The utility model belongs to oil exploration and development comprehensive mud logging equipment monitoring technology research field especially relates to well drilling export flow measuring device'sbelt cleaning device. It reduces line arrangment when guaranteeing the cleaning performance, practice thrift the water source. Including submerged pump, liquid reserve tank and sieve sand bucket, theliquid reserve tank is a rectangle box, and this box upper surface is provided with an annular pipe connector just on the upper surface, the position relative with annular pipe connector has offeredthe circular port, the box upper surface still is provided with one and puts pump hole, the barrel head of sieve sand bucket is a screen cloth, the submerged pump is located the liquid reserve tank through the entrance point of putting pump hole and putting into liquid reserve tank, submerged pump, and the submerged pump fixed plate of this submerged pump places on the box upper surface, and thissubmerged pump fixed plate passes through with the box upper surface that the bolt is detachable to be connected, the sieve sand bucket is placed in annular pipe connector, and the external diameter that sieves the sand bucket is greater than the aperture of circular port in the annular pipe connector, and the sieve sand bucket is spacing in the liquid reserve tank upper surface.