An axial flow fan

Abstract

The utility model belongs to axial flow fan technical field, concretely relates to an axial flow fan, including cylinder shell, the motor is installed in the cylinder shell inside, the output shaft of motor is connected with the fan blade, the base is provided with below the cylinder shell, the mounting bracket is fixed in the left and right sides of base, the pivot is fixed in the both ends of cylinder shell, the mounting bracket is rotatory installation through the pivot with the mounting bracket, the angle adjusting assembly is provided with in the front and back sides of mounting bracket, through setting angle adjusting assembly and pull member, the operator can conveniently and quickly adjust the angle of cylinder shell to change the air outlet direction of fan, satisfy the ventilation demand under different working environment, do not need to the overall dismounting and reinstallation of fan, improve work efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of axial flow fan technology, and specifically relates to an axial flow fan. Background Technology

[0002] Axial flow fans, as an important type of ventilation equipment, have wide and crucial applications in many fields such as industrial production, building ventilation, agricultural planting, and mine ventilation. Their working principle involves a motor driving the fan blades to rotate, causing air to flow axially, thereby achieving ventilation.

[0003] In existing axial flow fan technology, most fans have a fixed airflow direction. Once installed, the airflow angle is difficult to adjust flexibly according to changes in actual usage scenarios. For example, in some large factories, different production areas may have different requirements for ventilation direction and airflow. With adjustments to the production layout or seasonal changes, the original fixed airflow direction may no longer meet new ventilation needs. Adjusting the airflow angle of a traditional axial flow fan usually requires disassembling the entire fan, reinstalling and repositioning it. This is not only cumbersome and time-consuming, but also requires specialized personnel and tools, significantly increasing operating costs and maintenance difficulty, and seriously affecting work efficiency. Utility Model Content

[0004] The purpose of this invention is to provide an axial flow fan to solve the problems mentioned in the background art.

[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows: An axial flow fan includes a cylindrical shell, a motor installed inside the cylindrical shell, a fan blade connected to the output shaft of the motor, a base provided below the cylindrical shell, mounting brackets fixed on both sides of the base, and rotating shafts fixed at both ends of the cylindrical shell. The cylindrical shell is rotatably mounted to the mounting brackets via the rotating shafts. Angle adjustment components are provided on both the front and rear sides of the mounting bracket. The angle adjustment components include a circular groove opened in the mounting bracket, a rotating shaft extending into the circular groove and connected to a gear, a rectangular groove opened on the upper side of the circular groove, an arc-shaped locking tooth matching the gear slidingly in the rectangular groove, a spring between the upper side of the arc-shaped locking tooth and the upper wall of the rectangular groove, and a pulling member provided on both the front and rear arc-shaped locking teeth.

[0006] The pulling component includes a slide rod fixed to the upper end of the arc-shaped locking tooth, the upper end of the slide rod sliding out of the rectangular groove, and the upper ends of the two slide rods are connected to an arc-shaped pulling rod.

[0007] A soft pad is provided in the middle of the arc-shaped pull rod.

[0008] The cylindrical shell is secured with protective covers at both the front and rear ends by bolts.

[0009] A stabilizing base is provided below the mounting frame, and a shock absorber is provided between the mounting frame and the stabilizing base.

[0010] This invention, by setting up an angle adjustment component and a pulling part, allows operators to easily and quickly adjust the angle of the cylindrical shell, thereby changing the air outlet direction of the fan and meeting the ventilation needs of different working environments. It eliminates the need for complete disassembly and reinstallation of the fan, thus improving work efficiency. Attached Figure Description

[0011] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings.

[0012] Figure 1 This is a schematic diagram of an embodiment of an axial flow fan according to the present invention; Figure 2 This is a cross-sectional structural schematic diagram of an embodiment of an axial flow fan according to the present invention; Figure 3 for Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0013] The symbols for the main components are explained below: 1. Cylindrical shell, 11. Fan blade, 2. Base, 21. Mounting bracket, 22. Circular groove, 23. Gear, 24. Rectangular groove, 25. Arc-shaped locking tooth, 26. Spring, 27. Slide rod, 28. Arc-shaped pull rod, 28. Soft pad, 281. Protective cover, 3. Stable seat, 4. Shock absorber, 41. Detailed Implementation

[0014] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0015] like Figure 1-3 As shown, the axial flow fan of this invention includes components such as a cylindrical shell 1, a motor, a fan blade 11, a base 2, a mounting bracket 21, an angle adjustment assembly, a pulling component, a protective cover 3, and a shock absorber 41.

[0016] Cylindrical shell 1, motor, and fan blade 11 The cylindrical shell 1 is the main outer casing of the fan and is cylindrical in shape. A motor is installed inside the cylindrical shell 1, and the output shaft of the motor is connected to the fan blades 11. The motor drives the fan blades 11 to rotate, thereby achieving the function of ventilation.

[0017] Base 2 and mounting bracket 21 A base 2 is provided below the cylindrical shell 1, and mounting brackets 21 are fixed on both the left and right sides of the base 2. A rotating shaft is fixed at both ends of the cylindrical shell 1. The cylindrical shell 1 is rotatably mounted to the mounting brackets 21 through the rotating shaft, so that the cylindrical shell 1 can rotate around the rotating shaft, providing a basis for subsequent angle adjustment.

[0018] Angle adjustment component Angle adjustment components are provided on both the front and rear sides of the mounting bracket 21. Each angle adjustment component includes a circular groove 22 on the mounting bracket 21, into which a rotating shaft extends and connects to a gear 23. A rectangular groove 24 is formed on the upper side of the circular groove 22, and an arc-shaped locking tooth 25 matching the gear 23 slides within the rectangular groove 24. A spring 26 is provided between the upper side of the arc-shaped locking tooth 25 and the upper wall of the rectangular groove 24. Under normal conditions, the spring force of the spring 26 engages the arc-shaped locking tooth 25 with the gear 23, thereby fixing the angle of the cylindrical shell 1. When angle adjustment is required, the arc-shaped locking tooth 25 slides upward by a pulling member, disengaging from the gear 23. At this time, the cylindrical shell 1 can rotate around the rotating shaft. After rotating to the desired angle, the pulling member is released, and the arc-shaped locking tooth 25 re-engages with the gear 23 under the action of the spring 26, fixing the angle of the cylindrical shell 1.

[0019] Pull component The pulling component includes a slide rod 27 fixed to the upper end of the arc-shaped locking tooth 25. The upper end of the slide rod 27 slides out of the rectangular groove 24, and the upper ends of the two slide rods 27 are connected to an arc-shaped pulling rod 28. By pulling the arc-shaped pulling rod 28, the two slide rods 27 can be moved upward simultaneously, thereby disengaging the arc-shaped locking tooth 25 from the gear 23, facilitating angle adjustment.

[0020] A soft pad 281 is provided in the middle of the arc-shaped pull rod 28, which can improve the comfort of the operator when pulling the arc-shaped pull rod 28.

[0021] Protective shield 3 The cylindrical shell 1 is secured to protective covers 3 by bolts at both ends. The protective covers 3 prevent external objects from entering the interior of the cylindrical shell 1, thus avoiding damage to components such as the fan blades 11 and the motor, and providing protection.

[0022] Shock absorber 41 A stabilizing seat 4 is provided below the base 2, and a shock absorber 41 is provided between the base 2 and the stabilizing seat 4. The shock absorber 41 can effectively absorb the vibration generated during the operation of the fan, reduce the impact of vibration on the fan itself and the surrounding environment, and improve the operational stability and service life of the fan.

[0023] By setting up angle adjustment components and pulling parts, operators can easily and quickly adjust the angle of the cylindrical shell 1, thereby changing the air outlet direction of the fan to meet the ventilation needs of different working environments. This eliminates the need for complete disassembly and reinstallation of the fan, thus improving work efficiency.

[0024] Protective covers 3 are installed at both ends of the cylindrical shell 1 to effectively prevent external objects from entering the fan, protect the fan blades 11 and key components such as the motor from damage, and extend the service life of the equipment.

[0025] A shock absorber 41 is installed between the mounting frame 21 and the stable base 4, which can absorb the vibration generated during the operation of the fan, reduce the impact of vibration on the fan and the surrounding environment, reduce noise, and improve the operational stability and reliability of the equipment.

[0026] Comfortable operation: A soft pad 281 is set in the middle of the arc-shaped pull rod 28, which improves the comfort of the operator when pulling the arc-shaped pull rod 28 and makes the angle adjustment operation more user-friendly.

[0027] When adjusting the outlet angle of the axial flow fan, the operator holds the soft pad 281 in the middle of the arc-shaped pull rod 28 and pulls the arc-shaped pull rod 28 upward. Since the arc-shaped pull rod 28 is connected to the two sliding rods 27, the sliding rods 27 will slide upward with the arc-shaped pull rod 28, thereby driving the arc-shaped locking tooth 25 to move upward within the rectangular groove 24, causing the arc-shaped locking tooth 25 to disengage from the gear 23. At this time, the cylindrical shell 1 can rotate freely around the axis of rotation, and the operator can rotate the cylindrical shell 1 to the required angle according to actual needs. After the angle is adjusted to the correct position, the arc-shaped pull rod 28 is released, and the arc-shaped locking tooth 25 moves downward again under the elastic force of the spring 26, re-engaging with the gear 23, thereby fixing the angle of the cylindrical shell 1 and completing the angle adjustment operation.

[0028] When installing the axial flow fan, the protective cover 3 is fixed to the front and rear ends of the cylindrical shell 1 with bolts. The installation of the protective cover 3 can effectively prevent external objects from entering the interior of the cylindrical shell 1, protecting the fan blades 11 and motor and other components from damage. When disassembling or replacing the protective cover 3, simply loosen the bolts to remove it, making the operation convenient and quick.

[0029] A vibration damper 41 is installed between the base 2 and the stable seat 4. The vibration damper 41 can be a common type such as a spring vibration damper or a rubber vibration damper. When the axial flow fan is running, the motor drives the fan blades 11 to rotate, generating vibrations that are transmitted to the mounting bracket 21 and the base 2. The vibration damper 41 absorbs and dissipates vibration energy through its own elastic deformation, reducing the impact of vibration on the stable seat 4 and the surrounding environment, thereby reducing noise and improving the fan's operational stability and service life.

[0030] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. An axial flow fan, comprising a cylindrical shell, wherein a motor is installed inside the cylindrical shell, and the output shaft of the motor is connected to fan blades, characterized in that: A base is provided below the cylindrical shell, and mounting brackets are fixed on both the left and right sides of the base. Rotating shafts are fixed at both ends of the cylindrical shell, and the cylindrical shell is rotatably mounted to the mounting brackets via the rotating shafts. Angle adjustment components are provided on both the front and rear sides of the mounting bracket. The angle adjustment components include a circular groove opened in the mounting bracket, a rotating shaft extending into the circular groove and connected to a gear, a rectangular groove opened on the upper side of the circular groove, an arc-shaped locking tooth matching the gear slidingly in the rectangular groove, a spring between the upper side of the arc-shaped locking tooth and the upper wall of the rectangular groove, and a pulling member provided on both the front and rear arc-shaped locking teeth.

2. An axial flow fan according to claim 1, characterized in that: The pulling component includes a slide rod fixed to the upper end of the arc-shaped locking tooth, the upper end of the slide rod sliding out of the rectangular groove, and the upper ends of the two slide rods are connected to an arc-shaped pulling rod.

3. An axial flow fan according to claim 2, characterized in that: A soft pad is provided in the middle of the arc-shaped pull rod.

4. An axial flow fan according to claim 1, characterized in that: The cylindrical shell is secured with protective covers at both the front and rear ends by bolts.

5. An axial flow fan according to claim 1, characterized in that: A stabilizing base is provided below the mounting frame, and a shock absorber is provided between the mounting frame and the stabilizing base.

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