 16 is operated, and the external airflow carries the smoke through the air hole 2 18 and the air hole 1 17 into the exhaust pipe 1 in turn. The smoke alarm in the exhaust pipe 1 detects the smoke and sends an alarm signal, so as to perform self-check of the smoke alarm.

[0032] During daily use, the external controller can also control the heating plate 11 and the electric fan 16 to work at the same time. The airflow stirred by the electric fan 16 removes the moisture contained therein after passing through the drying box 32. Then, under the action of the heating plate 11, the airflow is converted into a hot airflow. The hot airflow can dry the cigarette cakes inside the storage frame 9, thereby preventing the cigarette cakes from being damp and unable to be ignited. The airflow for drying can be discharged into the air outlet pipe through the second air hole 18 and the first air hole 17;

[0033] When a staff member is trapped inside the cold storage, the staff member can press the alarm button 22 on the mounting plate 21 and pull out the sealing plug at the end of the insulation tube 20. After the external controller receives the signal from the alarm button 22, the electric push rod 3 first drives the inner shell 4 to move up, so that the air hole 17 is aligned with the air hole 3 19, and the inner shell 4 drives several storage frames 9 and several cigarette cakes inside it to move up. Since the top of the sliding rod 10 is abutted against the bottom of the pressure rod 14, when the inner shell 4 drives several cigarette cakes to move up, several heating plates 11 gradually approach and finally contact the corresponding cigarette cakes, and then the external controller controls the heating plate 11 to work. When the temperature of the heating plate 11 reaches the combustion critical value of the cigarette cake, several cigarette cakes burn at the same time and produce a large amount of smoke, so as to realize the ignition operation of several cigarette cakes, and the airflow driven by the electric fan 16 carries a large amount of smoke through in sequence. The smoke enters the exhaust duct 1 through the air hole 3 19 and the air hole 1 17. The smoke alarm in the exhaust duct 1 sends out an alarm signal after detecting the smoke, thereby transmitting a trapped signal to outsiders; at the same time, a large amount of smoke escapes to the outside, which is more likely to attract the attention of others. This to a certain extent strengthens the alarm effect of transmitting the trapped signal; in addition, after the smoke is completely discharged, the electric push rod 3 drives the inner shell 4 to continue to move downward, and the set top rod 31 lifts the sealing plate 29, and then the external controller controls the heating plate 11 and the electric fan 16 to operate at the same time. The airflow stirred by the electric fan 16 absorbs heat and heats up when passing through the heating plate 11, and then the heated airflow passes through the air outlet 26, the inner cavity of the outer shell 2 and the insulation pipe 20 in turn, and finally this airflow enters the cold storage, thereby blowing hot air to the trapped people inside the cold storage, thereby slowing down the body heat loss of the trapped people.

[0034] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece molding, etc., which are conventional means well known to those skilled in the art.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fire alarm device for fire safety, comprising an exhaust duct (1), characterized in that: A smoke sensor (36) is fixedly mounted on the inner circumferential wall of the exhaust duct (1); an outer shell (2) is welded to the outer tube wall of the exhaust duct (1); an electric push rod (3) is fixedly mounted on the top of the outer shell (2); an inner shell (4) is fixedly mounted on the telescopic end of the bottom of the electric push rod (3); an inner gear ring (5) and an inner ring (6) are arranged in the inner cavity of the inner shell (4); the inner gear ring (5) is rotatably connected to the inner circumferential wall of the inner shell (4); the tops of the inner gear ring (5) and the inner ring (6) are fixedly mounted. A plurality of telescopic rods (7) are fixedly installed, a horizontal plate (8) is fixedly installed on the top of each telescopic rod (7), a spring (37) is wound around the outer peripheral wall of each telescopic rod (7), a storage frame (9) is welded between each adjacent two horizontal plates (8), a sliding rod (10) is slidably arranged on the top of each storage frame (9), a heating plate (11) is fixedly installed between the bottoms of each adjacent two sliding rods (10), and each sliding rod (10) has an outer peripheral wall. A spring (12) is wound around the peripheral wall, and each spring (12) is respectively connected between the corresponding storage frame (9) and the corresponding heating plate (11). A limit ring (13) is welded on the inner peripheral wall of the inner shell (4). A plurality of pressure rods (14) are welded on the top of the inner cavity of the outer shell (2), and the bottoms of the plurality of pressure rods (14) extend into the inner cavity of the inner shell (4). One side of the top of the inner shell (4) is connected to an air intake pipe (15), and the air intake pipe (15) extends upward to the outer shell ( 2) top, an electric fan (16) is fixedly mounted on the inner wall of the air inlet pipe (15), an air hole (17) is penetrated through the cavity wall of the inner shell (4), an air hole (2) and an air hole (19) are penetrated through the cavity wall of the exhaust pipe (1), a heat preservation pipe (20) is connected to the side wall of the outer shell (2), a mounting plate (21) is welded to the side of the heat preservation pipe (20) away from the outer shell (2), and an alarm button (22) is mounted on the side wall of the mounting plate (21).

2. A fire alarm device for fire safety according to claim 1, characterized in that: The heating plate (11) is a ring-shaped structure.

3. A fire alarm device for fire safety according to claim 1, characterized in that: A second telescopic rod (23) is fixedly mounted on the inner wall of the storage frame (9); a pressing plate (24) is fixedly mounted on the telescopic end at the bottom of the second telescopic rod (23); a third spring (25) is wound around the outer peripheral wall of the second telescopic rod (23); and the third spring (25) is connected between the pressing plate (24) and the inner wall of the storage basket.

4. A fire alarm device for fire safety according to claim 1, characterized in that: An air outlet hole (26) is formed through the bottom cavity wall of the inner shell (4); two sliding rods (27) are welded to the bottom of the inner cavity of the inner shell (4); a limit plate (28) is welded to the top of the two sliding rods; a sealing plate (29) is slidably arranged between the two sliding rods (27); springs (30) are wound around the outer peripheral walls of the two sliding rods (27); and the two springs (30) are respectively connected between the corresponding limit plates (28) and the sealing plates (29); and a top rod (31) is welded to the top of the inner cavity of the outer shell (2).

5. A fire alarm device for fire safety according to claim 1, characterized in that: A drying box (32) is fixedly mounted on the inner cavity side wall of the air inlet pipe (15).

6. A fire alarm device for fire safety according to claim 1, characterized in that: A plurality of slots (33) are formed through the top of the inner shell (4), and a plurality of pressure rods (14) are slidably disposed in the corresponding slots (33).

7. A fire alarm device for fire safety according to claim 1, characterized in that: A motor (34) is fixedly mounted on the bottom of the inner cavity of the inner shell (4), and a gear (35) meshing with the inner gear ring (5) is fixedly mounted on the top output end of the motor (34).

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