Wind-direction-adjustable smoke exhaust fan box

Abstract

The utility model relates to the technical field of smoke exhaust fan boxes, and discloses a wind direction adjustable smoke exhaust fan box which comprises a smoke exhaust box shell and a smoke guide pipe, the smoke guide pipe is fixedly connected to the outer wall of the smoke exhaust box shell, and a wind direction adjusting assembly used for changing the smoke exhaust flow direction is arranged at the bottom of the smoke guide pipe. An anti-reversing assembly for preventing the wind direction adjusting assembly from reversing is arranged below the smoke guide pipe, and the smoke exhaust flow direction can be flexibly changed through linkage of an L-shaped adjusting handle, an arc-shaped block, a rotating block, a square rod, a rotating rod and a smoke guide plate; secondly, in the initial stage of a fire, according to the position of a fire source and the smoke diffusion direction, the smoke guide plate can be adjusted in time, the smoke is guided to the direction of the exhaust pipe which is most beneficial to exhaust, for example, when the fire occurs on one side of a certain floor in a building, the smoke is mainly exhausted from the exhaust pipe close to one side of the fire source by adjusting the smoke guide plate; therefore, a more optimized fire-fighting smoke exhaust strategy is realized, and the effectiveness of the whole building fire-fighting system is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of smoke exhaust fan boxes, specifically a smoke exhaust fan box with adjustable airflow direction. Background Technology

[0002] Smoke exhaust fan boxes are mainly used to remove dense smoke from buildings in emergency situations such as fires, providing good conditions for personnel evacuation and fire rescue. From a functional perspective, they are also called "smoke exhaust ventilation fan boxes," emphasizing their ventilation and smoke exhaust functions. In some industrial sites, depending on their specific application scenarios, they are also called "industrial smoke exhaust fan boxes."

[0003] Traditional smoke exhaust fan boxes on the market have many drawbacks. Firstly, the fixed smoke exhaust direction is a significant defect. Due to the simple and non-adjustable structure of the exhaust duct, the smoke exhaust direction cannot be changed after installation. In practical applications, especially in complex building layouts, when the location of the fire and the smoke diffusion path are inconsistent with the preset smoke exhaust direction, the smoke exhaust efficiency will be greatly reduced. For example, in large commercial complexes, different areas have diverse functions, and the smoke flow during a fire is complex and changeable. Traditional smoke exhaust fan boxes cannot accurately respond to this, resulting in smoke not being discharged in a timely manner, and a large amount of smoke accumulating inside the building, seriously... Firstly, it severely obstructs the line of sight for personnel evacuation, slowing down the evacuation speed and posing great difficulties to fire rescue work. It makes it difficult for firefighters to quickly enter the fire scene to carry out firefighting operations, affecting the timeliness and effectiveness of rescue. Secondly, traditional smoke exhaust fan boxes lack adaptability to different smoke exhaust needs. Under some special fire protection strategy requirements, such as zoned smoke exhaust control or flexible adjustment of the smoke exhaust focus direction according to the location of the fire source, its fixed smoke exhaust mode cannot meet the requirements, limiting the overall effectiveness of the fire protection system and failing to provide more accurate and efficient smoke exhaust services to ensure the safety of buildings and personnel in a fire.

[0004] Therefore, an adjustable smoke exhaust fan box is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide an adjustable smoke exhaust fan box to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an adjustable smoke exhaust fan box, comprising a smoke exhaust box shell and a smoke guide pipe, wherein the smoke guide pipe is fixedly connected to the outer wall of the smoke exhaust box shell, and a wind direction adjustment component for changing the direction of smoke exhaust is provided at the bottom of the smoke guide pipe, and an anti-reverse component for preventing the wind direction adjustment component from reversing is provided below the smoke guide pipe.

[0007] Preferably, the wind direction adjustment component includes a dustproof shell, which is fixedly connected to the bottom of the smoke guide pipe. A square rod is rotatably connected inside the dustproof shell, and a rotating block is rotatably connected inside the square rod. An adjusting nut is threadedly connected to the end of the rotating block away from the square rod.

[0008] Preferably, the wind direction adjustment component further includes a positioning block, the top of which is rotatably connected to an L-shaped adjustment handle, and the outer wall of the L-shaped adjustment handle is fixedly connected to an arc-shaped block, the arc-shaped block having an adjustment groove inside.

[0009] Preferably, the wind direction adjustment component further includes a rotating rod, which is fixedly connected to the top of the square rod and rotatably connected to the inside of the smoke guide pipe, and a smoke guide plate is rotatably connected to the outer wall of the rotating rod.

[0010] Preferably, a gear disk is fixedly connected to the outer wall of the L-shaped adjusting handle, and the gear disk is disposed inside the positioning block, and a limiting tooth is rotatably connected to the top of the positioning block.

[0011] Preferably, the rotating block is slidably connected inside the adjusting groove.

[0012] Preferably, a torsion spring is provided between the limiting tooth and the positioning block.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. By setting up the airflow adjustment component, after the staff rotates the arc block by adjusting the L-shaped handle, the arc block will drive the rotating rod to rotate through the rotating block and the square rod, so that the rotating rod changes the direction of smoke exhaust through the smoke guide plate. In contrast, the traditional smoke exhaust fan box and exhaust pipe usually have a fixed smoke exhaust direction. Once the installation is completed, the smoke exhaust direction is basically fixed. In actual use, if the layout of the building changes, the location of the fire is different, or the fire protection strategy needs to be adjusted, it is difficult to change the direction of smoke exhaust. Through the linkage of the L-shaped adjustment handle, arc block, rotating block, square rod, rotating rod and smoke guide plate, the direction of smoke exhaust can be flexibly changed.

[0015] Secondly, traditional smoke extraction equipment is relatively passive in adjusting fire protection strategies because its smoke extraction method lacks flexibility. When formulating fire protection strategies, firefighters are limited by the fixed smoke extraction direction of the equipment and cannot make full use of the smoke extraction system to deal with different fire scenarios. The above-mentioned structure makes fire protection strategies more flexible and diverse. In the early stage of a fire, the smoke guide can be adjusted in time according to the location of the fire source and the direction of smoke diffusion to guide the smoke to the direction of the exhaust duct that is most conducive to the exhaust. For example, if a fire occurs on one side of a certain floor in a building, by adjusting the smoke guide, the smoke can be mainly discharged from the exhaust duct on the side closer to the fire source, while the exhaust duct on the other side can be used for auxiliary smoke extraction, thereby achieving a more optimized fire smoke extraction strategy and improving the effectiveness of the entire building's fire protection system.

[0016] 2. By setting up the anti-reverse component, during the process of the L-shaped adjustment handle driving the gear disk to rotate along the positioning block, the torsion spring between the positioning block and the limiting tooth will make the limiting tooth always abut against the gear disk. In this way, the gear disk limits the rotation direction of the L-shaped adjustment handle. Compared with the traditional smoke exhaust fan box, it avoids the displacement or change of the smoke exhaust flow adjustment device due to unintentional touch by personnel or slight vibration of the equipment, which would affect the normal operation of the equipment during a fire.

[0017] Furthermore, the fit between the limiting teeth and the gear disk effectively solves the problem of misoperation. The continuous resistance provided by the torsion spring ensures that the limiting teeth tightly lock the gear disk. The gear disk will only rotate when the operator intentionally overcomes the torsion spring force and rotates the L-shaped adjustment handle according to the correct operating method, thereby changing the smoke exhaust flow direction. This reduces the risk of changing the smoke exhaust flow direction due to misoperation, ensures the stability of the smoke exhaust fan box in non-fire periods and the reliability of the smoke exhaust flow direction adjustment in fire periods, and improves the safety and stability of the entire smoke exhaust system. Attached Figure Description

[0018] Figure 1 This is a schematic diagram showing the overall structural positional relationship of this utility model;

[0019] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0020] Figure 3 This utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0021] Figure 4 This is a schematic diagram showing the positional relationship between the rotating rod, the smoke guide pipe, and the smoke guide plate of this utility model;

[0022] Figure 5 This is a schematic diagram showing the positional relationship between the wind direction adjustment component and the anti-reverse component of this utility model;

[0023] Figure 6 This utility model Figure 5 Enlarged view of the structure at point B in the middle.

[0024] Attached reference numerals: 11. Exhaust box shell; 12. Smoke guide pipe;

[0025] The wind direction adjustment assembly includes: 21. Dustproof housing; 22. Square rod; 23. Rotating block; 24. Adjusting nut; 25. Positioning block; 26. L-shaped adjustment handle; 27. Arc-shaped block; 28. Adjustment groove; 29. ​​Rotating rod; 210. Smoke guide plate;

[0026] The anti-reverse component includes: 31, gear disk; 32, limiting tooth. Detailed Implementation

[0027] 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.

[0028] Please see Figures 1 to 6 An embodiment of this utility model is provided: an adjustable smoke exhaust fan box, including a smoke exhaust box shell 11 and a smoke guide pipe 12. The smoke guide pipe 12 is fixedly connected to the outer wall of the smoke exhaust box shell 11. A wind direction adjustment component for changing the smoke exhaust flow direction is provided at the bottom of the smoke guide pipe 12. An anti-reverse component to prevent the wind direction adjustment component from reversing is provided below the smoke guide pipe 12.

[0029] The wind direction adjustment assembly includes a dust cover 21, which is fixedly connected to the bottom of the smoke duct 12. A square rod 22 is rotatably connected inside the dust cover 21, and a rotating block 23 is rotatably connected inside the square rod 22. An adjusting nut 24 is threadedly connected to the end of the rotating block 23 away from the square rod 22.

[0030] The wind direction adjustment assembly also includes a positioning block 25, with an L-shaped adjustment handle 26 rotatably connected to the top of the positioning block 25. An arc-shaped block 27 is fixedly connected to the outer wall of the L-shaped adjustment handle 26, and an adjustment groove 28 is provided inside the arc-shaped block 27.

[0031] The wind direction adjustment assembly also includes a rotating rod 29, which is fixedly connected to the top of the square rod 22 and rotatably connected to the inside of the smoke guide pipe 12. A smoke guide plate 210 is rotatably connected to the outer wall of the rotating rod 29.

[0032] A gear disk 31 is fixedly connected to the outer wall of the L-shaped adjustment handle 26, and the gear disk 31 is located inside the positioning block 25. A limiting tooth 32 is rotatably connected to the top of the positioning block 25.

[0033] The rotating block 23 is slidably connected to the inside of the adjusting groove 28, so that the amplitude of the rotation of the arc block 27 driving the square rod 22 can be set.

[0034] A torsion spring is provided between the limiting tooth 32 and the positioning block 25 so that the limiting tooth 32 always abuts against the gear disk 31.

[0035] Working principle:

[0036] During operation, if the operator needs to change the amount of flue gas discharged from the smoke duct 12 from the smoke exhaust box housing 11, the operator only needs to turn the L-shaped adjustment handle 26, so that the L-shaped adjustment handle 26 drives the rotating block 23 to rotate through the arc block 27, so that the end of the rotating block 23 away from the arc block 27 rotates along the square rod 22, and at the same time the rotating block 23 will drive the square rod 22 to rotate along the inside of the dustproof housing 21.

[0037] During the rotation of the dust cover 21, the rotating rod 29 at the top rotates synchronously, causing the rotating rod 29 to drive the smoke guide plate 210 to deflect to one side of the smoke guide pipe 12. This causes the smoke to flow out along the other side of the smoke guide pipe 12. The rotating rod 29 changes the direction of smoke exhaust through the smoke guide plate 210. Traditional smoke exhaust fan boxes and exhaust pipes usually have a fixed smoke exhaust direction. In actual use, if the layout of the building changes, the location of the fire changes, or the fire protection strategy needs to be adjusted, it is difficult to change the direction of smoke exhaust. Through the linkage of the above components, the direction of smoke exhaust can be flexibly changed, and the fire protection strategy can be more flexible and diverse. By guiding the smoke to the direction of the exhaust pipe that is most conducive to exhaust through the smoke guide plate 210, a more optimized fire smoke exhaust strategy can be achieved, thereby improving the effectiveness of the entire building's fire protection system.

[0038] As the L-shaped adjustment handle 26 rotates along the top of the positioning block 25, the positioning block 25 drives the gear disk 31 to rotate synchronously. The limiting tooth 32, through the torsion spring, will always resist the gear disk 31, thereby limiting the rotation direction of the L-shaped adjustment handle 26 through the gear disk 31. Compared with traditional smoke exhaust fan boxes, this avoids the displacement or change of the smoke exhaust flow direction adjustment device due to unintentional touch by personnel or slight vibration of the equipment, which would affect the normal operation of the equipment during a fire. At the same time, it reduces the risk of changing the smoke exhaust flow direction due to misoperation, ensuring the stability of the smoke exhaust flow direction setting in non-fire periods and the reliability of the smoke exhaust flow direction adjustment during fire periods, thus improving the safety and stability of the entire smoke exhaust system.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A smoke exhaust fan box with adjustable airflow direction, comprising a smoke exhaust box shell (11) and a smoke guide pipe (12), wherein the smoke guide pipe (12) is fixedly connected to the outer wall of the smoke exhaust box shell (11), characterized in that: The bottom of the smoke guide pipe (12) is provided with a wind direction adjustment component for changing the direction of the exhaust smoke, and the bottom of the smoke guide pipe (12) is provided with an anti-reverse component to prevent the wind direction adjustment component from reversing.

2. The adjustable smoke exhaust fan box according to claim 1, characterized in that: The wind direction adjustment component includes a dust cover (21), which is fixedly connected to the bottom of the smoke guide pipe (12). A square rod (22) is rotatably connected inside the dust cover (21), and a rotating block (23) is rotatably connected inside the square rod (22). An adjusting nut (24) is threadedly connected to the end of the rotating block (23) away from the square rod (22).

3. The adjustable smoke exhaust fan box according to claim 2, characterized in that: The wind direction adjustment component also includes a positioning block (25), the top of which is rotatably connected to an L-shaped adjustment handle (26), and the outer wall of the L-shaped adjustment handle (26) is fixedly connected to an arc-shaped block (27), and the interior of the arc-shaped block (27) is provided with an adjustment groove (28).

4. The adjustable smoke exhaust fan box according to claim 3, characterized in that: The wind direction adjustment assembly also includes a rotating rod (29), which is fixedly connected to the top of the square rod (22) and rotatably connected to the inside of the smoke guide pipe (12). A smoke guide plate (210) is rotatably connected to the outer wall of the rotating rod (29).

5. The adjustable smoke exhaust fan box according to claim 3, characterized in that: The outer wall of the L-shaped adjusting handle (26) is fixedly connected to a gear disk (31), and the gear disk (31) is located inside the positioning block (25). The top of the positioning block (25) is rotatably connected to a limiting tooth (32).

6. The adjustable smoke exhaust fan box according to claim 3, characterized in that: The rotating block (23) is slidably connected to the inside of the adjusting groove (28).

7. The adjustable smoke exhaust fan box according to claim 5, characterized in that: A torsion spring is provided between the limiting tooth (32) and the positioning block (25).

Images