Gardner Denver WELCH MPC 301 Zp Ex, Руководство по эксплуатации

Страница: 8 / 36

Description
8 4000481-04
3 Description
3.1 Design
The diaphragm pump consists of the pump
ca
sing, the drive unit and the drive motor.
The pump casing contains the drive unit and
two or four pump heads.
Each pump head contains a diaphragm
and the work valves. The pump heads are
arranged in a horizontally-opposed pattern.
The pump heads are driven via an eccentric
shaft with a connecting rod.
Two and three stage pumps are supplied,
depending upon the circuitry of the pump
heads.
Fig. 1 Diaphragm pump MPC 601 Tp Ex
3.2 Principle of Operation
Motor, eccentric shaft and connecting rod set the diaphragms in stroke movement. This
changes the size of the space between the diaphragms and pump head (pump chamber).
Increasing the size of the pump chamber opens the inlet valve while the outlet valve is
closed (intake process).
Decreasing the size of the pump chamber ejects the gas through the outlet valve.
The valves are actuated by the gas being pumped.
3.3 Materials of the medium-affecting pump parts
Component
Chemical model
MPC ... Ex model
(resistant to aggressive gases)
Connecting head with insert PTFE with carbon-fibre reinforced
*)
O-Ring EPDM
Screw fitting PVDF
Valves PEEK
Diaphragm Ela PTFE Layer
Manifold PP
*)
electrically conductive 10
3
(DIN 53482 manufacturer's certificate is present)
Material resistance to aggressive media see:
Publisher Hoppenstedt Publishing (18. September 2007)