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Draught fan capable of achieving rotor counterweight balance and counterweight balance method thereof

A counterweight balance and rotor technology, applied in the field of machinery, can solve problems such as failure to work, vibration, etc., to achieve the effect of ensuring the balance of counterweight

Active Publication Date: 2014-11-05
NANJING CIGU TECH CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the remaining unbalance of the rotor does not reach the design index range, it will cause serious vibration and even cause failure to work

Method used

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  • Draught fan capable of achieving rotor counterweight balance and counterweight balance method thereof
  • Draught fan capable of achieving rotor counterweight balance and counterweight balance method thereof
  • Draught fan capable of achieving rotor counterweight balance and counterweight balance method thereof

Examples

Experimental program
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Effect test

Embodiment Construction

[0023] Please refer to figure 1 As shown, the fan of the present invention includes a rotor 1 ; an impeller 2 mounted on the rotor 1 ; and a guide cone 3 . Wherein the central shaft hole of the impeller 2 is matched with the rotor 1, wherein the central shaft hole of the impeller 2 is aligned with the rotor shaft, the impeller 2 is installed in the direction of the rotor 1, and then the impeller 2 is installed and fixed on the rotor 1 through the key 11. A plurality of first weight screw holes 20 are recessed at equal intervals along the same circumferential direction on the upper end surface of the impeller 2, and first weight screws 21 and / or second weight screws are installed in the first weight screw holes 20. Weight screw 22, wherein the first weight screw 21 and the second weight screw 22 can be respectively located in different first weight screw holes 20, and there can also be a first weight screw 21 and a second weight screw 22 are installed in one weight screw hole ...

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Abstract

The invention discloses a draught fan capable of achieving rotor counterweight balance and a counterweight balance method thereof. The draught fan comprises a rotor, an impeller mounted on the rotor, a flow guide cone, a cooling fan and a fastening nut. The lower section part of the flow guide cone is in threaded connection with the upper tail end of the rotor, the cooling fan is mounted at the lower tail end of the rotor, the fastening nut is mounted on the rotor and located at the position above the cooling fan, the upper end face of the impeller is concaved to form a first counterweight screw hole, a first counterweight ring is integrally formed on the lower end face of the impeller, the lower end face of the cooling fan is concaved to form a second counterweight screw hole, a third counterweight screw hole is formed in the peripheral direction of the fastening nut, a second counterweight ring is integrally formed in the position, between the impeller and the fastening nut, of the rotor, a first counterweight screw and a second counterweight screw are mounted in the first counterweight screw hole, a third counterweight screw is mounted in the second counterweight screw hole, and a fourth counterweight screw is mounted in the third counterweight screw hole.

Description

Technical field: [0001] The invention relates to a blower fan capable of realizing counterweight balance of a rotor and a counterweight balancing method thereof, belonging to the technical field of machinery. Background technique: [0002] The rotor in the fan is its core component. When the fan is running normally, the rotor rotates at a speed of more than 30,000 revolutions per minute. Due to errors in materials, processing, assembly, etc., a newly installed rotor must have a certain imbalance (mass center axis and geometric center axis do not coincide), which will cause the rotor to generate centrifugal force during rotation. Therefore, after the rotor assembly is completed, it must be balanced with counterweight (tested on a dynamic balancing machine, and then subtract some mass or add some mass at certain positions to ensure that the remaining unbalance is within an acceptable index range Inside). If the remaining unbalance of the rotor does not reach the design index...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/66
Inventor 丁嵩张海李健吴立华董继勇
Owner NANJING CIGU TECH CORP LTD
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