ELECTROPNEUMATICAL ROTATING CHANGE-OVER SWITCH

摘要

It serves specially for medical instrument operations with required time-controlled alternating pressure air filling or de-aeration of one or two independent pneumatic circuits. The changeover switch operates at the same time as a safety valve for the maximum permitted atmospheric pressure value. The functioning is possible to be controlled so that the circuit tightness gets diagnosed. The changeover switch consists of a body (1), shaft (3), spring (4), support (5), bridge and inlet and outlet channel. In the body (1) three slots are formed, a cover (2) is embedded on the rotating shaft (3) and on the front surface adjoining the body (1), is provided with a recess (13) opposite which a through-going air hole (14) is symmetrically located while between the cover (2) and support (5) the compression spring (4) is placed.<IMAGE>