YAMADA DR110A50, Инструкция, Страница: 7 / 14

2
Air motor
Lower pump
Connecting
rod
2. Principles of Operation
The Yamada Air-powered Pump is a reciprocating
type that is driven by compressed air. The pump
consists of an air motor to drive the pump and a
lower pump to draw up the material as shown in the
figure at right.
When compressed air is supplied from the
compressor to the air motor, the air piston starts its
up/down motion by the function of the air switching
mechanism built in it.
This motion is transmitted to the piston of the lower
pump by the connecting rod that connects between
the air piston of the air motor and the piston of the
lower pump, thereby giving the up/down motion to it.
When the up/down reciprocating motion of the piston
of the lower pump is performed, the material is
sucked into the lower pump and fed out from the
discharge port by pressure.
3. Preparations before Operation
＊
This pump is used in an assembled status as a grease pressure-feed unit except when it is
used for a special plant. For the relevant operating method and precautions on handling,
see the operation manual attached to the respective product.
＊
For using the pump independently
1) Install the air regulator (separately available) and the air hose (separately available) at
the air supply port.
2) Install the material hose (separately available), grease gun, and high-pressure valve fit
for the application at the material discharge port.
Material hose
Grease gun
Pump
Air regulator (size 1/4)
Valve
Air hose