SRT “Roots” Trilobe Blower
The SRT series blowers are positive displacement volumetric machines consisting of a pair of lobes with a conjugated profile, rotating inside a suitably designed body.
The aspirated gas is compressed in the small gaps that form between the lobes and the body, and then transferred to the discharge. The operating pressure refers to the pressure drop generated by the gas pumped into the installation.
Operational Parameters
Capacity: ___up to 25.000 m3/h
Pressure: ___ up to 1,0 bar
Vacuum: ___to -500 mbar
Project Features
- SRT blowers have trilobed lobes with a conjugated profile that rotate in different directions inside a body, trapping the air or gases in the chamber formed between the rotor and the body. The air or gases will be conducted towards the machine’s discharge, where the displaced air or gas is pressurized by the resistors and will encounter a backpressure that will cause the automatic pressure adjustment to the pressure found in the system itself.
- The trilobed rotor has greater resistance and better pressure distribution around each lobe, which results in a reduction in pressure peaks caused by the return of gases in the chambers formed between the lobes and the blower body. This system allows the machine to operate with a pulsation cycle 30% higher than the bilobed rotor, improving flow uniformity.
Advantages
- Oil-free air: the pumping chamber within which the lobes transport the air from suction to discharge, is sealed by means of an oil deflector disc working in conjunction with sealing rings, which prevent the entry of oil vapors into the pumping chamber
- Trilobed shaft-lobe assembly: Trilobed lobes and shaft are a more rigid assembly than bilobed shaft-lobe assemblies, and they also have better pressure distribution. This results in lower radial forces, reducing the loads on the bearings and increasing their service life, allowing for lower vibration and higher speed, leading to the adoption of smaller equipment and reducing installation costs.
- Lower pulsation and vibrations: the pumping chambers are equipped with pulsation and noise reducers. In addition, trilobed rotors generate a higher pulsation/noise frequency than bilobed rotors, which allows for a simpler reduction of pulsations/noise.
- Leak-free lubrication: gears and bearings are lubricated by splashing, using splash rings in an oil bath.
- Precision machining: parts and pieces manufactured on high-precision numerical control machines and used specifically for this service. This results in components with high volumetric efficiency, ensuring performance within their specifications.
- Sealing between the gas and the outside using labyrinths: ensures minimal air loss through the shafts and no oil entering the blower body.
- Highly rigid lobes: made from high-quality cast iron with a special alloy steel through shaft.
- Extremely robust body: made from a single piece of cast iron to ensure high mechanical strength and durability.
Applications
- Pneumatic transportation of bulk materials, operating under vacuum or pressure in the transportation of ash, cement, flour, crystals, grains, pellets, sawdust, unloading of holds of vessels, trucks, aeration of tanks, lagoons, among others.
- In effluent treatment, aerating tanks.
- In back pressure in filter cleaning processes.
- In the steel industry in the furnace blowing processes in direct reduction plants.
- Operating as a primary pump in high-vacuum processes (requires special seals).
- In pressure-raising processes, acting as a “booster”. Supplied to withstand inlet pressures of up to 2.5 bar. Machines in nodular cast iron or carbon steel allow higher pressures to be achieved.
- In the transportation of gases in general in applications in the chemical, petrochemical and metallurgical industries with sealing and
special materials such as stainless steels, superalloys, among others. - In the treatment of waste in landfills by pumping out gases produced by decomposing material.
- In mobile units designed for cleaning large areas by suction and for spraying granules and powdered products over large areas.
- In cement industry kilns for injecting combustion air or cooling nozzles or pneumatic cabin transport.
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Products offered include centrifugal pumps, vacuum pumps, metering pumps, roots blowers, ring compressors, rotameters, vacuum systems, and pinch valves.
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