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