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Jet Syphons

Principle of Operation of Jet Syphons

The Fig. 220 Jet Syphon is designed for use where solids or semi-solids must be passed through the pump.Typical uses include handling sewage and muddy water, cleaning cesspools and cleaning sludge out of tanks. Ejectors of this type can be used as pipeline slurry heaters for continuous processing. A high-pressure gas enters the syphon at the side, passes through an annular orifice, and discharges at high velocity into the throat. The suction material is drawn in through the open suction nozzle, is entrained by the gas and is discharged through the discharge connection at some pressure intermediate to suction and motive pressures.

Sectional drawing of Figure 220 Jet Syphon with threaded pipe connections
Figure 220 Jet Syphon is designed for use where solids or semi-solids must be passed through the unit such as sewage, muddy water, cesspools and sludge.

The Fig. 220 Jet Syphon provides a straight, unobstructed passage for material handling, has no moving parts, good for pumping and mixing, and requires little maintenance.

  • Pumping sludge without clogging.
  • Pumping sludge out of petroleum refinery tanks.
  • Waste treatment operation in petroleum refineries.
Steam Jet Syphon pumping sludge without clogging
Fig. 220 Syphon Pumping Sludge Without Clogging.
In this operation, a Fig. 220 Syphon is partially submerged in the sludge at the bottom of an oil tank which may or may not contain oil. The pressure steam not only provides the motivating force necessary to entrain and discharge the sludge but also heats the sludge and makes it easier to move the sludge from the tank to the discharge point. Also, if additional pumping is required, the heated sludge is sufficiently fluid to permit the use of a centrifugal pump. The streamlined body of the syphon provides maximum efficiency without clogging.