Axial flow fan convenient to disassemble and maintain

Abstract

The utility model relates to the technical field of fan maintenance, and discloses an axial flow fan convenient to disassemble and maintain, which comprises a centrifugal fan, the bottom end of the centrifugal fan is fixedly connected with two support frames, the bottom end of the right side of the centrifugal fan is fixedly connected with a support inclined plate, the right side of the centrifugal fan is fixedly connected with a motor, and the motor is fixedly connected with the support inclined plate. A plurality of fixing rods are fixedly connected into the supporting frame, a baffle is fixedly connected to the top ends of the fixing rods, a threaded block is in threaded connection with the interior of the baffle, a control assembly convenient to screw is fixedly connected to the top end of the threaded block, and a limiting rod is fixedly connected to the bottom end of the threaded block. The outer portion of the limiting rod is fixedly connected with a limiting disc, and the outer portion of the limiting rod is sleeved with a strong spring. According to the fan, the limiting rod is screwed, so that the clamping ball can naturally fall into the fixing rod from the movable hole, the preparation time for disassembling the fan is shortened, and the maintenance work efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of fan maintenance technology, and in particular to an axial flow fan that is easy to disassemble and maintain. Background Technology

[0002] Axial flow fans are common ventilation devices where airflow moves axially. When a motor drives the impeller to rotate, the blades on the impeller exert a force on the air. Air on one side of the blades is accelerated and its pressure decreases, while air on the other side is pushed towards the outlet. Due to the rotation of the blades, air is continuously drawn in and expelled axially, thus achieving ventilation. In industrial plants, production processes generate a large amount of dust and impurities. This dust and impurities are easily drawn into the axial flow fan and adhere to components such as the impeller and casing. Over time, this increases the weight of the impeller and rotational resistance, reducing the fan's efficiency. Therefore, it is necessary to disassemble and maintain the fan to ensure its normal operation.

[0003] In the prior art, some fans usually need to be removed from the carrier before the casing can be disassembled. This requires workers to use tools to loosen the bolts and nuts to remove the fasteners between the fan and the carrier before it can be removed and the subsequent operations can be completed. However, this is not only cumbersome, but also time-consuming and labor-intensive, reducing the overall work efficiency. Therefore, in order to address the above shortcomings, an axial flow fan that is easy to disassemble and maintain is proposed. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an axial flow fan that is easy to disassemble and maintain. This aims to improve the problem that disassembling the fan in existing technologies is not only cumbersome and time-consuming, but also reduces work efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An axial flow fan that is easy to disassemble and maintain includes a centrifugal fan. Two support frames are fixedly connected to the bottom of the centrifugal fan. A support inclined plate is fixedly connected to the right bottom of the centrifugal fan. A motor is fixedly connected to the right side of the centrifugal fan. Multiple fixing rods are fixedly connected inside the support frames. A baffle is fixedly connected to the top of each fixing rod. A threaded block is threaded inside the baffle. A control component for easy turning is fixedly connected to the top of the threaded block. A limit rod is fixedly connected to the bottom of the threaded block. A limit disc is fixedly connected to the outside of the limit rod. A strong spring is sleeved on the outside of the limit rod. Two movable holes are opened on the outside of the fixing rod. A locking ball is movably connected inside the movable holes. A connecting frame is fixedly connected to the front end of the centrifugal fan. The connecting frame is connected to a ventilation duct via a locking component.

[0007] Specifically, the two support frames at the bottom of the centrifugal fan and the support ramp at the bottom right side provide stable support, while the motor on the right side provides power for the fan's operation. Multiple fixed rods inside the support frames are connected to baffles at their tops. The threaded blocks connected to the baffles have control components at their tops that are easy to turn. The limit rods connected at the bottom and their external limit discs, along with the sleeved strong springs, cooperate with the locking balls in the movable holes on the fixed rods to achieve connection and disassembly control of key parts of the fan. The connecting frame at the front of the centrifugal fan is connected to the ventilation pipe through a locking component to ensure reliable connection of the ventilation pipe.

[0008] Furthermore, the front side of the connecting frame has an internal receiving hole, and multiple telescopic rods are fixedly connected to the rear end of the internal receiving hole. A telescopic spring is sleeved on the outside of the telescopic rods. A limit frame is fixedly connected to the front end of the multiple telescopic rods. A moving ring is fixedly connected to the front side of the limit frame, and a stationary ring is fixedly connected to the rear side of the ventilation pipe.

[0009] Specifically, the front side of the connecting frame has a receiving hole inside. Multiple telescopic rods fixed at the rear end inside the receiving hole are fitted with telescopic springs. The front ends of these telescopic rods are connected to a limiting frame. The moving ring fixed at the front of the limiting frame cooperates with the stationary ring fixed at the rear of the ventilation pipe. Through the action of the telescopic rods and the telescopic springs, the moving ring and the stationary ring are tightly fitted to ensure the sealing of the connection between the fan and the ventilation pipe.

[0010] Furthermore, a fan blade is fixedly connected to the drive end of the motor, and the external part of the fan blade is rotatably connected to the inside of the centrifugal fan;

[0011] Specifically, the motor has a fan blade fixed to its drive end. When the motor is running, it can drive the fan blade to rotate. The fan blade rotates inside the centrifugal fan, thereby causing the air to flow axially inside the centrifugal fan and achieving the function of ventilation.

[0012] Furthermore, the bottom end of the supporting inclined plate is fixedly connected to the top end of the fixed rod, and the bottom end of the baffle is fixedly connected to the top end of the support frame;

[0013] Specifically, the bottom end of the support ramp is fixedly connected to the top end of the fixed rod. Through this connection method, the support ramp can transfer the weight of the right side of the centrifugal fan to the fixed rod, and then distribute it to the support frame, thus playing a role in assisting to support the centrifugal fan. The bottom end of the baffle is fixedly connected to the top end of the support frame, which makes the baffle firmly installed on the support frame, providing a stable installation base for its internal threaded blocks and other components.

[0014] Furthermore, the control component includes a screwing block, the bottom end of which is fixedly connected to the top end of the threaded block, and two handles are fixedly connected to the outside of the screwing block;

[0015] Specifically, the bottom end of the screwing block in the control component is fixedly connected to the top end of the threaded block. By rotating the screwing block, the threaded block can be driven to rotate. Two handles fixedly connected to the outside of the screwing block make it easier for the operator to apply force, making the screwing operation easier and more convenient, and facilitating the operation of the threaded block.

[0016] Furthermore, a sliding hole is provided inside the fixing rod, the outside of the limiting plate is slidably connected to the inside of the sliding hole, the top end of the strong spring is fixedly connected to the bottom end of the limiting plate, and the bottom end of the strong spring is fixedly connected to the bottom end inside the sliding hole.

[0017] Specifically, the sliding hole inside the fixed rod provides sliding space for the limiting plate, allowing the limiting plate to slide smoothly within the sliding hole; the top of the strong spring is fixed to the bottom of the limiting plate, and the bottom is fixed to the bottom of the sliding hole. When the limiting rod moves, the limiting plate will move accordingly within the sliding hole, thereby allowing the strong spring to extend and retract according to the movement of the limiting rod, thus playing a role in assisting in controlling the position of the limiting rod.

[0018] Furthermore, the outer bottom end of the limiting rod contacts the outside of the engaging ball, and the bottom end of the limiting rod and the inner bottom end of the fixing rod are both arc-shaped;

[0019] Specifically, the outer bottom end of the limiting rod contacts the outer side of the locking ball, so that when the limiting rod is at its lowest position, it limits the locking ball. The bottom end of the limiting rod and the inner bottom end of the fixing rod are both arc-shaped. This arc design allows the limiting rod to interact more smoothly with the locking ball and the inner bottom surface of the fixing rod during movement, avoiding jamming.

[0020] Furthermore, the locking assembly includes multiple bolts, and multiple threaded holes are provided on the left side of the connecting frame. The external threads of the bolts are connected to the inside of the threaded holes, and the external threads of the multiple bolts are respectively connected to the inside of the four corners of the ventilation pipe.

[0021] Specifically, the locking assembly includes multiple bolts used to securely connect the connecting frame and the ventilation duct. Multiple threaded holes are provided on the left side of the connecting frame, providing locations for the bolts to be threaded into. The bolts are screwed into these threaded holes to connect with the connecting frame. Furthermore, multiple bolts are also screwed into the four corners of the ventilation duct. This multi-point connection method ensures a firm and stable connection between the connecting frame and the ventilation duct, preventing loosening or detachment during use.

[0022] Furthermore, the outer side of the limiting frame is slidably connected to the inside of the receiving hole, and one side of the moving ring is in contact with one side of the stationary ring;

[0023] Specifically, the external sliding connection of the limiting frame is inside the receiving hole. This sliding connection allows the limiting frame to move smoothly back and forth within the receiving hole. The moving ring side is in contact with the stationary ring side, which prevents air leakage from the connection gap during fan operation and ensures the sealing of the connection between the fan and the ventilation pipe.

[0024] This utility model has the following beneficial effects:

[0025] 1. In this utility model, the locking ball passes through the movable hole under the squeezing action of the limiting rod, and then engages with the locking hole inside the shelf, realizing a stable connection between the fan and the shelf. By twisting the limiting rod, the limiting rod moves upward, causing the limiting rod to eliminate the limitation on the locking ball, allowing the locking ball to fall naturally from the movable hole into the interior of the fixed rod, completing the separation of the fan and the shelf, shortening the preparation time for fan disassembly, and improving maintenance efficiency.

[0026] 2. In this utility model, when the fan ventilation hole is connected to the ventilation pipe, the force of the spring makes the moving ring and the stationary ring fit tightly together, which can prevent air from leaking from the connection gap and ensure that all the air delivered by the fan reaches the predetermined location through the ventilation pipe, thus avoiding poor ventilation effect due to air leakage. Attached Figure Description

[0027] Figure 1 This is a perspective view of an axial flow fan that is easy to disassemble and maintain, as proposed in this utility model.

[0028] Figure 2 This is a schematic diagram of a support frame structure for an axial flow fan that is easy to disassemble and maintain, as proposed in this utility model.

[0029] Figure 3 for Figure 2 Enlarged view of point A in the image;

[0030] Figure 4 This is a schematic diagram of the ventilation duct structure of an axial flow fan that is easy to disassemble and maintain, as proposed in this utility model.

[0031] Figure 5 for Figure 4 Enlarged view of point B in the image.

[0032] Legend:

[0033] 1. Centrifugal fan; 2. Support frame; 3. Supporting inclined plate; 4. Motor; 5. Fixed rod; 6. Baffle; 7. Threaded block; 8. Tightening block; 9. Handle; 10. Limiting rod; 11. Limiting plate; 12. Strong spring; 13. Sliding hole; 14. Movable hole; 15. Engaging ball; 16. Connecting frame; 17. Ventilation pipe; 18. Threaded hole; 19. Bolt; 20. Receiving hole; 21. Telescopic rod; 22. Telescopic spring; 23. Limiting frame; 24. Moving ring; 25. Stationary ring. Detailed Implementation

[0034] 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.

[0035] Reference Figures 1 to 3 This utility model provides an embodiment of an axial flow fan that is easy to disassemble and maintain, including a centrifugal fan 1. The centrifugal fan 1 is the core part of the entire fan, housing the key working components and serving as the spatial carrier for airflow. Two support frames 2 are fixedly connected to the bottom of the centrifugal fan 1. These support frames 2 act as sturdy pillars, steadily supporting the entire fan from the bottom. They evenly distribute the weight of the centrifugal fan 1, ensuring stability during operation and preventing swaying or displacement due to unstable support, thus guaranteeing normal operation and service life. A support inclined plate 3 is fixedly connected to the bottom right side of the centrifugal fan 1. The support inclined plate 3 provides auxiliary support, working in conjunction with the support frames 2 to further enhance the support strength on the right side of the centrifugal fan 1, preventing deformation or damage due to excessive force on the right side. A motor 4 is also fixedly connected to the right side of the centrifugal fan 1.

[0036] Motor 4 is the power source for the fan. Through its own operation, it drives the internal fan blades to rotate. The fixed connection between motor 4 and centrifugal fan 1 ensures the stability of power transmission. During operation, there will be no interruption or instability in power transmission due to loose connection, ensuring that the fan can continuously and stably generate airflow. A fan blade is fixedly connected to the drive end of the motor 4. Driven by the motor 4, the fan blade rotates inside the centrifugal fan 1, thereby causing the air to flow axially inside the centrifugal fan 1 and realizing the function of ventilation. Multiple fixed rods 5 are fixedly connected inside the support frame 2, which increases the structural strength of the support frame 2. The bottom end of the support inclined plate 3 is fixedly connected to the top end of the fixed rod 5. Through this connection method, the support inclined plate 3 can transfer the weight of the right side of the centrifugal fan 1 to the fixed rod 5, and then distribute it to the support frame 2, playing the role of assisting in supporting the centrifugal fan 1. A baffle 6 is fixedly connected to the top end of the fixed rod 5, and the bottom end of the baffle 6 is fixedly connected to the top end of the support frame 2. A threaded block 7 is threadedly connected inside the baffle 6, and a control component that is easy to turn is fixedly connected to the top end of the threaded block 7. The control component includes a turning block 8, and the bottom end of the turning block 8 is fixedly connected to the top end of the threaded block 7.

[0037] The external fixed connection of the screwing block 8 has two handles 9, which facilitate the operator's application of force, making the screwing operation easier and more convenient, and facilitating the operation of the threaded block 7. The bottom end of the threaded block 7 is fixedly connected to a limiting rod 10. The bottom end of the limiting rod 10 and the inner bottom end of the fixed rod 5 are both arc-shaped. This arc design allows the limiting rod 10 to interact more smoothly with the locking ball 15 and the inner bottom surface of the fixed rod 5 during movement, avoiding jamming. The external fixed connection of the limiting rod 10 is a limiting plate 11. A strong spring 12 is sleeved on the outside of the fixed rod 5. A sliding hole 13 is opened inside the fixed rod 5. The external part of the limiting plate 11 is slidably connected to the inside of the sliding hole 13, providing sliding space for the limiting plate 11. The top end of the strong spring 12 is fixedly connected to the bottom end of the limiting plate 11, and the bottom end of the strong spring 12 is fixedly connected to the bottom end inside the sliding hole 13. Two movable holes 14 are opened on the outside of the fixed rod 5. A locking ball 15 is movably connected inside the movable hole 14. The locking ball 15 plays a key role in connection and separation during the installation and disassembly of the fan.

[0038] The outer bottom end of the limiting rod 10 contacts the outer side of the locking ball 15. The front end of the centrifugal fan 1 is fixedly connected to the connecting frame 16. The connecting frame 16 is connected to the ventilation pipe 17 through a locking assembly. The locking assembly includes multiple bolts 19. Multiple threaded holes 18 are opened on the left side of the connecting frame 16. The outer threads of the bolts 19 are connected to the inside of the threaded holes 18. The outer threads of the multiple bolts 19 are respectively connected to the four corners of the ventilation pipe 17. This multi-point connection method ensures that the connecting frame 16 and the ventilation pipe 17 are firmly and stably connected, preventing them from loosening or separating during use.

[0039] Reference Figure 1 , Figure 4 and Figure 5 The front side of the connecting frame 16 has an internal receiving hole 20, which provides space for the installation and movement of internal components. Multiple telescopic rods 21 are fixedly connected to the rear end of the receiving hole 20. The telescopic rods 21 can extend and retract within a certain range to adjust their length. A telescopic spring 22 is sleeved on the outside of the telescopic rods 21. The telescopic spring 22 works in conjunction with the telescopic rods 21 to provide elastic force. A limit frame 23 is fixedly connected to the front end of the multiple telescopic rods 21. A moving ring 24 is fixedly connected to the front side of the limit frame 23. A stationary ring 25 is fixedly connected to the rear side of the ventilation pipe 17. The outside of the limit frame 23 is slidably connected to the inside of the receiving hole 20. One side of the moving ring 24 is in contact with the other side of the stationary ring 25. When the fan is running, it can prevent air from leaking from the connection gap and ensure the sealing of the connection between the fan and the ventilation pipe 17.

[0040] Working Principle: When the fan is installed, the motor 4 is fixed to the right side of the centrifugal fan 1, and the fan blades at its drive end rotate inside the centrifugal fan 1. The two support frames 2 at the bottom of the centrifugal fan 1 and the support inclined plate 3 at the bottom right side of the centrifugal fan 1 provide support. The bottom end of the support inclined plate 3 is fixed to the top of the fixed rod 5, and the baffle 6 at the top of the fixed rod 5 is used to install the threaded block 7. During installation, by turning the handle 9 on the turning block 8, the threaded block 7 is driven to rotate inside the baffle 6, causing the limiting rod 10 at the bottom of the threaded block 7 to move downward. The bottom outer end of the limiting rod 10 presses against the locking ball 15. Under the pressing action of the limiting rod 10, the locking ball 15 passes through the movable hole 14 and engages with the locking hole inside the shelf, realizing a stable connection between the fan and the shelf. At this time, the limiting plate 11 outside the limiting rod 10 slides in the sliding hole 13 inside the fixed rod 5, and the strong spring 12 is compressed between the bottom end of the limiting plate 11 and the bottom end inside the sliding hole 13.

[0041] When the fan needs to be disassembled, turn the handle 9 on the twisting block 8 in the opposite direction, which will cause the threaded block 7 to rotate in the opposite direction inside the baffle 6, so that the limiting rod 10 moves upward. The pressure of the limiting rod 10 on the locking ball 15 disappears, and the locking ball 15 naturally falls out of the movable hole 14 into the fixed rod 5 under its own gravity, thus completing the separation of the fan from the carrier.

[0042] When connecting the fan to the ventilation duct 17, the initial connection between the connecting frame 16 and the ventilation duct 17 is achieved by screwing the bolts 19 into the threaded holes 18 on the left side of the connecting frame 16 and into the four corners of the ventilation duct 17. Simultaneously, the telescopic rod 21 at the rear end inside the front receiving hole 20 of the connecting frame 16 and the telescopic spring 22 sleeved on its exterior work together to push the front limiting frame 23 forward. The limiting frame 23 drives the front moving ring 24 forward, ensuring that the moving ring 24 and the rear stationary ring 25 of the ventilation duct 17 are tightly fitted together. During fan operation, the telescopic spring 22 maintains a constant thrust on the limiting frame 23, ensuring tight contact between the moving ring 24 and the stationary ring 25, preventing air leakage from the connection gaps, and ensuring that all air delivered by the fan reaches the designated location through the ventilation duct 17.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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. An axial flow fan that is easy to disassemble and maintain, comprising a centrifugal fan (1), characterized in that: Two support frames (2) are fixedly connected to the bottom end of the centrifugal fan (1). A support inclined plate (3) is fixedly connected to the bottom right side of the centrifugal fan (1). A motor (4) is fixedly connected to the right side of the centrifugal fan (1). Multiple fixing rods (5) are fixedly connected inside the support frames (2). A baffle (6) is fixedly connected to the top of the fixing rods (5). A threaded block (7) is threaded inside the baffle (6). A control component for easy turning is fixedly connected to the top of the threaded block (7). The bottom end of the threaded block (7) is fixedly connected to a limiting rod (10), the outside of the limiting rod (10) is fixedly connected to a limiting disc (11), a strong spring (12) is sleeved on the outside of the limiting rod (10), two movable holes (14) are opened on the outside of the fixed rod (5), a locking ball (15) is movably connected inside the movable hole (14), and a connecting frame (16) is fixedly connected to the front end of the centrifugal fan (1), and the connecting frame (16) is connected to the ventilation pipe (17) through a locking assembly.

2. The axial flow fan that is easy to disassemble and maintain according to claim 1, characterized in that: The front side of the connecting frame (16) has an inner receiving hole (20). Multiple telescopic rods (21) are fixedly connected to the rear end of the inner receiving hole (20). A telescopic spring (22) is sleeved on the outside of the telescopic rods (21). A limit frame (23) is fixedly connected to the front end of the multiple telescopic rods (21). A moving ring (24) is fixedly connected to the front side of the limit frame (23). A stationary ring (25) is fixedly connected to the rear side of the ventilation pipe (17).

3. The axial flow fan that is easy to disassemble and maintain according to claim 1, characterized in that: The drive end of the motor (4) is fixedly connected to a fan blade, and the fan blade is externally rotatably connected to the inside of the centrifugal fan (1).

4. An axial flow fan that is easy to disassemble and maintain according to claim 1, characterized in that: The bottom end of the support inclined plate (3) is fixedly connected to the top end of the fixed rod (5), and the bottom end of the baffle (6) is fixedly connected to the top end of the support frame (2).

5. An axial flow fan that is easy to disassemble and maintain according to claim 1, characterized in that: The control component includes a screw block (8), the bottom end of which is fixedly connected to the top end of the threaded block (7), and two handles (9) are fixedly connected to the outside of the screw block (8).

6. An axial flow fan that is easy to disassemble and maintain according to claim 1, characterized in that: The fixed rod (5) has a sliding hole (13) inside. The outside of the limiting plate (11) is slidably connected to the inside of the sliding hole (13). The top end of the strong spring (12) is fixedly connected to the bottom end of the limiting plate (11), and the bottom end of the strong spring (12) is fixedly connected to the bottom end inside the sliding hole (13).

7. An axial flow fan that is easy to disassemble and maintain according to claim 1, characterized in that: The outer bottom end of the limiting rod (10) is in contact with the outside of the locking ball (15), and the bottom end of the limiting rod (10) and the inner bottom end of the fixing rod (5) are both arc-shaped.

8. An axial flow fan that is easy to disassemble and maintain according to claim 1, characterized in that: The locking assembly includes multiple bolts (19), and multiple threaded holes (18) are provided on the left side of the connecting frame (16). The external threads of the bolts (19) are connected to the inside of the threaded holes (18), and the external threads of the multiple bolts (19) are respectively connected to the inside of the four corners of the ventilation pipe (17).

9. An axial flow fan that is easy to disassemble and maintain according to claim 2, characterized in that: The limiting frame (23) is externally slidably connected to the inside of the receiving hole (20), and one side of the moving ring (24) is in contact with one side of the stationary ring (25).

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