Smoke exhaust pipeline for fire safety

Abstract

The utility model relates to the field of smoke exhaust pipelines, in particular to a smoke exhaust pipeline for fire safety, which comprises a main pipe body and a locking assembly, the locking assembly comprises an overturning base fixedly connected in the main pipe body, the overturning base is rotatably connected with a filter screen through a rotating shaft, a first limiting column is slidably connected in the filter screen, and the first limiting column is fixedly connected with the main pipe body. An electric telescopic rod is rotationally connected to the outside of the first limiting column, a second limiting column is rotationally connected to the bottom of the electric telescopic rod, a reset button is embedded in the main pipe body, and a clamping block is fixedly connected to the top of the reset button. When the filter screen needs to be reset, the filter screen is pulled, the electric telescopic rod can be driven to move while the filter screen is pulled, after the electric telescopic rod is reset along with the filter screen, a reset button is pressed, a clamping block can be extruded by the reset button to move upwards, the electric telescopic rod is limited, and meanwhile, the electric telescopic rod is driven to move upwards. And the filter screen can be reset after being limited by the electric telescopic rod.

Description

Technical Field

[0001] The utility model relates to the field of smoke exhaust pipes, in particular to a smoke exhaust pipe for fire safety. Background Art

[0002] When a fire occurs, the smoke exhaust duct can discharge smoke and dust inside the building to the outdoors, which can play a positive role in suppressing the spread of fire. The dust in the smoke exhaust duct may cause the smoke exhaust duct to explode. In order to avoid the accumulation of dust in the smoke exhaust duct during daily use, a dust prevention device is usually installed at the air inlet of the smoke exhaust duct system.

[0003] After searching, a Chinese patent disclosed a dust-proof building fire smoke exhaust duct (publication number CN 215294127U). The patented technology uses a fusible metal sheet to connect the dust filter screen to a structural design that can melt and cause the dust filter screen to fall down when a fire occurs, thereby increasing the area of ​​the air inlet duct of the application and achieving the effect of increasing the smoke exhaust efficiency.

[0004] Although this patented technology solves the problem of increasing the area of ​​the air inlet duct of the present application when a fire occurs, thereby achieving the effect of increasing the smoke exhaust efficiency, this patented technology uses a soluble metal sheet to connect the dust screen. When the dust screen needs to be reset, a new soluble metal sheet needs to be reinstalled, which is rather troublesome. Therefore, a fire safety smoke exhaust duct is proposed to solve the above problem. Utility Model Content

[0005] The purpose of the utility model is to provide a smoke exhaust duct for fire safety in order to solve the above problems, thereby improving the problem that a new soluble metal sheet needs to be reinstalled when the dust screen needs to be reset.

[0006] The utility model achieves the above-mentioned purpose through the following technical scheme: a smoke exhaust duct for fire safety, including a main body and a locking assembly, the locking assembly including a flip base fixedly connected to the main body, the flip base is rotatably connected to a filter screen through a rotating shaft, a first limit column is slidably connected to the filter screen, the first limit column is rotatably connected to an electric telescopic rod outside, the bottom of the electric telescopic rod is rotatably connected to a second limit column, a reset button is embedded in the main body, a card block is fixedly connected to the top of the reset button, and a smoke sensor located on one side of the reset button is installed at the bottom of the main body.

[0007] Preferably, the top of the filter screen is in the same height as the inner diameter of the main pipe body, and the block is located on one side of the electric telescopic rod.

[0008] Preferably, an air inlet pipe is installed on one side of the main pipe body, and an exhaust pipe is installed on one side of the main pipe body, and the air inlet pipe and the exhaust pipe are symmetrically arranged with each other through the main pipe body.

[0009] Preferably, two conical guide plates are fixedly connected in the main pipe body, an axial flow fan located on one side of the conical guide plate is fixedly connected in the main pipe body, and the two conical guide plates are symmetrically distributed with each other through the axial flow fan.

[0010] Preferably, a first slideway is provided in the filter screen, and the electric telescopic rod is slidably connected in the first slideway.

[0011] Preferably, two first limit grooves are provided in the first slide and are symmetrically distributed, and the first limit column is slidably connected in the first limit groove. Through the first slide and the first limit groove, when the electric telescopic rod is extended and retracted, the first limit column can be limited when the first limit column slides to prevent the electric telescopic rod from detaching from the filter.

[0012] Preferably, a block groove is provided in the main pipe body, the block is slidably connected in the block groove, and a second slideway is provided in the main pipe body and is located above the block groove.

[0013] Preferably, two second limiting grooves are formed in the second slideway and are symmetrically distributed, and the second limiting pillar is slidably connected in the second limiting grooves.

[0014] The beneficial effects of the utility model are:

[0015] 1. When the filter needs to be reset, pull the filter. When the filter is pulled, the electric telescopic rod will move. When the electric telescopic rod is reset along with the filter, press the reset button. The block will be squeezed by the reset button and move upward to limit the electric telescopic rod. At the same time, the filter can be reset by being limited by the electric telescopic rod.

[0016] 2. Through the provided block groove, the second slideway and the second limit groove, when the block slides into the block groove, the electric telescopic rod moves in the second slideway under the gravity of the filter screen, and at the same time, the second limit column moves in the second limit groove, thereby limiting the moving electric telescopic rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0019] Figure 3 It is a cross-sectional schematic diagram of the dustproof net of the utility model;

[0020] Figure 4 for Figure 2 A is an enlarged view of the middle image.

[0021] In the figure: 1. main body; 2. locking assembly; 21. flip base; 211. filter; 22. first limit column; 23. electric telescopic rod; 24. second limit column; 25. reset button; 26. block; 27. smoke sensor; 3. air inlet pipe; 4. exhaust pipe; 5. conical guide plate; 6. axial fan; 7. first slide; 8. first limit slot; 9. block slot; 10. second slide; 11. second limit slot. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] When implementing: Figure 1-4 As shown, a smoke exhaust duct for fire safety includes a main body 1 and a locking assembly 2, the locking assembly 2 includes a flip base 21 fixedly connected to the main body 1, the flip base 21 is rotatably connected to a filter screen 211 through a rotating shaft, a first limiting column 22 is slidably connected to the filter screen 211, an electric telescopic rod 23 is rotatably connected to the outside of the first limiting column 22, the bottom of the electric telescopic rod 23 is rotatably connected to a second limiting column 24, the second limiting column 24 is slidably connected to the main body 1, a reset button 25 is embedded and installed in the main body 1, a block 26 is fixedly connected to the top of the reset button 25, the block 26 is located on one side of the electric telescopic rod 23, and a smoke sensor 27 located on one side of the reset button 25 is installed at the bottom of the main body 1.

[0024] like Figure 1 and Figure 2 As shown, an air intake pipe 3 is installed on one side of the main body 1, and an exhaust pipe 4 is installed on one side of the main body 1. The air intake pipe 3 and the exhaust pipe 4 are symmetrically distributed through the main body 1. Two conical guide plates 5 are fixedly connected in the main body 1, and an axial flow fan 6 located on one side of the conical guide plate 5 is fixedly connected in the main body 1. The two conical guide plates 5 are symmetrically distributed through the axial flow fan 6. When smoke exhaust is required, the axial flow fan 6 is turned on, and the working axial flow fan 6 will inhale external smoke through the air intake pipe 3 and exhaust the inhaled smoke through the exhaust pipe 4.

[0025] like Figure 3 and Figure 4As shown, a first slide 7 is provided in the filter 211, the electric telescopic rod 23 is slidably connected in the first slide 7, two first limiting grooves 8 are provided in the first slide 7 and are symmetrically distributed, and the first limiting column 22 is slidably connected in the first limiting groove 8. Through the first slide 7 and the first limiting groove 8, when the electric telescopic rod 23 is extended or retracted, the first limiting column 22 can be limited when the first limiting column 22 slides to prevent the electric telescopic rod 23 from detaching from the filter 211.

[0026] like Figure 4 As shown, a block groove 9 is provided in the main body 1, and the block 26 is slidably connected in the block groove 9. A second slideway 10 located above the block groove 9 is provided in the main body 1, and two second limiting grooves 11 symmetrically distributed are provided in the second slideway 10. The second limiting column 24 is slidably connected in the second limiting groove 11. Through the provided block groove 9, the second slideway 10 and the second limiting groove 11, when the block 26 slides into the block groove 9, the electric telescopic rod 23 is affected by the gravity of the filter screen 211 and moves in the second slideway 10. At the same time, the second limiting column 24 moves in the second limiting groove 11, thereby limiting the moving electric telescopic rod 23.

[0027] When the utility model is in use, when a fire occurs, the smoke sensor 27 will sense the smoke and send a signal to release the reset button 25, and the block 26 will slide into the block groove 9. At this time, the air inlet area of ​​the main body 1 can be increased, thereby achieving the effect of improving the smoke exhaust efficiency. When the filter 211 descends, the electric telescopic rod 23 will move through the first slide 7 and the first limiting groove 8. When the electric telescopic rod 23 stops moving, it will drive the filter 211 to slowly descend, preventing the filter 211 from descending too quickly and causing damage to the filter 211.

[0028] When the filter 211 needs to be reset, the filter 211 is pulled, and the filter 211 moves, which in turn drives the electric telescopic rod 23 to move. After the filter 211 is reset, the reset button 25 is pressed, and the block 26 is squeezed by the reset button 25 and moves upward to limit the electric telescopic rod 23. At the same time, the filter 211 is limited by the electric telescopic rod 23 to complete the reset.

[0029] It should be noted that the electric telescopic rod 23, smoke sensor 27, conical guide plate 5 and axial flow fan 6 in the above description are all devices with relatively mature application of existing technology. The specific models can be selected according to actual needs. At the same time, the electric telescopic rod 23 and the reset button 25 can be powered by a built-in power supply or by AC power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0030] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A smoke exhaust duct for fire safety, characterized in that: The invention comprises a main body (1) and a locking assembly (2), wherein the locking assembly (2) comprises a flip base (21) fixedly connected to the main body (1), the flip base (21) being rotatably connected to a filter screen (211) via a rotating shaft, a first limiting column (22) being slidably connected to the filter screen (211), the first limiting column (22) being rotatably connected to an electric telescopic rod (23) outside, the bottom of the electric telescopic rod (23) being rotatably connected to a second limiting column (24), a reset button (25) being embedded and installed in the main body (1), and a clamping block (26) being fixedly connected to the top of the reset button (25).

2. The smoke exhaust duct for fire safety according to claim 1, characterized in that: The top of the filter screen (211) is in accordance with the inner diameter height of the main pipe (1), and the clamping block (26) is located on one side of the electric telescopic rod (23).

3. The smoke exhaust duct for fire safety according to claim 1, characterized in that: An air intake pipe (3) is installed on one side of the main body (1), and an exhaust pipe (4) is installed on one side of the main body (1); the air intake pipe (3) and the exhaust pipe (4) are symmetrically distributed with each other through the main body (1).

4. The smoke exhaust duct for fire safety according to claim 1, characterized in that: Two conical guide plates (5) are fixedly connected inside the main pipe body (1), and an axial flow fan (6) located on one side of the conical guide plate (5) is fixedly connected inside the main pipe body (1), and the two conical guide plates (5) are symmetrically distributed with each other through the axial flow fan (6).

5. The smoke exhaust duct for fire safety according to claim 1, characterized in that: A first slideway (7) is provided in the filter screen (211), and the electric telescopic rod (23) is slidably connected in the first slideway (7).

6. The smoke exhaust duct for fire safety according to claim 5, characterized in that: Two first limiting grooves (8) are provided in the first slideway (7) and are symmetrically distributed. The first limiting column (22) is slidably connected in the first limiting grooves (8).

7. The smoke exhaust duct for fire safety according to claim 1, characterized in that: The main pipe body (1) is provided with a block groove (9), the block (26) is slidably connected in the block groove (9), and the main pipe body (1) is provided with a second slideway (10) located above the block groove (9).

8. The smoke exhaust duct for fire safety according to claim 7, characterized in that: Two second limiting grooves (11) are provided in the second slideway (10) and are symmetrically distributed. The second limiting pillar (24) is slidably connected in the second limiting grooves (11).

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