The Screw Pumps portfolio is completed through ATEX-certified variants. This product version is intended for operation in air-conditioned rooms. Thus, Screw Vacuum Pumps adapt themselves ideally to the ambient conditions under changing operating situations.Ī water-cooled version is offered as Screw Vacuum Pumps SP 630 F. Here rotor and housings are thermally linked via the oil cooler. Should deposits form in spite of this, then the easy to disassemble housing facilitates rapid cleaning.īesides the integrated oil cooling arrangement for the rotors, the Screw Vacuum Pumps are air-cooled from the outside. This makes the pump unique and many customers, above all from the field of coating, value this highly. Thus deposits of many substances are avoided which react at high temperatures. Owing to the design of the screw rotors, a temperature of maximum 100 ☌ (212 ☏) is attained inside the pump. The low exhaust temperature is an important advantage of the Screw Vacuum Pumps. In particular, if the processes involved considerable amounts of contaminants this is a significant advantage which ensures a long uptime. Thus on-site cleaning of all surfaces in contact with the medium is possible. This innovative design feature allows the removal of the pump housing without time-consuming and costly disassembly of the bearings. On the one hand, no lubricants from the bearings can enter into the vacuum process, and the other hand also an impairment of the bearing by aggressive process media can be excluded.Ī further benefit of the cantilevered bearing arrangement is the easy accessibility of the pump chamber. a bearing on the intake side) is entirely eliminated. SCREWLINE pumps are equipped with a purge gas supply unit.īecause of the cantilevered bearing arrangement for the Screw Vacuum Pump rotors, a potential source of failure (i.e. Shaft seal purge is usually required in industrial applications. The two non-contacting shaft-seals are practically wear-free, which allows for very long maintenance intervals. This ensures a high uptime in industrial processes. The direct pumping path without multiple deflections for the medium make the Screw Vacuum Pumps highly insensitive to foreign materials. In this way maintenance and servicing work is much simplified. Since with a single Screw Vacuum Pump rotor pair a multi stage compression process is implemented, the component count in the pumping path is very low. Since the rotors rotate in opposite directions, the chambers move steadily from the intake to the exhaust side of the pumps thereby resulting in a smooth pumping action. The pumping chamber of the pump is formed by two synchronised positive displacement rotors and the housing enclosing these. Screw Vacuum Pumps are dry compressing backing pumps, the operation of which is based on the screw principle. The innovative design allows these pumps to be used whenever reliable, compact and low maintenance vacuum solutions are required. The Screw Vacuum Pumps SCREWLINE were developed in view of the special requirements of industrial applications.
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