Small-caliber multipurpose pipeline fan

Abstract

The utility model relates to the technical field of ventilators, and discloses a small-caliber multipurpose pipeline fan which comprises a fixed connecting plate, the outer portion of the fixed connecting plate is highly connected to the interior of a pipeline body, a driving assembly is fixedly connected to the interior of the fixed connecting plate, and the driving assembly is fixedly connected with a protective shell. The device comprises a protective shell, a power assembly is fixedly connected to the interior of the protective shell, the power assembly is fixedly connected with a first bevel gear, a plurality of rotating connecting columns are rotatably connected to the interior of the protective shell, one end of each rotating connecting column is fixedly connected with a second bevel gear, and the other end of each rotating connecting column is fixedly connected with a blade. According to the pipeline fan, the second motor is started to drive the second rotating connecting shaft to rotate, the rotating force is transmitted to the first bevel gears, the multiple second bevel gears rotate around the second bevel gears so that the rotating angle of the blades can be adjusted, and the effect that the pipeline fan can be suitable for different purposes is achieved.

Description

Technical Field

[0001] This utility model relates to the field of ventilation fan technology, and in particular to a small-diameter multi-purpose duct fan. Background Technology

[0002] A duct fan is a mechanical device specifically designed for ventilation, exhaust, and air circulation. It is typically installed in a duct system and its function is to increase airflow speed and pressure, thereby ensuring smooth airflow within the duct to achieve ventilation and exhaust purposes. Small-diameter duct fans refer to duct fans with smaller inlet and outlet pipe diameters. Compared to standard duct fans, small-diameter duct fans are suitable for smaller diameter duct systems and are typically used in more compact spaces and applications requiring lower airflow and pressure. They are generally more compact in structure, suitable for installation in smaller ducts, and can effectively provide the required airflow and pressure.

[0003] Chinese Patent CN211649372U discloses a duct fan. Addressing the limitations of existing duct fans, which typically connect to either PVC pipes or flexible hoses, the proposed solution addresses these issues. The duct fan includes a first connecting pipe and a second connecting pipe, which are detachably and sealed together. Both the first and second connecting pipes have slots at their far points, within which a clamping pipe is fixedly installed. This invention is easy to operate, allowing the duct fan to connect to both rigid PVC pipes and flexible hoses, meeting the requirements of the installation market. Furthermore, the duct fan is easy to disassemble and maintain, demonstrating strong practicality.

[0004] However, this technical solution can only improve the practicality externally, but cannot improve the application scenarios and high-use of the fan. This results in different fans being required for different scenarios, leading to reduced practicality and low work efficiency. Therefore, a new type of small-diameter multi-purpose duct fan is proposed. Summary of the Invention

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by providing a small-diameter, multi-purpose duct fan, which aims to improve the problem that some existing devices cannot be used for multiple purposes.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A small-diameter multi-purpose duct fan includes a duct body, an adjustment mechanism fixedly connected inside the duct body, and connecting shells fixedly connected to both the left and right ends of the duct body. A noise reduction mechanism is fixedly connected inside the connecting shells.

[0008] The adjusting mechanism includes a fixed connecting plate, the outer height of which is connected to the inside of the pipe body. A drive assembly is fixedly connected inside the fixed connecting plate. A protective shell is fixedly connected to the drive assembly. A power assembly is fixedly connected inside the protective shell. A first bevel gear is fixedly connected to the power assembly. Multiple rotating connecting columns are rotatably connected inside the protective shell. A second bevel gear is fixedly connected to one end of each rotating connecting column, and a blade is fixedly connected to the other end of each rotating connecting column.

[0009] As a further description of the above technical solution:

[0010] The noise reduction mechanism includes a sponge sound-absorbing layer, the outside of which is fixedly connected to the inside of the connecting shell, a sound insulation material layer is fixedly connected to the inside of the connecting shell, an insulating leak plate is fixedly connected to the inside of the connecting shell, and a noise reduction component is fixedly connected to the bottom of the pipe body.

[0011] As a further description of the above technical solution:

[0012] The drive assembly includes a first motor, the first motor is externally fixedly connected to the inside of the fixed connection plate, the drive end of the first motor is fixedly connected to a first rotating connection shaft, and the outside of the first rotating connection shaft is fixedly connected to the outside of the protective housing.

[0013] As a further description of the above technical solution:

[0014] The power assembly includes a second motor, the second motor being externally fixedly connected to the inside of the protective housing, the drive end of the second motor being fixedly connected to a second rotary connecting shaft, and the outside of the second rotary connecting shaft being fixedly connected to the outside of the first bevel gear;

[0015] As a further description of the above technical solution:

[0016] The noise reduction component includes an arc-shaped connecting plate, the bottom of which is fixedly connected to the bottom of the pipe body. Multiple connecting telescopic columns are fixedly connected to the bottom of the arc-shaped connecting plate. Connecting springs are sleeved on the outside of the connecting telescopic columns, and U-shaped support columns are fixedly connected to the bottom of the connecting telescopic columns.

[0017] As a further description of the above technical solution:

[0018] The outer surfaces of the first bevel gear and the second bevel gear are meshed with each other, and the outer surface of the second bevel gear is rotatably connected to the inside of the protective housing;

[0019] As a further description of the above technical solution:

[0020] One end of the connecting spring is fixedly connected to the bottom of the arc-shaped connecting plate, and the other end of the connecting spring is fixedly connected to the top of the U-shaped support column;

[0021] As a further description of the above technical solution:

[0022] The outer surface of the sponge sound-absorbing layer is fixedly connected to the outer surface of the sound-insulating material layer, and the outer surface of the sound-insulating material layer is fixedly connected to the outer surface of the insulating board.

[0023] The beneficial effects of this utility model are as follows:

[0024] 1. In this utility model, by starting the second motor to drive the second rotating connecting shaft to rotate, the rotational force is transmitted to the first bevel gear. Because the first bevel gear is meshed with multiple second bevel gears, under the transmission of the first bevel gear, the multiple second bevel gears rotate around the second bevel gear, thereby adjusting the rotation angle of the blades, and realizing the effect that the duct fan can be used for different purposes.

[0025] 2. In this utility model, by installing connecting shells at both ends of the pipe body, the connecting shells can reduce the noise generated by the operation of the device because the interior of the connecting shells is equipped with a sponge sound-absorbing layer, a sound insulation material layer and an insulating plate. With the cooperation of the telescopic column and connecting spring at the bottom, the noise of the pipe fan during operation is reduced and will not have an impact on the environment.

[0026] In summary, this utility model has the advantages of wide applicability and low noise. Attached Figure Description

[0027] Figure 1 This is a three-dimensional schematic diagram of a small-diameter multi-purpose duct fan proposed in this utility model;

[0028] Figure 2 This is a schematic diagram of the structure of a U-shaped support column for a small-diameter multi-purpose duct fan proposed in this utility model;

[0029] Figure 3 This is a schematic diagram of the connection shell of a small-diameter multi-purpose duct fan proposed in this utility model;

[0030] Figure 4 This is a schematic diagram of the sound insulation material layer of a small-diameter multi-purpose duct fan proposed in this utility model.

[0031] Legend:

[0032] 1. Pipe body; 2. Fixed connecting plate; 3. First motor; 4. First rotating connecting shaft; 5. Protective shell; 6. Second motor; 7. Second rotating connecting shaft; 8. First bevel gear; 9. Second bevel gear; 10. Rotating connecting column; 11. Blade; 12. Connecting shell; 13. Sponge sound-absorbing layer; 14. Sound insulation material layer; 15. Insulation plate; 16. Arc-shaped connecting plate; 17. Connecting telescopic column; 18. Connecting spring; 19. U-shaped support column diagram. Detailed Implementation

[0033] 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.

[0034] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] Example 1

[0037] like Figure 1 and Figure 2As shown, one embodiment of this utility model is provided: a small-diameter multi-purpose duct fan, including a duct body 1. The duct body 1 is cylindrical in shape and has good corrosion resistance and mechanical strength, which can adapt to different working environments. An adjustment mechanism is fixedly connected inside the duct body 1. The adjustment mechanism includes a fixed connecting plate 2, which is rectangular in shape and is tightly fixedly connected to the inside of the duct body 1 by welding to ensure that it will not be displaced during the operation of the fan. The fixed connecting plate 2 is externally connected to the inside of the duct body 1. A drive assembly is fixedly connected inside the fixed connecting plate 2. The drive assembly includes a first motor 3, which can provide driving force for the rotation of the fan. The first motor 3 is externally fixedly connected to the inside of the fixed connecting plate 2. A first rotating connecting shaft 4 is fixedly connected to the drive end of the first motor 3. The first rotating connecting shaft 4 is cylindrical and can rotate at high speed under the drive of the first motor 3. Its rotation speed can be precisely controlled by the first motor 3 according to the working requirements of the fan. The first rotating connecting shaft 4 is externally fixedly connected to the outside of the protective shell 5.

[0038] The drive assembly is fixedly connected to a protective housing 5. The protective housing 5 is cylindrical, lightweight, high-strength, and provides excellent protection, effectively protecting the internal power assembly from external interference. Inside the protective housing 5, a power assembly is fixedly connected, including a second motor 6, which provides rotational force to the second rotary connecting shaft 7. The second motor 6 is externally fixedly connected inside the protective housing 5. The drive end of the second motor 6 is fixedly connected to the second rotary connecting shaft 7, which is cylindrical and rotates at high speed under the drive of the second motor 6. The external part of the second rotary connecting shaft 7 is fixedly connected to the outside of a first bevel gear 8. The power assembly is fixedly connected to the first bevel gear 8, which is conical. Its external part meshes with the external part of the second bevel gear 9, transmitting rotational force. The outer surface of the first bevel gear 8 is meshed with the outer surface of the second bevel gear 9. The outer surface of the second bevel gear 9 is rotatably connected to the inside of the protective housing 5. Multiple rotating connecting columns 10 are rotatably connected inside the protective housing 5. One end of the rotating connecting column 10 is fixedly connected to the second bevel gear 9, which is also conical. The outer surface of the second bevel gear 9 is rotatably connected to the inside of the protective housing 5 through a bearing, so that the second bevel gear 9 can rotate flexibly under the drive of the first bevel gear 8. The other end of the rotating connecting column 10 is fixedly connected to a blade 11, which is arc-shaped. When the second motor 6 starts and drives the second rotating connecting shaft 7 and the first bevel gear 8 to rotate, the first bevel gear 8 will drive the second bevel gear 9 to rotate through meshing, thereby driving the rotating connecting column 10 and the blade 11 fixed at its end to rotate and adjust the angle of the blade 11.

[0039] Example 2

[0040] like Figure 3and Figure 4 As shown, connecting shells 12 are fixedly connected to both the left and right ends of the pipe body 1. The connecting shells 12 are cylindrical and are used to connect the pipe body 1 and provide installation space for the internal noise reduction mechanism. The noise reduction mechanism is fixedly connected inside the connecting shells 12. The noise reduction mechanism includes a sponge sound-absorbing layer 13, which is cylindrical and made of high-density sponge material. This sponge has a rich pore structure, which can effectively absorb the noise waves generated during the operation of the fan. The outside of the sponge sound-absorbing layer 13 is fixedly connected to the outside of the sound insulation material layer 14. The external fixed connection is to the outside of the insulating plate 15, the external fixed connection of the sponge sound-absorbing layer 13 is to the inside of the connecting shell 12, and the internal fixed connection of the connecting shell 12 is to the sound insulation material layer 14. The sound insulation material layer 14 is also cylindrical and made of rubber material with excellent sound insulation performance, which can further block the transmission of noise. The internal fixed connection of the connecting shell 12 is to the insulating plate 15. The insulating plate 15 is a circular thin plate and is made of stainless steel. Its surface is evenly distributed with tiny holes, which can effectively isolate the leakage of noise without affecting the air circulation.

[0041] A noise reduction component is fixedly connected to the bottom of the pipe body 1. The noise reduction component includes an arc-shaped connecting plate 16, which is an arc-shaped sheet that matches the curvature of the bottom of the pipe body 1. The bottom of the arc-shaped connecting plate 16 is fixedly connected to the bottom of the pipe body 1. Multiple connecting telescopic columns 17 are fixedly connected to the bottom of the arc-shaped connecting plate 16. The connecting telescopic columns 17 are cylindrical, and connecting springs 18 are sleeved on the outside of the connecting telescopic columns 17. The connecting springs 18 are spiral-shaped and have good elastic recovery ability. When the fan vibrates during operation, the connecting springs 18 can recover through their own... The elastic deformation absorbs part of the vibration energy, and the connecting telescopic column 17 performs corresponding telescopic movements under the action of the connecting spring 18, thereby effectively reducing the vibration transmitted from the pipe body 1 to the ground and further reducing noise. One end of the connecting spring 18 is fixedly connected to the bottom of the arc-shaped connecting plate 16, and the other end of the connecting spring 18 is fixedly connected to the top of the U-shaped support column 19. The bottom of the connecting telescopic column 17 is fixedly connected to the U-shaped support column 19, which is U-shaped. The bottom of the connecting telescopic column 17 is firmly fixed to the U-shaped support column 19 by welding.

[0042] Work steps

[0043] First, the first motor 3 is started, and its drive end transmits power through the first rotating connecting shaft 4, causing the first rotating connecting shaft 4 to rotate at high speed, thereby enabling the fan to run at high speed. The first rotating connecting shaft 4 is connected to the protective housing 5, and the second motor 6 is fixed inside the protective housing 5. When the second motor 6 is started, its drive end drives the first bevel gear 8 to rotate through the second rotating connecting shaft 7. The first bevel gear 8 meshes with multiple second bevel gears 9, thereby transmitting the rotational force to the second bevel gears 9, causing them to rotate around their own axis. As the second bevel gears 9 rotate, the rotating connecting column 10 connected to it also rotates, thereby driving the blades 11 fixed at its end to adjust their angle. By adjusting the angle of the blades 11, the duct fan can adapt to different working environments and applications.

[0044] During the operation of the fan, the noise reduction mechanism inside the connecting shell 12 plays a role. The sponge sound-absorbing layer 13 effectively absorbs the noise sound waves generated by the fan, the sound insulation material layer 14 further blocks the transmission of noise, and the insulation plate 15 ensures that noise does not leak. In addition, the noise reduction component at the bottom absorbs vibration through the connecting telescopic column 17 and the connecting spring 18, reducing the impact on the ground and further reducing noise.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A small-bore multi-purpose duct fan comprising a duct body (1), characterized in that: The inside of the pipeline body (1) is fixedly connected with an adjusting mechanism, the left and right ends of the outside of the pipeline body (1) are fixedly connected with a connecting shell (12), and the inside of the connecting shell (12) is fixedly connected with a noise reduction mechanism. The adjusting mechanism comprises a fixed connection plate (2), the outside of the fixed connection plate (2) is connected to the inside of the pipeline body (1), the inside of the fixed connection plate (2) is fixedly connected with a driving assembly, the driving assembly is fixedly connected with a protection shell (5), the inside of the protection shell (5) is fixedly connected with a power assembly, the power assembly is fixedly connected with a first bevel gear (8), a plurality of rotating connection columns (10) are rotatably connected to the inside of the protection shell (5), one end of the rotating connection column (10) is fixedly connected with a second bevel gear (9), and the other end of the rotating connection column (10) is fixedly connected with a blade (11).

2. A small-bore multi-purpose duct fan according to claim 1, characterized in that: The noise reduction mechanism comprises a sponge sound absorption layer (13), the outside of the sponge sound absorption layer (13) is fixedly connected to the inside of the connecting shell (12), the inside of the connecting shell (12) is fixedly connected with a sound insulation material layer (14), the inside of the connecting shell (12) is fixedly connected with an isolation leakage plate (15), and the bottom of the pipeline body (1) is fixedly connected with a noise reduction assembly.

3. A small-bore multi-purpose duct fan according to claim 1, characterized in that: The driving assembly comprises a first motor (3), the outside of the first motor (3) is fixedly connected to the inside of the fixed connection plate (2), the driving end of the first motor (3) is fixedly connected with a first rotating connection shaft (4), and the outside of the first rotating connection shaft (4) is fixedly connected to the outside of the protection shell (5).

4. A small-bore multi-purpose duct fan according to claim 1, characterized in that: The power assembly comprises a second motor (6), the outside of the second motor (6) is fixedly connected to the inside of the protection shell (5), the driving end of the second motor (6) is fixedly connected with a second rotating connection shaft (7), and the outside of the second rotating connection shaft (7) is fixedly connected to the outside of the first bevel gear (8).

5. A small-bore multi-purpose duct fan according to claim 2, characterized in that: The noise reduction assembly comprises an arc-shaped connecting plate (16), the bottom of the arc-shaped connecting plate (16) is fixedly connected to the bottom of the pipeline body (1), the bottom of the arc-shaped connecting plate (16) is fixedly connected with a plurality of connecting telescopic columns (17), the outside of the connecting telescopic column (17) is sleeved with a connecting spring (18), and the bottom of the connecting telescopic column (17) is fixedly connected with a U-shaped support column (19).

6. A small-bore multi-purpose duct fan according to claim 1, characterized in that: The outside of the first bevel gear (8) is meshingly connected with the outside of the second bevel gear (9), and the outside of the second bevel gear (9) is rotatably connected to the inside of the protection shell (5).

7. A small-bore multi-purpose duct fan according to claim 5, characterized in that: One end of the connecting spring (18) is fixedly connected to the bottom of the arc-shaped connecting plate (16), and the other end of the connecting spring (18) is fixedly connected to the top of the U-shaped support column (19).

8. A small-bore multi-purpose duct fan according to claim 2, characterized in that: The outside of the sponge sound absorption layer (13) is fixedly connected to the outside of the sound insulation material layer (14), and the outside of the sound insulation material layer (14) is fixedly connected to the outside of the isolation leakage plate (15).

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