Centrifugal fan impeller structure

Abstract

The utility model provides a centrifugal fan impeller structure which comprises a rear disc, the rear disc is fixedly connected with a front disc through a plurality of connecting blades, the inner wall of the front disc is provided with a plurality of positioning grooves, the interior of the rear disc is provided with a plurality of through grooves, and the through grooves are arranged in the rear disc. Multiple through grooves are formed in the rear disc, movable blades are installed in the multiple through grooves, clamping grooves are formed in the ends of the movable blades, sliding grooves are formed in the inner walls of the multiple through grooves, multiple communicating grooves are formed in the outer wall of the rear disc, the multiple communicating grooves communicate with the sliding grooves, a rotating disc is arranged on the rear side of the rear disc, and a connecting plate is fixedly connected to the outer wall of the rotating disc; the outer walls of the multiple connecting plates are fixedly connected with connecting blocks, the other ends of the connecting blocks are fixedly connected with sliding blocks, the side walls of the sliding blocks are fixedly connected with clamping blocks, and under the action of the rotating disc and the clamping blocks, maintenance and cleaning of the blades are facilitated, and the maintenance efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of fan impeller technology, and more specifically, relates to a centrifugal fan impeller structure. Background Technology

[0002] Centrifugal fan impellers, generally composed of front discs, rear discs, blades, and shaft discs, are the heart of centrifugal fans. They generate centrifugal force through high-speed rotation, causing gas to be drawn in axially and accelerated out radially, thereby increasing gas pressure.

[0003] Existing impellers typically have blades connected to the front and rear discs using either welded or riveted assembly. During maintenance and cleaning, the small gaps between multiple blades make it very difficult to perform maintenance and cleaning, leading to reduced maintenance efficiency and increased downtime of the fan, which affects the subsequent use of the fan. Utility Model Content

[0004] The purpose of this invention is to provide a centrifugal fan impeller structure that allows for convenient and quick blade cleaning, shortens maintenance and cleaning time, and improves maintenance efficiency.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A centrifugal fan impeller structure is provided, including a rear disc. The rear disc is fixedly connected to a front disc via connecting blades, and there are multiple connecting blades. The inner wall of the front disc has multiple positioning grooves. The interior of the rear disc has multiple through grooves, and movable blades are installed inside each of the multiple through grooves. The ends of the movable blades have slots. The inner walls of the multiple through grooves have sliding grooves. The outer wall of the rear disc has multiple communicating grooves, which communicate with the sliding grooves. A turntable is provided on the rear side of the rear disc. Multiple connecting plates are fixedly connected to the outer wall of the turntable. Each connecting plate has a fixed connecting block on its outer wall. A slider is fixedly connected to the other end of each connecting block. A locking block is fixedly connected to the side wall of the slider, and the locking block is located inside the locking groove.

[0006] Optionally, one end of the movable blade with a slot is located inside the through groove, the other end of the movable blade is located inside the positioning groove, the connecting block is located inside the connecting groove, and the slider is located inside the sliding groove.

[0007] Optionally, the outer wall of the rear plate is provided with a moving groove, and there are multiple moving grooves. The outer wall of the turntable is fixedly connected with a moving block, and there are multiple moving blocks. The outer wall of the multiple moving blocks is fixedly connected with a spring. The other end of the spring is fixedly connected to the inner wall of the moving groove. The outer wall of the rear plate is provided with a threaded hole. The turntable is fixedly connected to the rear plate by a positioning bolt, and the other end of the positioning bolt is located inside the threaded hole.

[0008] Optionally, a limiting plate is fixedly connected between the rear plate and the front plate, and there are multiple limiting plates. Limiting grooves are formed inside the multiple limiting plates, and the movable blade is located inside the limiting grooves.

[0009] Optionally, a rotating shaft is provided in the middle of the rear disc, a rear axle disc is fixedly connected to the outer wall of the rear end of the rotating shaft, a front axle disc is fixedly connected to the outer wall of the front end of the rotating shaft, the rear axle disc and the front axle disc are fixedly connected by a fixing bolt, the fixing bolt passes through the front axle disc, the rear disc and the front axle disc in sequence, and a nut is threaded onto the outer wall of the fixing bolt.

[0010] Optionally, a keyway is provided on the inner wall of the rotating shaft, and the keyway extends through the entire rotating shaft.

[0011] Beneficial effects:

[0012] 1. In the initial state, the locking block is located inside the through slot. When disassembling the movable blade, first rotate the turntable clockwise. The connecting plate, connecting block, and slider connected to it will rotate clockwise simultaneously, causing the locking block to enter the slide groove as the slider rotates. Insert the end of the movable blade without the locking slot into the through slot, and finally into the positioning slot. At this time, the locking slot in the movable blade corresponds to the position of the slide groove. After the disassembled movable blade is maintained and cleaned, it is placed back into the rear plate in the same way. Then, rotate the turntable counterclockwise. Based on the same principle, the locking block can be returned to its position, and at this time, the locking block enters the locking slot in the movable blade. The movable blade is easy to disassemble and assemble quickly, which facilitates maintenance and cleaning and improves maintenance efficiency.

[0013] 2. By setting multiple moving blocks on the outer wall of the turntable, the moving blocks move in the moving slots when the turntable is rotated clockwise, and the springs are in a compressed state at this time. After the movable blade is removed, the turntable will return to its position counterclockwise due to the rebound effect of multiple springs. After the movable blade is cleaned and maintained, the same operation is performed to install the movable blade inside the rear plate. After installation, the same principle is used to return the turntable to its position, so that the movable blade can be fixed and limited. The rear flange can be fixed to the front flange by fixing bolts, so that the entire impeller can rotate with the external device. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a first-view overall structural diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the overall structure of the present invention from a second perspective;

[0017] Figure 3 This is a schematic diagram of the structure of the intermediate component between the front and rear discs of this utility model;

[0018] Figure 4 This is a schematic diagram of the turntable structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the movable blade structure of this utility model;

[0020] Figure 6 This is a schematic diagram of the rear disc structure of this utility model;

[0021] Figure 7 This is a schematic diagram showing the connection between the front axle disc and the rear axle disc of this utility model.

[0022] Explanation of symbols in the diagram:

[0023] 1. Rear plate; 2. Front plate; 3. Connecting blade; 4. Positioning groove; 5. Through groove; 6. Movable blade; 7. Slot; 8. Slide groove; 9. Connecting groove; 10. Turntable; 11. Connecting plate; 12. Connecting block; 13. Slider; 14. Slot; 15. Moving groove; 16. Moving block; 17. Spring; 18. Threaded hole; 19. Positioning bolt; 20. Limiting plate; 21. Limiting groove; 22. Rotating shaft; 23. Rear axle plate; 24. Front axle plate; 25. Fixing bolt; 26. Nut; 27. Keyway. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0025] Reference Figure 1-7The present invention provides a centrifugal fan impeller structure according to an embodiment of the present invention. A centrifugal fan impeller structure includes a rear disc 1, which is fixedly connected to a front disc 2 via connecting blades 3, and there are multiple connecting blades 3. The inner wall of the front disc 2 has multiple positioning grooves 4. The interior of the rear disc 2 has multiple through grooves 5, and each through groove 5 has a movable blade 6 installed inside. The end of each movable blade 6 has a retaining groove 7. The inner wall of each through groove 5 has a sliding groove 8. The outer wall of the rear disc 1 has multiple connecting grooves 9, which communicate with the sliding grooves 8. A turntable 10 is provided on the rear side of the rear disc 1. Multiple connecting plates 11 are fixedly connected to the outer wall of the turntable 10. Each connecting plate 11 has a connecting block 12 fixedly connected to its outer wall, and a slider 1 is fixedly connected to the other end of each connecting block 12. 3. A locking block 14 is fixedly connected to the side wall of the slider 13. In the initial state, the locking block 14 is located inside the through groove 5. When disassembling the movable blade 6, the turntable 10 is rotated clockwise first. The connecting plate 11, connecting block 12 and slider 13 connected to it rotate clockwise synchronously, so that the locking block 14 enters the slide groove 8 with the rotation of the slider 13, so that the end of the movable blade 6 without the locking groove 7 is inserted into the through groove 5, and finally enters the positioning groove 4. At this time, the locking groove 7 in the movable blade 6 corresponds to the position of the slide groove 8. After the disassembled movable blade 6 is maintained and cleaned, it is put into the rear plate 1 in the same way. Then, the turntable 10 is rotated counterclockwise. In the same way, the locking block 14 can be returned to its position, and at this time the locking block 14 enters the locking groove 7 in the movable blade 6. The movable blade 6 is easy and quick to disassemble and assemble, and the locking block 14 is located inside the locking groove 7.

[0026] In another embodiment of this utility model, please refer to Figures 4 to 5 The movable blade 6 has a slot 7 at one end located inside the through groove 5, and the other end of the movable blade 6 is located inside the positioning groove 4. The connecting block 12 is located inside the connecting groove 9, and the slider 13 is located inside the sliding groove 8.

[0027] In another embodiment of this utility model, please refer to Figures 4 to 6The outer wall of the rear disc 1 has multiple movable grooves 15. Multiple movable blocks 16 are fixedly connected to the outer wall of the turntable 10. Springs 17 are fixedly connected to the outer walls of the multiple movable blocks 16, with the other end of each spring 17 fixedly connected to the inner wall of the movable groove 15. Multiple movable blocks 16 are arranged on the outer wall of the turntable 10. When the turntable 10 is rotated clockwise, the movable blocks 16 move within the movable grooves 15, and the springs 17 are compressed at this time. After the movable blade 6 is removed, the turntable 10... Due to the rebound action of multiple springs 17, it will return to its position counterclockwise. After the maintenance and cleaning of the movable blade 6 is completed, the same operation is performed to install the movable blade 6 inside the rear plate 1. After installation, the same principle is used to return the turntable 10 to its position, so that the movable blade 6 can be fixed and limited. The outer wall of the rear plate 1 is provided with a threaded hole 18. The turntable 10 is fixedly connected to the rear plate 1 by a positioning bolt 19. The other end of the positioning bolt 19 is located inside the threaded hole 18. After the position of the turntable 10 is determined, the position of the turntable 10 can be fixed by the positioning bolt 19.

[0028] In another embodiment of this utility model, please refer to Figure 1 A limiting plate 20 is fixedly connected between the rear plate 1 and the front plate 2, and there are multiple limiting plates 20. The internal part of the multiple limiting plates 20 is provided with a limiting groove 21. The movable blade 6 is located inside the limiting groove 21. The positioning groove 4 and the through groove 5 are connected through the limiting groove 21.

[0029] In another embodiment of this utility model, please refer to Figures 2 to 7 A rotating shaft 22 is provided in the middle of the rear disc 1. A rear axle disc 23 is fixedly connected to the outer wall of the rear end of the rotating shaft 22, and a front axle disc 24 is fixedly connected to the outer wall of the front end of the rotating shaft 22. The rear axle disc 23 and the front axle disc 24 are fixedly connected by a fixing bolt 25. The fixing bolt 25 passes through the front axle disc 24 and the front disc 2 in sequence. A nut 26 is threaded on the outer wall of the fixing bolt 25. The fixing bolt 25 and the nut 26 work together to fix the rear axle disc 23 and the front axle disc 24, so that the entire impeller can rotate with the external device. A keyway 27 is provided on the inner wall of the rotating shaft 22, and the keyway 27 passes through the entire rotating shaft 22.

[0030] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A centrifugal fan impeller structure, comprising a rear disc (1), characterized in that: The rear disc (1) is fixedly connected to the front disc (2) via connecting blades (3), and there are multiple connecting blades (3). The inner wall of the front disc (2) is provided with positioning grooves (4), and there are multiple positioning grooves (4). The interior of the rear disc (1) is provided with through grooves (5), and there are multiple through grooves (5). Movable blades (6) are installed inside each of the multiple through grooves (5). The ends of the movable blades (6) are provided with slots (7). The inner walls of the multiple through grooves (5) are provided with sliding grooves (8). The outer wall of the rear disc (1) is provided with connecting... There is a through groove (9), and there are multiple through grooves (9). The multiple through grooves (9) are connected to the sliding groove (8). A turntable (10) is provided on the rear side of the rear plate (1). A connecting plate (11) is fixedly connected to the outer wall of the turntable (10). There are multiple connecting plates (11). A connecting block (12) is fixedly connected to the outer wall of each of the multiple connecting plates (11). A slider (13) is fixedly connected to the other end of the connecting block (12). A locking block (14) is fixedly connected to the side wall of the slider (13). The locking block (14) is located inside the locking groove (7).

2. The centrifugal fan impeller structure as described in claim 1, characterized in that: The movable blade (6) has a slot (7) at one end located inside the through slot (5), the movable blade (6) at the other end located inside the positioning slot (4), the connecting block (12) located inside the connecting slot (9), and the slider (13) located inside the sliding groove (8).

3. The centrifugal fan impeller structure as described in claim 1, characterized in that: The outer wall of the rear disc (1) is provided with a moving groove (15), and there are multiple moving grooves (15). The outer wall of the turntable (10) is fixedly connected with a moving block (16), and there are multiple moving blocks (16). The outer wall of the multiple moving blocks (16) is fixedly connected with a spring (17). The other end of the spring (17) is fixedly connected to the inner wall of the moving groove (15). The outer wall of the rear disc (1) is provided with a threaded hole (18). The turntable (10) is fixedly connected to the rear disc (1) by a positioning bolt (19). The other end of the positioning bolt (19) is located inside the threaded hole (18).

4. The centrifugal fan impeller structure as described in claim 1, characterized in that: The rear plate (1) and the front plate (2) are fixedly connected by a limiting plate (20), and there are multiple limiting plates (20). The multiple limiting plates (20) have a limiting groove (21) inside, and the movable blade (6) is located inside the limiting groove (21).

5. The centrifugal fan impeller structure as described in claim 1, characterized in that: A rotating shaft (22) is provided in the middle of the rear disc (1). A rear axle disc (23) is fixedly connected to the outer wall of the rear end of the rotating shaft (22). A front axle disc (24) is fixedly connected to the outer wall of the front end of the rotating shaft (22). The rear axle disc (23) and the front axle disc (24) are fixedly connected by a fixing bolt (25). The fixing bolt (25) passes through the front axle disc (24), the rear disc (1), and the front axle disc (24) in sequence. A nut (26) is threaded onto the outer wall of the fixing bolt (25).

6. The centrifugal fan impeller structure as described in claim 5, characterized in that: The inner wall of the rotating shaft (22) is provided with a keyway (27), which runs through the entire rotating shaft (22).

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