PLUNGER WATER PUMP

• Main Authors: LIU, YINSHUI, ZHU, BIHAI, HE, XIAOFENG, JIANG, ZHUO, WU, DEFA, MAO, XUYAO, GUO, ZHIHENG, CHEN, JINGYUE
• Format: Patent
• Language: English; French; German
• Published: 12.09.2012
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

A plunger water pump comprises a chamber, a rotating main shaft (1) and a plunger distributing unit. The plunger distributing unit comprises a distributing valve assembly (13), a plunger-shoe assembly (23) and a support valve assembly. The chamber is separated into a high pressure chamber (16) and a low pressure chamber (19) being mutually independent by the plunger-shoe assembly (23). The high pressure chamber (16) fluidly communicates with the distributing valve assembly (13), and the low pressure chamber (19) fluidly communicates with the support valve assembly. The plunger-shoe assembly (23) is driven to reciprocate by the rotating main shaft (1), thereby urging the distributing valve assembly (13) to cooperate with the support valve assembly, making the distributing valve assembly (13) to intake and discharge water through the water pump inlet (51) and outlet (50), and at the same time making the support valve assembly to provide fluid lubrication for the rotating unit. The high pressure water discharged from the superhigh pressure pump is independent of the low pressure water for hydrostatic pressure supporting and lubricating, which ensures the volumetric efficiency of the water pump in the superhigh pressure condition and the fluid support and lubrication of the friction pairs in the high velocity and overload condition, and prolongs the service life of the water pump.