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Steam Jet Syphons

Principle of Operation of Steam Jet Syphons

Fig. 217 and Fig. 219 Steam Jet Syphons are designed for liquid pumping and mixing operations and for the handling of some solids. Steam, air or gas under pressure is used to pump, mix liquids and handle solids. Fig. 217 and Fig. 219 Steam Jet Syphons can be used for the handling of corrosive or abrasive liquids and solids because of their design simplicity, the absence of moving parts, and can be made from any machineable material.

Steam Jet Syphons are especially well suited for processes where heating is required in addition to pumping since the pumping is accomplished for the cost of the heating.

Fig. 2175 Automatic Steam Jet Syphons are used to pump out sumps (pits, tanks, etc.) where liquid accumulates slowly but must be evacuated when it reaches a predetermined level. Operation of the Fig. 2175 Automatic Steam Jet Syphon requires no electrical connections or external power other than motive fluid.

Figure 217 Jet Syphon cutaway with threaded pipe connections
Figure 217 Jet Syphons uses gas under pressure to produce a high velocity jet causing suction material to be entrained by the gas.
Figure 219 Steam Jet Syphon cutaway drawing with flanged connection
Figure 2175 Automatic Steam Jet Syphon with pilot operated snap valve

Fig. 217 and Fig. 219 Steam Jet Syphons offer numerous advantages. Within the syphon, there are no moving parts to wear or break, and thus nothing to require extensive maintenance. Since the syphon is small in relation to the work it does, the cost is correspondingly low. Easy to install, they may be located in remote and inaccessible places without requiring constant attention.

The Fig. 2175 Automatic Steam Jet Syphon is self-operated and requires no electrical connections. The snap-action valve and ball float are the only moving parts. Special Automatic Syphons can be made from any other jet syphon.

  • Supplying heated water to jackets of stills and graining bowls.
  • Intermittent pumping of liquids from tanks and pits.
  • Condensing and mixing ammonia.
  • Pipeline heater.
  • Pumping waste water from quench tanks and cleaning inline pipes with heated water in steel processing.
  • Used on dust collecting equipment.
  • Used for draining large receptacles of waste process.
  • Automatic pumping of chemical spill.
  • Automatic pumping of condensate sump for power industry.
  • Automatic pumping of water in hot house in agricultural industry.
  • Pumping filtrate from vacuum vessels and condensate from surface condensers.
  • Supplying heated water to the jackets of stills and graining bowls.
  • Removing liquid from pickling baths.
  • Extracting chemicals in reaction chambers.
  • Moving powdered material or material in granular form.
  • Filling and emptying gas holder tanks.
  • Handling soap solutions in textile plants.
  • Pumping sugar juice and various liquids in canning plants.
Steam Jet Syphon supplying heated water to jackets of stills and graining bowls
Fig. 219 Syphon Supplying Heated Water to Jackets of Stills and Graining Bowls.
When steam is injected directly into a jacketed kettle, there is usually a large temperature gradient between the top and bottom of the kettle due to condensation of steam in the jacket. Use of a Fig. 219 Steam Jet Syphon eliminates this gradient because the syphon constantly entrains and reheats the steam in the jacket before it has a chance to condense. Temperature is thus held uniform throughout the jacket.
Steam Jet Syphon intermittent pumping of liquids from tanks and pits
Fig. 217 Syphon Used for Intermittent Pumping of Liquids From Tanks and Pits.
Because the syphon is low in cost, requires minimum maintenance, has no moving parts, and is not seriously affected by semi-solids, dirt, grit or grime, it is used extensively for draining pits, cellars and other receptacles as illustrated. After installing the syphon, draining can be accomplished periodically by merely opening the stop valve in the steam line.
Steam Jet Syphon condensing and mixing ammonia
Fig. 217 Syphon Used in Condensing and Mixing Ammonia.
An unusual, but efficient, method of condensing and mixing ammonia in water without the use of a pump is illustrated. Ammonia at atmospheric temperature issues from a tank car under sufficient pressure to entrain water from the bottom of the water tank and discharge the mixture back into the tank through sparger nozzles. The sparger nozzles perform another mixing and agitating action within the tank.
Steam Jet Syphon in continuous application in paper industry
Fig. 217 Syphon Used as a Pipeline Heater.
In a system for the continuous application of detergent solution to paper-mill felts, a water-motivated jet eductor is used to entrain detergent concentrate from a drum. This detergent is intimately mixed with the motive water in the diffuser and this solution is immediately entrained by the steam jet syphon. It is brought to the desired temperature by contact with the steam in the body of the syphon. It is discharged at an elevated temperature and pressure into piping, then through spray jets which apply the solution to the felt.