PUMP

摘要

The pump shall find application basically in instruments for liquid analysis. It is equivalent to the batching systems applied in the instruments for liquid analysis and it batches, mixes and transports two liquid components. The pump includes a casing consisting of a cylinder (1) and a chamber (4) united in a housing (6). A piston (18) sealing the internal surface of the cylinder (1) is mounted with a facility for periodical interaction with a stem (36) of the chamber (4). The latter is fabricated with two valve elements (29 & 38) the stems (30 & 36) of which are interconnected by a sliding springloaded connection by means of which one of the elements (38) is mounted on its stem (36). The chamber (4) is closed by a lid (42) connected to a pipeline (44), whilst two other pipelines (48 & 50) with a single-way valve (49) mounted on each of them are connected to a groove (25) or grooves (26) machined frontally into a nest (24) closed by the element (38).