BLADE ANGLE ADJUSTABLE FULLY-IMMERSED MOTOR IMPELLER BUILT-IN TUBULAR PUMP

The present invention relates to a blade angle adjustable fully-immersed motor impeller built-in tubular pump. A water inlet horn and a water outlet are connected to front and rear openings of a pump body respectively. A hub is coaXially connected in the pump body through a guide vane. A pump shaft is connected in the hub in a penetration manner and sleeved with an impeller part. The impeller part includes a shaft sleeve and multiple blades. The shaft sleeve is supported and connected to the pump shaft in the penetration manner through a bearing. Inner ends of the multiple blades are circumferentially fixedly connected to a periphery of the shaft sleeve, while outer ends are in interference fit with an inner wall of an outer connecting ring. A rotor of a ring structure is fixedly connected to an outer wall of the outer connecting ring by a bolt. A stator corresponding to the rotor is arranged in the pump body. The pump is simple in structure. Motor quality problems caused by the welding connection between the rotor and the impeller may be solved effectively. In addition, an angle of the blade is adjustable, so that the measured performance of the water pump is improved.