Diversion smoke exhaust fireproof valve

Abstract

The invention relates to the technical field of fireproof valves, and discloses a flow guide smoke exhaust fireproof valve which comprises a main frame body and a plurality of blades, the blades are evenly arranged in the main frame body in the vertical direction, the blades and the main frame body are connected through rotating shafts, limiting angle steel is connected to the four corners of the main frame body through bolts, and magnetic attraction strips are arranged on the edges of the blades. Magnetic attraction strips are arranged on the blades, magnetic attraction plates matched with the magnetic attraction strips are arranged on the edges of the adjacent blades, the magnetic attraction strips attract the magnetic attraction plates on the adjacent blades, a plurality of magnets evenly distributed in the vertical direction are arranged on the limiting angle steel, and the magnets on the blades and the magnets on the limiting angle steel attract each other and are distributed in a staggered mode so that the blades and the limiting angle steel can be sealed and closed. By means of the magnetic attraction sealing structures between the blades and the limiting angle steel and the magnetic attraction strips and the magnetic attraction plates between the blades, it can be ensured that a tight closed structure is formed when the fireproof valve is in a closed state, airflow leakage is effectively prevented, and the sealing effect and the overall reliability of the fireproof valve are improved.

Description

Technical Field

[0001] The invention relates to the technical field of fire dampers, and in particular to a smoke diversion and exhaust fire damper. Background Art

[0002] Smoke exhaust fire dampers are an important part of the building ventilation system. Their main function is to prevent smoke and flames from spreading along the ventilation ducts by closing the blades of the fire dampers in the event of a fire, thereby ensuring the safety of the interior of the building. At the same time, under normal ventilation conditions, the fire dampers should be able to provide good air circulation to ensure indoor air quality. Therefore, smoke exhaust fire dampers not only need to have the performance of rapid response in the event of a fire, but also should have high ventilation efficiency and stability in daily use to avoid mechanical wear and functional failure caused by frequent opening and closing.

[0003] In the prior art, smoke exhaust fire dampers usually open and close their blades through manual control or a single electric control method. When a fire occurs, the blades of the fire damper will receive a signal from the fire alarm system and close to prevent the spread of smoke and flames. However, the sealing effect of existing smoke exhaust fire dampers is poor, and the blades are prone to poor sealing and airflow leakage after closing. In addition, after long-term use, the contact surface between the blades and the rotating shaft of the existing fire damper is prone to wear due to the large friction, resulting in poor rotation or jamming of the blades, affecting the service life and fire prevention effect of the fire damper. Existing smoke exhaust fire dampers still have many shortcomings in overall performance and reliability.

[0004] The problem in the prior art is that the smoke exhaust fire damper has poor sealing performance when the blades are closed, which easily causes smoke and flames to spread through the ventilation duct when a fire occurs, and fails to form an effective fire isolation barrier, thereby reducing the overall safety of the fire damper. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a diversion smoke exhaust fire damper, which solves the problem that the sealing performance of the smoke exhaust fire damper is poor when the blades are closed, which easily causes smoke and flames to spread through the ventilation duct when a fire occurs and fails to form an effective fire isolation barrier.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a diversion smoke exhaust fire damper, comprising: A main frame and a plurality of blades, wherein the blades are evenly arranged along the vertical direction inside the main frame, the blades are connected to the main frame through a rotating shaft, the four corners of the main frame are bolted to limited angle steels, the edges of the blades are provided with magnetic strips, and the edges of adjacent blades are provided with magnetic plates that cooperate with the magnetic strips, the magnetic strips are adsorbed with the magnetic plates on the adjacent blades, the limited angle steels are provided with a plurality of magnets evenly distributed along the vertical direction, the magnets on the blades and the magnets on the limited angle steels attract each other and are staggered, so as to seal and close the blades and the limited angle steels; An actuator controller is used to drive the blades to rotate and open and close. The actuator controller is connected to the linkage plate through a rotating shaft, and the linkage plate is connected to each blade through a transmission member; The sensor includes a temperature sensor, a smoke sensor and a control processing module. The temperature sensor and the smoke sensor are used to monitor the ambient temperature and smoke concentration. The sensor sends instructions to the execution controller, and the execution controller is used to drive each blade to close to prevent smoke and flames from spreading through the ventilation duct.

[0007] Preferably, a plurality of cylindrical flow grooves are evenly distributed on the surface of the blade along the length direction of the blade. When the blade is in an open state, the flow grooves are used to reduce the resistance of air flow. When the blade is in a closed state, the flow grooves form a hollow structure with adjacent blades.

[0008] Preferably, the portion where the blade contacts the shaft is provided with a triangular protrusion, and oil-soaked cotton is provided inside the shaft. When the blade rotates, the triangular protrusion squeezes the oil-soaked cotton, and lubricating oil is applied to the contact surface between the shaft and the blade.

[0009] Preferably, the blade is in contact with the limit block when in the closed state, and the surface of the limit block is provided with an arc-shaped surface. The blade can slide along the arc-shaped surface of the limit block when closed, and the limit block slides in the sliding sleeve along the sliding rod. The sliding rod and the sliding sleeve quality inspection sleeve are provided with a reset spring. After the blade is closed to the complete position, the reset spring returns to its original position, and the limit block is pushed back to the initial position to prevent the blade from being accidentally opened due to deviation due to the influence of airflow.

[0010] Preferably, the sensor also includes a self-check module and a fault alarm module. The self-check module is used to periodically detect the working status of the temperature sensor, the smoke sensor and the control processing module. When the self-check module detects that a certain sensor is working abnormally, the fault alarm module can send out an alarm signal and transmit the fault information to the control processing module.

[0011] Preferably, after receiving the signal from the temperature sensor or the smoke sensor, the control processing module is used to analyze the change trend of the ambient temperature or the smoke concentration and send a fire alarm signal to the fire alarm system.

[0012] Preferably, when the execution controller drives the rotating shaft to rotate, it can drive all the blades to rotate synchronously, and the blades are connected to the linkage plate through a transmission member, and the transmission member can drive the rotating shaft to rotate the upper and lower ends of the blades.

[0013] Preferably, an anti-slip mechanism is provided between the slide rod and the slide sleeve, and the anti-slip mechanism includes a rubber coating material on the outer wall of the slide rod and the inner wall of the slide sleeve. When the slide rod slides in the slide sleeve, the anti-slip mechanism can prevent the slide rod from deviating along the slide sleeve.

[0014] Working principle: When the execution controller receives the opening or closing command, it first drives the middle shaft to rotate, and then drives the blades to rotate synchronously through the linkage plate. A cylindrical flow groove is set on the surface of the blade. When the blade is in the open state, the flow groove can effectively reduce the resistance of air flow, thereby optimizing the air circulation effect. When the blade rotates to the closed state, the blade is adsorbed to the magnetic plate on the adjacent blade through the magnetic strip on the edge. At the same time, the magnets on the limit angle steel and the magnets on the edge of the blade attract each other, so that the blade and the main frame are firmly connected to form a tight closed structure, thereby preventing airflow leakage; the magnets on the edge of the blade are evenly distributed, and when closed, they are staggered with the magnets on the limit angle steel. The close fit between the blades is achieved through magnetic attraction, further improving the sealing effect. The magnets of adjacent blades are staggered, which can avoid magnetic interference when the blade is closed, forming a stable engagement state, which can achieve effective sealing, prevent airflow leakage, and improve the overall sealing performance of the fire damper; A triangular protrusion is provided at the part where the blade contacts the shaft. When the blade rotates, the triangular protrusion will squeeze the oil-soaked cotton inside the shaft and evenly spread the lubricating oil on the contact surface between the shaft and the blade, thereby realizing automatic lubrication. When the blade rotates to the closed position, it will contact the limit block. Since the surface of the limit block has a certain curvature, the blade can slide along the surface of the limit block during rotation. At the same time, due to the pressure of the blade, the limit block will slide along the slide rod in the sliding sleeve, thereby compressing the reset spring. When the blade rotates to the fully closed position, the reset spring returns to its original position, and the limit blocks on both sides can lock the blade to prevent the blade from being deflected or accidentally opened due to the influence of airflow, thereby ensuring the stability of the blade in the closed state. The sensor includes a sensor automatic control system composed of a temperature sensor, a smoke sensor and a control processing module. The system can monitor the ambient temperature and smoke concentration in real time. When the ambient temperature or smoke concentration exceeds the set safety threshold, the temperature sensor and the smoke sensor will immediately send an alarm signal to the control processing module. After receiving the signal, the control processing module analyzes whether there is a fire risk in the current environment through a built-in algorithm. Once it is determined that there is a fire risk, the control processing module will send a closing instruction to the execution controller, and the execution controller will immediately drive the blades to close to prevent smoke and flames from spreading through the ventilation duct during a fire; during the closing process of the fire damper, the sensor automatic control system will monitor the status of the blades in real time and determine whether the blades are completely closed through the self-test function. When the system detects that the blades are not fully closed, it will send a closing instruction to the execution controller again until the blades are fully closed. At the same time, the system can also monitor the working status of the temperature sensor or smoke sensor. If a sensor failure is detected, an alarm signal will be issued immediately to remind maintenance personnel to carry out timely maintenance to ensure the normal operation of the fire damper. In addition, when a circuit failure or external interference causes the sensor or execution controller to fail to work properly, the control processing module can automatically start the emergency protection mode, and manually close the blades through mechanical limit blocks and reset springs to ensure that the fire damper can be physically closed in any case, providing a reliable fire isolation function. At the same time, the system's built-in power switching device can switch to the backup power supply when the power is interrupted to ensure the continuous operation of the system. When the execution controller is started, it will synchronously transmit the rotation of the shaft to each blade through the transmission member to achieve the linkage rotation of the blade. It ensures that all blades can complete the opening or closing operation at the same time under the unified control of the execution controller, thereby improving the response speed and operation efficiency of the fire damper.

[0015] The present invention provides a smoke exhaust fire damper. It has the following beneficial effects: 1. The present invention can ensure that the fire damper forms a tight closed structure when in the closed state through the magnetic sealing structure between the blades and the limiting angle steel and the magnetic strips and magnetic plates between the blades, effectively preventing airflow leakage and improving the sealing effect and overall reliability of the fire damper.

[0016] 2. The automatic lubrication between the blades and the rotating shaft of the present invention can automatically adjust the amount of lubricating oil applied during the opening and closing of the blades, reducing the problem of blade jamming or wear caused by friction, thereby increasing the service life and operational stability of the fire damper.

[0017] 3. The sensor automatic control system of the present invention can realize intelligent linkage with other fire-fighting equipment. Through the real-time monitoring function of temperature sensors and smoke sensors, it ensures that the fire damper can respond quickly when a fire occurs and form an effective smoke and fire barrier. At the same time, it can work in coordination with other fire-fighting equipment such as smoke exhaust systems and sprinkler systems to improve overall fire safety.

[0018] 4. The self-check module and fault alarm module of the sensor automatic control system of the present invention can realize timely alarm and diagnosis of fire damper failure, and can start the emergency protection mode in the case of circuit failure or signal interference, ensuring that the fire damper can be physically closed under any circumstances, thereby providing a reliable fire isolation function. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A perspective view of the present invention; Figure 2 It is a rear perspective schematic diagram of the present invention; Figure 3 It is a schematic diagram of the blade explosion structure of the present invention; Figure 4 for Figure 3 The enlarged schematic diagram of point B in the middle; Figure 5 It is a schematic diagram of the limiting angle steel structure of the present invention; Figure 6 for Figure 5 The enlarged schematic diagram at A in the middle; Figure 7 It is a schematic diagram of the rotating shaft structure of the present invention; Figure 8 It is a schematic diagram of the blade flipping structure of the present invention; Fig. 9 It is a schematic diagram of the main frame structure of the present invention; Fig.10 for Fig. 9 The enlarged schematic diagram at C in the middle; Fig.11 It is a schematic diagram of the system flow of the present invention.

[0020] Among them, 1. Main frame; 2. Limit angle steel; 3. Reinforcement plate; 4. Rotating shaft; 5. Blade; 6. Execution controller; 7. Sensor; 8. Circulation slot; 9. Transmission part; 10. Linkage plate; 11. Limit block; 12. Magnetic strip; 13. Magnetic plate; 14. Magnet; 15. Triangular protrusion; 16. Oil-soaked cotton; 17. Sliding sleeve; 18. Reset spring; 19. Sliding rod. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Please refer to the attached Figure 1 -Attached Figure 6 The embodiment of the present invention provides a smoke exhaust fire damper, including: A main frame 1 and multiple blades 5, the blades 5 are evenly arranged along the vertical direction inside the main frame 1, the blades 5 are connected to the main frame 1 through a rotating shaft 4, the four corners of the main frame 1 are bolted to the limited angle steel 2, the edges of the blades 5 are provided with magnetic strips 12, and the edges of adjacent blades 5 are provided with magnetic plates 13 that cooperate with the magnetic strips 12, the magnetic strips 12 are adsorbed with the magnetic plates 13 on the adjacent blades 5, and the limited angle steel 2 is provided with multiple magnets 14 evenly distributed along the vertical direction, the magnets 14 on the blades 5 and the magnets 14 on the limited angle steel 2 attract each other, so as to seal and close the blades 5 and the limited angle steel 2.

[0023] The main frame 1 is a rectangular frame structure, installed at the intersection of the ventilation duct, and is used to support and fix the various components of the entire fire damper. The main frame 1 is made of a solid metal material, which can withstand the influence of external airflow, pressure and temperature, and ensure the stability and durability of the fire damper under various environmental conditions; the blade 5 is a plate-like structure, evenly arranged along the vertical direction inside the main frame 1, and each blade 5 is connected to the main frame 1 through a rotating shaft 4. The blade 5 is connected to the main frame 1 through the rotating shaft 4, and can realize the synchronous rotation of the blade 5 under the drive of the execution controller 6, ensuring that the fire damper can maintain good stability in both the open and closed states. The blade 5 adopts a plate-like structure and is evenly arranged along the vertical direction inside the main frame 1. There are multiple cylindrical flow grooves 8 evenly distributed on the surface of the blade 5 along its length direction. The flow groove 8 is used to reduce the resistance of air flow when the blade 5 is in the open state, thereby improving the ventilation efficiency. The edge of the blade 5 is provided with a magnetic attraction strip 12, and a magnetic attraction plate 13 cooperating with the magnetic attraction strip 12 is also provided between adjacent blades 5. When the blades 5 are closed, the magnetic strips 12 and the magnetic plates 13 on the adjacent blades 5 can be attracted to each other to form a sealed connection structure between the blades 5. In addition, the blades 5 can form a stable snap connection with the magnets 14 on the limiting angle steel 2 in the closed state, effectively preventing airflow leakage.

[0024] The limiting angle steel 2 is fixedly connected along the four corners of the main frame 1, and multiple magnets 14 arranged in the vertical direction are evenly distributed inside. When the blade 5 is closed, the magnets 14 on the edge of the blade 5 can attract each other with the magnets 14 on the limiting angle steel 2 to form a stable snap connection. The magnetic seal can avoid mutual interference between adjacent magnets, and can achieve a tight connection between the blade 5 and the limiting angle steel 2 when the blade 5 is closed, thereby effectively preventing airflow leakage between the blades 5 or between the blade 5 and the main frame 1, and improving the overall sealing effect of the fire damper.

[0025] Please refer to the attached Figure 3 The execution controller 6 is used to drive the rotation of the blades 5 to open and close. The execution controller 6 is connected to the linkage plate 10 through the rotating shaft 4, and the linkage plate 10 is connected to each blade 5 through the transmission member 9.

[0026] The execution controller 6 receives the opening or closing instruction from the sensor 7 or the external control system through the electrical control module. The execution controller 6 is connected to the rotating shaft 4, connected to the linkage plate 10 through the rotating shaft 4, and connected to each blade 5 through the transmission member 9. When the execution controller 6 receives the opening or closing signal, it can drive the linkage plate 10 to rotate through the rotating shaft 4, so as to realize the synchronous linkage between all blades 5 through the transmission member 9. This linkage structure can ensure that all blades 5 move synchronously during the opening or closing process, avoid the deviation or jamming of a single blade 5 due to uneven force, and improve the overall operating efficiency of the fire damper.

[0027] Please refer to the attached Figure 7 The part where the blade 5 contacts the shaft 4 is provided with a plurality of triangular protrusions 15, which can squeeze the oil-soaked cotton 16 inside the shaft 4 when the blade 5 rotates, and evenly apply the lubricating oil in the oil-soaked cotton 16 to the contact surface between the shaft 4 and the blade 5, thereby realizing the automatic lubrication function. The lubricating oil can effectively reduce the mechanical friction between the blade 5 and the shaft 4, prevent the blade 5 from rotating poorly or jamming due to friction and wear during long-term use, and ensure that the blade 5 can maintain a stable and smooth rotation state when opening and closing, thereby improving the overall performance and service life of the fire damper.

[0028] The triangular protrusion 15 and the oil-soaked cotton 16 cooperate with each other, so that the lubricating oil can automatically adjust the amount of application during the rotation of the blade 5 to maintain the lubrication state between the shaft 4 and the blade 5. The lubricating oil application area adopts a sealed design, which can effectively prevent the lubricating oil from leaking or losing during use, thereby ensuring the stability and reliability of the lubricating device in long-term use. In addition, the automatic lubrication between the blade 5 and the shaft 4 can reduce the problem of poor rotation of the blade 5 caused by friction, and effectively improve the operational stability and durability of the fire damper during long-term use.

[0029] Please refer to the attached Figure 4 , Fig.10 When the blade 5 rotates to the closed state, it contacts the limit block 11. The surface of the limit block 11 has an arc surface with a certain curvature, so that the blade 5 can slide along the arc surface during the closing process and exert a certain pressure on the limit block 11. When the limit block 11 is subjected to the pressure of the blade 5, it can slide along the slide rod 19 in the sliding sleeve 17, thereby compressing the reset spring 18. When the blade 5 is completely closed, the reset spring 18 can return to its original position and push the limit block 11 back to the initial position to prevent the blade 5 from being deviated or accidentally opened due to the influence of external airflow in the closed state.

[0030] Please refer to the attached Fig. 9 -Attached Fig.10 An anti-slip mechanism is provided between the slide bar 19 and the slide sleeve 17, and the anti-slip mechanism includes a rubber coating material on the outer wall of the slide bar 19 and an anti-slip groove structure on the inner wall of the slide sleeve 17. When the slide bar 19 slides in the slide sleeve 17, the anti-slip mechanism can prevent the slide bar 19 from deviating along the slide sleeve 17, thereby ensuring the contact stability between the limit block 11 and the blade 5 when closed, and further improving the sealing effect and overall stability of the blade 5 in the closed state.

[0031] Please refer to the attached Fig.11 The diversion smoke exhaust fire damper is equipped with a temperature sensor and a smoke sensor for real-time monitoring of the ambient temperature and smoke concentration around the fire damper. The temperature sensor and the smoke sensor are connected to the control processing module through an electrical connection. When the ambient temperature or smoke concentration exceeds the set safety threshold, the sensor can immediately send an alarm signal to the control processing module. After receiving the alarm signal, the control processing module can determine whether there is a fire risk in the current environment based on the built-in algorithm. Once it is determined that there is a fire risk, the control processing module will send a closing instruction to the execution controller 6, and the execution controller 6 will then drive the blade 5 to close the operation to prevent smoke and flames from spreading through the ventilation duct during a fire.

[0032] The sensor automatic control system also includes a self-check module and a fault alarm module. The self-check module can regularly detect the working status of the temperature sensor, smoke sensor and control processing module. When a sensor or control processing module is detected to have a fault, the fault alarm module can send out an alarm signal and transmit the fault information to the control processing module. The fault alarm module can send out an alarm signal in the form of light or sound to remind maintenance personnel to carry out maintenance in time to ensure the normal operation of the fire damper.

[0033] When the fire damper fails to work properly due to circuit failure or external interference such as voltage fluctuation or signal interference, the control processing module can automatically start the emergency protection mode and manually close the blade 5 through the mechanical limit block 11 and the reset spring 18, ensuring that the fire damper can be physically closed in any case and providing a reliable fire isolation function. At the same time, the system has a built-in power switching device that can automatically switch to the backup power supply when the power is interrupted to ensure the continuous operation of the system, thereby improving the safety and stability of the fire damper in special environments.

[0034] The sensor automatic control system of the diversion smoke exhaust fire damper can be used in conjunction with other fire-fighting equipment in the building, such as the fire alarm system, sprinkler system, and smoke exhaust system. When the fire damper sensor detects a fire and closes the blade 5, it can simultaneously trigger the opening of the smoke exhaust system and the start of the sprinkler system, forming an intelligent fire-fighting linkage mode of multi-system collaborative operation, effectively preventing the spread of fire and minimizing the damage to the building caused by the fire.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A smoke exhaust fire damper, characterized in that: include: A main frame (1) and a plurality of blades (5), wherein the blades (5) are evenly arranged along the vertical direction inside the main frame (1), the blades (5) are connected to the main frame (1) via a rotating shaft (4), the four corners of the main frame (1) are bolted to the limiting angle steel (2), the edges of the blades (5) are provided with magnetic attraction strips (12), and the edges of adjacent blades (5) are provided with magnetic attraction plates (13) that cooperate with the magnetic attraction strips (12), the magnetic attraction strips (12) and the magnetic attraction plates (13) on the adjacent blades (5) are attracted to each other, the limiting angle steel (2) is provided with a plurality of magnets (14) evenly distributed along the vertical direction, the magnets (14) on the blades (5) and the magnets (14) on the limiting angle steel (2) attract each other and are staggered, so as to seal and close the blades (5) and the limiting angle steel (2); An actuator controller (6) is used to drive the blades (5) to rotate and open and close, the actuator controller (6) being connected to a linkage plate (10) via a rotating shaft (4), and the linkage plate (10) being connected to each blade (5) via a transmission member (9); A sensor (7), wherein the sensor (7) comprises a temperature sensor, a smoke sensor and a control processing module, wherein the temperature sensor and the smoke sensor are used to monitor the ambient temperature and smoke concentration, and wherein the sensor (7) sends instructions to the execution controller (6), and the execution controller (6) is used to drive each blade (5) to close to prevent smoke and flame from spreading through the ventilation duct.

2. A smoke exhaust fire damper according to claim 1, characterized in that: A plurality of cylindrical flow grooves (8) are evenly distributed on the surface of the blade (5) along the length direction of the blade (5); when the blade (5) is in an open state, the flow grooves (8) are used to reduce the resistance of air flow; when the blade (5) is in a closed state, the flow grooves (8) form a hollow structure with adjacent blades (5).

3. The smoke exhaust fire damper according to claim 1, characterized in that: The portion of the blade (5) in contact with the rotating shaft (4) is provided with a triangular protrusion (15), and the interior of the rotating shaft (4) is provided with oil-soaked cotton (16). When the blade (5) rotates, the triangular protrusion (15) squeezes the oil-soaked cotton (16), and lubricating oil is applied to the contact surface between the rotating shaft (4) and the blade (5).

4. The smoke exhaust fire damper according to claim 1, characterized in that: The blade (5) contacts the limit block (11) when in a closed state. The limit block (11) is provided with an arc surface. The blade (5) can slide along the arc surface of the limit block (11) when closed. The limit block (11) slides along the slide rod (19) in the slide sleeve (17). The slide rod (19) and the slide sleeve (17) are provided with a return spring (18). After the blade (5) is closed to a complete position, the return spring (18) returns to its original position, and the limit block (11) is pushed back to its initial position, so as to prevent the blade (5) from being accidentally opened due to deviation caused by airflow.

5. The smoke exhaust fire damper according to claim 1, characterized in that: The sensor (7) further comprises a self-checking module and a fault alarm module. The self-checking module is used to regularly detect the working status of the temperature sensor, the smoke sensor and the control processing module. When the self-checking module detects that a certain sensor is working abnormally, the fault alarm module can issue an alarm signal and transmit the fault information to the control processing module.

6. The smoke exhaust fire damper according to claim 1, characterized in that: After receiving the signal from the temperature sensor or the smoke sensor, the control processing module is used to analyze the change trend of the ambient temperature or the smoke concentration and send a fire alarm signal to the fire alarm system.

7. The smoke exhaust fire damper according to claim 1, characterized in that: When the execution controller (6) drives the rotating shaft (4) to rotate, it can drive all the blades (5) to rotate synchronously, and the blades (5) are connected to the linkage plate (10) through the transmission member (9), and the transmission member (9) can drive the rotating shaft (4) to drive the upper and lower ends of the blades (5) to rotate.

8. The smoke exhaust fire damper according to claim 4, characterized in that: An anti-slip mechanism is provided between the slide bar (19) and the slide sleeve (17), the anti-slip mechanism comprising a rubber coating material on the outer wall of the slide bar (19) and the inner wall of the slide sleeve (17). When the slide bar (19) slides in the slide sleeve (17), the anti-slip mechanism can prevent the slide bar (19) from deviating along the slide sleeve (17).

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