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CN-224228941-U - Axial flow fan capable of adjusting center of gravity of impeller

CN224228941UCN 224228941 UCN224228941 UCN 224228941UCN-224228941-U

Abstract

The utility model belongs to the field of axial flow fans, and particularly relates to an axial flow fan capable of adjusting the gravity center of an impeller. The utility model drives the first balancing weight to move through rotating the threaded rod, the first balancing weight can drive the sliding block to slide on the surface of the limiting rod, the gravity center of the axial flow impeller can be adjusted when the first balancing weight moves, meanwhile, the worm can drive the worm wheel to rotate, the worm wheel can drive the first balancing weight to rotate together through the connecting block, and then the first balancing weight is matched with the movement of the first balancing weight, so that the first balancing weight can move to most of the positions on one side of the axial flow impeller, the effect of adjusting the gravity center is improved, the phenomenon of centrifugal unbalance is not easy to occur when the axial flow impeller rotates, vibration and noise are not caused, and the possibility of faults is reduced.

Inventors

  • LI FEI
  • WEI XIANFANG
  • LI ZHUOLIN
  • LI MEI

Assignees

  • 山西省侯马市鑫丰康风机有限公司

Dates

Publication Date
20260512
Application Date
20250512

Claims (7)

  1. 1. The axial flow fan capable of adjusting the gravity center of the impeller is characterized by comprising a shell (1), wherein the inner cavity of the shell (1) is fixedly connected with a supporting rod (2), the top of the supporting rod (2) is fixedly connected with a motor (3), the surface of an output shaft of the motor (3) is fixedly connected with an axial flow impeller (4), and one side of the axial flow impeller (4) is provided with an adjusting mechanism (5); Adjustment mechanism (5) are including first hollow piece (501), the bottom fixedly connected with of first hollow piece (501) is in the surface of axial compressor impeller (4), the inner chamber rotation of first hollow piece (501) is connected with worm (502), one side rotation of axial compressor impeller (4) is connected with worm wheel (503), the tooth of worm wheel (503) intermeshes with the tooth of worm (502), the inner chamber fixedly connected with connecting block (504) of worm wheel (503), the top rotation of connecting block (504) is connected with threaded rod (505), the surface screw thread connection of threaded rod (505) has first balancing weight (506), the inner chamber fixedly connected with gag lever post (507) of worm wheel (503), one side fixedly connected with slider (508) of first balancing weight (506), the inner chamber sliding connection of slider (508) is in the surface of gag lever post (507).
  2. 2. The axial-flow fan with the center of gravity adjustable impeller according to claim 1, wherein a second balancing weight (6) is arranged on one side of the first balancing weight (506), a second hollow block (7) is fixedly connected to one side of the first balancing weight (506), a third hollow block (8) is fixedly connected to one side of the second balancing weight (6), and bolts (9) are connected to inner cavities of the second hollow block (7) and the third hollow block (8) in a threaded mode.
  3. 3. The axial-flow fan with the center of gravity adjustable impeller according to claim 2, wherein the inner cavity of the first hollow block (501) is provided with a limiting groove (10), the inner cavity of the limiting groove (10) is rotationally connected with a limiting ring block (11), and the inner cavity of the limiting ring block (11) is fixedly connected with the surface of the worm (502).
  4. 4. The axial-flow fan with the center of gravity of the impeller adjustable according to claim 3, wherein one side of the first hollow block (501) is fixedly connected with a damping bearing (12), and an inner cavity of the damping bearing (12) is fixedly connected with the surface of the worm (502).
  5. 5. The axial-flow fan with the center of gravity adjustable impeller according to claim 4, wherein the surface of the axial-flow impeller (4) is provided with a hollow groove (13), an inner cavity of the hollow groove (13) is rotationally connected with a T-shaped rotating block (14), and one side of the T-shaped rotating block (14) is fixedly connected with one side of a worm wheel (503).
  6. 6. The axial-flow fan with the center of gravity adjustable impeller according to claim 5, wherein the threaded rod (505) is fixedly connected with a fixed block (15) close to the outer side surface of the connecting block (504), and an anti-skid groove (16) is formed in the surface of the fixed block (15).
  7. 7. The axial-flow fan with the center of gravity of the impeller being adjustable as claimed in claim 6, wherein the top of the threaded rod (505) is fixedly connected with a stop block (17), and the diameter of the stop block (17) is larger than that of the threaded rod (505).

Description

Axial flow fan capable of adjusting center of gravity of impeller Technical Field The utility model relates to the field of axial flow fans, in particular to an axial flow fan with an adjustable impeller gravity center. Background The axial flow fan has very wide application, namely, a fan with the air flow direction being the same as the axis of the fan blade, such as an electric fan, and an air conditioner external fan is an axial flow running fan. This is called "axial flow" because the gas flows parallel to the fan axis. Axial fans are commonly used in applications where flow requirements are high and pressure requirements are low. The axial flow fan is fixed at a position and moves air; In the prior art, an axial flow fan mainly depends on blades on an impeller to suck air from an air inlet, and the air is discharged along the axial direction under the pushing of the blades, but in the manufacturing process of the impeller of the axial flow fan, the centrifugal force is unbalanced and the gravity center is deviated when the impeller is rotated due to the uneven tolerance or the quality of the blades, so that vibration and noise are caused, and the impeller is easy to break down for a long time. Disclosure of utility model In order to make up the deficiency of the prior art, the impeller of the axial flow fan is easy to cause unbalanced centrifugal force and deviation of the gravity center during rotation due to tolerance or uneven blade mass in the manufacturing process, thereby causing vibration and noise, and the problem of easy occurrence of faults for a long time. The axial flow fan comprises a shell, wherein a supporting rod is fixedly connected to an inner cavity of the shell, a motor is fixedly connected to the top of the supporting rod, an axial flow impeller is fixedly connected to the surface of an output shaft of the motor, and an adjusting mechanism is arranged on one side of the axial flow impeller; The adjusting mechanism comprises a first hollow block, the bottom of the first hollow block is fixedly connected with the surface of an axial flow impeller, a worm is rotationally connected to an inner cavity of the first hollow block, a worm wheel is rotationally connected to one side of the axial flow impeller, teeth of the worm wheel are meshed with teeth of the worm, the inner cavity of the worm wheel is fixedly connected with a connecting block, the top of the connecting block is rotationally connected with a threaded rod, a first balancing weight is in threaded connection with the surface of the threaded rod, a limiting rod is fixedly connected with the inner cavity of the worm wheel, a sliding block is fixedly connected to one side of the first balancing weight, and the inner cavity of the sliding block is slidably connected with the surface of the limiting rod. Preferably, a second balancing weight is arranged on one side of the first balancing weight, a second hollow block is fixedly connected to one side of the first balancing weight, a third hollow block is fixedly connected to one side of the second balancing weight, and bolts are connected with inner cavity threads of the second hollow block and the third hollow block. Preferably, the inner cavity of the first hollow block is provided with a limit groove, the inner cavity of the limit groove is rotationally connected with a limit ring block, and the inner cavity of the limit ring block is fixedly connected with the surface of the worm. Preferably, one side of the first hollow block is fixedly connected with a damping bearing, and an inner cavity of the damping bearing is fixedly connected to the surface of the worm. Preferably, the surface of the axial flow impeller is provided with a hollow groove, the inner cavity of the hollow groove is rotationally connected with a T-shaped rotating block, and one side of the T-shaped rotating block is fixedly connected with one side of the worm wheel. Preferably, the threaded rod is fixedly connected with a fixed block close to the outer side face of the connecting block, and an anti-skid groove is formed in the surface of the fixed block. Preferably, a stop is fixedly connected to the top of the threaded rod, and the diameter of the stop is larger than that of the threaded rod. The utility model has the advantages that: According to the axial flow fan, the first balancing weight is driven by the rotating threaded rod to move, the first balancing weight can drive the sliding block to slide on the surface of the limiting rod, the gravity center of the axial flow fan can be adjusted when the first balancing weight moves, the worm can also be rotated to drive the worm wheel to rotate, the worm wheel can drive the first balancing weight to rotate together through the connecting block, and the first balancing weight is matched with the movement of the first balancing weight, so that the first balancing weight can move to most of the positions on one side of the axial flow fan, the gravity center a