Sewage suction device of culture pond with arc-shaped bottom

The utility model discloses a sewage suction device of a culture pond with an arc-shaped bottom. The sewage suction device is applied to regular cleaning and maintenance of a circulating water culture pond. The dirt suction device comprises an aluminum rod, a dirt suction brush head arranged at the end of the aluminum rod, three sets of hoses, connectors fixedly connected between every two adjacent sets of hoses, a water pump communicated with the corresponding hose, a recovery box communicated with the water pump through the corresponding hose, and a mesh bag fixedly installed in the recovery box. And one group of hoses are fixedly arranged at the central position of the dirt suction brush head in a penetrating manner and penetrate through the aluminum rod. The dirt suction brush head is fixed to the aluminum rod through a screw and the clamping groove, and a dirt inlet communicated with the corresponding hose is formed in the dirt suction brush head in a penetrating mode. The device is convenient to assembl