Dual purpose pump for pressure vessels

摘要

PCT No. PCT/EP91/00435 Sec. 371 Date Nov. 13, 1992 Sec. 102(e) Date Nov. 13, 1992 PCT Filed Mar. 8, 1991 PCT Pub. No. WO91/14508 PCT Pub. Date Oct. 3, 1991.A dual purpose pump for pressure vessels comprises a piston pump disposed within a pump cylinder. The piston pump is arranged in the interior of the pressure vessel and actuatable from the outside by piston strokes for building up an increased pressure in the interior of the vessel. The pump cylinder is mounted on the vessel and projects into the interior thereof. The present invention simplifies mixing, e.g. the preparation of an emulsion, by rotatably mounting the pump cylinder about its longitudinal axis. To accomplish this, a drive mechanism may be mounted on he outside of the vessel for rotating the pump cylinder and the pump cylinder takes mixing elements along with it which project into and thereby mix the liquid during rotation.