Product Description
Houttuin 236 series Twin-Screw Pump -
Installation, Operation & Maintenance Manual
21
Seal Chamber
– The seal chambers are under suction pressure only. They are designed to
accommodate standard single seals in either a component or cartridge configuration. Seal
chamber tapping’s can be configured to support most API 682 seal plans. On applications
where, hazardous liquids are being pumped or seal leakage of the pumped fluid is
objectionable, your pump can be equipped with double mechanical seals
– in component or
cartridge design
Bearing Brackets
– Bearing bracket are round type with rigid ribs to withstand greater torsional
load. Bearing bracket are sealed off from the environment by lip seal. Bearing brackets are
isolated and lubricated to protect the bearings. The brackets may be furnished with provisions
for seal leakage detection, vibration sensors, pressurized flush systems, etc.
Timing Gears
– Timing gears are used to transmit power from the drive to the idler shaft and
to prevent metal contact between the meshed, rotating screws. The "timing" or placement of
the gears on the shaft prevents rotational contact of the pumping screws. This clearance
between the pumping screws relates to extended pump life and higher, average efficiency over
the life of the pump. Spur gear are used for transmission. Gears are oil lubricated by means
of a self-contained system and are sealed off from the environment by lip seals. The gears are
of steel construction.
Bearings
– Radial loading is handled at four locations by heavy-duty rolling element bearings
that are sized to handle maximum loads. The bearings are oil lubricated at gear side and either
grease or oil lubricated at motor side and sealed off from the pumped fluid by lip seals. The
pump is hydro dynamically balanced, so axial loading is eliminated.
Baseplate
The fabricated steel baseplate supports the pump, driver, and accessories in accordance with
CIRCOR standards or API-676 latest Edition requirements depending on application.
Direction of rotation
The direction of rotation is normally clockwise when viewed look at the drive end of the pump.
The direction of rotation furnished on a specific order should be verified by checking the pump
GA or outline drawing or the direction of rotation arrow affixed to the pump.
