| 摘要 |
A dual inline double acting plunger arrangement is particularly adapted for pumping thick slurries and includes a hollow cylinder divided into two closed chambers by a partition. A first plunger is disposed in a first chamber and a second plunger is disposed in a second chamber with the two plungers coupled together by appropriate linkage outside of the cylinder. A drive mechanism connected to the coupling linkage simultaneously displaces the two plungers in a reciprocating manner within the two chambers. Inlet and outlet ports in each of the chambers coupled to inlet and outlet valve assemblies allow for the pumping of a slurry from the chambers by the two plungers in an alternating manner. Each valve assembly includes a housing having a pair of ball valves which are both employed either as inlet valves or outlet valves, as the valve assembly may be configured to perform both functions. The valve assembly housing is comprised of a generally H-shaped unitary structure having a pair of couplers each adapted for connection to a chamber in the cylinder as well as a third coupler adapted for connection to either a source of the slurry or to an outlet for the slurry. The H-shaped housing includes two upper and two lower removable end caps which are each securely held in place by a locking pin for ease of installation and removal as well as to facilitate manufacture, disassembly and cleaning of the housing of any slurry residue. The inlet and outlet valve assemblies are also coupled to the hollow cylinder by locking pin and threaded coupler connections for ease of assembly and disassembly such as in the field to facilitate cleaning of the pump. The double acting plunger pump provides a smooth, continuous slurry output as well as increased pumping efficiency.
|
