Vertical axial flow fan
By introducing a slidable sliding arc plate and fixed arc plate into the axial flow fan, the problem of inconvenient maintenance of existing axial flow fans is solved, convenient maintenance channels and replacement efficiency are improved, and the stability and noise reduction effect of the equipment are enhanced.
Patent Information
- Application Number
- CN202422380181.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-29
AI Technical Summary
The internal structure of the existing axial flow fan is fixed, which leads to inconvenience in repair and replacement, especially the difficulty of the tool to effectively penetrate into the casing, affecting maintenance efficiency.
A vertical axial flow fan is designed, which uses a slidable sliding arc plate and a fixed arc plate to achieve stable sliding of the sliding arc plate through bolt connection and magnetic strip adsorption, expand the maintenance space and provide convenient maintenance channels.
Through the design of the sliding arc plate, the maintenance space is expanded, and the tools are convenient for entering from multiple directions, which significantly improves the maintenance and replacement efficiency of the fan impeller and motor, and enhances the stability and noise reduction effect of the equipment.
Smart Images
Figure CN223075787U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of fans, and more specifically, it relates to a vertical axial flow fan. Background Art
[0002] Axial flow fans are very widely used. The air flow is in the same direction as the axis of the fan blades. The reason it is called "axial flow" is that the gas flows parallel to the fan axis. Axial flow fans are usually used in occasions where a higher flow rate and a lower pressure are required. Axial flow fans are fixed in position and move the air. An axial flow fan mainly consists of a fan impeller, a motor, and a casing. The fan impeller and the motor are both located inside the casing. The fan impeller includes a hub and several blades distributed circumferentially along the hub. The hub is arranged on the rotating shaft of the motor and drives the fan impeller through the motor.
[0003] Most of the internal structures of axial flow fans are fixedly arranged. When maintenance and replacement are required, tools need to be inserted into the casing for operation. The tools can only be inserted from both ends of the casing, and the internal space of the casing is relatively small, which is inconvenient for people to repair and affects the efficiency of maintenance and replacement.
[0004] Therefore, a new solution needs to be proposed to solve this problem. Content of the Utility Model
[0005] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a vertical axial flow fan.
[0006] The above technical purpose of the utility model is achieved through the following technical solutions: A vertical axial flow fan includes a machine body, and the machine body includes a casing and fixing rings welded to both ends of the casing. The casing includes a fixed arc plate and a sliding arc plate. A maintenance cavity is formed at the top of the fixed arc plate. The sliding arc plate is slidably connected to the outer wall of the fixed arc plate in the circumferential direction. The fixed arc plate and the sliding arc plate are fixed by bolts.
[0007] The utility model is further provided that: a trapezoidal arc strip is fixedly connected to the inner wall of the sliding arc plate, and a trapezoidal arc groove for the trapezoidal arc strip to slide is opened on the outer wall of the fixed arc plate.
[0008] The utility model is further provided that: through holes are opened on the sliding arc plate, threaded holes are opened on the fixed arc plate, and one end of the bolt passes through the through hole and is threadedly connected to the threaded hole to relatively fix the fixed arc plate and the sliding arc plate.
[0009] The utility model is further provided that: damping pads are fixedly embedded on the outer walls at both ends of the top of the fixed arc plate, and connection holes for one end of the bolt to pass through are opened on the damping pads.
[0010] The present utility model is further configured such that: magnetic strips I are fixedly embedded on the outer walls at both ends of the top of the fixed arc plate, and magnetic strips II for adsorbing to the magnetic strips I are fixedly embedded on the inner walls at both ends of the bottom of the sliding arc plate.
[0011] The present utility model is further configured such that: support feet are welded to the bottom of the fixed ring.
[0012] The present utility model is further configured such that: the fixed ring, the fixed arc plate, and the sliding arc plate are all made of stainless steel.
[0013] In summary, the present utility model has the following beneficial effects: the fan impeller and the motor are both located in the maintenance cavity of the fixed arc plate. When the fan impeller and the motor are operating, at this time, the horizontal height of the sliding arc plate is greater than that of the fixed arc plate and the two are relatively fixed by bolts. At this time, the sliding arc plate is arranged close to the ground and the maintenance cavity is covered by the sliding arc plate. When the fan impeller and the motor need to be maintained, by sliding the sliding arc plate, the sliding arc plate slides on the outer wall of the fixed arc plate in the direction close to the ground. At this time, the maintenance cavity, the fan impeller, and the motor on the fixed arc plate are gradually exposed outside, and the sliding arc plate slides to the outer wall of the fixed arc plate. At this time, the sliding arc plate is arranged close to the ground, so that the maintenance personnel only need to insert the tool into the maintenance cavity, which is convenient for maintaining the fan impeller and the motor and improves the inspection and replacement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is a schematic structural view of the present utility model;
[0015] Figure 2 is a sectional view of the sliding arc plate and the fixed arc plate in the present utility model;
[0016] Figure 3 is an exploded view of the sliding arc plate and the fixed arc plate in the present utility model;
[0017] Figure 4 is a schematic structural view of the present utility model when the sliding arc plate is arranged facing the ground and the maintenance cavity is exposed outside.
[0018] In the figure: 11, housing; 111, fixed arc plate; 112, sliding arc plate; 12, fixed ring; 2, maintenance cavity; 3, trapezoidal arc strip; 4, trapezoidal arc groove; 5, bolt; 6, through hole; 7, threaded hole; 8, damping pad; 9, magnetic strip I; 10, magnetic strip II. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0019] The present utility model will be described in detail below with reference to the drawings and embodiments. Embodiment
[0020] Vertical axial flow fan, such as Figures 1 to 4As shown in the figure, it includes a body, which includes a casing 11 and fixing rings 12 welded to both ends of the casing 11. The body also includes a fan impeller and a motor. The casing 11 includes a fixed arc plate 111 and a sliding arc plate 112. The fixing rings 12, the fixed arc plate 111 and the sliding arc plate 112 are all made of stainless steel. A support foot is welded to the bottom of the fixing ring 12. The motor is installed on the arc surface of the fixed arc plate 111. A maintenance cavity 2 is formed at the top of the fixed arc plate 111. Both the fan impeller and the motor are located in the maintenance cavity 2 on the fixed arc plate 111. The inner diameter of the sliding arc plate 112 is equal to the outer diameter of the fixed arc plate 111. The sliding arc plate 112 is slidably connected to the outer wall of the fixed arc plate 111 in the circumferential direction. The fixed arc plate 111 is welded between the two fixing rings 12. The fixed arc plate 111 and the sliding arc plate 112 are fixed by bolts 5. A trapezoidal arc strip 3 is adhesively bonded to the inner wall of the sliding arc plate 112. A trapezoidal arc groove 4 for the sliding of the trapezoidal arc strip 3 is provided on the outer wall of the fixed arc plate 111. Both the fan impeller and the motor are located in the maintenance cavity 2 of the fixed arc plate 111. When the fan impeller and the motor are running, at this time, the sliding arc plate 112 is located above the fixed arc plate 111 and is installed by bolts 5. When the fan impeller and the motor need to be maintained, the sliding arc plate 112 is slid downward toward the fixed arc plate 111. At this time, the trapezoidal arc strip 3 slides in the trapezoidal arc groove 4 on the outer wall of the fixed arc plate 111, and the maintenance cavity 2, the fan impeller and the motor on the fixed arc plate 111 are gradually exposed outside, and the sliding arc plate 112 slides to the outer wall of the fixed arc plate 111. Because the cross-section of the trapezoidal arc strip 3 is trapezoidal, when the sliding arc plate 112 slides to the outer wall of the fixed arc plate 111, it prevents the sliding arc plate 112 from detaching from the fixed arc plate 111, improving the stability of the sliding arc plate 112 when sliding on the fixed arc plate 111. At this time, the sliding arc plate 112 is close to the ground, enabling the maintenance personnel to reach in not only from both ends of the casing 11, but also from above through the maintenance cavity 2. And the maintenance space is increased through the maintenance cavity 2, facilitating the maintenance of the fan impeller and the motor, improving the inspection and replacement efficiency. The stainless steel material has high strength and hardness, increasing the service life of the fixed arc plate 111 and the sliding arc plate 112.
[0021] As Figures 1 to 4As shown, a through hole 6 is formed in the sliding arc plate 112, and a threaded hole 7 is formed in the fixed arc plate 111. One end of a bolt 5 passes through the through hole 6 and is threadedly connected to the threaded hole 7 to relatively fix the fixed arc plate 111 and the sliding arc plate 112. When the fan impeller and the motor are operating, at this time, the horizontal height of the sliding arc plate 112 is greater than that of the fixed arc plate 111, and the sliding arc plate 112 covers the maintenance cavity 2. The bolt 5 passes through the through hole 6 and is threadedly connected to the threaded hole 7 to relatively fix the sliding arc plate 112 and the fixed arc plate 111, ensuring the stability between the sliding arc plate 112 and the fixed arc plate 111. When the fan impeller and the motor need to be repaired, first disassemble the bolt 5 so that it separates from the threaded hole 7 and the through hole 6 respectively, and then the sliding arc plate 112 can be slid on the fixed arc plate 111 in the direction close to the ground. At this time, the trapezoidal arc strip 3 slides in the trapezoidal arc groove 4, and the sliding arc plate 112 is arranged facing close to the ground.
[0022] As Figures 1 to 4 shown, damping pads 8 are embedded and bonded to the outer walls at both ends of the top of the fixed arc plate 111, and connection holes for one end of the bolt 5 to pass through are formed in the damping pads 8. When the sliding arc plate 112 is located above the fixed arc plate 111, at this time, the damping pads 8 are in contact with the inner wall of the sliding arc plate 112, and one end of the bolt 5 passes through the through hole 6 and the connection hole in sequence and is threadedly connected to the threaded hole 7. When the motor and the fan impeller are operating, the vibration between the fixed arc plate 111 and the sliding arc plate 112 is reduced through the damping pads 8 and a noise reduction effect is achieved.
[0023] As Figures 1 to 4 shown, magnetic strips one 9 are embedded and bonded to the outer walls at both ends of the top of the fixed arc plate 111, and magnetic strips two 10 for adsorbing to the magnetic strips one 9 are embedded and bonded to the inner walls at both ends of the bottom of the sliding arc plate 112. When the fan impeller and the motor are operating, at this time, the horizontal height of the sliding arc plate 112 is greater than that of the fixed arc plate 111. The bolt 5 passes through the through hole 6 and is threadedly connected to the threaded hole 7 to relatively fix the sliding arc plate 112 and the fixed arc plate 111. At this time, the magnetic strips one 9 and the magnetic strips two 10 adsorb to each other, and the through hole 6 and the threaded hole 7 are aligned, which is convenient for positioning the through hole 6 and the threaded hole 7. When the fan impeller and the motor need to be repaired, the sliding arc plate 112 is slid on the fixed arc plate 111 in the direction close to the ground. At this time, the trapezoidal arc strip 3 slides in the trapezoidal arc groove 4, and the magnetic strip two 10 is driven to slide when the sliding arc plate 112 slides, so that the magnetic strips one 9 and the magnetic strips two 10 do not adsorb to each other, enabling the sliding arc plate 112 to continue sliding on the outer wall of the fixed arc plate 111.
[0024] The above are only the preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions falling within the concept of the present utility model belong to the protection scope of the present utility model. It should be pointed out that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present utility model should also be regarded as within the protection scope of the present utility model.
Claims
1. Vertical axial flow fan, comprising a body, characterized in that: The body includes a casing (11) and fixing rings (12) welded to both ends of the casing (11). The casing (11) includes a fixed arc plate (111) and a sliding arc plate (112). A maintenance cavity (2) is formed at the top of the fixed arc plate (111). The sliding arc plate (112) is slidably connected to the outer wall of the fixed arc plate (111) in the circumferential direction. The fixed arc plate (111) is welded between the two fixing rings (12). The fixed arc plate (111) and the sliding arc plate (112) are fixed by bolts (5).
2. The vertical axial flow fan according to claim 1, wherein: A trapezoidal arc strip (3) is fixedly connected to the inner wall of the sliding arc plate (112). A trapezoidal arc groove (4) for the trapezoidal arc strip (3) to slide is formed on the outer wall of the fixed arc plate (111).
3. The vertical axial-flow fan according to claim 1, characterized in that: A through hole (6) is formed in the sliding arc plate (112), and a threaded hole (7) is formed in the fixed arc plate (111). One end of the bolt (5) passes through the through hole (6) and is threadedly connected to the threaded hole (7) to relatively fix the fixed arc plate (111) and the sliding arc plate (112).
4. The vertical axial flow fan according to claim 3, characterized in that: Vibration damping pads (8) are embedded and fixed on the outer walls at both ends of the top of the fixed arc plate (111), and connection holes for one end of the bolt (5) to pass through are formed in the vibration damping pads (8).
5. The vertical axial-flow fan according to claim 1, characterized in that: Magnetic strips one (9) are embedded and fixed on the outer walls at both ends of the top of the fixed arc plate (111), and magnetic strips two (10) for adsorbing to the magnetic strips one (9) are embedded and fixed on the inner walls at both ends of the bottom of the sliding arc plate (112).
6. The vertical axial flow fan according to claim 1, characterized in that: Support feet are welded to the bottom of the fixing ring (12).
7. The vertical axial flow fan according to claim 1, characterized in that: The fixing ring (12), the fixed arc plate (111), and the sliding arc plate (112) are all made of stainless steel.