ES307698A1 - Gear pump for cast synthetic materials. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Gear pump for molten synthetic materials, and at relatively high pressures and temperatures, characterized in that it has at least one inlet duct, at least two gear pumping systems, each associated with its own outlet duct, for the precision volumetric feed of at least two rows for the transformation of the aforementioned materials into filaments, the pump systems being individually housed in separate and parallel cavities, made in parallel housing plates and separated by an intermediate sheet, closed, at opposite side of said intermediate plate, by other side plates, all these plates having flat sides, parallel and opposite, to jointly form a pump body comprising at least two pairs of gears in each of which is included so less an actuator gear, the gears being arranged in each cavity coaxial with respect to the gears disposed at least in another parallel cavity, all said inlet and outlet ducts passing through only one of said side plates and opening into spaced positions on the external face of said pump body, characterized in that the ducts each of the cavities separated by the intermediate plate, they each comprise a transverse section made in the thickness of one of the plates adjacent to the respective cavity, and which extends in a plane parallel to said sheets, from a point adjacent to the coupling arc of the gears of the corresponding pumping system, on the outlet side, to a second point outside the contour of said cavities, and a longitudinal section constituted by holes that they pass through at least one of said sheets, in a direction perpendicular to their faces, between said second point and to the mouth of the corresponding duct, on said part of the body of the pump, the deviations existing between said sections being substantially the same in all said ducts. (Machine-translation by Google Translate, not legally binding)