Flame retardant device for fire damper of air conditioning system

Abstract

The utility model relates to the technical field of fireproof valves, in particular to an air conditioning system fireproof valve flame retardant device which comprises a body frame, a closing assembly, a driving assembly and a sliding assembly, the closing assembly comprises a plurality of fireproof blades, and the fireproof blades are rotationally connected into the body frame; the driving assembly is connected with the multiple fireproof blades so as to drive the multiple fireproof blades to rotate at the same time. The sliding assembly comprises a sliding part, a mounting frame, a fireproof plate and a telescopic part, a first annular groove is coaxially formed in the side, away from the interior of the pipeline, of the body frame, the first annular groove penetrates through the top of the body frame, the mounting frame slides from the sliding part to one side of the body frame, the fireproof plate is detachably connected into the mounting frame, and the fireproof plate and the mounting frame form a fireproof door. The fireproof door can close the opening of the body frame, the telescopic piece is located between the fireproof blade and the mounting frame, one end of the telescopic piece is hinged to the fireproof blade located at the top of the body frame, and the other end of the telescopic piece is hinged to the bottom of the mounting frame.

Description

Technical Field

[0001] The present application relates to the field of fire damper technology, and in particular to a fire retardant device for a fire damper of an air conditioning system. Background Art

[0002] Fire dampers are installed in the central air conditioning duct system. Their working principle is to control the temperature of fusible alloys and use gravity and spring mechanisms to close the valve. They are usually in an open state. In the event of a fire, when the gas temperature in the pipeline reaches a certain temperature, the fusible piece melts and the valve automatically closes under the action of the torsion spring force. They can meet the requirements of fire resistance stability and fire resistance integrity within a certain period of time and act as a smoke and fire barrier.

[0003] In the related art, an application document with publication number CN218818408U discloses a fire damper flame retardant device for an air conditioning system, comprising a fire damper flame retardant device body, a middle fire blade is arranged inside the fire damper flame retardant device body, a top fire blade is arranged in an area above the middle fire blade inside the fire damper flame retardant device body, a bottom fire blade is arranged in an area below the middle fire blade inside the fire damper flame retardant device body, a sealing baffle enters the smoke exhaust channel of the fire damper flame retardant device body and plays a fire-blocking role, and cooperates with the fire wall formed by the middle fire blade, the bottom fire blade and the top fire blade to form a multi-pass fire isolation zone, when the air flow temperature in the pipeline reaches 280°C, the valve is automatically closed by a temperature fuse equipped with a 280°C fusible metal, and the sealing baffle falls freely under the action of gravity to play a fire-blocking role.

[0004] With regard to the above-mentioned related technologies, when the air flow temperature in the pipeline reaches 280°C, the temperature fuse of the fusible metal automatically closes, and the sealing baffle falls freely under the action of gravity. The sealing baffle enters the smoke exhaust channel to play a fire-blocking role. However, as the number of uses increases, the sealing baffle falls freely under the action of gravity, and the sealing baffle may be damaged during use, resulting in reduced sealing performance. Utility Model Content

[0005] In order to improve the problem of reduced sealing performance, the present application provides a flame retardant device for a fire damper of an air conditioning system.

[0006] The present application provides an air conditioning system fire damper flame retardant device adopts the following technical solution:

[0007] A fire-retardant device for a fire damper of an air conditioning system, comprising a main body frame, a closing assembly, a driving assembly and a sliding assembly, wherein the closing assembly comprises a plurality of fire-proof blades, the plurality of fire-proof blades are rotatably connected to the main body frame, the plurality of fire-proof blades are used to close an opening of the main body frame, and the driving assembly is connected to the plurality of fire-proof blades to drive the plurality of fire-proof blades to rotate simultaneously;

[0008] The sliding component is located on the side of the fireproof blade away from the pipeline, and the sliding component includes a sliding part, a mounting frame, a fireproof board and a telescopic part. The main body frame is coaxially provided with a first annular groove on the side of the fireproof blade away from the pipeline, and the first annular groove runs through the top of the main body frame. The sliding part is fixed to the top of the main body frame, and the mounting frame is slidably arranged on the sliding part. The mounting frame is located in the first annular groove, and the mounting frame slides from the sliding part to one side of the main body frame. The fireproof board is detachably connected to the mounting frame, and the fireproof board is used for flame retardancy. The fireproof board and the mounting frame form a fireproof door, and the fireproof door can close the opening of the main body frame. The telescopic part is located between the fireproof blade and the mounting frame, and one end of the telescopic part is hinged to the fireproof blade located at the top of the main body frame, and the other end is hinged to the bottom of the mounting frame.

[0009] By adopting the above technical scheme, when a fire occurs, the temperature of the air flow in the pipeline increases, and the driving component is started. The driving component drives multiple fireproof blades to rotate simultaneously. Subsequently, multiple fireproof blades close the opening of the main body frame. During the rotation of the fireproof blades, the fireproof blades drive the telescopic parts to move. During the movement of the telescopic parts, the telescopic parts pull the installation frame to move. At this time, the installation frame slides from the sliding part to one side of the main body frame, the telescopic parts extend, and the fireproof board moves synchronously with the installation frame until the fire door closes the opening of the main body frame. The fireproof board and the fireproof blades can play a fire-blocking role. When the fire is handled, the driving component is started again. The driving component drives the fireproof blades to rotate, and the fireproof blades will The main body frame opening is opened, and at the same time, the telescopic part is started, the telescopic part is shortened, and the installation frame moves from the main body frame to the side of the sliding part until the installation frame is reset; when the fireproof board needs to be replaced, the personnel only need to remove the fireproof board on the installation frame, and then install the replaced fireproof board on the installation frame. Compared with the related art, the present application drives the fireproof blades to rotate through the driving component, and the telescopic part drives the installation frame to slide, which can improve the flame retardant performance of the fire damper of the air-conditioning system. After the fire is handled, the fireproof blades drive the telescopic part to move, and the telescopic part is shortened, so that the installation frame can be reset. The fireproof board and the installation frame are disassembled and connected, which is conducive to the replacement of the fireproof board and the improvement of the problem of reduced sealing performance.

[0010] Optionally, three second annular grooves are formed on the inner side wall of the installation frame, the second annular grooves penetrate the upper wall surface of the installation frame, and the three second annular grooves are spaced apart and distributed along the thickness direction of the installation frame;

[0011] The fireproof plate includes a flame retardant plate and two fireproof sealing plates. The flame retardant plate is inserted into the second ring groove located in the middle, and the two fireproof sealing plates are respectively inserted into the other two second ring grooves. The flame retardant plate and the fireproof sealing plates are both fitted with the second ring grooves.

[0012] By adopting the above technical solution, when a fire occurs, the installation frame moves from the sliding part to one side of the main body frame until the fire door formed by the installation frame and the fireproof board closes the main body frame. At this time, the flame retardant board is located between the two fireproof sealing boards. The flame retardant board and the two fireproof sealing boards are helpful to improve the flame retardant performance of the fire damper of the air-conditioning system; when the flame retardant board and the two fireproof sealing boards need to be replaced, the flame retardant board and the two fireproof sealing boards are each located in a second annular groove, and the flame retardant board and the two fireproof sealing boards can be replaced according to the damage condition. There is no need to replace all of them, which is convenient for cost saving. By arranging the coordination of the flame retardant board and the two fireproof sealing boards, on the one hand, it is helpful to improve the flame retardant performance of the fire damper of the air-conditioning system; on the other hand, there is no need to replace all of them, which is convenient for cost saving.

[0013] Optionally, it also includes a winch assembly, which is located between the fireproof blades and the mounting frame. The winch assembly includes a winch shaft, a winch member and a fireproof cloth. The winch shaft is horizontally rotatably connected to the main body frame, the winch shaft is close to the top of the main body frame, the winch shaft is arranged parallel to the fireproof blades, the winch member is connected to the winch shaft to drive the winch shaft to rotate, the fireproof cloth is wrapped around the outer peripheral wall of the winch shaft, one side of the fireproof cloth is fixed to the winch shaft, and the fireproof cloth is fixed to the bottom of the mounting frame away from the connection between the fireproof cloth and the winch shaft.

[0014] By adopting the above technical solution, when a fire occurs, the temperature of the airflow in the pipeline increases, and the driving component drives the fireproof blades to rotate. At the same time, the installation frame can move from the sliding member to one side of the main body frame. At the same time, the winch member is started, and the winch member drives the winch shaft to rotate. Subsequently, the installation frame pulls the fireproof cloth to move. At this time, the fireproof cloth can be unfolded to play a fireproof role; when the fire is handled, the driving component is started, and the driving component drives the fireproof blades to rotate. The fireproof blades open the opening of the main body frame. At the same time, the winch member is started, and the winch member drives the winch shaft to rotate, so that the fireproof cloth can be rolled up. The fireproof cloth can pull the installation frame to move. By setting the winch member, on the one hand, the fireproof cloth is unfolded to play a fireproof role; on the other hand, it is convenient to roll up the fireproof cloth and pull the installation frame to move.

[0015] Optionally, the closing assembly further comprises a plurality of rotating rods, the plurality of rotating rods are all rotatably connected to the main body frame, the setting direction of the rotating rods is consistent with the setting direction of the fireproof blades, and one of the fireproof blades is fixed to one of the rotating rods;

[0016] The driving assembly includes a transmission member and a driving member, the transmission member includes a plurality of sprockets and a chain, one of the sprockets corresponds to one of the rotating rods, the sprockets are coaxially fixed to the rotating rod, the plurality of sprockets are located on the same side of the main body frame, the chain is wound around the plurality of sprockets, and the driving member is connected to one of the sprockets to drive the sprocket to rotate.

[0017] By adopting the above technical solution, when a fire occurs, the temperature of the air flow in the pipe increases, the driving member is started, and the driving member drives one of the sprockets to rotate. Subsequently, the rotating sprocket drives the remaining sprockets to rotate through the chain. During the rotation of the sprocket, the rotating rod rotates with the sprocket, which can drive the fireproof blades to rotate, so that the fireproof blades close the opening of the main body frame. By setting the cooperation of the transmission member and the driving member, only one driving member is needed to drive multiple sprockets to rotate at the same time.

[0018] Optionally, the driving assembly also includes a temperature sensor, which is located on the side of the fireproof blade close to the inside of the pipe, and the temperature sensor is fixed in the main body frame. The temperature sensor is used to measure the air flow temperature in the pipe, and the temperature sensors are electrically connected to the driving member, the winch member and the telescopic member.

[0019] By adopting the above technical solution, when a fire occurs, the temperature of the air flow in the pipeline increases, and the temperature sensor measures that the air flow temperature is greater than the preset value. The temperature sensor simultaneously transmits signals to the driving member, the winch member and the telescopic member. The driving member drives the fireproof blades to rotate, the winch member drives the winch shaft to rotate, the telescopic member can extend or shorten, and the installation frame can move. By setting the temperature sensor, the temperature sensor measures that the air flow temperature is greater than the preset value, and no manual operation is required.

[0020] Optionally, the driving component further includes an alarm, the alarm is fixed to the main body frame, and the temperature sensor is electrically connected to the alarm.

[0021] By adopting the above technical solution, when a fire occurs, the temperature of the airflow in the pipeline rises, and the temperature sensor measures that the airflow temperature is greater than the preset value. The temperature sensor transmits a signal to the alarm, and the alarm sounds. By setting the alarm, personnel can be reminded to handle it in time.

[0022] Optionally, two side walls of the installation frame facing each other in the vertical direction are each provided with a plurality of balls, the plurality of balls are spaced apart in the vertical direction, the plurality of balls are rotatably connected to the installation frame, and the plurality of balls can slide in the first annular groove.

[0023] By adopting the above technical solution, the installation frame moves from the sliding member to one side of the main body frame. At this time, the ball bearing can slide in the first annular groove. The arrangement of the ball bearing is conducive to the sliding of the installation frame.

[0024] Optionally, at least one mounting ring is provided on the main body frame, and the mounting ring is fixed to the main body frame.

[0025] By adopting the above technical solution and providing a mounting ring, it is convenient for personnel to install the main body frame.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. Compared with the related art, the present application drives the fireproof blade to rotate through the driving assembly, and the telescopic member drives the installation frame to slide, which can improve the flame retardant performance of the fire damper of the air conditioning system. After the fire is handled, the fireproof blade drives the telescopic member to move, and the telescopic member is shortened, so that the installation frame can be reset. The fireproof board and the installation frame are disassembled and connected, which is conducive to the replacement of the fireproof board and the improvement of the problem of reduced sealing performance.

[0028] 2. By setting the flame retardant plate and two fireproof sealing plates, on the one hand, it is beneficial to improve the flame retardant performance of the fire damper of the air conditioning system; on the other hand, there is no need to replace all of them, which is convenient for saving costs;

[0029] 3. By setting up the winch assembly, on the one hand, the fireproof cloth can be unfolded to play a fire prevention role; on the other hand, it is convenient to roll up the fireproof cloth and pull the installation frame to move. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Schematic diagram of the overall structure of the first viewing angle in this embodiment;

[0031] Figure 2 is a cross-sectional view of the main body frame at a first viewing angle in this embodiment;

[0032] Figure 3 is a schematic diagram of the overall structure of the second viewing angle in this embodiment;

[0033] Figure 4 is a schematic diagram of the structure of the installation frame in this embodiment;

[0034] Figure 5 is a cross-sectional view of the main body frame at a second viewing angle in this embodiment;

[0035] Figure 6 Schematic diagram of the structure of the winch assembly in this embodiment.

[0036] Explanation of the accompanying drawings: 1. Main body frame; 11. Mounting ring; 12. First ring groove; 2. Closing assembly; 21. Rotating rod; 22. Fireproof blade; 3. Driving assembly; 31. Transmission member; 311. Sprocket; 312. Chain; 32. Driving member; 321. Placement seat; 322. Driving motor; 323. Protective cover; 33. Temperature sensor; 34. Alarm; 4. Sliding assembly; 41. Sliding member; 411. Sliding rod; 4111. Slide groove; 42. Mounting frame; 421. Ball bearing; 422. Second ring groove; 43. Fireproof board; 431. Flame retardant board; 432. Fireproof sealing board; 44. Telescopic member; 441. Electric telescopic rod; 5. Hoisting assembly; 51. Hoisting shaft; 52. Hoisting member; 53. Fireproof cloth. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-6 This application is described in further detail.

[0038] The present application discloses a fire retardant device for a fire damper of an air conditioning system. Figure 1 A flame retardant device for a fire damper of an air conditioning system includes a main body frame 1, a closing component 2, a driving component 3 and a sliding component 4. The closing component 2 is arranged on the main body frame 1, the driving component 3 is arranged on the closing component 2, and the sliding component 4 is arranged on the main body frame 1.

[0039] Reference Figure 1 In this embodiment, the main body frame 1 is a rectangular frame, and at least one mounting ring 11 is provided on the main body frame 1. In this embodiment, there are two mounting rings 11, and the two mounting rings 11 are coaxially arranged with the main body frame 1. The two mounting rings 11 are distributed along the depth direction of the main body frame 1, and the mounting rings 11 are welded to the main body frame 1.

[0040] Reference Figure 1 and Figure 2 The closing component 2 includes a plurality of rotating rods 21 and a plurality of fireproof blades 22. The plurality of rotating rods 21 are all located in the main body frame 1. The plurality of rotating rods 21 are all horizontally arranged, and the arrangement direction of the rotating rods 21 is perpendicular to the distribution direction of the two mounting rings 11. Both ends of the rotating rods 21 are rotatably connected to the main body frame 1. The distribution direction of the plurality of rotating rods 21 is perpendicular to the distribution direction of the two mounting rings 11. One fireproof blade 22 corresponds to one rotating rod 21. The fireproof blade 22 is horizontally arranged, and the arrangement direction of the fireproof blade 22 is consistent with the axial direction of the rotating rod 21. The fireproof blade 22 is welded to the rotating rod 21. The fireproof blade 22 can rotate synchronously with the rotating rod 21. The plurality of fireproof blades 22 divide the opening of the main body frame 1 into a plurality of exhaust channels. When two adjacent fireproof blades 22 are in contact, the exhaust channel is closed.

[0041] Reference Figure 1 and Figure 2The drive assembly 3 includes a transmission member 31, a drive member 32, a temperature sensor 33 and an alarm 34. An installation area is formed between the two installation rings 11. The transmission member 31 is located in the installation area. In this embodiment, the transmission member 31 includes multiple sprockets 311 and a chain 312. A sprocket 311 corresponds to a rotating rod 21. One end of the transmission rod can pass through the main body frame 1. The sprocket 311 is coaxially welded to the rotating rod 21. Multiple sprockets 311 are all located on the same side of the main body frame 1. The chain 312 is wound around the multiple sprockets 311. In this embodiment, the drive member 32 includes a placement seat 321, a drive motor 322 and a protective cover 323. The placement seat 321 is located in the installation area. The seat 321 is welded to the main body frame 1, and the placement seat 321 is close to one of the rotating rods 21. The casing of the driving motor 322 is fixedly connected to the placement seat 321 by screws. The output shaft of the driving motor 322 is coaxially fixedly connected with one of the sprockets 311 close to it by a key connection. The driving motor 322 drives the sprocket 311 to rotate. At this time, the rotating rod 21 rotates with the sprocket 311; the protective cover 323 is a rectangular cover, the protective cover 323 is vertically arranged, and the setting direction of the protective cover 323 is consistent with the distribution direction of multiple sprockets 311. The protective cover 323 can cover multiple sprockets 311 and the driving motor 322. The protective cover 323 is detachably connected to the main body frame 1 by screws.

[0042] Reference Figure 1 and Figure 2 The temperature sensor 33 is located on the main body frame 1, and the temperature sensor 33 is fixedly connected to the main body frame 1 by screws. The temperature sensor 33 can measure the air flow temperature in the pipeline. The temperature sensor 33 is electrically connected to the drive motor 322. When a fire occurs, the air flow flows along the pipeline to the temperature sensor 33. At this time, the temperature sensor 33 measures that the air flow temperature is higher than the preset value. The temperature sensor 33 transmits a signal to the drive motor 322. The drive motor 322 drives the sprocket 311 to rotate, and the rotating rod 21 rotates synchronously with the sprocket 311. The fireproof blade 22 can close the exhaust channel. The alarm 34 is fixedly connected to the main body frame 1 by screws. The alarm 34 is electrically connected to the temperature sensor 33. When the temperature sensor 33 measures that the air flow temperature is higher than the preset value, the temperature sensor 33 transmits a signal to the alarm 34, and the alarm 34 alarms; when the fire is handled, the temperature sensor 33 measures that the air flow temperature is lower than the preset value. The temperature sensor 33 transmits a signal to the drive motor 322. Similarly, the drive motor 322 drives the fireproof blade 22 to close the exhaust channel.

[0043] Reference Figure 1 , Figure 2 and Figure 3The sliding component 4 is located on the side of the fireproof blade 22 away from the inside of the pipeline. The sliding component 4 includes a sliding part 41, a mounting frame 42, a fireproof plate 43 and a telescopic part 44. The sliding part 41 includes two sliding rods 411. The main body frame 1 is coaxially provided with a first annular groove 12 on the side of the fireproof blade 22 away from the inside of the pipeline, and the first annular groove 12 runs through the top of the main body frame 1. The two sliding rods 411 are both located at the top of the main body frame 1. The two sliding rods 411 are both vertically arranged. The distribution direction of the two sliding rods 411 is perpendicular to the distribution direction of the two mounting rings 11. The sliding rods 411 are welded to the main body frame 1. A sliding gap is left between the two sliding rods 411. A sliding groove 4111 is provided on the side where the two sliding rods 411 are close to each other, and the opening direction of the sliding groove 4111 is consistent with the length direction of the sliding rod 411.

[0044] Reference Figure 3 and Figure 4 The mounting frame 42 is vertically arranged, and the two side walls of the mounting frame 42 facing each other in the vertical direction each extend into a slide groove 4111, and the mounting frame 42 can be located in the first ring groove 12, and the mounting frame 42 is slidably arranged on the sliding rod 411 and the main body frame 1, and the sliding direction of the mounting frame 42 is consistent with the length direction of the sliding rod 411, and the two side walls of the mounting frame 42 facing each other in the vertical direction are each provided with a plurality of balls 421 near the sliding rod 411, and the plurality of balls 421 are spaced apart in the vertical direction, and the plurality of balls 421 are rotatably connected to the mounting frame 42, and the balls 421 can slide in the slide groove 4111 and the first ring groove 12, and when the mounting frame 42 is matched with the first ring groove 12, the mounting frame 4 2 is coaxially arranged with the main body frame 1, the fireproof plate 43 is located in the sliding gap, the fireproof plate 43 includes a flame retardant plate 431 and two fireproof sealing plates 432, the inner side wall of the installation frame 42 is provided with three second annular grooves 422, the second annular grooves 422 penetrate the upper wall of the installation frame 42, and the three second annular grooves 422 are spaced apart along the thickness direction of the installation frame 42, the flame retardant plate 431 is plugged into the second annular groove 422 located in the middle, and the two fireproof sealing plates 432 can be respectively plugged into the remaining two second annular grooves 422. In this embodiment, the fireproof sealing plate 432 and the flame retardant plate 431 are both made of high temperature resistant materials, and the fireproof sealing plate 432 and the flame retardant plate 431 can fit with the second annular groove 422.

[0045] Reference Figure 3 , Figure 4 and Figure 5The telescopic member 44 includes two electric telescopic rods 441, and the distribution direction of the two electric telescopic rods 441 is consistent with the distribution direction of the two sliding rods 411. One end of the electric telescopic rod 441 is hinged to the side of the fireproof blade 22 located at the top of the main body frame 1 away from the inside of the pipeline, and the other end is hinged to the bottom of the installation frame 42. The temperature sensor 33 is electrically connected to the electric telescopic rod 441. When the temperature sensor 33 measures that the airflow temperature is higher than the preset value, the temperature sensor 33 transmits a signal to the electric telescopic rod 441, and the electric telescopic rod 441 pulls the installation frame 42 to slide along the sliding rod 411.

[0046] Reference Figure 5 A flame retardant device for a fire damper of an air conditioning system also includes a hoisting assembly 5, and the hoisting assembly 5 is arranged on the main body frame 1.

[0047] Reference Figure 5 and Figure 6 The hoisting assembly 5 is located between the fireproof blade 22 and the installation frame 42. The hoisting assembly 5 includes a hoisting shaft 51, a hoisting member 52 and a fireproof cloth 53. The hoisting shaft 51 is close to the top of the main body frame 1. The hoisting shaft 51 is horizontally arranged. The arrangement direction of the hoisting shaft 51 is consistent with the axial direction of the rotating rod 21. Both ends of the hoisting shaft 51 are rotatably connected to the main body frame 1. One end of the hoisting shaft 51 passes through the main body frame 1. The hoisting member 52 is a rotating motor. The rotating motor is located in the installation gap. The housing of the rotating motor is fixedly connected to the main body frame 1 by screws. The output shaft of the rotating motor is connected to the hoisting shaft One end of 51 is coaxially fixedly connected through a coupling, the temperature sensor 33 is electrically connected to the rotating motor, the fireproof cloth 53 is wrapped around the outer peripheral wall of the winch shaft 51, one side of the fireproof cloth 53 is fixed to the winch shaft 51 by screws, and the side of the fireproof cloth 53 away from the connection between the fireproof cloth 53 and the winch shaft 51 is fixedly connected to the bottom of the installation frame 42 by screws. When the temperature sensor 33 measures that the airflow temperature is higher than the preset value, the temperature sensor 33 transmits a signal to the rotating motor. At this time, the fireproof cloth 53 moves with the installation frame 42, and the fireproof cloth 53 can prevent flames from spraying out of the main body frame 1.

[0048] The implementation principle of a flame retardant device for a fire damper of an air-conditioning system in an embodiment of the present application is as follows: when a fire occurs, the temperature of the air flow in the pipeline increases. At this time, the driving component 3 can drive the closing component 2 to move, and the closing component 2 can close the exhaust passage in the main body frame 1. At the same time, the telescopic part 44 in the sliding component 4 pulls the mounting frame 42 to move, closing the exhaust passage, and the winch component 5 also moves accordingly, which can play a flame retardant role.

[0049] When the airflow in the pipeline increases and the temperature sensor 33 measures that the airflow temperature is higher than the preset value, the temperature sensor 33 simultaneously transmits a signal to the drive motor 322, the rotating motor and the electric telescopic rod 441. At the same time, the drive motor 322 drives the rotating rod 21 to rotate, so that the fireproof blades 22 can close the exhaust channel. The electric telescopic rod 441 pulls the installation frame 42 to move, and the rotating motor drives the winch shaft 51 to rotate. The fireproof cloth 53 moves with the installation frame 42, which is beneficial to improving the flame retardant performance, and the alarm 34 sounds an alarm.

[0050] When the fireproof sealing member needs to be replaced, the personnel remove the fireproof sealing plate 432 and the flame retardant plate 431 on the installation frame 42 , and then install the replaced fireproof sealing plate 432 and the flame retardant plate 431 on the installation frame 42 .

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fire retardant device for a fire damper of an air conditioning system, characterized in that: The invention comprises a main body frame (1), a closing component (2), a driving component (3) and a sliding component (4), wherein the closing component (2) comprises a plurality of fireproof blades (22), the plurality of fireproof blades (22) are all rotatably connected to the main body frame (1), the plurality of fireproof blades (22) are used to close the opening of the main body frame (1), and the driving component (3) is connected to the plurality of fireproof blades (22) to drive the plurality of fireproof blades (22) to rotate simultaneously; The sliding component (4) is located at the side of the fireproof blade (22) away from the inside of the pipeline. The sliding component (4) comprises a sliding member (41), a mounting frame (42), a fireproof plate (43) and a telescopic member (44). The main body frame (1) is coaxially provided with a first annular groove (12) at the side of the fireproof blade (22) away from the inside of the pipeline. The first annular groove (12) runs through the top of the main body frame (1). The sliding member (41) is fixed to the top of the main body frame (1). The mounting frame (42) is slidably arranged on the sliding member (41). The mounting frame (42) is located in the first annular groove (12). The installation frame (42) slides from the sliding member (41) to one side of the main body frame (1), and the fireproof board (43) is detachably connected to the installation frame (42). The fireproof board (43) is used for flame retardancy. The fireproof board (43) and the installation frame (42) form a fireproof door, and the fireproof door can close the opening of the main body frame (1). The telescopic member (44) is located between the fireproof blade (22) and the installation frame (42), and one end of the telescopic member (44) is hinged to the fireproof blade (22) located at the top of the main body frame (1), and the other end is hinged to the bottom of the installation frame (42).

2. The fire retardant device for air conditioning system fire damper according to claim 1, characterized in that: The inner side wall of the installation frame (42) is provided with three second annular grooves (422), the second annular grooves (422) penetrate the upper wall surface of the installation frame (42), and the three second annular grooves (422) are distributed at intervals along the thickness direction of the installation frame (42); The fireproof plate (43) comprises a flame retardant plate (431) and two fireproof sealing plates (432); the flame retardant plate (431) is plugged into the second annular groove (422) located in the middle, and the two fireproof sealing plates (432) are respectively plugged into the other two second annular grooves (422); the flame retardant plate (431) and the fireproof sealing plates (432) are both fitted into the second annular grooves (422).

3. The fire retardant device for air conditioning system fire damper according to claim 2, characterized in that: The invention also comprises a hoisting assembly (5), wherein the hoisting assembly (5) is located between the fireproof blade (22) and the installation frame (42), and the hoisting assembly (5) comprises a hoisting shaft (51), a hoisting member (52) and a fireproof cloth (53). The hoisting shaft (51) is horizontally rotatably connected to the main body frame (1), the hoisting shaft (51) is close to the top of the main body frame (1), the hoisting shaft (51) is arranged parallel to the fireproof blade (22), the hoisting member (52) is connected to the hoisting shaft (51) to drive the hoisting shaft (51) to rotate, the fireproof cloth (53) is wound around the outer peripheral wall of the hoisting shaft (51), one side of the fireproof cloth (53) is fixed to the hoisting shaft (51), and the fireproof cloth (53) is fixed to the bottom of the installation frame (42) away from the connection between the fireproof cloth (53) and the hoisting shaft (51).

4. The fire retardant device for fire dampers of air conditioning systems according to claim 3, characterized in that: The closing component (2) further comprises a plurality of rotating rods (21), wherein the plurality of rotating rods (21) are all rotatably connected to the main body frame (1), the setting direction of the rotating rods (21) is consistent with the setting direction of the fireproof blades (22), and one of the fireproof blades (22) is fixed to one of the rotating rods (21); The driving assembly (3) comprises a transmission member (31) and a driving member (32); the transmission member (31) comprises a plurality of sprockets (311) and a chain (312); one of the sprockets (311) corresponds to one of the rotating rods (21); the sprocket (311) is coaxially fixed to the rotating rod (21); the plurality of sprockets (311) are located on the same side of the main body frame (1); the chain (312) is wound around the plurality of sprockets (311); and the driving member (32) is connected to one of the sprockets (311) to drive the sprocket (311) to rotate.

5. The fire retardant device for fire dampers of air conditioning systems according to claim 4, characterized in that: The driving component (3) also includes a temperature sensor (33), the temperature sensor (33) is located on the side of the fireproof blade (22) close to the inside of the pipeline, the temperature sensor (33) is fixed in the main body frame (1), the temperature sensor (33) is used to measure the air flow temperature in the pipeline, and the temperature sensor (33) is electrically connected to the driving member (32), the hoisting member (52) and the telescopic member (44).

6. The fire retardant device for fire dampers of air conditioning systems according to claim 5, characterized in that: The driving component (3) further comprises an alarm (34), wherein the alarm (34) is fixed to the main body frame (1), and the temperature sensor (33) is electrically connected to the alarm (34).

7. The fire retardant device for fire dampers of air conditioning systems according to claim 1, characterized in that: A plurality of balls (421) are provided on the side away from each other of the two side walls of the installation frame (42) facing each other in the vertical direction. The plurality of balls (421) are spaced apart in the vertical direction. The plurality of balls (421) are rotatably connected to the installation frame (42). The plurality of balls (421) can slide in the first annular groove (12).

8. A fire retardant device for a fire damper of an air conditioning system according to any one of claims 1 to 7, characterized in that: At least one mounting ring (11) is provided on the main body frame (1), and the mounting ring (11) is fixed to the main body frame (1).

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