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Liquid ring pump LR, LRM

Characteristic:

 

- oil-free operation
- they are suitable for suction of gases and vapors
- they can reach relatively deep vacuum
- they are able to work simultaneously
  with the gas and liquid
- anti cavitation protection is ensured by
  installation of anti-cavitation valve
- safe operation with minimal maintenance
- smooth running without vibration
- economic operation

 

Applications:

 

- Chemical industry
- Food industry
- Pharmaceutical industry
- Paper Industry
- Packaging industry
- Evaporation and drying

 

Principle:

 

Rotor with fixed blades (1) is rotating in the stator (2), in which is situated eccentrically. Water ring is created from the service liquid (3) by the centrifugal force. The vacuum is formed and the pressure is changed in the compression chambers (4) between the blades and water ring. During the operation, the pump has to be supplied by adequate quantity of service liquid to achieve desired performance. Service liquid is also very useful for cooling of the liquid ring vacuum pump and for receiving possible contamination of sucked gas.

 

princip_vodokruzna_vyveva_web_1175

  Type Fre-
quency
(Hz)

Suction

(m3/h)

Vacuum

(mbar)
(abs)

Motor (IP54), 50Hz, 60Hz

Sound
pressure
level

(dB)

 Weight

(kg)

Oper.liquid
qty.

(m3/h)

Recommended

type of
flowmeter

Output Rated voltage Rated current
(kW) (V) (A) 
   Three phases
LR 060-H06
50 28 33 0,75 200-240 Δ/345-415 Y
 4,6 ∆/ 2,5  Y  62 17
0,20
R-1/R
60 32 1,1  200-240 Δ/345-415 Y  5,2 ∆/ 3,1 Y  67
LR 061-H16 50 48 33 1,5  200-240 Δ/345-415 Y  7,5 ∆/ 4,3 Y  65 22 0,23 R-1/R
60 53 2,2 200-240 Δ/345-415 Y 
 9,2 ∆/ 4,6 Y  69

 

 

 Type Fre-
quency
(Hz)

Engine speed

RPM

Suction
(m3/hod)

Vacuum

(mbar)

(abs)

Motor (IP54), 50Hz, (60Hz)*
Sound
pressure
level

(dB)

 Weight

(kg)

Max. operating    liquid

at  continuous

 operation (l/h)

Max. operating liquid

at intermittent

 operation (l/h)

Recommended

type of
flowmeter

Output Rated voltage Rated current
(kW) (V) (A) 
    Three phases
LRM 25
50 2850 25 33 0,75 345-415 Y 1,76 Y 68 18 500 600 R-2/R
LRM 50
50 2850 45 33 1,5 345-415 Y 3,13 Y  68 23
600 720 R-2/R
LRM 95
50 1450 75 33 2,2 345-415 Y 4,83 Y  65 56 1700 2000 R/3
LRM 130
50 1450 120 33 4,0 345-415 Δ 8,15 ∆  65 73 1800 2200 R/3
LRM 255
50 1450 180 33 5,5 345-415 Δ 11,0 ∆ 65 100 3000 3600 R/3
LRM 325
50 1450 300 33 7,5 345-415 Δ 15,0 ∆ 72 132 3200 3900 R/3
LRM 455
50 1450 400 33 11,0 345-415 Δ 21,2 ∆ 72 205 3800 4600 R/4

 

Vacuum pumps Rotary vane RV, Piston pumps VP, Luquid ring pump LRDatasheets (pdf/3MB)

 

        

           Liquid ring pumps


Material

1 Casing

Stainless steel
2 Port plate Stainless steel
3 Impeller Bronz
4 Lantern Cast iron with teflon coating
5 Motor IE1 motor
6 Mechanical seal

Pot lead

 

Possibility of material design in AISI for models LRM 25 - LRM 455

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