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VACUUM
EJECTOR
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Principal
of Jet vac units
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High pressure motivating fluid is converted
to high velocity. High velocity fluid entrains
and transfers part of its momentum to the
induced fluid. These mixed fluids at low
velocity enter the diffuser, which is so
shaped that it gradually converts's the
velocity energy to pressure energy and discharges
them to a pressure higher than suction pressure
but lower than initial motivating fluid
pressure.
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Salient
Features
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Matertial
Of Construction
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1. Absolute reliability. |
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Cast iron
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| 2.
Robust and long working life. |
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Cast
Steel |
Carbon |
| 3.
Can be made from many corrosion resistance |
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Stainless
Steel |
Lead |
| material. |
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Monel |
Rubber
Lined |
| 4.
Easy handling even of large suction quantities. |
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Porcelain |
PVC |
| 5.
low capital, installation and maintenance costs. |
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Teflon |
Poly
propylene |
| 6.
Compact and light weight. |
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| 7.
No moving part to wear or to go out of order. |
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Simple in operation. |
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| 9.
No sealing and lubricating liquids are required
as in
mechanical system as per eg: Water ring |
| vacuum
pumps & high vacuum pumps. |
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Applications
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Producing and maintaining high vacuum to moderate
vacuum down to atmosphere in the following processes
:-
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| 1.
Distillation |
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| 2.
Evaporation |
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| 3.
Refrigeration |
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| 4.
Crystallization |
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Deodorisation |
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| 6.
Deaeration |
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Drying |
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| 8.
Cooling (Evaporative) |
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| 9.
Vacuum Mettallurgy |
| 10.
Filteration |
| 11.
Degassing |
| 12.
Debusting (in size reduction) |
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13.
Heating, Pumping, Mixing and Stirring of
Fluids, induced
fluids can be Gases, Liquids, Slurries or
liquids with
granular solids in suspensions.
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| 14.
Exhausting and scrubbing of gases with liquids. |
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These
Units Are Made in Following Types
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Sr. No.
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Type
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Range of Suction Pressure
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1.
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Water
Ejector |
32
mm. at shut off with 30°C water . |
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2.
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One
Stage Steam + Water Ejector |
10
mm Hg. abs. |
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3.
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Two
Stage Steam + One Stage of Water Ejector |
2
mm Hg. abs. |
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Capacity
Of Standard Units in M3/HR Free Air Displacement
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Hp
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1
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2
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3
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5
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7.5
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10
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15
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20
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M3/HR
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6.5
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25
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50
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80
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160
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240
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330
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440
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CFM
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4
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15
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30
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50
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95
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140
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200
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260
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Make
Up Water LPM
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4
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5
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6
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8
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16
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20
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30
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40
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