Multi-wing fan impeller structure

Abstract

The utility model relates to the technical field of fan impellers, and discloses a multi-wing fan impeller structure which comprises a rear disc and a front disc, a fixing block is fixedly connected to the middle of the front side of the rear disc, a plurality of first blades are rotationally connected to the outer side of the fixing block, and an adjusting mechanism is arranged on the rear side of the ends, away from the fixing block, of the first blades. The adjusting mechanism comprises a rotating ring, a motor, a gear and an adjusting block, a cavity is formed in the rear disc, the rotating ring is rotationally connected into the cavity, the motor is fixedly connected to the rear side of the rear disc, the output end of the motor extends into the cavity and is connected with the gear through a coupler, and the gear is in meshed connection with the inner side of the rotating ring; a plurality of adjusting grooves are formed in the front side of the rear disc, the rear sides of the adjusting grooves communicate with the cavity, the interiors of the adjusting grooves are slidably connected with adjusting blocks, the front ends of the adjusting blocks are fixedly connected with the first blades, and the rear ends of the adjusting blocks are fixedly connected with the rotating ring; according to the utility model, the flexibility and adaptability of the fan are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fan impellers, in particular to a multi-blade fan impeller structure. Background Art

[0002] A multi-blade centrifugal fan is a driven fluid machine that relies on input mechanical energy to increase gas pressure and discharge the gas. Based on the principle of converting kinetic energy into potential energy, a high-speed rotating impeller accelerates the gas, then decelerates and redirects the flow, converting kinetic energy into potential energy. The impeller structure is a crucial component of the fan. The impeller refers to both the disc with moving blades, a component of the impulse steam turbine rotor, and the disc and its mounted rotating blades.

[0003] For example, the patent document CN216812273U discloses an impeller structure of a multi-blade centrifugal fan, comprising a base, a bracket, a fan casing, a rotating shaft, a mounting device and a driving device; the bracket is fixedly connected to the base and is located on one side of the base, the fan casing is fixedly connected to the bracket and is located on a side of the bracket away from the base, the rotating shaft is rotatably connected to the fan casing and is arranged on the fan casing, the rotating shaft has a limiting hole, the limiting hole passes through the rotating shaft, and the driving device is arranged on a side of the base close to the bracket; however, this existing technology still has many shortcomings, for example: the blade angle of the fan impeller cannot be adjusted, resulting in a stable output wind force, which cannot adapt to different working conditions and requirements, reducing the scope of application of the device. Utility Model Content

[0004] The purpose of the present utility model is to provide a multi-blade fan impeller structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a multi-blade fan impeller structure, comprising a rear disc and a front disc, a fixed block being fixedly connected at the middle of the front side of the rear disc, a plurality of first blades being rotatably connected to the outer side of the fixed block, an adjustment mechanism being provided on the rear side of one end of the plurality of first blades away from the fixed block, the adjustment mechanism comprising a swivel, a motor, a gear and an adjustment block, a cavity being opened inside the rear disc, the swivel being rotatably connected inside the cavity, the rear side of the rear disc being fixedly connected to the motor, the output end of the motor extending into the interior of the cavity and connected to the gear through a coupling, the gear being meshed with the inner side of the swivel, a plurality of adjustment slots being opened on the front side of the rear disc, the rear sides of the plurality of adjustment slots being communicated with the cavity, the interiors of the plurality of adjustment slots being slidably connected to the adjustment blocks, the front end of the adjustment block being fixedly connected to the first blade, and the rear end of the adjustment block being fixedly connected to the swivel.

[0006] As a further improvement to the above scheme, a number of second blades are rotatably connected to the outer side of the fixed block, and a number of noise reduction holes are opened at the end of the number of second blades away from the fixed block. The number of noise reduction holes are evenly arranged, and a number of the second blades and a number of the first blades are spaced apart from each other, and the length of the second blades is shorter than the length of the first blades.

[0007] As a further improvement to the above solution, the front sides of several first blades away from the fixed block are fixedly connected to the front disk by first bolts, and several first connection holes are evenly opened in an annular direction on the front disk, and several first connection holes are matched with the first bolts.

[0008] As a further improvement to the above solution, the front sides of several second blades away from the fixed block are fixedly connected to the front disk by second bolts, and several second connection holes are evenly opened in an annular direction on the front disk, and several second connection holes are matched with the second bolts.

[0009] As a further improvement to the above solution, a number of first fixing grooves are evenly arranged on the outer side of the fixing block in a circumferential direction, and a first fixing member is inserted into the inside of each of the first fixing grooves. The front side of the first fixing member is fixedly connected to the fixing block by a third bolt, and the first blade is rotatably connected to the end of the first fixing member away from the fixing block.

[0010] As a further improvement to the above solution, a number of second fixing grooves are evenly arranged on the outer side of the fixing block in a circumferential direction, and a second fixing member is inserted into the inside of each of the second fixing grooves. The front side of the second fixing member is fixedly connected to the fixing block by a fourth bolt, and the second blade is rotatably connected to the end of the second fixing member away from the fixing block.

[0011] As a further improvement to the above solution, a mounting seat is welded to the middle of the rear side of the rear disc, and the rear side of the mounting seat is fixedly connected to the motor shaft.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The utility model is characterized in that an adjustment mechanism is provided on the rear side of one end of a plurality of first blades away from a fixed block, the adjustment mechanism including a rotating ring, a motor, a gear and an adjusting block. When the angle of the first blade needs to be adjusted, the motor is started, the first motor drives the gear to rotate, the gear drives the rotating ring to rotate inside the cavity, the rotating ring drives the adjusting block to move along the adjusting slot, and the adjusting block drives the air outlet end of the first blade to move, thereby adjusting the angle of the first blade, so that the air volume, air pressure and other parameters of the fan can be changed according to actual conditions, thereby improving the flexibility and adaptability of the fan; further, a plurality of second blades are rotatably connected to the outer side of the fixed block, the plurality of second blades are spaced apart from the plurality of first blades, the length of the second blades is shorter than the length of the first blades, and the first blades cooperate with the second blades to increase the overall air outlet area of ​​the impeller, so that the overall flow rate of the fan is reduced, thereby reducing the overall noise of the fan, ensuring that the wind pressure generated by the impeller being installed in the fan is not reduced, so that the fan can reduce energy consumption while ensuring the working efficiency of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from a first perspective;

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

[0017] Figure 3 for Figure 1 Schematic diagram of the three-dimensional structure after removing the front disc;

[0018] Figure 4 for Figure 3 A front view of the structure;

[0019] Figure 5 It is a structural diagram of the adjustment mechanism in the utility model;

[0020] Figure 6 This is a schematic diagram of the internal structure of the rear disc in the utility model.

[0021] In the figure: 1. rear disc; 2. front disc; 3. fixing block; 4. first blade; 5. adjusting mechanism; 51. cavity; 52. swivel; 53. motor; 54. gear; 55. adjusting slot; 56. adjusting block; 6. second blade; 7. noise reduction hole; 8. first bolt; 9. second bolt; 10. first fixing slot; 11. first fixing piece; 12. third bolt; 13. second fixing slot; 14. second fixing piece; 15. fourth bolt; 16. mounting base; 17. motor shaft. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0023] A multi-blade fan impeller structure, such as Figure 1 、 Figure 3 、 Figure 5 、 Figure 6As shown, it includes a rear disc 1 and a front disc 2. A fixing block 3 is fixedly connected to the middle of the front side of the rear disc 1. A plurality of first blades 4 are rotatably connected to the outer side of the fixing block 3. The front sides of one end of the plurality of first blades 4 away from the fixing block 3 are fixedly connected to the front disc 2 by first bolts 8. A plurality of first connecting holes are evenly opened in an annular direction on the front disc 2, and the plurality of first connecting holes are all arranged to fit with the first bolts 8. The front disc 2 is connected to the first blades 4 by the first bolt 8. An adjustment mechanism 5 is provided on the rear side of one end of the first blades 4 away from the fixed block 3. The adjustment mechanism 5 includes a swivel 52, a motor 53, a gear 54 and an adjustment block 56. A cavity 51 is provided inside the rear disc 1. The swivel 52 is rotatably connected to the inside of the cavity 51. The motor 53 is fixedly connected to the rear side of the rear disc 1. The output end of the motor 53 extends to the inside of the cavity 51 and is connected to the gear 54 through a coupling. The gear 54 is meshed with the inner side of the swivel 52. A plurality of adjustment slots 55 are provided on the front side of the rear disc 1. The rear sides of the plurality of adjustment slots 55 are connected to the cavity 51. An adjustment block 56 is slidably connected to the interior of the adjustment slot 55. The front end of the adjustment block 56 is fixedly connected to the first blade 4, and the rear end of the adjustment block 56 is fixedly connected to the swivel 52. When the angle of the first blade 4 needs to be adjusted, the motor 53 is started, the first motor 53 drives the gear 54 to rotate, the gear 54 drives the swivel 52 to rotate inside the cavity 51, and the swivel 52 drives the adjustment block 56 to move along the adjustment slot 55. The adjustment block 56 drives the air outlet end of the first blade 4 to move, thereby adjusting the angle of the first blade 4. This allows the fan's air volume, air pressure and other parameters to be changed according to actual conditions, thereby improving the fan's flexibility and adaptability. A mounting seat 16 is welded to the middle of the rear side of the rear disc 1. The rear side of the mounting seat 16 is fixedly connected to the motor shaft 17, and the device is connected to the fan's drive motor via the motor shaft 17.

[0024] like Figure 4 As shown, a plurality of first fixing grooves 10 are evenly opened on the outer side of the fixing block 3 in an circumferential direction, and a first fixing piece 11 is inserted into the inside of the plurality of first fixing grooves 10. The front side of the first fixing piece 11 is fixedly connected to the fixing block 3 by a third bolt 12. The first fixing piece 11 is rotatably connected to the first blade 4 at one end away from the fixing block 3. A first fixing hole is opened on the front side of the first fixing groove 10. The first fixing hole is matched with the third bolt 12. The first fixing piece 11 is inserted into the first fixing groove 10, and then the third bolt 12 is passed through the first fixing hole and connected to the first fixing piece 11, so that the first fixing piece 11 is fixedly connected to the first fixing groove 10, thereby evenly connecting the plurality of first blades 4 to the outer side of the fixing block 3. At the same time, it is convenient to remove and replace the damaged first blade 4 separately without replacing the entire impeller, thereby improving the practicality of the device and reducing the use cost of the enterprise.

[0025] When Example 1 is working, the first fixing member 11 is inserted into the first fixing groove 10, and then the third bolt 12 is passed through the first fixing hole and connected to the first fixing member 11, so that the first fixing member 11 is fixedly connected to the first fixing groove 10, thereby evenly connecting several first blades 4 to the outside of the fixing block 3, and at the same time, it is convenient to remove and replace the damaged first blade 4 separately without replacing the entire impeller, thereby improving the practicality of the device and reducing the company's use cost; when it is necessary to adjust the angle of the first blade 4, start the motor 53, the first motor 53 drives the gear 54 to rotate, the gear 54 drives the rotating ring 52 to rotate inside the cavity 51, the rotating ring 52 drives the adjusting block 56 to move along the adjusting groove 55, and the adjusting block 56 drives the air outlet end of the first blade 4 to move, thereby adjusting the angle of the first blade 4, so that the air volume, air pressure and other parameters of the fan can be changed according to actual conditions, thereby improving the flexibility and adaptability of the fan. Example 2

[0026] Example 2 is based on Example 1, as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, several second blades 6 are rotatably connected to the outer side of the fixed block 3, and the front sides of the ends of the several second blades 6 away from the fixed block 3 are fixedly connected to the front disk 2 through second bolts 9. Several second connection holes are evenly opened in an annular direction on the front disk 2, and the several second connection holes are all arranged to fit with the second bolts 9. The front disk 2 is connected to several second blades 6 by second bolts 9. Several second blades 6 are provided with several noise reduction holes 7 at one end away from the fixed block 3. Several noise reduction holes 7 are evenly arranged. Several second blades 6 are spaced apart from several first blades 4. The length of the second blade 6 is shorter than the length of the first blade 4. The first blade 4 and the second blade 6 cooperate with each other to increase the overall air outlet area of ​​the impeller, so that the overall flow rate of the fan is reduced, thereby reducing the overall noise of the fan, ensuring that the wind pressure generated by the impeller being installed in the fan is not reduced, so that the fan can reduce energy consumption while ensuring the working efficiency of the fan; several noise reduction holes 7 are provided at the air outlet end of the second blade 65, and the noise reduction holes 7 can reduce the turbulence of the airflow wake at the air outlet end of the second blade 6, so that the airflow is discharged in an orderly manner, thereby achieving the effect of reducing noise, thereby reducing the impact of the fan noise on the surrounding environment.

[0027] like Figure 4As shown, a plurality of second fixing grooves 13 are evenly arranged on the outer side of the fixing block 3 in an circumferential direction, and a second fixing piece 14 is inserted into the inside of the plurality of second fixing grooves 13. The front side of the second fixing piece 14 is fixedly connected to the fixing block 3 by a fourth bolt 15. The second fixing piece 14 is rotatably connected to the second blade 6 at one end away from the fixing block 3. A second fixing hole is arranged on the front side of the second fixing groove 13. The second fixing hole is matched with the fourth bolt 15. The second fixing piece 14 is inserted into the second fixing groove 13, and then the fourth bolt 15 is passed through the second fixing hole and connected to the second fixing piece 14, so that the second fixing piece 14 is fixedly connected to the second fixing groove 13, so that the plurality of second blades 6 are evenly connected to the outer side of the fixing block 3. At the same time, it is convenient to remove and replace the damaged second blade 6 separately without replacing the entire impeller, thereby improving the practicality of the device and reducing the use cost of the enterprise.

[0028] When the embodiment 2 is working, the second fixing member 14 is inserted into the second fixing groove 13, and then the fourth bolt 15 is passed through the second fixing hole and connected to the second fixing member 14, so that the second fixing member 14 is fixedly connected to the second fixing groove 13, thereby evenly connecting the plurality of second blades 6 to the outside of the fixing block 3, and at the same time facilitating the removal and replacement of the damaged second blades 6 separately without replacing the entire impeller, thereby improving the practicality of the device and reducing the cost of use of the enterprise; a plurality of second blades 6 are rotatably connected to the outside of the fixing block 3, and the plurality of second blades 6 are spaced apart from the plurality of first blades 4. The length of the second blade 6 is shorter than that of the first blade 4. The first blade 4 and the second blade 6 cooperate with each other to increase the overall air outlet area of ​​the impeller, thereby reducing the overall flow rate of the fan, thereby reducing the overall noise of the fan, and ensuring that the wind pressure generated by the impeller being installed in the fan is not reduced, so that the fan can reduce energy consumption while ensuring the working efficiency of the fan; a number of noise reduction holes 7 are provided at the air outlet end of the second blade 65, and the noise reduction holes 7 can reduce the turbulence of the airflow wake at the air outlet end of the second blade 6, so that the airflow is discharged in an orderly manner, thereby achieving the effect of reducing noise, thereby reducing the impact of fan noise on the surrounding environment.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-blade fan impeller structure, comprising a rear disc (1) and a front disc (2), characterized in that: A fixed block (3) is fixedly connected to the middle of the front side of the rear disc (1), and a plurality of first blades (4) are rotatably connected to the outer side of the fixed block (3). An adjustment mechanism (5) is provided on the rear side of one end of the plurality of first blades (4) away from the fixed block (3). The adjustment mechanism (5) comprises a rotating ring (52), a motor (53), a gear (54) and an adjustment block (56). A cavity (51) is provided inside the rear disc (1), and the rotating ring (52) is rotatably connected inside the cavity (51). The rear side of the rear disc (1) is fixedly connected to the motor (53). The motor (53) is fixedly connected to the rear side of the rear disc (1). The output end of the machine (53) extends to the interior of the cavity (51) and is connected to the gear (54) through a coupling. The gear (54) is meshed with the inner side of the rotating ring (52). The front side of the rear disc (1) is provided with a plurality of adjustment slots (55). The rear sides of the plurality of adjustment slots (55) are all connected to the cavity (51). The interiors of the plurality of adjustment slots (55) are all slidably connected to the adjustment blocks (56). The front end of the adjustment block (56) is fixedly connected to the first blade (4), and the rear end of the adjustment block (56) is fixedly connected to the rotating ring (52).

2. The multi-blade fan impeller structure according to claim 1, characterized in that: The outer side of the fixed block (3) is rotatably connected to a plurality of second blades (6), and a plurality of noise reduction holes (7) are provided at one end of the plurality of second blades (6) away from the fixed block (3). The plurality of noise reduction holes (7) are evenly arranged, and the plurality of second blades (6) and the plurality of first blades (4) are spaced apart from each other. The length of the second blades (6) is shorter than that of the first blades (4).

3. The multi-blade fan impeller structure according to claim 1, characterized in that: The front sides of the ends of the plurality of first blades (4) away from the fixed block (3) are fixedly connected to the front disc (2) via first bolts (8); a plurality of first connection holes are evenly arranged in an annular direction on the front disc (2); and the plurality of first connection holes are all arranged to fit with the first bolts (8).

4. The multi-blade fan impeller structure according to claim 2, characterized in that: The front sides of the ends of the plurality of second blades (6) away from the fixed block (3) are fixedly connected to the front disc (2) via second bolts (9); a plurality of second connection holes are evenly arranged in an annular direction on the front disc (2); and the plurality of second connection holes are matched with the second bolts (9).

5. The multi-blade fan impeller structure according to claim 3, characterized in that: A plurality of first fixing grooves (10) are uniformly formed in a circumferential direction on the outer side of the fixing block (3), and a first fixing member (11) is inserted into the interior of each of the first fixing grooves (10). The front side of the first fixing member (11) is fixedly connected to the fixing block (3) via a third bolt (12), and the end of the first fixing member (11) away from the fixing block (3) is rotatably connected to the first blade (4).

6. The multi-blade fan impeller structure according to claim 4, characterized in that: A plurality of second fixing grooves (13) are uniformly formed in a circumferential direction on the outer side of the fixing block (3), and a second fixing member (14) is inserted into the interior of each of the second fixing grooves (13). The front side of the second fixing member (14) is fixedly connected to the fixing block (3) via a fourth bolt (15), and the second blade (6) is rotatably connected to one end of the second fixing member (14) away from the fixing block (3).

7. The multi-blade fan impeller structure according to claim 1, characterized in that: A mounting seat (16) is welded to the middle of the rear side of the rear disc (1), and a motor shaft (17) is fixedly connected to the rear side of the mounting seat (16).

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