Jet Mixers or Mixing Eductors comprises of two critical components namely the motive nozzle and the diffuser. In jet mixing, a fast moving stream of liquid [motive liquid] is injected into a slow moving or stationary liquid [secondary liquid]. The velocity difference between the jet and the secondary liquid creates a mixing layer of jet boundary.

This mixing layer grows in the direction of jet flow, entraining or mixing the bulk liquid into the jet. Jet mixers can be used in place of Agitators in practically all the cases where the liquids to be mixed can be pumped. 

Some typical applications of Jet Mixers are mixing or blending, solid suspension, electro coating, pretreatment tanks, lube oil blending, neutralization tanks, storage tanks for homogenization etc. 

An established amount of motive liquid is pumped through a header into one or multiple jet mixers submerged within the tank. Depending on the application, the motive liquid can be recycled from the same tank or can be a another liquid drawn from a different source which is to be mixed with the tank contents under consideration. 

The static pressure at the entrance of the nozzle is converted into kinetic energy by allowing the fluid to flow freely through a convergent type nozzle. As the operating fluid exits the nozzle, it entrains fluid from the tank through the suction chamber. The operating liquid along with entrained liquid then undergoes thorough mixing in the parallel section of the diffuser. 

The divergent portion of the diffuser helps in converting the velocity head to pressure head at the discharge end of the mixer. The discharge flow continues the mixing action of the liquid and imparts uniform mixing throughout the tank.   

Salient Features of Jet Mixer:

• Simple and compact in construction. 
• Low capital and operating cost as compared to conventional agitators. 
• No moving parts and hence maintenance free. 
• High Energy Efficiency. 
• Designed to have practically no dead spots in the  tank.