Volumetric sewage pump for ship

The utility model discloses a volumetric sewage pump for a ship. The volumetric sewage pump comprises a pump cover, an inducer, a pump body, a swash plate wheel, a shaft seal, a pump cover, a bearingseat and a pump shaft, the pump body is a three-way thin-wall cylinder, an upward radial extending outlet is located in the middle section of the horizontally-arranged cylinder, and a swash plate wheel is sleeved with a section of pump shaft located in the cylinder of the pump body. A circular through hole reserved in the middle of the end face of the pump cover forms an inlet of the pump body, the inlet is matched with an inducer arranged on the pump shaft, and a front pressurization structure located at the pump inlet is directly formed. The inner cavity of the pump body is simple in structure, a convex or curved component is not arranged, fibrous dirt is contained in a working medium during operation, and the problem that a moving part is wound is solved. Due to the adoption of the structure, the problem of eas