Elmo Rietschle Rotary Vane Vacuum Pumps

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  • States: NC, SC, TN, VA
  • Summary: Elmo Rietschle V series cover a range of applications. The eco-friendly, dry running rotary vane pumps are used for industrial vacuum, pressure and combined pressure and vacuum applications.
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  • Industry / Applications

Feature Benefits:

Dry running and oil lubricated versions Low noise level Robust and economical Long up times Easy to operate Easy to maintain Low oil consumption on oil lubricated machine
Oil Lubricated Rotary Vane Vacuum Pumps - V-VGD, V-VCB, V-VCA, V-VCE and V-VC Our oil lubricated rotary vane vacuum pumps are used in a wide variety of industrial applications. We offer the largest range of oil flooded vacuum pumps for industrial vacuum operation. Dry running rotary vane vacuum pumps, compressors and pressure-vacuum pumps Compact V-VTE vacuum pumps and V-DTE compressors are each available in four sizes. Low noise and reliability make this series an ideal choice for many OEM applications. Our medium size dry pumps are available in vacuum (V-VTN), pressure (V-DTN) and combination models (V-KTN). Design features of these include maximized cooling air pathways, heat resistant materials, sound reduction covers and relief valves. The next largest group of dry rotary vane pumps also offers all operation types – vacuum (V-VTA), pressure (V-DTA) and combination models (V-KTA). Developed as continuous duty pumps for printing and paper handling machines, this series is now used widely in many industrial applications. A new range of rotary vane pumps is available as vacuum (V-VTR), compressor (V-DTR) and as combined pressure-vacuum version (V-KTR). The benefits of the new range are visible at a glance: maintenance and control panel are placed on one side only for easy access to filters and valves. Additional features include heat reduction through large cooling air pathways and vents. Design features such as the solid ribs, optimised cooling air circulation, thermal separation of suction and compression chambers within the filter housing, as well as a minimum number of connected heat transferring parts reduce machine temperatures.

Operating Principles

Pressure increase by volume reduction is the principle behind rotary vane operation. This design offers excellent service for pressure, vacuum or a combination of both. In a cylindrical casing a rotor is positioned eccentrically so that it is on the top almost touching the cylinder. Rotor blades or vanes as they are called, are positioned inside rotor slots. When the rotor starts turning, due to centrifugal force the blades are thrown out and slide against the internal surface of the cylinder. In this way a cell is formed between two blades with a volume that changes constantly during rotation. Air enters from the inlet port into a cell until the rear blade reaches the far end of the inlet port. At this point the cell has achieved its maximum air volume. As the cell then moves away from the port its volume becomes smaller and smaller, the air is thus compressed and the pressure rises.Some models are fitted with outlet valves (11) next to the outlet port which stop the back-flow of discharged air when the maximum pressure has been reached.After its passage through outlet port and outlet valves, the oil-gas mixture reaches the de-oiling chamber where the oil is separated from the gas in two steps. Larger oil drops are mechanically separated from the gas and are eventually deposited in the oil sludge recipient.The remaining oil gas mixture is then taken through fine filter elements which separate even the smallest oil particles. These are then reintroduced through an oil suction pipe into the pump‘s oil circuit. The virtually oil free gas can be let outside either through the air outlet or through other hose or piping Arrangements. In a vacuum pump the process is similar, but the cell gives decreasing pressure, and the chamber is at atmospheric pressure.With pressure-vacuum pumps the lower end of the inlet port(s) for the vacuum is moved forward. The cell can now be filled through second inlet. To avoid impairing the vacuum, this second inlet port is located about one cell segment away from the main suction port. The ratio between vacuum and pressure capacities can be influenced by the choice of inlet port.


V-VTE, V-VTA, V-VTN-16-26-41, V-VTR, V-DTA, V-DTE, V-DTN-16-26-41, V-DTR, V-KTA, V-KTN-16-26-41, V-KTR, V-VC, V-VCA-VCE, V-VCB, V-VGD


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