Looks to be some type of cam actuated pump.
The drawing looks like it was taking out of a patent page.
The drawing seen as a schematic representation, it could be a hydraulic, fat, or emulsion pump.
Design wise, it's nok
wich type of volumetric pump??
I would not consider this a "volumetric" pump. This is a simple cam driven piston pump. Outlet is at 9. Inlet is at 13. Pressure regulation is set with adjustable spring force at B, where a relief return line goes to the to fluid reservoir.
Le dessin en coupe représente une pompe à piston actionné par un arbre à came en position de refoulement. L’aspiration monte par l’intérieur du tube 13 alors que le refoulement se fait en B au travers de la pièce 3.
Nota: La pompe à piston est de type « Volumétrique ».
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