Ventilation device capable of regulating and controlling smoke filtering intensity

Abstract

The utility model relates to a ventilation device capable of regulating and controlling smoke filtering intensity, which comprises a ventilation cavity, a fixed filtering frame is connected to the front part of the ventilation cavity, a rotating rod is rotatably connected to the fixed filtering frame, three shifting pieces are connected to the rotating rod, an interval of 45 degrees is formed between every two adjacent shifting pieces, and a driving motor is mounted on the upper side of the front part of the ventilation cavity. An adjusting assembly is connected to an output shaft of the driving motor and comprises a worm and a worm gear, the worm is connected to the output shaft of the driving motor and rotationally connected with the ventilation cavity, the worm gear is connected to the front portion of the rotating rod and meshed with the worm, and three rotating filtering frames are rotationally connected to the rotating rod. And the rotary filtering frames are in contact connection with the adjacent shifting pieces. According to the utility model, a linkage structure of the adjusting assembly and the multi-stage shifting piece is arranged, the rotating angle of the rotating rod is accurately controlled through the driving motor, the three fan-shaped rotating filtering frames are sequentially unfolded or overlapped, and the rotating filtering frames realize dynamic regulation and control of smoke dust by changing the effective filtering area in the deflection process.

Description

Technical Field

[0001] This utility model relates to the field of flue gas filtration technology, and in particular to a ventilation device with adjustable smoke filtration intensity. Background Technology

[0002] With the acceleration of urbanization, the demand for fire prevention and control in enclosed environments such as high-rise buildings, underground spaces, and industrial plants is becoming increasingly urgent. Smoke is a major factor causing casualties in fires, and its efficient filtration and rapid smoke exhaust technology has become a core requirement of building safety systems. Traditional smoke filtration and ventilation devices mostly adopt fixed multi-layer filter structures. The fixed filtration area cannot cope with the changes in smoke concentration at different stages of a fire. At low concentrations, it leads to excessive wind resistance, and at high concentrations, filter material is prone to penetration, exacerbating fluctuations in filtration efficiency. At the same time, conventional straight-through duct designs are prone to generating turbulence and localized excessive flow velocity, which reduces the efficiency of smoke particle capture.

[0003] To address the above problems, a ventilation device with adjustable smoke filtration intensity has been developed. Utility Model Content

[0004] To overcome the shortcomings of traditional smoke filtration ventilation devices, such as fixed filtration area being unable to cope with changes in smoke concentration at different stages of a fire, excessive wind resistance at low concentrations, and easy filter material penetration at high concentrations, which exacerbates fluctuations in filtration efficiency, as well as the drawbacks of conventional straight-through duct design being prone to turbulence and localized excessive flow velocity, which reduces the efficiency of smoke particle capture, this utility model provides a ventilation device with adjustable smoke filtration intensity.

[0005] The technical solution of this utility model is: a ventilation device with adjustable smoke filtration intensity, comprising a ventilation cavity, a fixed filter frame connected to the front of the ventilation cavity, a rotating rod rotatably connected to the fixed filter frame, three levers connected to the rotating rod, adjacent levers spaced 45 degrees apart, a drive motor mounted on the upper front of the ventilation cavity, an adjustment assembly connected to the output shaft of the drive motor, the adjustment assembly including a worm and a worm wheel, the worm connected to the output shaft of the drive motor, the worm rotatably connected to the ventilation cavity, a worm wheel connected to the front of the rotating rod, the worm wheel meshing with the worm, three rotating filter frames rotatably connected to the rotating rod, the rotating filter frames being the front, middle and rear portions respectively, both the rotating filter frames and the fixed filter frame being fan-shaped structures, each rotating filter frame being in contact with the adjacent levers, and a filtering mechanism provided on the rotating rod.

[0006] In one embodiment, the filtration mechanism includes a mounting frame, which is connected between the left and right sides of the front part of the ventilation cavity. The mounting frame and the rotating rod are rotatably connected. A filter rod is connected to the rear part of the mounting frame, and a guide ring is connected to the front part of the ventilation cavity.

[0007] In one embodiment, the system further includes an installation mechanism comprising mounting plates. The front and rear parts of the ventilation cavity are each connected to symmetrical mounting plates. There are four mounting plates. Each adjacent mounting plate is slidably connected to a bracket. Each bracket is connected to an adjacent mounting plate by a spring. Each bracket is in contact with the ventilation cavity.

[0008] In one embodiment, the ventilation cavity has four first mounting holes at both the front and rear.

[0009] In one embodiment, each mounting plate has two second mounting holes.

[0010] In one embodiment, the upper part of the bracket is connected to a limiting block.

[0011] By adopting the above technical solutions, the beneficial effects of this utility model are:

[0012] 1. This utility model features an adjustment component and a multi-stage lever linkage structure. The rotation angle of the rotating rod is precisely controlled by a drive motor. Three fan-shaped rotating filter frames unfold or overlap sequentially. During the deflection process, the rotating filter frames change the effective filtration area to achieve dynamic control of smoke and dust. At the same time, the guide ring, through its gradually narrowing flow channel design, ensures uniform airflow distribution and effectively improves the filtration effect. The filter rod, fixed filter frame, and rotating filter frame work together to form a multi-layer composite filtration system, ensuring the smoke and dust filtration effect.

[0013] 2. This utility model uses an installation mechanism to buffer the disassembly of the ventilation cavity. When the ventilation cavity is removed, the bracket will support it and the spring will be stretched, effectively preventing the ventilation cavity from falling directly due to excessive weight and causing damage. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a schematic diagram of the partially exploded three-dimensional structure of this utility model.

[0016] Figure 3 This is a three-dimensional structural diagram of the filtration mechanism of this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the installation mechanism of this utility model.

[0018] The markings in the diagram are as follows: 1-ventilation chamber, 2-drive motor, 3-adjustment component, 4-fixed filter frame, 5-rotating filter frame, 6-rotating rod, 7-filter mechanism, 71-mounting bracket, 72-filter rod, 73-guide ring, 8-mounting mechanism, 81-mounting plate, 82-bracket, 83-spring. Detailed Implementation

[0019] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0020] Example 1

[0021] A ventilation device with adjustable smoke filtration intensity, such as Figure 1 and Figure 2 As shown, the system includes a ventilation cavity 1 with four first mounting holes at both the front and rear. A fixed filter frame 4 is connected to the front of the ventilation cavity 1, and a rotating rod 6 is rotatably connected to the fixed filter frame 4. Three levers are connected to the rotating rod 6, with adjacent levers spaced 45 degrees apart. A drive motor 2 is mounted on the upper front of the ventilation cavity 1, and an adjustment assembly 3 is connected to the output shaft of the drive motor 2. The adjustment assembly 3 includes a worm and a worm wheel. The worm is connected to the output shaft of the drive motor 2 and is rotatably connected to the ventilation cavity 1. A worm wheel is connected to the front of the rotating rod 6, and the worm wheel and the worm mesh. Three rotating filter frames 5 are rotatably connected to the rotating rod 6, namely the front, middle, and rear filter frames. Both the rotating filter frames 5 and the fixed filter frame 4 are fan-shaped structures. The rotating filter frames 5 are all connected in contact with adjacent levers. A filter mechanism 7 is provided on the rotating rod 6.

[0022] like Figure 1 and Figure 3 As shown, the filter mechanism 7 includes a mounting bracket 71. The mounting bracket 71 is connected between the left and right sides of the front part of the ventilation cavity 1. The mounting bracket 71 and the rotating rod 6 are rotatably connected. The rear part of the mounting bracket 71 is connected to a filter rod 72. The front part of the ventilation cavity 1 is connected to a guide ring 73.

[0023] It should be noted that a ventilation device with smoke filtration function is a system specifically designed to filter smoke and provide safe air during a fire. It promotes air circulation within the building structure, providing clean air to occupants and reducing the harm of smoke inhalation. When using this device, the ventilation chamber 1 is first installed on the building wall or external equipment through the first mounting hole. Smoke and air circulation occur within the ventilation chamber 1. When adjusting the smoke filtration intensity, the drive motor 2 is activated. The output shaft of the drive motor 2 drives the worm gear to rotate. The worm gear and worm wheel form a 90-degree interleaved transmission, thus converting the horizontal rotation of the drive motor 2 into the vertical axial rotation of the rotating rod 6. When the rotating rod 6 rotates clockwise by 45 degrees, it drives the three paddles to rotate by 45 degrees, thereby driving the front rotating filter frame 5 to rotate clockwise by 45 degrees. At this time, the middle paddle contacts the middle rotating filter frame 5. When the rotating rod 6 rotates clockwise by 90 degrees, the front paddle drives the adjacent rotating filter frame 5 to rotate by 90 degrees, and the middle paddle pushes the middle rotating filter frame 5 to rotate by 45 degrees. The rear paddle contacts the rear rotating filter frame 5. When the rotating rod 6 rotates 135 degrees clockwise, the front paddle drives the adjacent rotating filter frame 5 to rotate 135 degrees, the middle paddle drives the adjacent rotating filter frame 5 to rotate 90 degrees, and the rear paddle drives the adjacent rotating filter frame 5 to rotate 45 degrees. Both the rotating filter frame 5 and the fixed filter frame 4 adopt a fan-shaped opening and closing design, which allows the rotating filter frame 5 to be unfolded from front to back. When the unfolded rotating filter frame 5 needs to be stored, the drive motor 2 drives the adjustment component 3 to reverse, and the rotating filter frame 5 is stored from back to front. During the deflection process, the rotating filter frame 5 achieves dynamic control of smoke and dust by changing the effective filtration area. At the same time, the filter rod 72 in the filter mechanism 7 forms a fixed filtration layer, which can effectively capture smoke and dust particles. The guide ring 73 uses a gradually narrowing flow channel design to make the airflow evenly distributed, effectively improving the filtration effect. The filter rod 72, the fixed filter frame 4, and the rotating filter frame 5 work together to form a multi-layer composite filtration system to ensure the smoke and dust filtration effect.

[0024] Example 2

[0025] Based on Example 1, such as Figure 1 and Figure 4 As shown, it also includes an installation mechanism 8, which includes an installation plate 81. The front and rear parts of the ventilation cavity 1 are connected to symmetrical installation plates 81. There are 4 installation plates 81. Each installation plate 81 has 2 second installation holes. The left and right adjacent installation plates 81 are slidably connected to brackets 82. Each bracket 82 is connected to the adjacent installation plate 81 by a spring 83. Each bracket 82 is in contact with the ventilation cavity 1. Each bracket 82 is connected to a limit block on its upper part.

[0026] It should be noted that when it is necessary to clean the inner wall of the ventilation cavity 1 or replace parts, the ventilation cavity 1 needs to be removed, and the fasteners on the ventilation cavity 1 and the external equipment need to be removed so that the ventilation cavity 1 is no longer fixed. Since the ventilation cavity 1 is heavy, it may be damaged if it is removed directly. The mounting mechanism 8 can be used to cushion the impact. When the ventilation cavity 1 is removed, the bracket 82 will support it and the spring 83 will be stretched, thereby effectively preventing the ventilation cavity 1 from falling directly and causing damage.

[0027] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. All equivalent substitutions made within the principles of this utility model should be included within the protection scope of this utility model. Contents not described in detail in this utility model are existing technologies known to those skilled in the art.

Claims

1. A ventilation device with adjustable smoke filtration intensity, characterized in that: The system includes a ventilation cavity (1), a fixed filter frame (4) connected to the front of the ventilation cavity (1), a rotating rod (6) rotatably connected to the fixed filter frame (4), and three levers connected to the rotating rod (6), with adjacent levers spaced 45 degrees apart. A drive motor (2) is installed on the upper front side of the ventilation cavity (1), and an adjustment assembly (3) is connected to the output shaft of the drive motor (2). The adjustment assembly (3) includes a worm gear and a worm wheel. The drive motor (2) is connected to the output shaft of the worm gear. The worm gear is rotatably connected to the ventilation cavity (1). A worm wheel is connected to the front of the rotating rod (6), and the worm wheel meshes with the worm gear. Three rotating filter frames (5) are rotatably connected to the rotating rod (6). The rotating filter frames (5) are the front, middle and rear parts respectively. Both the rotating filter frames (5) and the fixed filter frame (4) are fan-shaped structures. The rotating filter frames (5) are all connected to the adjacent paddles in contact. A filter mechanism (7) is provided on the rotating rod (6).

2. The ventilation device with adjustable smoke filtration intensity as described in claim 1, characterized in that: The filter mechanism (7) includes a mounting bracket (71), which is connected between the left and right sides of the front part of the ventilation cavity (1). The mounting bracket (71) and the rotating rod (6) are rotatably connected. A filter rod (72) is connected to the rear part of the mounting bracket (71), and a guide ring (73) is connected to the front part of the ventilation cavity (1).

3. The ventilation device with adjustable smoke filtration intensity as described in claim 2, characterized in that: It also includes an installation mechanism (8), which includes an installation plate (81). The front and rear parts of the ventilation cavity (1) are connected to the left and right symmetrical installation plates (81). There are 4 installation plates (81). The left and right adjacent installation plates (81) are slidably connected to brackets (82). Each bracket (82) is connected to the adjacent installation plate (81) with a spring (83). Each bracket (82) is in contact with the ventilation cavity (1).

4. The ventilation device with adjustable smoke filtration intensity as described in claim 1, characterized in that: The ventilation cavity (1) has four first mounting holes on both the front and rear sides.

5. A ventilation device with adjustable smoke filtration intensity as described in claim 3, characterized in that: Each mounting plate (81) has two second mounting holes.

6. The ventilation device with adjustable smoke filtration intensity as described in claim 3, characterized in that: Each bracket (82) has a limit block connected to its upper part.

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