6
Comments on figure 1
The pneumatic motor (1) drives the BINKS airless pump. An airflow controller in the pneumatic
drive applies compressed air alternately to the pneumatic motor piston . This sets the piston
moving upwards and downwards.
The pneumatic motor is flange-mounted directly to the material pump (4). A moving axle connects
the pneumatic drive butt plate to the double piston of the material pump.
The ascending stroke of the double piston draws in the material through the suction system (5)
and the foot valve of the spray material pump. At the same time, the material which is already in
the material pump above the double piston, is ejected through a check valve into the high pressure
filter (11).
The descending stroke of the double piston closes the foot valve and the material which has been
drawn in, is forced through a plunger valve into the space above the double piston. At the same
time, the material which is already there is ejected into the high pressure filter.
If the airless gun take-off is not operative, counter pressure will build up in the material line. The
pump will stop. Spray material from the airless gun and the BINKS airless pump will start up again.
The area of the motor piston is greater than the area of the material piston. This difference in area
causes the pressure to intensify. With an area ratio of 60/1, for example, a working pressure of
1 bar at the pneumatic drive will be intensified to a working pressure of 60 bar at the spray materi-
al pump.
The lubrication chamber (10) physically separates the pneumatic motor from the material pump.
The lubrication chamber is filled with lubricant (Order Code 0114-014871 for waterborne paint,
Order Code 0114-009433 for solvent paint). The lubricant cleans the double piston of the spray
material pump and lubricates the packing and the moving axle.
The volume of air and thus the delivered volume of material is regulated by the working pressure
at the compressed air control valve (7). The compressed air control valve is equipped with an ex-
cess pressure safety valve, which is triggered if the maximum working pressure at the pneumatic
motor is exceeded.
The material pump can draw in spray material in two ways.
Direct suction:
This involves immersing the suction system in the spray material.
Suction through a flexible suction system:
This involves connecting the material pump to a flexible suction system. The free end of the suc-
tion system is inserted into the tank containing the spray material.
Summary of Contents for HP 6/60
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