Fan impeller convenient to disassemble and assemble

Abstract

The utility model relates to the technical field of fan impeller structures, in particular to a fan impeller convenient to disassemble and assemble, which comprises a hub assembly, a plurality of blades and a locking and positioning assembly, and a mounting seat is circumferentially arranged on the outer side wall of the hub assembly; one end of each blade is connected with the corresponding mounting base, the other end of each blade extends in the direction away from the hub assembly, and the number of the mounting bases is consistent with that of the blades; the locking and positioning assemblies are connected to the sides, away from the blades, of the mounting bases, the number of the locking and positioning assemblies is consistent with that of the mounting bases, and the locking and positioning assemblies and the blades are located on the two sides of the mounting bases correspondingly; the locking and positioning assembly is in threaded connection with the ends, close to each other, of the blades; the problem that a traditional fan impeller is tedious in disassembly and assembly process is solved.

Description

Technical Field

[0001] This utility model relates to the field of fan impeller structure technology, specifically to a fan impeller that is easy to disassemble and assemble. Background Technology

[0002] Traditional fan impellers have several shortcomings in applications such as large-scale industrial and civilian axial flow fans and military wind tunnels. Firstly, conventional impellers have complex structures, often made of single or heavy materials, resulting in a large overall weight that hinders lightweight operation and increases energy consumption and equipment load. Secondly, the impeller assembly and disassembly process is cumbersome, and the blade angle is difficult to adjust flexibly. When it is necessary to change parameters such as airflow and velocity according to different operating conditions, it is not easy to adapt the blade angle accordingly. Furthermore, maintenance and blade replacement are time-consuming and labor-intensive, affecting equipment efficiency and maintenance costs. Simultaneously, some impeller structures lack sufficient strength, and long-term operation under complex conditions can easily lead to component loosening and damage, reducing equipment reliability and lifespan. Therefore, there is an urgent need for a fan impeller structure that can achieve lightweight design, quick assembly and disassembly, and flexible blade angle adjustment while ensuring impeller structural strength, to meet the needs of industrial production and special application scenarios. Utility Model Content

[0003] The purpose of this invention is to provide a fan impeller that is easy to disassemble and assemble, thus solving the problem of cumbersome disassembly and assembly processes in traditional fan impellers.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A fan impeller that is easy to assemble and disassemble includes a hub assembly, multiple blades, and a locking and positioning assembly. A mounting base is circumferentially provided on the outer side wall of the hub assembly. One end of each of the multiple blades is connected to the mounting base, and the other end extends away from the hub assembly. The number of mounting bases is the same as the number of blades. The locking and positioning assembly is connected to the side of the mounting base away from the blades. The number of locking and positioning assemblies is the same as the number of mounting bases, and the locking and positioning assemblies and the blades are located on opposite sides of the mounting base. The ends of the locking and positioning assemblies and the blades that are close to each other are threaded together.

[0006] A further technical solution is that the locking and positioning assembly includes a locking post and a retaining ring, a first nut, and a second nut fitted on the locking post. The outer wall of one end of the locking post is threaded. A through hole is provided on the mounting base. The threaded end of the locking post passes through the through hole, and the other end extends in a direction away from the mounting base. The retaining ring is fitted on the locking post and connected to the first end of the mounting base. The diameter of the retaining ring is the same as the diameter of the first end. A washer, the first nut, and the second nut are also fitted sequentially on the locking post. The washer is connected to the retaining ring, the first nut is connected to the washer, and the second nut is connected to the first nut. Both the first nut and the second nut are threadedly connected to the locking post.

[0007] A further technical solution is that a pin hole is provided at one end of the locking pin away from the mounting base, and a pin is inserted through the pin hole. Multiple grooves are provided at one end of the second nut away from the first nut, and the two ends of the pin are respectively located in two corresponding grooves in the second nut.

[0008] A further technical solution is that the hub assembly includes a wheel disc, a bushing, and multiple reinforcing ribs. The wheel disc has mounting holes evenly spaced along its circumference. The second end of the mounting seat is located in the mounting hole, and the first end of the mounting seat extends in a direction away from the wheel disc. The bushing is located at the center of the wheel disc. One end of each of the multiple reinforcing ribs is connected to the bushing, and the other end extends in the direction of the wheel disc to connect with the inner wall of the wheel disc. The mounting holes are provided between adjacent reinforcing ribs, and weight-reducing grooves are formed on the reinforcing ribs.

[0009] A further technical solution is that the end of the blade near the mounting base is connected to a conical platform, the through hole matches the conical platform, the conical platform has a threaded hole, the threaded hole matches the thread on the end of the locking pin, and the threaded end of the locking pin passes through the through hole and is inserted into the threaded hole, and is threadedly connected to the conical platform.

[0010] A further technical solution is that the locking and positioning assembly is made of 35CrMoSiA material.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention replaces the traditional, complex, and difficult-to-disassemble connection method by incorporating a locking and positioning component when connecting the blades and hub assembly. This component includes a locking pin, a retaining ring, a first nut, and a second nut, enabling rapid assembly and disassembly of the blades and hub. When the blades need cleaning, maintenance, or replacement, no specialized tools are required for extended periods. This significantly reduces downtime, improves operational efficiency, and lowers labor and time costs, especially in challenging maintenance scenarios such as large industrial equipment and military wind tunnels. The impeller, reinforcing ribs, and bushing form a robust hub support system. The conical positioning of the blades and mounting base, combined with the locking pin, high-strength nut, and pin, ensures secure blade installation, preventing loosening or deformation during high-speed rotation. Compared to traditional impellers, this design reduces malfunctions caused by structural failures, improving equipment reliability and lifespan. Attached Figure Description

[0013] Figure 1 A schematic diagram of a fan impeller that is easy to assemble and disassemble, provided by this utility model;

[0014] Figure 2 This is a schematic diagram of the mounting base in this utility model;

[0015] Figure 3 This is a schematic diagram of the locking and positioning component in this utility model;

[0016] Figure 4 This is a schematic diagram of the conical platform in this utility model.

[0017] Icons: 1. Hub assembly, 2. Blade, 3. Mounting seat, 4. Locking pin, 5. Second nut, 6. First nut, 7. Retaining ring, 8. Washer, 9. Pin, 10. Groove, 11. Wheel disc, 12. Bushing, 13. Reinforcing rib, 14. Conical platform. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] Example 1

[0020] A fan impeller that is easy to disassemble and assemble, such as Figure 1 and Figure 2As shown, the assembly includes a hub assembly 1, multiple blades 2, and a locking and positioning assembly. A mounting base 3 is circumferentially arranged on the outer side wall of the hub assembly 1. One end of each of the multiple blades 2 is connected to the mounting base 3, and the other end extends away from the hub assembly 1. The number of mounting bases 3 is the same as the number of blades 2. The locking and positioning assembly is connected to the side of the mounting base 3 away from the blades 2. The number of locking and positioning assemblies is the same as the number of mounting bases 3, and the locking and positioning assemblies and the blades 2 are located on opposite sides of the mounting base 3. The locking and positioning assemblies and the blades 2 are threaded together at their closest points.

[0021] In this embodiment of the invention, the entire fan impeller is made of high-strength carbon steel, with the blades 2 made of aerospace aluminum and the locking and positioning components made of 35CrMoSiA material. The locking and positioning components can be aerospace parts made of 35CrMoSiA material through forging. The number of mounting seats 3 circumferentially arranged on the outer wall of the hub assembly 1 can be 12, and the number of blades 2 arranged on the mounting seats 3 is also 12, meaning the mounting seats 3 and blades 2 are arranged in a one-to-one correspondence. A locking and positioning component is also provided on the side of the mounting seat 3 away from the blades 2. The number of locking and positioning components corresponds to the number of mounting seats 3. In a one-to-one correspondence, the locking and positioning components and the blade 2 are distributed on both sides of the mounting base 3, and the locking and positioning components and the blade 2 are connected by threads at their closest ends. Thus, after the blade 2 is installed on the mounting base 3, the locking and positioning components lock and position the blade 2, ensuring the stability of the blade 2 installed on the mounting base 3. Furthermore, the blade 2 and the locking and positioning components are threadedly connected, meaning that when it is necessary to adjust the angle of the blade 2, one only needs to loosen the locking and positioning components first, rotate the blade 2 to the required angle, and then tighten the locking and positioning components again, so that the locking and positioning components lock and position the blade 2 again. This allows for quick and convenient adjustment of the blade 2 angle.

[0022] In one implementation, such as Figure 3As shown, the locking and positioning assembly includes a locking pin 4 and a retaining ring 7, a first nut 6, and a second nut 5 fitted onto the locking pin 4. One end of the locking pin 4 has threads on its outer wall, while the other end has a smooth outer wall. The diameter of the threaded end is larger than the diameter of the smooth end. The retaining ring 7 is fitted onto the locking pin 4 and close to its threaded end. The first nut 6 and the second nut 5 are also fitted onto the locking pin 4. The first nut 6 is located on the side of the retaining ring 7 away from the threaded end, and the second nut 5 is located close to the smooth end. A through hole is provided on the mounting base 3. The threaded end of the locking pin 4 passes through this through hole, and the other smooth end extends in a direction away from the mounting base 3. After the retaining ring 7 is fitted onto the locking pin 4, it connects to the first end of the mounting base 3. The second end of the mounting base 3 connects to the wheel hub assembly. The locking post 4 is connected to the first end of the wheel hub. The diameter of the retaining ring 7 is the same as that of the first end. A washer 8 is also fitted between the retaining ring 7 and the first nut 6 on the locking post 4. The two sides of the washer 8 are connected to the retaining ring 7 and the first nut 6 respectively. The second nut 5 is also connected to the first nut 6 on the locking post 4. Both the first nut 6 and the second nut 5 are threadedly connected to the locking post 4. Thus, after the blade 2 is set on the mounting base 3, the threaded end of the locking post 4 passes through the through hole of the mounting base 3 and is threadedly connected to the blade 2. The retaining ring 7, washer 8, first nut 6 and second nut 5 are fitted on the locking post 4. The retaining ring 7 is connected to the first end of the mounting base 3. Thus, the cooperation between the mounting base 3 and the locking post 4, retaining ring 7, washer 8, first nut 6 and second nut 5 locks and positions the blade 2, so that the blade 2 is firmly installed on the wheel hub.

[0023] In one embodiment, a pin hole is provided at one end of the locking pin 4 away from the mounting base 3, and a pin 9 is inserted through the pin hole to prevent the second nut 5 from loosening and unscrewing; multiple grooves 10 are provided at one end of the second nut 5 away from the first nut 6, and the two ends of the pin are respectively located in two corresponding grooves 10 in the second nut 5, thereby preventing the pin from falling out of the pin hole of the locking pin 4, so that the pin is more securely set on the locking pin 4 to prevent the second nut 5 from loosening.

[0024] In one embodiment, the hub assembly 1 includes a wheel disc 11, a bushing 12, and a plurality of reinforcing ribs 13. Mounting holes are evenly spaced along the circumference of the wheel disc 11. The second end of a mounting seat 3 is located within the mounting holes, and its first end extends away from the wheel disc 11. The mounting holes and the second end of the mounting seat 3 are matched. The bushing 12 in the hub assembly 1 is located at the center of the wheel disc 11. One end of each of the plurality of reinforcing ribs 13 is connected to the bushing 12, and the other end extends towards the wheel disc 11 to connect with the inner wall of the wheel disc 11. Weight-reducing grooves are also provided on the reinforcing ribs 13. The wheel disc 11, reinforcing ribs 13, and bushing 12 constitute a stable hub support system. Mounting holes are provided between adjacent reinforcing ribs 13, i.e., mounting holes on the wheel disc 11 are located between two adjacent reinforcing ribs 13. The front cover plate of the wheel disc 11 is an annular cover plate, and a sleeve hole is provided at the center of the rear cover plate for fitting the bushing 12.

[0025] In one implementation, such as Figure 4 As shown, a conical platform 14 is connected to one end of the blade 2 near the mounting base 3. The through hole on the mounting base 3 matches the shape of the conical platform 14, meaning the shape of the through hole on the mounting base 3 is adapted to the shape of the conical platform 14. The blade 2 is connected to the wheel 11 by the matching connection between the conical platform 14 and the mounting base 3 on the wheel 11. A threaded hole is provided on the conical platform 14, which matches the thread on the threaded end of the locking pin 4. The threaded end of the locking pin 4 passes through the through hole and is inserted into the threaded hole, where it is threadedly connected to the conical platform 14. That is, after the blade 2 is mounted on the mounting base 3 of the wheel 11 via the conical platform 14, the threaded end of the locking pin 4 passes through the through hole of the mounting base 3 and is inserted into the threaded hole of the conical platform 14, thus threading the threaded end of the locking pin 4 to the conical platform 14. A retaining ring 7 is then fitted onto the locking pin 4. The washer 8, the first nut 6, and the second nut 5 are used to make the retaining ring 7 contact and connect with the first end of the mounting base 3. The washer 8 is in contact with the retaining ring 7, the first nut 6 is in contact with the washer 8, and the second nut 5 is in contact with the first nut 6. Then, the first nut 6 and the second nut 5 are tightened. Finally, the pin 9 is inserted into the pin hole of the locking post 4, and the two ends of the pin 9 are respectively located in the corresponding grooves 10 opened in the second nut 5. Thus, the cooperation between the conical platform 14 of the blade 2, the mounting base 3, and the locking and positioning assembly allows the blade 2 to be more firmly installed on the wheel disc 11. This structure can ensure the structural strength of the fan impeller while realizing the quick assembly and disassembly of the fan impeller. The overall structure is simple. When it is necessary to adjust the angle of the blade 2, simply rotate the conical platform 14, adjust the angle, and then use the locking and positioning assembly to lock and position the blade 2. The operation is simple and quick.

[0026] This invention replaces the traditional complex and difficult-to-disassemble connection method by setting a locking and positioning component when connecting the blade 2 and the hub assembly 1. The locking and positioning component includes a locking pin 4, a retaining ring 7, a first nut 6, and a second nut 5, thereby enabling quick assembly and disassembly of the blade 2 and the hub. When the blade 2 needs cleaning, maintenance, or replacement, no special tools are required for long-term operation. Especially in difficult-to-maintain scenarios such as large industrial equipment and military wind tunnels, it significantly shortens downtime, improves operation and maintenance efficiency, and reduces labor and time costs. The wheel disk 11, reinforcing rib 13, and bushing 12 form a stable hub support system. The positioning of the blade 2 and the conical platform 14 of the mounting base 3, along with the locking combination of the locking pin 4, high-strength nut, and pin 9, ensures that the blade 2 is firmly installed and is not easy to loosen or deform during high-speed rotation. Compared with traditional impellers, it can reduce failures caused by structural failures and improve the reliability and lifespan of the equipment.

[0027] Although the present invention has been described herein with reference to several illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and modifications can be made to the components and / or layout of the subject matter combination within the scope of the drawings and claims disclosed herein. Besides variations and modifications to the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. A fan impeller that is easy to assemble and disassemble, characterized in that, It includes a hub assembly (1), multiple blades (2) and a locking and positioning assembly, wherein a mounting seat (3) is provided circumferentially on the outer side wall of the hub assembly (1). One end of each of the multiple blades (2) is connected to the mounting base (3), and the other end extends in a direction away from the hub assembly (1). The number of mounting bases (3) is the same as the number of blades (2). The locking and positioning components are connected to the side of the mounting base (3) away from the blade (2). The number of locking and positioning components is the same as the number of mounting bases (3). The locking and positioning components and the blade (2) are located on the two sides of the mounting base (3) respectively. The locking and positioning components and the blade (2) are threaded together at their closest ends.

2. The fan impeller that is easy to assemble and disassemble according to claim 1, characterized in that, The locking and positioning assembly includes a locking post (4) and a retaining ring (7), a first nut (6) and a second nut (5) sleeved on the locking post (4). The outer wall of one end of the locking post (4) is provided with threads. The mounting base (3) has a through hole. One end of the locking pin (4) with a thread passes through the through hole, and the other end extends in a direction away from the mounting base (3). The retaining ring (7) is sleeved on the locking pin (4) and connected to the first end of the mounting base (3). The diameter of the retaining ring (7) is the same as the diameter of the first end. A washer (8), the first nut (6) and the second nut (5) are also sleeved on the locking pin (4) in sequence. The washer (8) is connected to the retaining ring (7), the first nut (6) is connected to the washer (8), and the second nut (5) is connected to the first nut (6). Both the first nut (6) and the second nut (5) are threadedly connected to the locking pin (4).

3. The fan impeller that is easy to assemble and disassemble according to claim 2, characterized in that, A pin hole is provided on the locking pin (4) at one end away from the mounting base (3), and a pin (9) is provided through the pin hole. Multiple grooves (10) are provided on the second nut (5) at one end away from the first nut (6), and the two ends of the pin (9) are respectively located in two corresponding grooves (10) in the second nut (5).

4. The fan impeller that is easy to disassemble and assemble according to claim 3, characterized in that, The hub assembly (1) includes a wheel disc (11), a bushing (12) and a plurality of reinforcing ribs (13). The wheel disc (11) has mounting holes evenly spaced along the circumferential direction. The second end of the mounting seat (3) is located in the mounting hole, and the first end of the mounting seat (3) extends toward the direction away from the wheel disc (11). The bushing (12) is located at the center of the wheel (11). One end of each of the multiple reinforcing ribs (13) is connected to the bushing (12), and the other end extends toward the wheel (11) to connect with the inner wall of the wheel (11). The mounting holes are provided between adjacent reinforcing ribs (13), and weight reduction grooves are provided on the reinforcing ribs (13).

5. A fan impeller that is easy to disassemble and assemble according to claim 4, characterized in that, The blade (2) is connected to a conical platform (14) at one end near the mounting base (3). The through hole matches the conical platform (14). The conical platform (14) has a threaded hole. The threaded hole matches the thread at the end of the locking pin (4). The threaded end of the locking pin (4) passes through the through hole and is inserted into the threaded hole, and is threadedly connected to the conical platform (14).

6. A fan impeller that is easy to disassemble and assemble according to claim 1, characterized in that, The locking and positioning assembly is made of 35CrMoSiA material.

Images