Ball mill acoustic hood noise control method

A technology for noise control and sound insulation cover, which is applied to sound equipment, special data processing applications, instruments, etc., can solve the problems of single material and difficult noise control effect of ball mill, and achieves technical requirements, remarkable sound insulation effect and economic benefits. obvious effect

Inactive Publication Date: 2016-02-24
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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Problems solved by technology

However, at present, the material of the sound insulation cover of the ball mill is relatively simple, and the structure is relatively simple. Usually, materials such as asphalt base and rubber are used as damping and vibration-absor

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  • Ball mill acoustic hood noise control method
  • Ball mill acoustic hood noise control method
  • Ball mill acoustic hood noise control method

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Example Embodiment

[0019] The present invention will be described in detail below in conjunction with embodiments.

[0020] The present invention takes the motor and reducer of the ball mill as the research object. After analyzing the noise characteristics of the ball mill, it proposes a noise reduction scheme in which a sound insulation cover is installed outside the motor as the main noise reduction method. The sound insulation cover is built by ANASYS finite element software. The meta-model analyzes the noise reduction effect of the sound insulation cover using the broadband composite sound absorption structure, and points out the inadequacy of the noise reduction effect in some areas of the sound insulation cover of this structure. According to the measured noise signal, analyze its frequency spectrum to determine the main frequency of noise.

[0021] 1 Sound insulation cover design: After the actual test and analysis of the ball mill site, it is known that the main factor causing the environment...

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Abstract

The invention relates to a noise control method, in particular to a ball mill acoustic hood noise control method. The ball mill acoustic hood noise control method includes: performing ball mill noise characteristic analysis by taking a motor and a speed reducer of the ball mill as objects, establishing an acoustic hood finite element model by ANASYS finite element software, analyzing to adopt an acoustic hood of a broadband composite acoustic absorption structure for denoising, mounting the closed acoustic hood on the motor of the ball mill, optimizing the shape of the acoustic hood, and subjecting the acoustic hood to finite element analysis and calculation so as to achieve noise control of a ball mill house, wherein when the acoustic hood is mounted, a distance is reserved between the inner wall of the acoustic hood and the motor to decrease coupling resonance generation possibility, and vibration isolation treatment is performed among the acoustic hood, the motor and a motor base to change rigid connection into elastic connection. The ball mill acoustic hood noise control method has the advantages that the ball mill acoustic hood of the improved broadband composite acoustic absorption structure is remarkable in acoustic insulation effect, and denoising performance of the acoustic hood is improved.

Description

technical field [0001] The invention relates to a method for controlling mechanical noise, in particular to a method for controlling noise of a ball mill sound insulation cover. Background technique [0002] Ball mill is a high-fine grinding mechanical equipment widely used in industrial production at home and abroad. The ball mill has a wide range of applications and is widely used in ore dressing, cement building materials and chemical industries. However, the ball mill will produce a lot of noise during the work process. People nearby are very harmful; when the barrel of the ball mill is exposed, the noise value can be as high as 110dB(A), which is one of the most serious noise sources of noise pollution generated by mechanical equipment in various industrial productions in the world today. Therefore, the noise control of ball mills has become one of the topics that scholars at home and abroad have paid close attention to, and at the same time, certain effects have been o...

Claims

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Application Information

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IPC IPC(8): G10K11/162B02C17/18G06F17/50
CPCB02C17/18G06F30/00G10K11/162
Inventor 刘欢李金凤童炳善侯勇段家鑫
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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