Large flow series of cold water washing machine is widely used in a variety of situations of various construction, civil engineering, mining, quarrying plant etc.. The high performance and low noise diaphragm pump drive belt and reliable, solid particles can even water containing 3/32 diameter "of normal use, after cleaning the produced sewage can be recycled. The washing machine through the injection mechanism of high pressure and large flow can be quickly removed a large area of the sludge, dirt, high cleaning efficiency of the site promotion, fully meet the cleaning requirement.