Two-stage blade adjusting mechanism for opposite-rotating axial flow fan

A blade adjustment and adjustment mechanism technology, applied in axial flow pumps, machines/engines, mechanical equipment, etc., can solve problems such as poor synchronization and complex structure, and achieve the effects of compact structure, reduced energy consumption, and reduced ventilation resistance.

Inactive Publication Date: 2016-06-15
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The specific technical problem to be solved by the present invention is the problem of complex structure and poor synchronization when using a mechanical adjustment mechanism to adjust the angle of the two-stage blades of the counter-rotating axial flow fan, and provides a two-stage blade adjustment mechanism for the counter-rotating axial flow fan

Method used

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  • Two-stage blade adjusting mechanism for opposite-rotating axial flow fan
  • Two-stage blade adjusting mechanism for opposite-rotating axial flow fan

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Embodiment Construction

[0016] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0017] as attached figure 1 And attached figure 2 As shown, the implementation of the present invention provides a two-stage blade adjustment mechanism for counter-rotating axial flow fans. The adjustment mechanism is coaxially arranged, and the blade adjustment operation shaft 1 is extended to the outside of the fan cylinder for easy adjustment. The specific structure The implementation is that the first bevel gear 2 is fixed on the bottom end of the leaf adjustment operation shaft 1, and the second bevel gear 3 is engaged with the second bevel gear 3, and the second bevel gear 3 is meshed with the split sleeve 4 again, and the first bevel gear 2 and the second bevel gear are engaged again. The rotary motion of the bevel gear 3 is transformed into a linear motion, causing the axial translation disk to generate an axial displacement, and t...

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Abstract

The invention discloses a two-stage blade adjusting mechanism for an opposite-rotating axial flow fan. A blade adjusting operation shaft is adjusted to drive a pair of bevel gears to transmit power to a threaded pair coaxial with a transmission shaft; then the threaded pair is used for converting rotation movement of the bevel gears into linear movement to push a thrust disc in a hub, and therefore the blade installation angle of a first impeller is adjusted; and power is transmitted through a spacer bush, and the blade installation angle of a second impeller is adjusted. Thus, synchronization adjustment and arbitrary angle adjustment of the two-stage blade installation angles is achieved. The mechanism is simple and compact in structure, low in manufacturing and maintaining cost and capable of being widely applied to large, medium and small size opposite-rotating axial flow fans.

Description

technical field [0001] The invention relates to a blade adjusting mechanism of a counter-rotating axial-flow fan, in particular to a two-stage blade adjusting mechanism of a counter-rotating axial-flow fan driven by machinery. Background technique [0002] A reasonable ventilation system should have the characteristics of a simple ventilation system. It is necessary to ensure the rationality of the ventilation system as much as possible. It is necessary to adjust the ventilation equipment according to the actual working conditions, so as to achieve the purpose of safe production. The quality of the ventilation equipment has a very important impact on the ventilation effect. Most of the existing axial flow fans with adjustable blades adopt hydraulic drive to adjust the installation angle of the blades. The hydraulic system includes pump stations, pipelines, servo valves, servo cylinders, etc. A considerable part of the system needs to be specially made, the process is compl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/36
CPCF04D29/36F04D19/007F04D19/002F04D19/024
Inventor 寇子明卫进高贵军张静刘晶幸欣
Owner TAIYUAN UNIV OF TECH
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