Impeller and vertical multistage pump thereof

• Main Authors: ZHONG SHIZHONG, WU ZHENGZHENG, ZHUO CHENGZHE
• Format: Patent
• Language: Chinese; English
• Published: 15.12.2020
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

The utility model relates to an impeller and a vertical multistage pump with the impeller, and solves the problems of short service life of a bearing, unstable pump operation, large power loss and thelike caused by large pressure on a motor bearing when the impeller works in the prior art, and adopts the technical scheme that the diameter of a front cover plate is greater than that of a rear cover plate; the axis of the front cover plate and the axis of the rear cover plate are located on the same axis. The device has the effects that the diameter of the rear cover plate is changed to be smaller than the size of the front cover plate, so that the volume of an outer cavity of the rear cover plate is larger than that of an outer cavity of the front cover plate; the size of the rear cover plate is smaller than that of the front cover plate, so that the water inlet direction inclines, the pressure acting on the motor bearing is reduced, the service life of the motor bearing is prolonged,noise and vibration are re