Well pumping apparatus

Claim 1

In combination with a water well pumping apparatus having an engine driving a reel mounted on a base disposed adjacent a well to be pumped, a plurality of hoses including a well fluid discharge hose connected at one end with said reel and windable thereon, a hydraulic pump driven by said engine and connected with a pair of hoses of said plurality of hoses and having a generally cylindrical pump assembly adapted to be connected at one end with the other end of said plurality of hoses and lowered vertically into the well to be pumped, the pump assembly having an impeller equipped pump contained by a pump housing at its depending end portion, at least one fluid elevating staging means coaxially connected with the upper end of the pump housing and including a coaxial pump drive shaft connected with the impeller at the depending end portion of the pump drive shaft and having a hydraulic motor drivably connected with the upper end of the pump drive shaft, the improvement comprising: pump drive shaft support means including a centrally bored thrust body coaxially surrounding the depending end portion of said pump drive shaft and connected with said pump housing, said thrust body having a counterbore in its depending end; thrust bearing means secured within the thrust body counterbore said thrust bearing means including a thrust plate having a socket nesting and supporting the depending end portion of said pump drive shaft, a thrust plate cap secured to the depending end of said thrust body, and, a thrust bearing interposed between said thrust plate and said thrust cap; hydraulic motor mounting means including an apertured hydraulic motor mounting plate having a depending annular wall coaxially connected with said staging means and surrounding the upper end portion of said pump drive shaft; a bushing receiving sleeve coaxially disposed within said annular wall; a bushing surrounding the upper end portion of said pump drive shaft including a stem portion coaxially received by said staging means and having an upstandng head portion at least partially disposed within said bushing sleeve; sealing means comprising waterproof sealing rings interposed between said bushing head and said bushing sleeve and between said bushing stem and said pump drive shaft, respectively, said bushing head having an annular groove in its wall surface surrounding said pump drive shaft and having a lateral port communicating with the groove, said motor mounting plate annular wall having a lateral port coaxially aligned with the bushing head port; a drain tube interconnecting the lateral ports; a hydraulic motor surrounding sleeve coaxially secured to said motor mounting plate; and, a motor mounting and hose connecting cap overlying the end of said motor mounting sleeve opposite said motor mounting plate.