Fan double-impeller with noise reduction structure

Abstract

The fan double-impeller with the noise reduction structure comprises a rotating shaft, an installation block is fixedly installed on the outer side of the middle of the rotating shaft, and a fixing block is fixedly installed on the outer side of the rear end of the rotating shaft. The first impeller disc is connected to the outer side of the rear end of the mounting block, a second impeller disc is connected to the outer side of the front end of the mounting block, replacement structures are connected to the outer side of the interior of the first impeller disc and the outer side of the interior of the second impeller disc, and blades are connected to the outer sides of the replacement structures; mounting rings are fixedly mounted on the rear side of the first impeller disc and the rear side of the second impeller disc; the single sound reduction rings are connected to the inner side of the rear end of the first impeller disc and the inner side of the rear end of the second impeller disc correspondingly, and the inner side of the front end of the first impeller disc and the inner side of the front end of the second impeller disc are both connected with rubber buffer rings. According to the fan double-impeller with the noise reduction structure, the blades can be conveniently installed, noise reduction can be conveniently conducted on the fan double-impeller, and the impeller can be conveniently fixed.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine double impeller technology, specifically a wind turbine double impeller with a noise reduction structure. Background Technology

[0002] A double impeller for a wind turbine refers to two impellers with moving blades installed inside the wind turbine. It is a component of the rotor of an impulse turbine. Double impellers for wind turbines have advantages such as simple structure, ease of manufacturing and maintenance, and stable flow. Noise reduction structures are required during the use of double impellers for wind turbines to improve their performance.

[0003] However, most existing technical solutions have the following drawbacks: when fixing the impeller, the wedge block is moved by a spring to fix it, the noise reduction effect of ordinary fan double impellers is not good, and the replacement of blades is not convenient. Therefore, this utility model provides a fan double impeller with a noise reduction structure to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a fan double impeller with a noise reduction structure, so as to solve the problem mentioned in the background art that the ordinary fan double impeller has poor noise reduction effect and is not convenient for blade replacement when fixing the impeller by moving the wedge block with a spring.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fan impeller with a noise reduction structure, including a rotating shaft, with a mounting block fixedly installed on the outer side of its middle portion, and a fixing block fixedly installed on the outer side of the rear end of the rotating shaft;

[0006] Also includes:

[0007] The first impeller is connected to the outer rear end of the mounting block, and the second impeller is connected to the outer front end of the mounting block. The inner outer side of the first impeller and the inner outer side of the second impeller are both connected to a replacement structure, and the outer side of the replacement structure is connected to a blade. The rear side of the first impeller and the rear side of the second impeller are both fixedly installed with mounting rings, and the middle side of the mounting ring is connected to a fixing rod.

[0008] The noise reduction ring is connected to the inner rear end of the first impeller and the inner rear end of the second impeller respectively. Rubber buffer rings are connected to the inner front end of both the first and second impellers, and noise reduction holes are opened on the inner surface of the rubber buffer rings.

[0009] Preferably, the mounting block is connected to the first impeller disk in a sliding manner, and the mounting blocks are symmetrically distributed about the center line of the rotating shaft.

[0010] Preferably, the replacement structure includes a mounting groove, which is formed on the outer surface of the first impeller and the outer surface of the second impeller respectively. Springs are fixedly provided on the inner outer side of the first impeller and the inner outer side of the second impeller, and a moving rod is fixedly installed on the outer side of the spring. The mounting rod is connected to the left side of the first impeller and the left side of the second impeller.

[0011] Preferably, the mounting groove and the blade are connected by a snap-fit ​​mechanism, and the blades are evenly distributed on the outer side of the first impeller disk.

[0012] Preferably, the mounting ring and the fixing rod are connected by threads, and the mounting ring and the rotating shaft are connected by a fitting method.

[0013] Preferably, the noise reduction ring is connected to the rotating shaft by a snap-fit ​​mechanism and plays a noise reduction role between the rotating shaft and the first impeller disk.

[0014] Preferably, the mounting rod and the blade are connected by a thread.

[0015] Preferably, the noise-absorbing holes are evenly distributed on the inner side of the rubber buffer ring, and the rubber buffer ring is connected to the first impeller disk in a fitted manner.

[0016] Compared with the prior art, the beneficial effects of this utility model are: the fan double impeller with noise reduction structure facilitates the installation of blades, facilitates noise reduction of the fan double impeller, and facilitates the fixing of the impeller;

[0017] By rotating the mounting rod, the mounting rod is threadedly connected to the outer front end of the first impeller disk and the outer front end of the second impeller disk, thereby separating the mounting rod from the front side of the blade. Pulling the blade causes the blade to push the moving rod to slide outward, which in turn causes the moving rod to drive the spring to compress, thereby separating the moving rod from the outside of the blade and separating the blade from the inside of the mounting groove, making it convenient to replace the blade.

[0018] By installing the first impeller and the second impeller on the front and rear sides of the rotating shaft respectively, the first impeller drives the mounting ring to contact the fixed block, thereby engaging the second impeller on the outer side of the mounting block. Rotating the fixing rod causes the fixing rod to be threaded on the middle side of the mounting ring, thereby threading the fixing rod on the upper and lower sides of the rotating shaft, which facilitates the fixing of the first impeller and the second impeller.

[0019] The rubber buffer rings connected to the inner front sides of both the first and second impeller disks can reduce the vibration generated when the shaft rotates, thereby reducing noise. Furthermore, the noise reduction holes on the inner side of the rubber buffer rings and the sound-reducing rings connected to the inner rear ends of both the first and second impeller disks facilitate further noise reduction. Attached Figure Description

[0020] Figure 1 This is a schematic cross-sectional view of the connection between the rotating shaft and the mounting block of this utility model.

[0021] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0022] Figure 3 This is a schematic cross-sectional view of the connection between the second impeller disk and the blades of this utility model.

[0023] Figure 4 This utility model Figure 3 Enlarged structural diagram at point B;

[0024] Figure 5 This is a schematic cross-sectional view of the connection between the first impeller disk and the blades of this utility model.

[0025] Figure 6 This utility model Figure 5 Enlarged structural diagram at point C;

[0026] Figure 7 This is a schematic diagram of the overall structure of the connection between the rubber buffer ring and the sound-absorbing hole of this utility model.

[0027] In the diagram: 1. Shaft; 2. Mounting block; 3. First impeller disk; 4. Blade; 5. Mounting groove; 6. Spring; 7. Moving rod; 8. Second impeller disk; 9. Fixing block; 10. Rubber buffer ring; 11. Mounting ring; 12. Noise reduction ring; 13. Fixing rod; 14. Mounting rod; 15. Noise reduction hole. Detailed Implementation

[0028] 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.

[0029] Please see Figure 1-7This utility model provides a technical solution: a dual impeller for a fan with a noise reduction structure, comprising: a mounting block 2 fixedly installed on the outer side of the middle part of a rotating shaft 1, and a fixing block 9 fixedly installed on the outer side of the rear end of the rotating shaft 1; a first impeller disk 3 connected to the outer side of the rear end of the mounting block 2, and a second impeller disk 8 connected to the outer side of the front end of the mounting block 2; replacement structures connected to the outer sides of both the first impeller disk 3 and the second impeller disk 8, and blades 4 connected to the outer side of the replacement structures; mounting rings 11 fixedly installed on the rear side of both the first impeller disk 3 and the second impeller disk 8, and a fixing rod 13 connected to the middle side of the mounting rings 11; and the first impeller... The first impeller 3 and the second impeller 8 are respectively installed on the front and rear sides of the rotating shaft 1, so that the first impeller 3 drives the mounting ring 11 to contact the fixing block 9, thereby installing the second impeller 8 on the outside of the mounting block 2. Rotating the fixing rod 13 connects the fixing rod 13 to the middle side of the mounting ring 11, thereby connecting the fixing rod 13 to the upper and lower sides of the rotating shaft 1, which facilitates the fixing of the first impeller 3 and the second impeller 8. Rotating the replacement structure connects the replacement structure to the front outer side of the first impeller 3 and the front outer side of the second impeller 8, thereby separating the replacement structure from the front side of the blade 4, which facilitates the replacement of the blade 4.

[0030] The noise reduction rings 12 are connected to the inner rear end of the first impeller disk 3 and the inner rear end of the second impeller disk 8, respectively. Rubber buffer rings 10 are connected to the inner front end of both the first impeller disk 3 and the inner front end of both the second impeller disk 8. The inner surface of the rubber buffer rings 10 is provided with noise reduction holes 15. The rubber buffer rings 10 connected to the inner front end of both the first impeller disk 3 and the second impeller disk 8 can reduce the vibration generated when the shaft 1 rotates, thereby reducing noise. The noise reduction holes 15 on the inner side of the rubber buffer rings 10 and the noise reduction rings 12 connected to the inner rear end of both the first impeller disk 3 and the second impeller disk 8 further facilitate noise reduction.

[0031] When using a dual impeller fan equipped with a noise reduction structure, specifically as follows: Figure 3 , Figure 5 and Figure 6 In this configuration, the first impeller disk 3 and the second impeller disk 8 are respectively installed on the front and rear sides of the rotating shaft 1. The mounting block 2 is connected to the first impeller disk 3 by a sliding manner, and the mounting block 2 is symmetrically distributed about the center line of the rotating shaft 1. This allows the first impeller disk 3 to drive the mounting ring 11 to contact the fixing block 9, thereby causing the second impeller disk 8 to be engaged and installed on the outer side of the mounting block 2. The mounting ring 11 is connected to the fixing rod 13 by a thread, and the mounting ring 11 is connected to the rotating shaft 1 by a fitting manner. Rotating the fixing rod 13 causes the fixing rod 13 to be threaded on the middle side of the mounting ring 11, thereby causing the fixing rod 13 to be threaded on the upper and lower sides of the rotating shaft 1, which facilitates the fixing of the first impeller disk 3 and the second impeller disk 8.

[0032] Specific examples Figure 1 , Figure 2 and Figure 6 In the process, rotating the mounting rod 14, which is connected to the blade 4 by a thread, allows the mounting rod 14 to be threaded to the outer front end of the first impeller disk 3 and the outer front end of the second impeller disk 8, thereby separating the mounting rod 14 from the front side of the blade 4. The mounting groove 5 is connected to the blade 4 by a snap-fit ​​mechanism, and the blades 4 are evenly distributed on the outer side of the first impeller disk 3. Pulling the blade 4 causes the blade 4 to push the moving rod 7 to slide outward, thereby causing the moving rod 7 to drive the spring 6 to compress, thus separating the moving rod 7 from the outer side of the blade 4, and separating the blade 4 from the inside of the mounting groove 5, making it convenient to replace the blade 4.

[0033] Specific examples Figure 3 , Figure 4 and Figure 7 In this design, since the noise reduction holes 15 are evenly distributed on the inner side of the rubber buffer ring 10, and the rubber buffer ring 10 is connected to the first impeller disk 3 in a fitted manner, the vibration generated when the shaft 1 rotates can be reduced by the rubber buffer ring 10 connected to the inner front side of the first impeller disk 3 and the inner front side of the second impeller disk 8, thereby reducing noise. The noise reduction ring 12 is connected to the shaft 1 in a snap-fit ​​manner and plays a noise reduction role between the shaft 1 and the first impeller disk 3. Furthermore, the noise reduction holes 15 opened on the inner side of the rubber buffer ring 10 and the noise reduction ring 12 connected to the inner rear side of the first impeller disk 3 and the inner rear side of the second impeller disk 8 facilitate further noise reduction.

[0034] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0035] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A fan impeller with a noise reduction structure, comprising a rotating shaft (1), wherein a mounting block (2) is fixedly installed on the outer side of the middle part, and a fixing block (9) is fixedly installed on the outer side of the rear end of the rotating shaft (1). Its features are, Also includes: The first impeller disk (3) is connected to the outer rear end of the mounting block (2), and the outer front end of the mounting block (2) is connected to the second impeller disk (8). The inner outer side of the first impeller disk (3) and the inner outer side of the second impeller disk (8) are both connected to a replacement structure, and the outer side of the replacement structure is connected to a blade (4). The rear side of the first impeller disk (3) and the rear side of the second impeller disk (8) are both fixedly installed with a mounting ring (11), and the middle side of the mounting ring (11) is connected to a fixing rod (13). The noise reduction ring (12) is connected to the inner rear end of the first impeller disk (3) and the inner rear end of the second impeller disk (8). The inner front end of the first impeller disk (3) and the inner front end of the second impeller disk (8) are both connected to rubber buffer rings (10), and the inner surface of the rubber buffer ring (10) is provided with noise reduction holes (15).

2. A fan impeller with a noise reduction structure according to claim 1, characterized in that: The mounting block (2) is connected to the first impeller disk (3) by sliding, and the mounting block (2) is symmetrically distributed about the center line of the rotating shaft (1).

3. A fan impeller with a noise reduction structure according to claim 1, characterized in that: The replacement structure includes a mounting groove (5), which is formed on the outer surface of the first impeller disk (3) and the outer surface of the second impeller disk (8). Springs (6) are fixedly installed on the inner outer side of the first impeller disk (3) and the inner outer side of the second impeller disk (8). A moving rod (7) is fixedly installed on the outer side of the spring (6). Mounting rods (14) are connected to the left side of the first impeller disk (3) and the left side of the second impeller disk (8).

4. A fan impeller with a noise reduction structure according to claim 3, characterized in that: The mounting groove (5) and the blade (4) are connected by a snap-fit ​​method, and the blade (4) is evenly distributed on the outside of the first impeller disk (3).

5. A fan impeller with a noise reduction structure according to claim 1, characterized in that: The mounting ring (11) is connected to the fixing rod (13) by a thread, and the mounting ring (11) is connected to the rotating shaft (1) by a fitting method.

6. A fan impeller with a noise reduction structure according to claim 1, characterized in that: The noise reduction ring (12) is connected to the rotating shaft (1) by a snap-fit ​​method and plays a noise reduction role between the rotating shaft (1) and the first impeller disk (3).

7. A fan impeller with a noise reduction structure according to claim 3, characterized in that: The mounting rod (14) and the blade (4) are connected by a thread.

8. A fan impeller with a noise reduction structure according to claim 1, characterized in that: The noise-absorbing holes (15) are evenly distributed on the inner side of the rubber buffer ring (10), and the rubber buffer ring (10) and the first impeller disk (3) are connected by a fitting method.

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