(57) A diaphragm type pumpe device comprises a connecting rod (1), a diaphragm (2) connected
to an end of the connecting rod. a cover (13) which firmly secures the outer circumferential
part of the diaphragm and constitutes a first operation chamber (14), a frame (19)
which opposes the cover to firmly secure the outer circumferential part of the diaphragm
(2) in association with the cover (13) and constitutes a second operation chamber
(20), and an intake port (15; 21) and a discharge port (16: 22) which are respectively
communicated with the first operation chamber (14) and the second operation chamber
(20) and provided with check valves (17, 23; 18, 24) each having different communicating
direction, wherein the first and second operation chambers (14; 20) alternatively
perform pumping operation by the amplitude movement of the diaphragm (2) due to a
combination of the reciprocating movement of the connecting rod and the action of
the check valves.
|
|
