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Feature
◾Low noise and low vibration
◾If desired, the liquid ring vacuum pumps are supplied also with other motors or with motors in explosion-proof design.
◾Various chemical idusstries
◾Vacuum drying of goods of food and medicien
◾As shown in the figure, a runner is eccentrically assembled into the center of the casing.
Construction type
Sealing water supplied from the suction port changes into the ringed shape of almost the same thickness on the inner wall of the cylinder by revolution of the runner.
The volume of the space surrouned by the ringed inner wall and the blade of the rummer increases and sucks in proportion to revolution and decreases and is compressed, with exhausting action through the exhaust port.
| LEM Series | unit | LEM25 | LEM50 | LEM90 | LEM125 | LEM150 | LEM250 | LEM325 | LEM425 |
Speed 50Hz | rpm | 2800 3500 | 1450 1750 | 1450 1450 | |||||
Max. compression overpressure | bar | 0.3 | 0.3/0.5 | 0.3(0.5") | |||||
Max. admissible pressure difference | bar | 1.1 | 1.1/1.5 | 1.1(1.5") | |||||
Moment of inertial of the | kg/㎡ | 0.003 | 0.0095 | 0.035 | 0.053 | 0.069 | 0.097 | 0.14 | 0.21 |
Sound pressure level at a | dB(a) | 68 | 69 | 65 | 70 | 72 | |||
Max. gas temperature dry | ℃ | 200 | 200 | 200 | |||||
satutated | ℃ | 100 | 100 | 100 | |||||
Service liquid max.admissible temperature | ℃ | ||||||||
materials : 0A, 0B, 0R, 4B | 80 | 80 | 80 | ||||||
0F, 7C, 7R | 40 | - | - | ||||||
max. viscosity | ㎟/s | 4 | 4 | 4 | |||||
max. density | kg/㎥ | 1.2 | 1.2 | 1.2 | |||||
volume of liquid up to shaft level | Liter | 0.3 | 0.4 | 2.4 | 2.8 | 3.2 | 4.0 | 4.3 | 4.7 |
max. flow resistance | bar | 0.2 | 0.2 | 0.2 | |||||
LPH Series | unit | LPH-45008 | LPH-45311 | LPH-45316 | ||||||
speed | rpm | 1150 | 1450 | 1740 | 1150 | 1450 | 1740 | 1150 | 1450 | 1740 |
power of the electric motor provided for drive | kW | 2.2 | 3/4 | 4 | 3 | 4 | 5.5 | 4 | 5.5 | 7.5 |
inertia moment of the rotating pump parts and water filling | kg x ㎡ | 0.05 | 0.063 | 0.09 | ||||||
contents of liquid in the pump upto shaft level | liter | 4 | 5.5 | 7 | ||||||
heat to be eliminated when compres | kW | 1.3 | 2.1 | 3.1 | 1.6 | 2.5 | 3.5 | 2.1 | 3.2 | 4.6 |
lowest suction pressure permissible | mbar | 33 | 33 | 33 | ||||||
max. pressure difference permissible between | bar | 1.5 | 1.5 | 1.5 | 1.2 | 1.2 | 1.2 | 1.0 | ||
min. pulley diameter permissible | mm | 160 | 160 | 160 | ||||||
sound pressure level of measuring area | dB(A) | 64 | 65 | 66 | 64 | 65 | 66 | 64 | 65 | 66 |
max. temperature permissible | max. viscosity permissible of service liquid 90 ㎟/s | |||||||||
LPH Series | unit | LPH-55312 | LPH-55316 | LPH-55320 | ||||||
| speed | rpm | 1150 | 1450 | 1740 | 1150 | 1450 | 1740 | 1150 | 1450 | 1740 |
| power of the electric motor provided for drive | kW | 7.5 | 7.5/11 | 15 | 7.5 | 11 | 15 | 11 | 11/15 | 15 |
| inertia moment of the rotating pump parts and water filling | kg x ㎡ | 0.137 | 0.162 | 0.205 | ||||||
| contents of liquid in the pump upto shaft level | liter | 9 | 10 | 12 | ||||||
heat to be eliminated when | kW | 4.3 | 5.9 | 9 | 4.8 | 6.7 | 10 | 7.9 | 8.1 | 11.3 |
lowest suction pressure permis_sible | mbar | 33 | 33 | 33 | ||||||
max. pressure difference | bar | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.3 | 1.2 | 1.1 | 10 |
min. pulley diameter permis | mm | 200 | 200 | not admissible | ||||||
sound pressure level of | dB(A) | 66 | 66 | 66 | ||||||
max. temperature permissible | max. viscosity permissible of service liquid 90 ㎟/s | |||||||||
