| 摘要 |
<p>SUBMERSIBLE PUMP DISCHARGE HEAD A discharge head for a submersible pump includes a plastic body having an internally threaded neck for receiving a tapered threaded end of a fluid delivery pipe and a metal shell surrounding and engaging the neck to reinforce the neck against the radial forces developed by the tapered end of the pipe as it is tightened. An annular shoulder extends radially outward and downward from the neck and includes a pair of apertured lugs, each having a pair of laterally extending detents. The shell includes a shoulder corresponding to the annular shoulder and a pair of slots for receiving the lugs and for snapping down over the detents to aid in retaining the shell on the body. In one embodiment of the invention, a skirt extends downwardly from the annular shoulder and includes threads for connection with corresponding threads on a casing of the pump section of the pump. In an alternate embodiment, a flange extends downwardly from the shoulder of the discharge head shell along the skirt and defines the threads that mate with the threads of the pump section casing.</p> |
