Reciprocating piston pump serviceable without tools

摘要

The “no tools” pump removal system comprises a bearing housing attached to the drive housing. The bearing housing has a hinged door that when opened allows removal of the pump pin and then the pump. The bearing housing is provided with a latch assembly and a handle. A safety latch retains the handle in place during operation and until it is desired to remove the pump.

主权项

1. A reciprocating piston pump for attachment to a reciprocating drive and having a reciprocating rod, a cylinder and a bearing housing, the improvement comprising a door attached to said bearing housing so as to releasably sandwich said cylinder between said bearing housing and said door and a latch mechanism configured to secure said door to said bearing housing, said cylinder comprising a cylindrical shoulder configured to mate with said bearing housing and said shoulder comprising upper and lower ends and said bearing housing comprises a shoulder that bears against said cylinder upper shoulder end, said door comprising an annular groove configured to mate with and retain said cylinder upper and lower shoulder ends.