The pump has the advantages of conveying liquid containing large solid particles without blocking; conveying liquid containing fiber and suspended matter without entanglement; conveying gas-bearing liquid without breaking the flow. It is especially suitable for transferring solid-liquid mixture with maximum media temperature of 80℃. The particle size of the solid particles is 80% of the outlet caliber, and the weight concentration is 60%. It is widely used in rubber, chemical fiber, paper making, sugar, fish industry and urban industrial and mining sewage and mining, metallurgy, electric power and other sectors to transfer solid-liquid mixture.