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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. Installation
- Apply sealing compound or sealing tapes to the male screws and tighten tightly when the pipes are
connected. Be careful not to allow the sealing materials to enter the piping.
Do not apply the tip of the terminal (two thread ridges) to maintain conductive property of the
ground. (However, no applying is necessary if it will be connected to the hose union.)
Check that there is no leakage or electrical continuity in each part after connecting the piping.
3.1 Installing the Drum Pump
1)
Remove the plug at the injection port (2B) of the
drum can and screw the bang adapter attached to
the pump.
2)
Insert the pump in the bang adapter. When the
lower end (foot valve) of the pump touches the
bottom of the drum can, lift the pump 2 or 3 cm to
make a clearance between the foot valve of the
pump and the bottom of the drum can, and fix the
pump by tightening the thumb screw of the bang
adapter. (Fig.1)
- When using a vessel with cover such as drum can, be sure to loose the vent plug so that the inside
of the vessel may not form a vacuum.
Connecting
rod
CAUTION
WARNING
2
Air motor
Lower pump
Material
Air regulator
hose
Hose
union
Bang adapter
Fig. 1
Air hose
Vent
plug
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