Smoke exhaust fireproof valve

Abstract

The utility model discloses a smoke exhaust fireproof valve, which belongs to the technical field of fire fighting equipment, aims at solving the problems that the smoke exhaust filtering effect is poor and the maintenance is inconvenient, and comprises an air pipeline, an air inlet pipe and an air outlet pipe are respectively fixed at two ends of the air pipeline through connecting flanges, and a smoke detector is fixed at the top end of the air inlet pipe. The top end of the ventilation pipeline communicates with a filter pipe, and the top end of the filter pipe communicates with an exhaust pipe. The smoke alarm is used for monitoring smoke when a fire occurs, the servo motor and the driving motor can be controlled to rotate at the same time, the sealing plate seals and partitions the air outlet pipe, meanwhile, the turbine fan blades are driven to rotate to exhaust the smoke, the smoke exhaust and fire prevention effects are good, the smoke is filtered and purified through the filter plate, and the smoke exhaust effect is good. The pollution to air when the smoke is exhausted can be reduced, and the fire scene environment and the personnel health safety are effectively protected.

Description

Technical Field

[0001] The utility model belongs to the technical field of fire-fighting equipment, and particularly relates to a smoke exhaust fire damper. Background Technique

[0002] As an indispensable part of building construction, the fire-fighting system can play a role in delaying the spread of fire and prolonging people's survival time in the fire scene when a fire hazard occurs in the building. Among them, the smoke exhaust fire damper, as one of the important components of the smoke exhaust passage, plays an extremely important role in delaying the spread of fire and protecting the safety of people's lives.

[0003] The smoke exhaust fire damper is in an open state during normal working conditions, and the flue at both ends of the valve is in circulation. When a fire hazard occurs, it will cut off the pipeline to prevent the spread of smoke and discharge the smoke. The common smoke exhaust fire damper generally discharges the smoke directly outdoors when in use. The direct discharge of thick smoke outdoors will directly affect the air quality in the fire area and pollute the environment. Some smoke exhaust fire dampers are provided with filter plates inside to filter the thick smoke. However, after use, there is a lot of dust inside, which is easy to block, resulting in difficult smoke exhaust, potential safety hazards, and inconvenient disassembly, repair and maintenance.

[0004] Therefore, a smoke exhaust fire damper is needed to solve the problems of poor smoke exhaust filtering effect and inconvenient maintenance. Content of the Utility Model

[0005] The purpose of the utility model is to provide a smoke exhaust fire damper to solve the problems raised in the above background technique.

[0006] To achieve the above object, the present utility model provides the following technical solution: A smoke exhaust fire damper, including a ventilation duct, both ends of the ventilation duct are respectively fixed with an intake pipe and an exhaust pipe through connecting flanges, a smoke detector is fixed at the top end of the intake pipe, the top end of the ventilation duct is communicated with a filter pipe, the top end of the filter pipe is communicated with an exhaust pipe, a rotating frame is fixed on the inner side wall of the exhaust pipe, a turbine fan blade is rotatably connected to the bottom end of the rotating frame, a driving motor is fixed at the top end of the rotating frame, the driving motor is coaxially connected with the turbine fan blade, the smoke detector is electrically connected with the driving motor, a plurality of symmetrically arranged slots are formed in one side wall of the filter pipe, a filter plate is slidably inserted into the inside of the slot, a handle is fixed at one end of the filter plate, a limiting component is arranged between the filter pipe and the filter plate, a lifting groove is formed in the top end of the ventilation duct, a sealing plate is slidably connected between the two side walls of the lifting groove, a threaded sleeve is fixed on one side wall of the sealing plate, a servo motor is fixed at the top end of the ventilation duct, an output shaft of the servo motor is fixed with a lead screw through a coupling, the lead screw penetrates through the ventilation duct and is rotatably connected with the inner wall of the bottom end of the ventilation duct, the threaded sleeve is sleeved on the outer surface of the lead screw, and the lead screw and the threaded sleeve are in threaded transmission, and the smoke detector is electrically connected with the servo motor.

[0007] It should be noted in the solution that the limiting component includes two limiting grooves respectively formed on both sides of the filter plate, limiting rods respectively penetrate through the two side walls of the slot and are respectively clamped with the corresponding limiting grooves, a plurality of limiting rods on the same side are jointly fixed with a connecting plate, a spring is sleeved on the outer side wall of the limiting rod, and two ends of the spring are respectively fixed with the outer side wall of the filter pipe and one side wall of the connecting plate, an installation box is fixed at the top end of the filter pipe, a rotating shaft is rotatably connected to the top end of the installation box, a gear is sleeved on the outer side wall of the rotating shaft, a knob is fixed at the top end of the rotating shaft, toothed plates respectively penetrate through the two side walls of the installation box, and the two toothed plates are matched with the gear, and one ends of the two toothed plates are respectively fixed with the two connecting plates.

[0008] It is further worth noting that the two toothed plates are respectively located on both sides of the gear, and the mutually close side walls of the two toothed plates are respectively meshed with the gear.

[0009] It is even further necessary to note that one end of the limiting rod is arranged in an inclined plane, the limiting rod is perpendicular to the connecting plate, and the plurality of filter plates are equidistantly distributed up and down.

[0010] As a preferred implementation manner, a plurality of annularly distributed support rods are fixed at the top end of the exhaust pipe, and a protective cover is jointly fixed at the top ends of the plurality of support rods.

[0011] As a preferred embodiment, the diameters of the air inlet pipe and the air outlet pipe are both smaller than the diameter of the ventilation duct. The sealing plate is located at one end of the air outlet pipe, and the vertical cross-section of the sealing plate is larger than the vertical cross-section of the air outlet pipe.

[0012] Compared with the prior art, a smoke exhaust and fire prevention valve provided by the present utility model has at least the following beneficial effects:

[0013] (1) By monitoring the smoke during a fire through a smoke detector, the servo motor and the drive motor can be controlled to rotate simultaneously, so that the sealing plate seals and cuts off the air outlet pipe, and at the same time drives the turbine fan blade to rotate to discharge the smoke. It has a good smoke exhaust and fire prevention effect. The smoke is filtered and purified by a filter plate, which can reduce the pollution of the air when the smoke is discharged, and effectively protects the environment and the health and safety of personnel at the fire scene.

[0014] (2) By rotating the knob, the limiting states between a plurality of limiting rods and the filter plate can be controlled simultaneously, which is convenient for the disassembly of the filter plate during daily maintenance and post-disaster overhaul. It is more convenient to use. By inserting the filter plate into the corresponding slot, the limiting rod and the limiting groove can be automatically clamped to form a fixation, and the installation is more convenient. By providing a protective cover to shield the top of the exhaust pipe, rainwater and other sundries are prevented from falling into the exhaust pipe, and it has a good protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 is a schematic diagram of the disassembled structure of the ventilation duct of the present utility model;

[0017] Figure 3 is a schematic diagram of the structure of the filter pipe of the present utility model;

[0018] Figure 4 is a schematic diagram of the disassembled structure of the filter pipe of the present utility model;

[0019] Figure 5 is a schematic diagram of the structure of the limiting component of the present utility model.

[0020] In the figure: 1, ventilation duct; 2, air inlet pipe; 3, air outlet pipe; 4, smoke detector; 5, filter pipe; 6, exhaust pipe; 7, rotating frame; 8, turbine fan blade; 9, drive motor; 10, slot; 11, filter plate; 12, handle; 13, limiting component; 131, limiting groove; 132, limiting rod; 133, connecting plate; 134, spring; 135, installation box; 136, rotating shaft; 137, gear; 138, knob; 139, toothed plate; 14, lifting groove; 15, sealing plate; 16, threaded sleeve; 17, servo motor; 18, lead screw; 19, support rod; 20, protective cover. Detailed implementation manners

[0021] The following further describes the present utility model in conjunction with embodiments.

[0022] Please refer to Figures 1-5 , the present utility model provides a smoke exhaust and fire prevention valve, which includes a ventilation duct 1. The two ends of the ventilation duct 1 are respectively fixed with an intake pipe 2 and an exhaust pipe 3 through connecting flanges. The top end of the intake pipe 2 is fixed with a smoke detector 4. The top end of the ventilation duct 1 is communicated with a filter pipe 5. The top end of the filter pipe 5 is communicated with an exhaust pipe 6. A rotating frame 7 is fixed on the inner side wall of the exhaust pipe 6. The bottom end of the rotating frame 7 is rotatably connected with a turbine fan blade 8. The top end of the rotating frame 7 is fixed with a driving motor 9. The driving motor 9 is coaxially connected with the turbine fan blade 8. The smoke detector 4 is electrically connected to the driving motor 9. A plurality of symmetrically arranged slots 10 are formed in one side wall of the filter pipe 5. A filter plate 11 is slidably inserted into the inside of the slot 10. One end of the filter plate 11 is fixed with a handle 12. A limiting component 13 is arranged between the filter pipe 5 and the filter plate 11. A lifting groove 14 is formed in the top end of the ventilation duct 1. A sealing plate 15 is slidably connected between the two side walls of the lifting groove 14. A threaded sleeve 16 is fixed on one side wall of the sealing plate 15. A servo motor 17 is fixed on the top end of the ventilation duct 1. The output shaft of the servo motor 17 is fixed with a lead screw 18 through a coupling. The lead screw 18 penetrates through the ventilation duct 1 and is rotatably connected with the inner wall of the bottom end of the ventilation duct 1. The threaded sleeve 16 is sleeved on the outer surface of the lead screw 18. The lead screw 18 and the threaded sleeve 16 are in threaded transmission. The smoke detector 4 is electrically connected to the servo motor 17. By monitoring the smoke during a fire through the smoke alarm, the servo motor 17 and the driving motor 9 can be controlled to rotate simultaneously, so that the sealing plate 15 seals and cuts off the exhaust pipe 3, and at the same time drives the turbine fan blade 8 to rotate to discharge the smoke, having a good smoke exhaust and fire prevention effect. The smoke is filtered and purified by the filter plate 11, which can reduce the pollution of the air when the smoke is discharged, and effectively protects the fire site environment and the health and safety of personnel.

[0023] Further, it is specifically worth noting that the limiting component 13 includes two limiting grooves 131 respectively formed on both sides of the filter plate 11. The two side walls of the slot 10 are respectively slidably penetrated by limiting rods 132. The limiting rods 132 are respectively clamped with the corresponding limiting grooves 131. A plurality of limiting rods 132 on the same side are jointly fixed with a connecting plate 133. A spring 134 is sleeved on the outer side wall of the limiting rod 132. The two ends of the spring 134 are respectively fixed with the outer side wall of the filter tube 5 and one side wall of the connecting plate 133. The top end of the filter tube 5 is fixed with a mounting box 135. A rotating shaft 136 is rotatably connected to the top end of the mounting box 135. A gear 137 is sleeved on the outer side wall of the rotating shaft 136. A knob 138 is fixed to the top end of the rotating shaft 136. Tooth-shaped plates 139 are respectively slidably penetrated through the two side walls of the mounting box 135. The two tooth-shaped plates 139 cooperate with the gear 137. One ends of the two tooth-shaped plates 139 are respectively fixed with the two connecting plates 133. By rotating the knob 138, the limiting states between the plurality of limiting rods 132 and the filter plate 11 can be controlled simultaneously, which is convenient for the disassembly of the filter plate 11 during daily maintenance and post-disaster repair, and is relatively convenient to use. By inserting the filter plate 11 into the corresponding slot 10, the limiting rods 132 can be automatically clamped with the limiting grooves 131 to form a fixation, and the installation is relatively convenient.

[0024] Further, it is specifically worth noting that the two tooth-shaped plates 139 are respectively located on both sides of the gear 137, and the side walls of the two tooth-shaped plates 139 close to each other are meshed with the gear 137.

[0025] This solution has the following working process: when the smoke exhaust fire damper is in use, the smoke detector 4 monitors the smoke and is equipped with a single chip microcomputer for controlling the drive motor 9 and the servo motor 17. When the fire spreads, the smoke detector 4 detects the smoke and first controls the servo motor 17 to drive the screw rod 18 to rotate. When the screw rod 18 rotates, it is threaded with the threaded sleeve 16, and then drives the sealing plate 15 to descend and completely fall into the lifting groove 14 to seal the outlet pipe 3 to prevent the smoke from spreading. Then, the drive motor 9 is controlled to drive the turbine fan blades 8 to rotate to extract the smoke in the ventilation duct 1. The smoke passes through multiple filter plates 11 for filtering to reduce the smoke dust in the smoke. The filter plate 11 can be dismantled and cleaned during daily use of the smoke exhaust fire damper to ensure that the filter plate 1 1 Normal ventilation effect, when removing the filter plate 11, turn the knob 138 to drive the gear 137 to rotate. When the gear 137 rotates, it meshes with the two toothed plates 139, and then drives the two toothed plates 139 to push the connecting plate 133 to both sides. When the connecting plate 133 moves, it drives the limiting rod 132 to disengage from the limiting groove 131, and releases the limit of the filter plate 11. Then the filter plate 11 can be drawn out for cleaning and maintenance. After cleaning, the filter plate 11 is directly inserted into the corresponding slot 10. The end of the filter plate 11 squeezes the inclined surface of the end of the limiting rod 132, so that the limiting rod 132 automatically shrinks. When the filter plate 11 is completely inserted into the slot 10, the limiting rod 132 is reset by the spring 134 and plugged into the limiting groove 131 to complete the installation limit of the filter plate 11.

[0026] According to the above working process, it can be known that by monitoring the smoke during a fire through the smoke alarm, the servo motor 17 and the drive motor 9 can be controlled to rotate at the same time, so that the sealing plate 15 seals and isolates the exhaust pipe 3, and at the same time drives the turbine fan blades 8 to rotate to discharge the smoke, which has a good smoke exhaust and fire prevention effect. The smoke is filtered and purified by the filter plate 11, which can reduce the pollution of the air when the smoke is discharged, and effectively protect the fire scene environment and the health and safety of personnel.

[0027] It is further worthwhile to explain in detail that one end of the limiting rod 132 is arranged in an inclined surface, the limiting rod 132 and the connecting plate 133 are arranged vertically, and the plurality of filter plates 11 are distributed equidistantly up and down.

[0028] Further as Figure 4 As shown, it is worth explaining in detail that a plurality of support rods 19 distributed in a ring shape are fixed to the top of the exhaust pipe 6, and a protective cover 20 is commonly fixed to the top of the plurality of support rods 19. By setting the protective cover 20, the top of the exhaust pipe 6 is shielded to prevent rainwater and other debris from falling into the exhaust pipe 6, thereby having a better protective effect.

[0029] It is further worth explaining that the diameters of the air inlet pipe 2 and the air outlet pipe 3 are both smaller than the diameter of the ventilation duct 1 , the sealing plate 15 is located at one end of the air outlet pipe, and the vertical section of the sealing plate 15 is larger than the vertical section of the air outlet pipe 3 .

[0030] In summary, by rotating the knob 138, the limiting states between multiple limiting rods 132 and the filter plate 11 can be controlled simultaneously, which facilitates the disassembly of the filter plate 11 during daily maintenance and post-disaster inspection, and is relatively convenient to use. By inserting the filter plate 11 into the corresponding slot 10, the limiting rod 132 and the limiting groove 131 can be automatically clamped to form a fixation, and the installation is relatively convenient. By providing the protective cover 20 to shield the top of the exhaust pipe 6, rainwater and other sundries are prevented from falling into the exhaust pipe 6, and it has a good protective effect.

[0031] The drive motor 9, the servo motor 17 and the smoke detector 4 can be purchased on the market. The drive motor 9, the servo motor 17 and the smoke detector 4 are equipped with power supplies, which are mature technologies in this field and have been fully disclosed, so they will not be repeated in the specification.

Claims

1. A smoke exhaust fire damper, comprising a ventilation duct (1), characterized in that: An air inlet pipe (2) and an air outlet pipe (3) are fixed to the two ends of the ventilation duct (1) through connecting flanges, a smoke detector (4) is fixed to the top of the air inlet pipe (2), a filter pipe (5) is connected to the top of the ventilation duct (1), an exhaust pipe (6) is connected to the top of the filter pipe (5), a rotating frame (7) is fixed to the inner side wall of the exhaust pipe (6), a turbine blade (8) is rotatably connected to the bottom end of the rotating frame (7), a driving motor (9) is fixed to the top of the rotating frame (7), the driving motor (9) is coaxially connected to the turbine blade (8), the smoke detector (4) is electrically connected to the driving motor (9), a plurality of symmetrically arranged slots (10) are provided on one side wall of the filter pipe (5), a filter plate (11) is slidably inserted into the interior of the slot (10), one end of the filter plate (11) is fixed A handle (12) is fixedly provided, a limit assembly (13) is arranged between the filter tube (5) and the filter plate (11), a lifting groove (14) is provided at the top of the ventilation duct (1), a sealing plate (15) is slidably connected between the side walls of the lifting groove (14), a threaded sleeve (16) is fixed to one side wall of the sealing plate (15), a servo motor (17) is fixed to the top of the ventilation duct (1), a screw rod (18) is fixed to the output shaft of the servo motor (17) through a coupling, the screw rod (18) passes through the ventilation duct (1) and is rotatably connected to the inner wall of the bottom end of the ventilation duct (1), the threaded sleeve (16) is sleeved on the outer surface of the screw rod (18), the screw rod (18) and the threaded sleeve (16) are threadedly driven, and the smoke detector (4) is electrically connected to the servo motor (17).

2. A smoke exhaust fire damper according to claim 1, characterized in that: The limiting assembly (13) comprises two limiting grooves (131) respectively arranged on both sides of the filter plate (11); the side walls of the slot (10) are respectively slidably penetrated by limiting rods (132); the limiting rods (132) and the corresponding limiting grooves (131) are mutually clamped; a plurality of limiting rods (132) located on the same side are commonly fixed with a connecting plate (133); the outer side walls of the limiting rods (132) are sleeved with a spring (134); the two ends of the spring (134) are respectively connected to the outer side walls of the filter tube (5) and the connecting plate (133). One side wall is fixed, a mounting box (135) is fixed at the top of the filter tube (5), a rotating shaft (136) is rotatably connected to the top of the mounting box (135), a gear (137) is sleeved on the outer side wall of the rotating shaft (136), a knob (138) is fixed at the top of the rotating shaft (136), toothed plates (139) are slidably penetrated through the side walls of both sides of the mounting box (135), two toothed plates (139) are matched with the gear (137), and one end of the two toothed plates (139) is fixed to the two connecting plates (133) respectively.

3. A smoke exhaust fire damper according to claim 2, characterized in that: The two toothed plates (139) are respectively located on both sides of the gear (137), and the side walls of the two toothed plates (139) that are close to each other are meshed with the gear (137).

4. A smoke exhaust fire damper according to claim 3, characterized in that: One end of the limiting rod (132) is arranged in an inclined surface, the limiting rod (132) and the connecting plate (133) are arranged vertically, and the plurality of filter plates (11) are distributed equidistantly up and down.

5. The smoke exhaust fire damper according to claim 4, characterized in that: A plurality of support rods (19) distributed in a ring shape are fixed to the top end of the exhaust pipe (6), and a protective cover (20) is commonly fixed to the top ends of the plurality of support rods (19).

6. The smoke exhaust fire damper according to claim 5, characterized in that: The diameters of the air inlet pipe (2) and the air outlet pipe (3) are both smaller than the diameter of the ventilation duct (1); the sealing plate (15) is located at one end of the air outlet pipe; and the vertical section of the sealing plate (15) is larger than the vertical section of the air outlet pipe (3).

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