Sand and gravel production line flow: the stones are uniformly sent to the jaw crusher by the vibrating feeder for coarse crushing, the coarse crushed materials are sent to the sand making machine by the belt conveyor for further crushing, the fine crushed materials are sent to the vibrating screen for screening, the materials meeting the granularity requirements of finished products are sent to the sand washing machine for cleaning, and the cleaned finished products are output by the finished product conveyor belt; Materials that do not meet the granularity requirements of finished products are returned to the sand making machine from the vibrating screen for re-processing, forming a closed cycle for many times. The granularity of finished products can be combined and graded according to users' needs. If dry production process is selected, it can be equipped with coarse and fine powder separator and dust removal equipment.

Therefore, the equipment of gravel production line is generally composed of feeder, crusher, conveyor, sand making machine and sand washing machine.