CN219243789U

CN219243789U - Smoke prevention and exhaust device for indoor fire control

Info

Publication number: CN219243789U
Application number: CN202222375668.7U
Authority: CN
Inventors: 曲正; 张生海; 孙增帅; 孙晗; 乔健; 王英见
Original assignee: China Railway Construction Bridge Engineering Bureau Electrification Engineering Co Ltd
Current assignee: China Railway Construction Bridge Engineering Bureau Electrification Engineering Co Ltd
Priority date: 2022-09-07
Filing date: 2022-09-07
Publication date: 2023-06-23
Anticipated expiration: 2032-09-07

Abstract

The utility model relates to the technical field of smoke prevention and exhaust systems, and particularly discloses an indoor smoke prevention and exhaust device for fire control, which comprises a smoke exhaust pipeline and a smoke prevention pipeline, wherein the smoke exhaust pipeline is connected with a smoke exhaust machine through a pipeline, and the smoke prevention pipeline is connected with a blower through a pipeline; the smoke extractor comprises an exhaust pipe and a connecting pipe connected with the pipeline, the air inlet end of the exhaust pipe is connected with a filter pipe A, and one end of the filter pipe A, which is far away from the exhaust pipe, is connected with the connecting pipe through a filter pipe B; according to the utility model, the cleaning rod rotates to clean impurities accumulated on the air inlet side of the filter screen, so that inconvenience in ventilation caused by accumulation of the impurities is reduced, the arc-shaped box in the air inlet side of the filter pipe B is arranged, the impurities cleaned by the cleaning rod can be collected, the impurities are reduced to fly away and contact the filter screen, and the filter pipe B is convenient to detach to clean the filter screen and the impurities.

Description

Smoke prevention and exhaust device for indoor fire control

Technical Field

The utility model relates to the technical field of smoke prevention and exhaust systems, in particular to an indoor smoke prevention and exhaust device for fire control.

Background

The smoke prevention and exhaust system is a generic term for smoke prevention and exhaust systems. The smoke prevention and exhaust system is configured in the intelligent fire protection system. The smoke preventing and exhausting system consists of air feeding and exhausting pipeline, pipe well, fireproof valve, door opening and closing equipment, air feeding and exhausting fan, etc. The exhaust fan can be provided with a corresponding filter screen because smoke is required to be exhausted, but in long-term use, impurities in the smoke are adhered to the filter screen to affect use.

In the prior art, in the smoke prevention and exhaust device disclosed in the patent publication No. CN213527881U, a driving motor is installed in a shell through an installation component, an output shaft of the driving motor is fixedly connected with fan blades, a connecting rod is coaxially arranged with the output shaft of the driving motor, an L-shaped rod is fixed on the side face of the connecting rod, and a fixing frame is driven by the L-shaped rod to do circular motion by taking the connecting rod as the center, so that particles attached to a filter screen are promoted to fall, and the blocking of the particles is prevented.

The device can clean the filter screen, but the particulate matters in the cleaning process are placed in the pipeline, and in flowing smoke, the smoke can drive dust to float and contact the filter screen newly, so that the cleaning effect is affected. Aiming at the problems, an indoor smoke prevention and exhaust device for fire control is provided.

Disclosure of Invention

The utility model aims to provide an indoor fire-fighting smoke prevention and exhaust device, which aims to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the smoke prevention and exhaust device for indoor fire control comprises a smoke exhaust pipeline and a smoke prevention pipeline, wherein the smoke exhaust pipeline is connected with a smoke exhaust machine through a pipeline, and the smoke prevention pipeline is connected with a blower through a pipeline;

the smoke extractor comprises an exhaust pipe and a connecting pipe connected with a pipeline, the air inlet end of the exhaust pipe is connected with a filter pipe A, and one end, far away from the exhaust pipe, of the filter pipe A is connected with the connecting pipe through a filter pipe B;

the filter comprises a filter pipe A, a filter layer is arranged in the filter pipe B, a filter screen is arranged in the filter pipe B, a cleaning rod is arranged on the air inlet side of the filter screen, a driving piece for driving the cleaning rod to bypass the axis of the filter screen is arranged on the air inlet side away from the filter screen, an arc-shaped box connected to the filter pipe B is arranged on one side of the filter screen, an arc-shaped groove communicated with the inner cavity of the filter pipe B is arranged in the arc-shaped box, and an inclined plate is arranged on the arc-shaped groove at the bottom of the filter pipe B.

In one alternative: the air feeder also comprises an exhaust pipe and a connecting pipe, the connecting pipe is connected with the pipeline, the air outlet end of the exhaust pipe in the air feeder is connected with the connecting pipe, and the air inlet end of the exhaust pipe is connected with the filter pipe B through the filter pipe A.

In one alternative: the driving piece comprises a bracket and a motor arranged on the bracket, wherein an output shaft is connected to a motor shaft of a power output end of the motor, and the output shaft penetrates through a central hole of the filter screen to be connected with one end of the cleaning rod.

In one alternative: the brush hair that contacts with the filter screen is connected with to the cleaning rod one side that is close to the filter screen, swash plate bottom is to being close to filter screen one side slope.

In one alternative: an air exhaust fan is arranged in the air exhaust pipe, and a net cover is arranged at the air outlet end of the air exhaust pipe.

In one alternative: the space where the smoke prevention pipeline is located is provided with a differential pressure controller, smoke sensors and temperature sensors are arranged at the smoke exhaust pipeline and the air opening at the bottom of the smoke prevention pipeline, signal ends of the differential pressure controller, the smoke sensors and the temperature sensors are electrically connected with a fire control terminal through a controller, and the smoke exhaust machine and a blower control end are electrically connected with the fire control terminal through the controller.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the cleaning rod is driven by the driving part to rotate, so that impurities accumulated on the air inlet side of the filter screen can be cleaned, inconvenience in ventilation caused by accumulation of the impurities is reduced, the arc-shaped box in the air inlet side of the filter pipe B can collect the impurities cleaned by the cleaning rod, the impurities are reduced to float and contact the filter screen, and the filter pipe B is convenient to detach for cleaning the filter screen and the impurities;

according to the utility model, the filter pipe A is additionally provided, and a corresponding filter layer can be arranged in the filter pipe A to carry out secondary filtration on the smoke after primary filtration or the air pumped in from the outside, so that the pollution to the external environment is reduced, or the cleanliness of the introduced air is improved.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic structural view of a smoke exhaust duct according to the present utility model.

FIG. 3 is a schematic view of the structure of the inside of the exhaust tube according to the present utility model.

FIG. 4 is a schematic view showing the structure of the inside of a filter tube B according to the present utility model.

Fig. 5 is a schematic diagram of the front view of fig. 4 in the present utility model.

FIG. 6 is a schematic view showing the structure of the inside of a filter tube A according to the present utility model.

In the figure: 11. a smoke exhauster; 12. a blower; 13. a smoke exhaust duct; 14. a smoke protection duct; 15. an exhaust pipe; 16. a filter pipe A; 17. a filter pipe B; 18. a connecting pipe; 19. a mesh enclosure; 20. an air extraction fan; 21. a filter screen; 22. a cleaning rod; 23. an arc-shaped box; 24. a sloping plate; 25. a motor; 26. a bracket; 27. and (5) a filter layer.

Detailed Description

Referring to fig. 1-6, in the present embodiment, an indoor fire-fighting smoke prevention and exhaust apparatus includes a smoke exhaust duct 13, a smoke prevention duct 14, a smoke exhaust fan 11 and a blower 12; in the application, the smoke exhaust pipeline 13 and the smoke prevention pipeline 14 are not only pipelines, but also smoke exhaust systems and smoke prevention systems in a building in the existing smoke prevention and exhaust systems; the smoke extractor 11 and the blower 12 can be arranged on the roof or other positions according to the installation requirement;

the smoke exhaust pipeline 13 is usually arranged in a room or a walk, the smoke prevention pipeline 14 is usually arranged in a front room or a stairway (corresponding smoke prevention pipelines are also arranged in the refuge layer and the refuge walk), when a certain position of a building catches fire, smoke can be discharged out of the room through the smoke exhaust pipeline 13, ventilation (or positive pressure maintenance) is carried out through the smoke prevention pipeline 14, and the smoke in the room is ensured not to enter into evacuation channels such as the front room or the stairway; after the building fire occurs, the smoke is effectively controlled to ensure the safe evacuation of personnel and the rapid extinguishing of firefighters;

the smoke exhaust machine 11 comprises an exhaust pipe 15 and a connecting pipe 18, the connecting pipe 18 is connected with the smoke exhaust pipeline 13 through a pipeline, the connecting pipe 18 can be a straight pipe or a bent pipe, the air inlet end of the exhaust pipe 15 is connected with a filter pipe A16, and one end, far away from the exhaust pipe 15, of the filter pipe A16 is connected with the connecting pipe 18 through a filter pipe B17; the exhaust pipe 15, the filter pipe A16, the filter pipe B17 and the connecting pipe 18 can be connected in a disassembling way through bolts;

the filter tube A16 is internally provided with a filter layer 27, the filter layer 27 can be selected according to actual demands and can be an activated carbon net, the activated carbon net is fixed in the filter tube A16 through bolts, the filter tube B17 is internally provided with a filter screen 21, the air inlet side of the filter screen 21 is provided with a cleaning rod 22, the air inlet side of the filter screen 21 is far away from the air inlet side and is provided with a driving piece for driving the cleaning rod 22 to bypass the axis of the filter screen 21 to rotate, the driving piece drives the cleaning rod 22 to clean the air inlet side of the filter screen 21, one side of the filter screen 21 close to the cleaning rod 22 is provided with an arc box 23 connected to the filter tube B17, an arc groove communicated with the inner cavity of the filter tube B17 is arranged in the arc box 23, cleaned impurities can enter the arc groove to be collected, and the bottom of the filter tube B17 is provided with an inclined plate 24 on the arc groove; the inclined plate 24 can assist impurities to enter the arc-shaped groove, and meanwhile, the phenomenon that the impurities in the arc-shaped groove are lifted by flowing wind is reduced;

in this embodiment, when smoke is required from an indoor fire, the smoke extractor 11 works, the smoke enters the connecting pipe 18 through the smoke exhaust pipe 13, is filtered by the smoke exhaust pipe 15 through the filter pipe B17 and the filter pipe a16, is pumped out, the cleaning rod 22 is driven by the driving part to rotate, the air inlet side of the filter screen 21 can be cleaned, the cleaned impurities can enter the arc-shaped groove to be collected, the inclined plate 24 can assist the impurities to enter the arc-shaped groove, the follow-up detachable smoke exhaust pipe 15, the filter pipe a16 and the filter pipe B17 can clean, the external air is pumped in through the blower 12, and is sent out from the smoke prevention pipe 14, and ventilation or positive pressure maintenance are carried out on evacuation channels such as a front room or a stairwell.

In one embodiment, as shown in fig. 1, the blower 12 also includes an air suction pipe 15 and a connecting pipe 18, the connecting pipe 18 is connected with the blower 12 through a pipeline, an air outlet end of the air suction pipe 15 in the blower 12 is connected with the connecting pipe 18, and an air inlet end of the air suction pipe 15 is connected with a filter pipe B17 through a filter pipe a 16; the air suction pipe 15 pumps air, and the air outside is filtered by the filter pipe B17 and the filter pipe A16 and then is introduced into the smoke-proof pipe 14 through the connecting pipe 18 and the pipeline.

In one embodiment, as shown in fig. 5, the driving member includes a bracket 26 and a motor 25 mounted on the bracket 26, the bracket 26 can be fixed in the filter tube B17 by a bolt, a motor shaft at a power output end of the motor 25 is connected with an output shaft, and the output shaft passes through a central hole of the filter screen 21 to be connected with one end of the cleaning rod 22; the motor 25 is operative to drive rotation of the output shaft and thus the sweeper rod 22.

In one embodiment, the cleaning rod 22 is connected with bristles contacting with the filter 21 near the filter 21, as shown in fig. 4 and 5, the bottom end of the inclined plate 24 is inclined towards the side near the filter 21, and the inclined plate 24 can assist impurities to enter the arc-shaped groove, and meanwhile, the impurities in the arc-shaped groove are reduced from being lifted by flowing wind.

In one embodiment, as shown in fig. 3, an air extraction fan 20 is installed in the air extraction pipe 15, and a mesh enclosure 19 is installed at the air outlet end of the air extraction pipe 15; the net cover 19 can be fixed on the exhaust pipe 15 through bolts, and the exhaust fan 20 can be operated to perform exhaust work.

In one embodiment, the space where the smoke preventing pipe 14 is located is provided with a differential pressure controller, the existing differential pressure controller is selected, when a fire door is opened, the differential pressure between the inside and the outside of the door is rapidly reduced, the differential pressure controller detects the change and can timely feed back the change, the detected abnormal situation is converted into data information, the residual pressure values are sent to the differential pressure controller through the differential pressure sensors at all positions, and the differential pressure controller can be linked with the smoke preventing and discharging system to enter a working state after receiving a pressure release signal, so that the smoke is prevented from diffusing; after the fireproof door is closed, the pressure is increased, the smoke prevention pipeline 14 can reduce the air supply quantity, and the pressure difference is ensured to be maintained at 30Pa (the standard requires the room pressure value to be 25PA-30PA before use); smoke sensor and temperature sensor are all installed to smoke exhaust pipe 13 and smoke prevention pipe 14 bottom wind gap, differential pressure controller, smoke sensor and temperature sensor signal end all pass through controller electric connection fire control terminal, smoke exhauster 11 and forced draught blower 12 control end all pass through controller electric connection fire control terminal.

The working principle of the utility model is as follows: after a building fire disaster occurs, the smoke extractor 11 works, smoke enters the connecting pipe 18 through the smoke exhaust pipeline 13, is filtered by the filtering pipe B17 and the filtering pipe A16 and is pumped out by the exhaust pipe 15, the discharged smoke is filtered by the filtering net 21 and the filtering layer 27, the motor 25 works to drive the output shaft to rotate so as to drive the cleaning rod 22 to rotate, the cleaning rod 22 rotates to clean the air inlet side of the filtering net 21, cleaned impurities can enter the arc-shaped groove to be collected, the inclined plate 24 can assist the impurities to enter the arc-shaped groove, meanwhile, the impurities in the arc-shaped groove are reduced to be raised by flowing wind, when the fire door is opened, the pressure difference between the inside and outside of the door is rapidly reduced, the blower 12 can work to guide outside air into the smoke prevention pipeline 14, ventilation is carried out or positive pressure is maintained through the smoke prevention pipeline 14, the smoke in a room is ensured not to enter a front chamber or an evacuation channel between stairs and the like, and staff can check smoke prevention information in a control center.

Claims

1. An indoor fire-fighting smoke prevention and exhaust device comprises a smoke exhaust pipeline (13) and a smoke prevention pipeline (14), wherein the smoke exhaust pipeline (13) is connected with a smoke exhaust machine (11) through a pipeline, and the smoke prevention pipeline (14) is connected with a blower (12) through a pipeline;

the method is characterized in that: the smoke extractor (11) comprises an exhaust pipe (15) and a connecting pipe (18) connected with a pipeline, wherein the air inlet end of the exhaust pipe (15) is connected with a filter pipe A (16), and one end, far away from the exhaust pipe (15), of the filter pipe A (16) is connected with the connecting pipe (18) through a filter pipe B (17);

install filter layer (27) in filter tube A (16), install filter screen (21) in filter tube B (17), filter screen (21) air inlet side is equipped with cleaning rod (22), filter screen (21) are kept away from air inlet side and are equipped with and are used for driving cleaning rod (22) and bypass filter screen (21) axis pivoted driving piece, filter screen (21) are close to cleaning rod (22) one side and are equipped with arc box (23) of connection on filter tube B (17), be equipped with the arc groove with filter tube B (17) inner chamber intercommunication in arc box (23), filter tube B (17) bottom is located install swash plate (24) on the arc groove.

2. The smoke prevention and exhaust apparatus for indoor fire control according to claim 1, wherein: the air feeder (12) also comprises an air extraction pipe (15) and a connecting pipe (18), the connecting pipe (18) is connected with a pipeline, the air outlet end of the air extraction pipe (15) in the air feeder (12) is connected with the connecting pipe (18), and the air inlet end of the air extraction pipe (15) is connected with a filter pipe B (17) through a filter pipe A (16).

3. The smoke prevention and exhaust apparatus for indoor fire control according to claim 1, wherein: the driving piece comprises a bracket (26) and a motor (25) arranged on the bracket (26), wherein an output shaft is connected to a motor shaft at the power output end of the motor (25), and the output shaft penetrates through a central hole of the filter screen (21) to be connected with one end of the cleaning rod (22).

4. The smoke prevention and exhaust apparatus for indoor fire control according to claim 1, wherein: the brush hair that contacts with filter screen (21) is connected with in the one side that is close to filter screen (21) of cleaning rod (22), swash plate (24) bottom is to being close to filter screen (21) one side slope.

5. The smoke prevention and exhaust apparatus for indoor fire control according to claim 1, wherein: an air exhaust fan (20) is arranged in the air exhaust pipe (15), and a net cover (19) is arranged at the air outlet end of the air exhaust pipe (15).

6. The smoke prevention and exhaust apparatus for indoor fire control according to claim 1, wherein: the space where the smoke prevention pipeline (14) is located is provided with a pressure difference controller, smoke sensors and temperature sensors are arranged at air inlets at the bottoms of the smoke exhaust pipeline (13) and the smoke prevention pipeline (14), signal ends of the pressure difference controller, the smoke sensors and the temperature sensors are electrically connected with a fire control terminal through the controller, and control ends of the smoke exhaust machine (11) and the air blower (12) are electrically connected with the fire control terminal through the controller.