Construction Fig. shows an arrangement of a jet pump in a bore well.
Each jet pump consists of a conventional radial flow pump with a jet nozzle at the suction end.
This helps to increase suction lifts beyond the normal limit of about 8 m of water head.
With the use of the jet assembly, it is possible to increase the suction lift to 60 m.
Working This working operation from the jet pump is as follows
The suction side is filled with water also the pump is started.
Some stream of high-pressure water from a specific delivery pipe of the pump remains allowed to flow through that suction jet nozzle. Some pressure energy of water is converted into kinetic energy due to which a local drop-in this pressure takes place. Due to this pressure drop suction remains created including water being sucked from the bore well. Here action ensures a considerably large supply of low-pressure water.
During the streams with different velocities mix (in this mixing zone), some pressure rise takes place in some mixing zone.
Behind the mixing zone, there is a diverging section where the further rise of pressure occurs due to a decrease in velocity.
Uses The fields of the jet pump are
A jet pump can be used to take out muddy water from excavation trenches