The series of slurry pump in hydraulic design, structural design and other aspects, the flow parts are made of high chromium wear resistant alloy, light weight, reasonable structure, reliable operation, low vibration, low noise, easy maintenance and other remarkable characteristics. The pump body adopts double pump shell structure, convenient replacement of flow parts, according to the pressure needs of the outer pump shell with ball wear cast iron, the inner shell with high chromium anti-wear discount cast iron or cast steel.