Displacement piston pump
AssigneeProMinent Dosiertechnik GmbH
InventorRainer Weisbrodt
Life of this patent
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Abstract
A displacement piston pump has a drive shaft that is driven by a rotating motor. The pump includes a piston which is axially movable within a cylinder and is connected to a piston guide shaft. The drive shaft and the piston guide shaft are rotatably coupled to each other, but some axial movement is permitted between these two members. The drive shaft and the piston guide shaft are coaxially aligned with respect to each other. The piston guide shaft has a guide element connected thereto. The guide element is guided in a guide way. The piston stroke can be maintained with high precision. The piston guide shaft is rotatably and axially supported in a support housing. The support housing contains the guide way therein and a guide element is rigidly connected to the piston guide shaft.
Claims18
A positive displacement piston pump comprising:
- a drive shaft being rotatably driven by a motor;
- a support housing having a guide way formed therein, a cylinder being fixedly connected to said support housing;
- and
- a piston being movably arranged within said cylinder and connected to a piston guide shaft, said drive shaft and said piston guide shaft being rotatably coupled to each other, being axially movable with respect to each other, and being coaxially aligned with respect to each other, said piston guide shaft having a guide element connected thereto, said guide element being guided in said guide way, said piston guide shift being rotatably and axially movably supported within said support housing, said guide element being rigidly connected to said piston guide shaft.
Dependencies are inferred from the claim text.