SOP 2LG Ring Blowers

Description

SOP 2LG ring blowers (side channel or regenerative blowers) combine two jobs in one machine: blowing air at up to 670 mbar and pulling vacuum down to −460 mbar. The range runs from 0.37 to 25 kW and from 80 to 2050 m³/h, in single phase 230 V and three phase 380 V versions. IESCO selects the right model for your duty, supplies it and services it in Georgia.

What a ring blower is and how it works

In a ring blower the impeller sits directly on the motor shaft and turns inside a ring-shaped channel. Air enters the impeller blades at the inlet, is thrown against the channel wall by centrifugal force, returns to the blades and is accelerated again, several times over, before it reaches the outlet. Each pass raises the pressure, which is why the design is also called a regenerative blower.

The impeller never touches the housing; there is no gearbox and no oil. The result is 100% oil-free air, practically no wearing parts, minimal service and continuous 24-hour operation. The same machine works as a compressor or as a vacuum pump, depending on which side you connect.

Single stage or double stage

A single stage model works with one impeller and gives high flow at moderate pressure. In a double stage model two impellers work in series: air from the first stage passes into the second and is compressed again. At the same motor power the pressure and vacuum roughly double while the flow decreases. Choose double stage for long pipe runs, pneumatic conveying, deep vacuum or high resistance in the system.

Applications

Water aeration. Fish farms, wastewater treatment plants, pools and spas: the blower pushes oxygen through diffusers continuously and without oil.

Vacuum in production. Vacuum tables on CNC machines, packaging and printing machines, vacuum lifters and dust collectors, medical and dental suction.

Pneumatic conveying and drying. Transport of granules, powder and grain, air knives for drying bottles and parts, plastics processing, air supply to combustion and biogas systems.

Construction

Housing and impeller are aluminium alloy, so the unit is light and corrosion resistant. The motor is IP55 rated with copper windings and thermal overload protection; noise is 53 to 75 dB(A) depending on model. Pipe connections are standard threads from G1-1/4 to G5, so connecting to an existing system is straightforward. The blower can be mounted in any position.

Technical data

Data is given for 50 Hz mains as used in Georgia. For three phase models voltage and current are shown for delta (Δ) and star (Y) connection. Maximum vacuum and maximum pressure are not reached at the same time: they are two operating modes of one machine.

Single stage, three phase

Double stage, three phase

Single stage, single phase 230 V

Double stage, single phase 230 V

How to choose

Flow and pressure together. The maximum flow in the table corresponds to free blowing and the maximum pressure to zero flow. Your operating point lies between the two, so tell us the m³/h and mbar you actually need and we will select the model from its performance curve.

Reserve. A blower should not run at maximum pressure continuously: the air heats up and the motor is overloaded. Keep the working pressure below 80 percent of the maximum.

Protective accessories. An inlet filter protects the impeller from dust, a relief valve on the outlet or inlet prevents excessive pressure or vacuum, and a silencer reduces noise. We assemble this kit together with the blower.

If you need more than 2000 m³/h or more than 1 bar, AERZEN rotary lobe blowers are the better fit. See the full range in the Air Blower category.

Selection, installation, service

IESCO supplies SOP 2LG blowers complete with filter, relief valve and silencer, helps with pipework and electrical design and carries out installation. Our service centre provides warranty and after-sales support, with spare parts and filters in stock. Contact us: +995 32 206 01 00.