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A low-noise device air-cooled mine axial flow fan

An axial flow fan and air-cooled technology, which is applied in the direction of pump devices, axial flow pumps, transmission devices, etc., can solve the problems such as the fan cannot operate normally

Active Publication Date: 2021-09-14
山东恒洋自动化科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So when the surge occurs, the fan can hardly run normally

Method used

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  • A low-noise device air-cooled mine axial flow fan
  • A low-noise device air-cooled mine axial flow fan
  • A low-noise device air-cooled mine axial flow fan

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Such as figure 1 As shown, a low-noise device air-cooled mine axial flow fan according to the present invention includes a collector part, a main body part, a blade fin part, a first diffuser and a second diffuser, and the collector The main unit, the main unit, the wing unit, the first diffuser and the second diffuser are coaxially installed together from front to rear; a junction box is arranged on the upper part of the main unit, and a drive motor is installed in the main unit through a motor bracket; the said The blade wing part includes a hollow hub outer casing with an inverted "T" shape in cross section. The motor shaft of the drive motor is inserted and fixed in the motor shaft insertion hole. Such as figure 2 As shown, a plurality of blade-fin insertion holes are annularly opened on the outer circumference of the large-diameter part, and several blade-fins are radially installed in each blade-fin insertion hole; an automatic blade-wing angle adjustment devic...

Embodiment 2

[0068] In this embodiment, an air volume adjusting device is provided on the rear end surface of the outer cylinder of the second diffuser, and the air volume adjusting device includes a front air net and a rear air net.

[0069] Such as Figure 10 As shown, the front air grid includes a front outer ring grid and a front inner ring grid, the front outer ring grid and the front inner ring grid are coaxial and coplanar, and the front outer ring grid and the front inner ring grid The frames are connected and fixed as a whole by four network frame connecting rods; a mesh inner air filter is set in the front inner ring frame, and several straight air filters are radially arrayed between the front outer ring frame and the front inner ring frame. Striped front fairing.

[0070] Such as Figure 11 As shown, the rear air grid includes a rear outer ring network frame and a rear inner ring network frame, the rear outer ring network frame and the rear inner ring network frame are coaxia...

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PUM

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Abstract

The utility model relates to an air-cooled mine axial flow fan with a low-noise device, which belongs to the field of mine fan equipment. It is characterized in that: the current collector part, the main part, the wing part, the first diffuser and the second diffuser are coaxially installed together from front to back; a junction box is arranged on the upper part of the main part, and the motor The drive motor is installed on the bracket; the blade wing part includes a hollow hub shell with an inverted "T" shape in cross section; an air volume adjustment device is arranged on the rear end surface of the second diffuser outer cylinder, and the air volume adjustment device includes a front wind net and backwind net. The invention can reduce or avoid the vibration and noise caused by the surge of the fan during operation.

Description

technical field [0001] The invention belongs to the field of mine fan equipment, and in particular relates to an air-cooled mine axial flow fan with a low-noise device. Background technique [0002] When the fan vibrates violently, the noise of the fan will be too loud, and in severe cases, the structure of the fan will be damaged, resulting in a shortened service life. Vibration not only produces noise, but also increases the body temperature. Generally, there are many reasons for the vibration of the fan, including improper installation to make the fuselage unstable, or the surge of the fan resulting in severe noise and vibration. If the noise and vibration caused by improper installation, the staff can solve it by overhauling and reinstalling. However, the problems caused by surge are not easy to solve. [0003] Surge refers to the phenomenon that when the fan with the "hump" shaped Q-H performance curve works to the left of the critical point of the curve, that is, wh...

Claims

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Application Information

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IPC IPC(8): F04D29/66F04D29/36F04D29/54F04D27/02F04D19/00F04D25/08F04D29/70F16H1/20
CPCF04D19/002F04D25/08F04D27/0246F04D29/362F04D29/541F04D29/666F04D29/703F16H1/20
Inventor 吕金磊孔军勇邵在平
Owner 山东恒洋自动化科技有限公司