Building fire-fighting smoke exhaust device

Abstract

The utility model discloses a building fire protection smoke exhaust device which comprises a mounting frame, a smoke exhaust pipeline is fixedly connected to the upper surface of the mounting frame, an insertion groove is formed in the smoke exhaust pipeline, a first filter screen is inserted into the insertion groove, and the building fire protection smoke exhaust device further comprises a fixing mechanism. The fixing mechanism comprises inserting blocks, limiting blocks, inclined grooves and springs, the inserting blocks are slidably connected to the front side and the rear side of the middle of the upper surface of the smoke exhaust pipeline, the limiting blocks are slidably connected to the front side and the rear side of the interior of the smoke exhaust pipeline, limiting grooves are formed in the front surface and the rear surface of the first filter screen, and the limiting blocks are inserted into the limiting grooves in the same side. Inclined grooves are formed in the upper surfaces of the limiting blocks, the inclined grooves and the inserting blocks on the same side are installed in a matched mode, springs are fixedly connected between the ends, away from the first filter screens, of the limiting blocks and the inner wall of the smoke exhaust pipeline, the building fire protection smoke exhaust device is simple and rapid in the dismounting process, and the maintenance efficiency of the filter screens is effectively improved.

Description

Technical Field

[0001] This utility model relates to the technical field of building fire smoke exhaust equipment, specifically a building fire smoke exhaust device. Background Technology

[0002] As modern buildings become taller, denser, and more functionally complex, the speed of smoke diffusion and toxicity of fires are significantly amplified. In order to reduce the occurrence of fires and the damage they cause, in addition to raising people's awareness of self-prevention, it is also necessary to install building fire smoke exhaust devices inside buildings to exhaust toxic smoke produced by flames during a fire, thereby improving the building's active fire prevention capabilities and reducing the fire casualty rate.

[0003] In the prior art, patent publication number CN219934176U discloses a smoke exhaust device for building fire protection, including a main body. Mounting brackets are fixedly installed on the upper left and upper right sides of the main body. A set of fixing bolts is movably inserted into the upper front and upper rear of each of the two mounting brackets. The two mounting brackets are symmetrically distributed left and right, and the two sets of fixing bolts are symmetrically distributed front and back, with two bolts in each set. A filter frame is provided at the left end of the main body. An auxiliary component is fixedly installed on the left side inside the main body, and a fan is fixedly installed in the middle of the right end of the main body.

[0004] The following are the disadvantages of this type of building fire smoke exhaust device: the filter screen is fixed by bolts. When the filter screen is replaced or cleaned, the operator needs to repeatedly disassemble and tighten the bolts, which is cumbersome and the filter screen maintenance efficiency is low. Therefore, we propose a building fire smoke exhaust device. Utility Model Content

[0005] The technical problem this utility model aims to solve is to overcome existing defects and provide a building fire smoke exhaust device. Through a fixing mechanism, a limiting block, under the action of a spring, inserts into the limiting groove on the front and rear surfaces of a filter screen, thereby fixing the filter screen in place. When disassembling the filter screen, simply press down on the insert block to squeeze the inclined groove, causing the limiting block to move out of the limiting groove, thus unlocking the filter screen. Then, pull the handle to remove the filter screen. The disassembly process is simple and quick, effectively improving the maintenance efficiency of the filter screen and effectively solving the problems in the background technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a building fire smoke exhaust device, including a mounting frame, a smoke exhaust pipe fixedly connected to the upper surface of the mounting frame, a slot provided inside the smoke exhaust pipe, a filter screen inserted into the slot, and a fixing mechanism;

[0007] The fixing mechanism includes an insert block, a limiting block, an inclined groove, and a spring. The insert blocks are slidably connected to the front and rear sides of the upper surface of the exhaust pipe. Limiting blocks are slidably connected to the front and rear sides of the interior of the exhaust pipe. Limiting grooves are opened on the front and rear surfaces of the filter screen, and the limiting blocks are inserted into the limiting grooves on the same side. An inclined groove is opened on the upper surface of the limiting block, and the inclined groove cooperates with the insert block on the same side. A spring is fixedly connected between the end of the limiting block away from the filter screen and the inner wall of the exhaust pipe. Through the fixing mechanism, the limiting block is inserted into the limiting groove on the front and rear surfaces of the filter screen under the action of the spring, thereby fixing the filter screen. When disassembling the filter screen, simply press down on the insert block to squeeze the inclined groove, thereby driving the limiting block to leave the limiting groove, thus unlocking the filter screen. Then, pull the handle to remove the filter screen. The disassembly process is simple and quick, effectively improving the maintenance efficiency of the filter screen.

[0008] Furthermore, a microcontroller is installed on the outside of the mounting bracket. The input terminal of the microcontroller is electrically connected to an external power source to control the operation of electrical appliances.

[0009] Furthermore, a smoke inlet is fixedly connected to the lower left side of the exhaust pipe, and a filter screen is fixedly connected inside the smoke inlet to prevent large dust particles from entering the exhaust pipe.

[0010] Furthermore, a smoke outlet is fixedly connected to the right surface of the smoke exhaust pipe, and a smoke exhaust fan is fixedly connected inside the smoke outlet. The input end of the smoke exhaust fan is electrically connected to the output end of the microcontroller to filter the smoke and absorb the toxic gases inside the smoke.

[0011] Furthermore, the lower surface of the mounting bracket is fixedly connected with evenly distributed smoke detectors, which are bidirectionally electrically connected to a microcontroller for fire monitoring.

[0012] Furthermore, the front and rear surfaces of the filter screen are provided with mounting grooves, and rubber sealing strips are fixedly connected in the mounting grooves to improve the sealing performance.

[0013] Furthermore, a handle is fixedly connected to the upper surface of the filter screen by bolts, making it easy to pull out the filter screen.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This building fire smoke exhaust device has the following advantages:

[0015] The fixing mechanism allows the limiting block to be inserted into the limiting groove on the front and rear surfaces of filter screen one under the action of the spring, thereby fixing filter screen one in place. When disassembling filter screen one, simply press down on the insert block to squeeze the inclined groove, thereby driving the limiting block to leave the limiting groove, thus unlocking filter screen one. Then, pull the handle to remove the filter screen. The disassembly process is simple and quick, effectively improving the maintenance efficiency of the filter screen. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 3 This is an enlarged structural diagram of point A in this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the filter screen of this utility model.

[0020] In the diagram: 1. Mounting bracket, 2. Exhaust pipe, 3. Smoke inlet, 4. Smoke outlet, 5. Filter screen one, 6. Handle, 7. Fixing mechanism, 71. Insert block, 72. Limiting block, 73. Inclined groove, 74. Spring, 8. Filter screen two, 9. Smoke alarm, 10. Exhaust fan, 11. Microcontroller, 12. Rubber sealing strip. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4This embodiment provides a technical solution: a building fire smoke exhaust device, including a mounting frame 1. A smoke exhaust pipe 2 is fixedly connected to the upper surface of the mounting frame 1. A slot is provided inside the smoke exhaust pipe 2, and a filter screen 5 is inserted into the slot. When smoke passes through the filter screen 5 inside the smoke exhaust pipe 2, the filter screen 5 absorbs the smoke dust and toxic gases in the smoke (the filter screen 5 can be made of 3M-P100 grade activated carbon filter cotton, which can effectively intercept fine smoke dust and absorb toxic gases at the same time), thereby purifying the smoke and preventing smoke from spreading. The smoke is discharged outside the building to pollute the air. The front and rear surfaces of filter screen 5 are both provided with mounting grooves, and rubber sealing strips 12 are fixedly connected to each groove. A handle 6 is fixedly connected to the upper surface of filter screen 5 by bolts. A smoke inlet 3 is fixedly connected to the lower left side of the exhaust duct 2. A second filter screen 8 is fixedly connected inside the smoke inlet 3. The second filter screen 8 inside the smoke inlet 3 can prevent large dust particles from entering the exhaust duct 2. A microcontroller 11 is installed outside the mounting bracket 1. The input terminal of the microcontroller 11 is electrically connected to an external power source. A smoke outlet 4 is fixedly connected to the right surface of the smoke duct 2. An exhaust fan 10 is fixedly connected inside the smoke outlet 4. The input terminal of the exhaust fan 10 is electrically connected to the output terminal of a microcontroller 11. The mounting bracket 1 is fixed in a suitable position inside the building, while simultaneously extending the right end of the smoke outlet 4 to the outside of the building. Evenly distributed smoke detectors 9 are fixedly connected to the lower surface of the mounting bracket 1. The smoke detectors 9 are bidirectionally electrically connected to the microcontroller 11. When a fire occurs inside the building, the flames produce smoke, and smoke particles in the smoke enter the smoke detectors 9. Internally, this disrupts the internal current of the smoke alarm 9, causing the smoke alarm 9 to sound an alarm and simultaneously send an electrical signal to the microcontroller 11. When the microcontroller 11 receives the electrical signal generated by the smoke alarm 9, the microcontroller 11 controls the exhaust fan 10 to run. The fan blades of the exhaust fan 10 rotate, expelling the gas inside the exhaust pipe 2 through the smoke outlet 4, creating a negative pressure inside the exhaust pipe 2, causing smoke to continuously enter the exhaust pipe 2 through the smoke inlet 3 and finally be discharged through the smoke outlet 4. The feature is that it also includes a fixing mechanism 7.

[0023] Fixing mechanism 7 includes an insert block 71, a limiting block 72, an inclined groove 73, and a spring 74. The insert block 71 is slidably connected to the front and rear sides of the upper surface of the exhaust pipe 2. The front and rear sides of the interior of the exhaust pipe 2 are slidably connected to the limiting blocks 72. The front and rear surfaces of the filter screen 5 are provided with limiting grooves. The limiting blocks 72 are all inserted into the limiting grooves on the same side. The upper surface of the limiting blocks 72 is provided with inclined grooves 73. The inclined grooves 73 are all installed in conjunction with the insert blocks 71 on the same side. The end of the limiting block 72 away from the filter screen 5 is connected to the exhaust pipe. Springs 74 are fixedly connected between the inner walls of the flue 2. When the filter screen needs to be cleaned or replaced, press down on the insert block 71. The insert rod at the lower end of the insert block 71 squeezes the inclined groove 73, causing the limiting block 72 to move away from the filter screen 5 (the limiting block 72 is limited by the inner wall of the flue 2, so that the limiting block 72 can only move longitudinally back and forth), causing the limiting block 72 to separate from the limiting groove. The springs 74 contract. At this time, pull the handle 6 upward to pull the filter screen 5 out of the slot, thereby cleaning or replacing the filter screen 5.

[0024] The working principle of the building fire smoke exhaust device provided by this utility model is as follows: When using the building fire smoke exhaust device, the mounting bracket 1 is fixed in a suitable position inside the building, and the right end of the smoke outlet 4 extends to the outside of the building. When a fire occurs inside the building, the flames produce smoke, and the smoke particles in the smoke enter the smoke alarm 9, thereby disrupting the current inside the smoke alarm 9 and causing the smoke alarm 9 to sound an alarm. At the same time, it sends an electrical signal to the microcontroller 11. When the microcontroller 11 receives the electrical signal generated by the smoke alarm 9, the microcontroller 11 controls the smoke exhaust fan 10 to run. The fan blades of the smoke exhaust fan 10 rotate, and the gas inside the smoke exhaust pipe 2 is discharged through the smoke outlet 4, creating a negative pressure inside the smoke exhaust pipe 2. This causes smoke to continuously enter the smoke exhaust pipe 2 through the smoke inlet 3 and finally be discharged through the smoke outlet 4. At the same time, the filter screen inside the smoke inlet 3... Under the action of 8, large dust particles can be blocked from entering the interior of the smoke exhaust pipe 2. When the smoke passes through the filter screen 5 inside the smoke exhaust pipe 2, the filter screen 5 absorbs the smoke dust and toxic gases in the smoke (the filter screen 5 can be made of 3M-P100 grade activated carbon filter cotton, which can effectively intercept fine smoke dust and absorb toxic gases at the same time), thereby purifying the smoke and preventing the smoke from being discharged outside the building and polluting the air. When the filter screen needs to be cleaned or replaced, press down on the insert block 71. The insert rod at the lower end of the insert block 71 squeezes the inclined groove 73, causing the limiting block 72 to move away from the filter screen 5 (the limiting block 72 is limited by the inner wall of the smoke exhaust pipe 2, so that the limiting block 72 can only move longitudinally back and forth), causing the limiting block 72 to separate from the limiting groove. The spring 74 contracts. At this time, pull up the handle 6 to pull the filter screen 5 out of the slot, thereby cleaning or replacing the filter screen 5.

[0025] It is worth noting that the smoke detector 9 disclosed in the above embodiments uses NIS-07, the smoke exhaust fan 10 uses BPT10-23-1D, and the microcontroller 11 uses AT89S51. The microcontroller 11 controls the operation of the smoke detector 9 and the smoke exhaust fan 10 using methods commonly used in the prior art.

[0026] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A building fire-fighting smoke exhaust device, comprising a mounting frame (1), wherein a smoke exhaust pipe (2) is fixedly connected to the upper surface of the mounting frame (1), and a slot is provided inside the smoke exhaust pipe (2), into which a filter screen (5) is inserted, characterized in that: It also includes fixed mechanisms (7); Fixing mechanism (7): It includes a plug (71), a limiting block (72), a groove (73) and a spring (74). The plug (71) is slidably connected to the front and rear sides of the middle of the upper surface of the exhaust pipe (2). The front and rear sides of the interior of the exhaust pipe (2) are slidably connected to the limiting blocks (72). The front and rear surfaces of the filter screen (5) are provided with limiting grooves. The limiting blocks (72) are inserted into the limiting grooves on the same side. The upper surface of the limiting blocks (72) is provided with grooves (73). The grooves (73) are installed in conjunction with the plug (71) on the same side. The end of the limiting block (72) away from the filter screen (5) is fixedly connected to the inner wall of the exhaust pipe (2) with a spring (74).

2. A building fire smoke exhaust apparatus according to claim 1, wherein: The mounting bracket (1) is equipped with a microcontroller (11) on its exterior, and the input terminal of the microcontroller (11) is electrically connected to an external power supply.

3. A building fire smoke exhaust apparatus according to claim 1, wherein: The lower left side of the exhaust pipe (2) is fixedly connected to the smoke inlet (3), and the inside of the smoke inlet (3) is fixedly connected to the filter screen (8).

4. A building fire smoke exhaust apparatus according to claim 2, wherein: The right surface of the exhaust pipe (2) is fixedly connected to a smoke outlet (4), and the inside of the smoke outlet (4) is fixedly connected to an exhaust fan (10). The input end of the exhaust fan (10) is electrically connected to the output end of the microcontroller (11).

5. A building fire smoke exhaust apparatus according to claim 2, wherein: The lower surface of the mounting bracket (1) is fixedly connected with uniformly distributed smoke detectors (9), and the smoke detectors (9) are bidirectionally electrically connected to the microcontroller (11).

6. A building fire smoke exhaust apparatus according to claim 1, wherein: The front and rear surfaces of the filter screen (5) are provided with mounting grooves, and rubber sealing strips (12) are fixedly connected in the mounting grooves.

7. A building fire smoke exhaust apparatus according to claim 1, wherein: The upper surface of the filter screen (5) is fixedly connected to a handle (6) by bolts.

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