Longzhong heavy dewatering screen is researched by luoyang longzhong heavy industry according to the market and customer demand, which is highly clean, reasonable structure, large capacity, low power consumption, etc. Therefore the dewatering screen is very popular. In the process of sand washing, dewatering screen device is a necessary part. However, the amount of sand soil, the quality of the equipment and the operation of the dewatering screen will affect the production of the dewatering screen. Therefore, when using the equipment, operators should pay attention to the three aspects in order to carry out the efficient work of dewatering screen.