The noise reduction of machine-made sand production line can be started from equipment optimization, transmission path control, personnel protection and accessories maintenance. The specific measures and implementation suggestions are as follows:

Equipment optimization design

Adopt low-noise design: In the design stage of equipment such as sand making machine, use sound-absorbing materials, optimize equipment structure, reduce direct contact between metal and metal, and reduce the noise generated by mechanical vibration. For example, the sand making machines such as VSI5X and VSI6X developed by Liming Heavy Industry use imported wear-resistant materials and international brand bearings, which reduce energy consumption and noise.

Select low-noise equipment: In equipment selection, try to choose low-noise equipment, such as low-noise sand making machine, crusher, etc.

Install soundproof cover or soundproof screen: Install soundproof cover or soundproof screen around the main noise source equipment such as sand making machine and crusher to effectively isolate the internal noise of the equipment and reduce the impact on the surrounding environment.

Install vibration absorption system: Install a suitable vibration absorption system, such as springs or rubber gaskets, to reduce the oscillation noise generated by components such as drive shafts and rollers when running at high speed.

Use noise reduction materials: Use sound-absorbing and sound-insulating materials such as porous materials and rubber materials inside and around the equipment to improve the absorption and isolation effect of noise.

Control of transmission path

Reasonable selection of terrain: In the selection of terrain for the sand and gravel production line, attention should be paid to staying away from crowded areas, especially in the design and planning, it is necessary to make full use of terrain and objects, such as hillsides, hills, woods and other natural environments, to block the noise transmission path according to local conditions.

Closed production: The production line is configured as a fully closed or semi-closed type, so that the dust and noise pollution of the production line can be effectively controlled.

Sound insulation treatment: Using the principle of sound propagation, targeted sound insulation means are used to block noise. Sound insulation board is an effective means of reducing noise from the medium transmission path. High-density materials should be used. According to the principle of sound propagation, in cross-density transmission, the greater the difference in density between the two media, the worse the effect of sound transmission. The sound transmission is controlled by reflection and blocking, so as to achieve the purpose of noise reduction. The construction party needs to set up soundproof sheds in key areas based on the actual location of the noise source of the production line, and use soundproof panels to seal and enclose the roof and surrounding walls.

Greening noise reduction: Greening is carried out outside the workplace to reduce the noise transmitted to the outside through its shielding effect.

Operator protection

Take a rotation system to operate: reduce the working time of workers entering the noise area.

Wear protective tools: During the operation, workers should try to wear special soundproof tools such as earplugs and helmets to reduce the harm of noise to people.

Accessories inspection and maintenance

Fastening parts: Operators should tighten all parts before the equipment is operated to avoid additional vibration and noise caused by loose parts.

Select alternative parts: Use rubber springs to replace the vibration springs of the screening machine; use rubber screen plates or polyurethane screen plates with low impact noise to replace the traditional punching steel screen plates and steel woven screens.

Adding lubricating grease: Add an appropriate amount of lubricating grease to the moving parts of the equipment to reduce the friction resistance of the equipment relative to the moving parts and reduce the noise caused by friction.

Regular maintenance: Regularly maintain and service the sand making machine and other equipment, check and replace worn parts, keep the equipment in good operating condition, and reduce noise.