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Liquid ring vacuum pumps in compact design LEM 26, LEM 51

Liquid ring vacuum pumps in compact design LEM 26, LEM 51
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Liquid ring vacuum pumps in compact design LEM 26, LEM 51 - 1

Liquid ring vacuum pumps in compact design SIHIextruvac LEME 130, LEME 155 VACUUMTECHNOLOGY LEME 133.71330.52.01 E 04/2006 Pressure range: 100 to 1013 mbar Suction volume flow: 30 to 170 m³/h CONSTRUCTION TYPE SIHI liquid ring vacuum pumps are displacement pumps of uncomplicated and robust construction with the following particular features: non-polluting due to nearly isothermal compression oil-free, as no lubrication in the working chamber handling of nearly all gases and vapours able to handle water carry over easy maintenance and reliable operation low noise and nearly free from vibration wide choice of material, therefore applicable nearly everywhere shaft not contact with the medium protection against cavitation as standard incorporated dirt drain incorporated central drain no metallic contact of the rotating parts The SIHI liquid ring vacuum pumps LEME are single-stage ones. APPLICATION Handling and exhausting of dry and humid gases. The pumps are applied in all fields where a pressure of 100 to 900 mbar must be created by robust vacuum pumps. The LEME is specially designed to handle additional water that is exhaust through the suction inlet. NOTE During operation the pump must continuously be supplied with service liquid, normally water, in order to eliminate the heat resulting from the gas compression and to replenish the liquid ring, because part of the liquid is leaving the pump together with the gas. It is possible to reuse the service liquid. The pumps are equipped with a device by which the contaminated service liquid can continuously be drained during operation (dirt drain), if necessary. The direction of rotation is clockwise, when looking from the drive on the pump. GENERAL TECHNICAL DATA Pump type unit LEME 130 LEME 155 Speed 50 Hz 60 Hz rpm 1450 1750 Max. compression over pressure bar 0.3 Max. admissible pressure difference bar 1.1 Hydraulic test (over pressure) bar 3 Moment of inertial of the rotating pump parts and of the water filling kg . m² 0.053 0.069 Sound pressure level at a suction pressure of 150 mbar dB (A) 65 Max. gas temperature dry saturated °C °C 200 100 Service liquid max. admissible temperature max. viscosity max. density °C mm²/s kg/m³ 80 4 1200 volume up to shaft level litre 2.8 3.2 Max. Water handle capability m3/h 7.5 The combination of several limiting values is not admissible.

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Liquid ring vacuum pumps in compact design LEM 26, LEM 51 - 2

SIHIextruvac 2 Material design Material design Item Components 0A 10.10 Vacuum casing 10.90 Central body 0.6025 13.70 Guide disk 1.4404 23.50 Vane wheel impeller 2.1096.01 43.30 Mechanical seal Cr-Steel / Carbon / Perbunan 75.11 Valve plate PTFE Sectional drawing LEME 130, LEME 155 Fresh water requirements in [m³/h] dependent on suction pressure, speed, mode of operation and difference in temperature suction pressure [mbar] 100 200 400 KB KB KB Pump type speed difference in temperature [°C] FB difference in temperature [°C] FB difference in temperature [°C] FB [rpm] 10 5 2 10 5 2 10 5 2...

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Liquid ring vacuum pumps in compact design LEM 26, LEM 51 - 3

SIHIextruvac 3 Suction volume flow and power absorption LEME 130 0 20 40 60 80 100 120 140 0 100 200 300 400 500 600 700 800 900 1000 Suction pressure [mbar] Suction volume flow [m³/h] 1450 rpm 1750 rpm 0 1 2 3 4 5 0 100 200 300 400 500 600 700 800 900 1000 Suction pressure [mbar] Power adsorption [kW] 1450 rpm 1750 rpm The operating data are applicable under the following conditions: • pumping medium: - dry air: 20°C - water vapour saturated air: 20°C • service liquid: - water: 15°C Compression pressure 1013 mbar (atmospheric pressure) The suction volume flow is applied to the suction...

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Liquid ring vacuum pumps in compact design LEM 26, LEM 51 - 4

SIHIextruvac 4 Suction volume flow and power absorption LEME 155 0 20 40 60 80 100 120 140 160 180 0 100 200 300 400 500 600 700 800 900 1000 Suction pressure [mbar] Suction volume flow [m³/h] 1450 rpm 1750 rpm 0 1 2 3 4 5 6 0 100 200 300 400 500 600 700 800 900 1000 Suction pressure [mbar] Power adsorption [kW] 1450 rpm 1750 rpm The operating data are applicable under the following conditions: • pumping medium: - dry air: 20°C - water vapour saturated air: 20°C • service liquid: - water: 15°C Compression pressure 1013 mbar (atmospheric pressure) The suction volume flow is applied to the...

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Liquid ring vacuum pumps in compact design LEM 26, LEM 51 - 6

SIHIextruvac 6 Data regarding the pump size - order hints Series & size Hydraulic & bearing Shaft sealing Material design Casing seal 0• •Z Hydraulic for additional water handling two grease lubricated antifriction bearings arranged in the motor AAE mechanical seal, O-rings Perbunan 0A main parts of GG 0 Liquid seal LEME 130 LEME 155 0Z AAE 0A 0 Motor selection table motor enclosure IP 55 50 Hz motor enclosure IP 55 60 Hz Y-voltage V +/- 5% Ä-voltage V +/- 5% power kW Y-voltage V +/- 5% Ä-voltage V +/- 5% power kW size motor design. LEME 130 660-725 380-420 4,0 - 440-480 4,8 112 M BW LEME...

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