FINE AGGREGATE STORAGE TANK

PURPOSE:To reduce the irregularity of the surface moisture percentage of a fine aggregate, by providing a drain port to the peripheral surface of the lower end of the side wall of a storage tank or the bottom surface of said tank and setting the bottom surface so as to downwardly incline the same toward the drain port and connecting a drain pipe to a hopper so as to allow the same to communicate with the filter material provided to the peripheral edge part of said hopper to guide said drain pipe to the outside of the bottom part of the storage tank. CONSTITUTION:An inclined bottom surface 12, which has a gradient lowering the position of the hopper 2 provided to the central part of the bottom surface of a storage tank 1 toward the side surface 11 of the storage tank 1, is formed to the bottom surface of said tank 1 and openings are discontinuously provided to the lower end peripheral edge of the side surface 11 to provide a net material 13 inside the side surface 11 and the water flowing down to the inclined bottom surface 12 is drained to the drain passage 14 of the outside. The funnel- shaped hopper 2 is mounted to the opening 15 formed to the top part of the inclined bottom surface 12 so as to form the stepped surface 16 to the mount part thereof and a drain pipe 5 is mounted so as to communicate with said surface 16 and the lower end of said pipe 5 is exposed to the outside. The space region between the stepped surface 16 and the upper end of the hopper 2 and the drain pipe 5 are filled with a filter material 4 and a lid material 51 composed of a metal net is mounted to the lower end of the drain pipe 5. A gate 6 having a curved shape is provided in a freely slidable manner and a large number of drain holes 61 are provided to the gate 61 and a filter material 62 is mounted to the under surface of the gate 6 and a water gathering container 63 is provided under the gate 6.