Impeller inlet supercharging low-cavitation double suction pump

• Main Authors: WU WEIQIAO, YU ZHONGBIN
• Format: Patent
• Language: Chinese; English
• Published: 11.08.2023
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

An impeller inlet pressurization low-cavitation double suction pump comprises a pump shell, a pump shaft is arranged in the pump shell in a penetrating mode, an impeller is connected to the pump shaft through a key block, sealing frames are installed at the two ends of the pump shell, a bearing seat is connected to the outer side of the pump shell, the two sides of the pump shaft penetrate through the sealing frames to be connected with the bearing seat, and a bearing is installed in the bearing seat to be connected with the pump shaft. A mechanical seal is arranged in the sealing frame and connected with the pump shaft, a four-way pipe is installed at the upper end of the pump shell, a pipeline of the four-way pipe is connected with a flushing pipe, the flushing pipe is connected into the sealing frame and the shell, and the impeller inlet is pressurized while the mechanical seal is flushed. According to the method, the water pump net positive suction head can be further reduced on the basis that the cavitat