The methods of reducing the vibrating feeder noise

The Vibrating feeder is widely used in metallurgy, coal, electric power, chemical industry, building materials, light industry and food industry. It has experienced the development of electromagnetic vibration, motor vibration and mechanical vibration.

Vibrating feeder combined with other equipments, achieve feeding, ingredients, quantitative packaging and process automation in metallurgical mines, mainly used in ore dressing, transfer loading, and mineral processing broken feed. In the coal mine, it is mainly used in quantitative packaging scale feeding mechanism and quantitative packaging system. In the packaging industry, it is mainly used in quantitative packaging scale feeding system and quantitative packaging system. In cement industry, it was used for the concrete mixing station feeding; In the chemical industry, it mainly used for the quantitative production of fertilizer to the material.

Most of Vibrating feeder noise is above 70dB, analysis its noise source, the main noise is from the vibration motor imbalance, relative movement between the relative motion of the body, feeder beams, side panels and other steel components of elastic Vibration, the material on the impact to the trough floor and the coil spring vibration collision. The analysis of the vibration frequency of vibrating feeder shows that when the frequency of the exciter is close to the natural frequency of the elastic at some stage, which it will cause strong vibration and noise of the trough elastomer. The proposed reducing noise measures in the existing research mainly use small size and high precision bearings, thus slowing the impact between the inner and outer rings and the rolling body; Appropriate rigidity is applied to the crosshead and side plates of the feed through to reduce acoustic radiation caused by elastic vibrations. Using rubber and other non-metallic materials, such as rubber composite springs and flexible coupling is to reduce the direct impact of steel parts, and the sound absorption to reduce noise.