The Eccentric screw pump B70V-D 12.1 in the industrial version is a powerful positive displacement pump for medium, high viscosity and viscous media up to the limits of flowability. Depending on the application, various three-phase and air motors are available, which you can combine with the Pump tube at any time. This gives you flexibility at all times and saves important resources.To get more news about Screw pump rotor, you can visit hw-screwpump.com official website.

The unit is designed for operation at the attended premises (location category 3), and is manufactured in climatic version U as per GOST 15150-69; it is intended for operation in the atmosphere of II type as per GOST 15150-69.  Three-screw pump AS-ЗV 8/25 being part of the electric pump unit is related to the items of specific purpose (IKN), item aspect I (repairable) as per GOST 27.003-90.

The unit is of aseismic design. Earthquake stability category II in conformity with NP-031-01.The unit maintains its strength, air-tightness and serviceability during and after PZ - 7 points earthquake as per MSK-64 scale at the mark minus 5,0 m.

DESIGN Electric pump unit consists of three-screw pump, connecting piece, coupling and electric motor.As to the principle of operation the three-screw pump – is a positive displacement machine.

Pump consists of the following main details and subassemblies: pump casing, shell, one driving and two driven screws, end-face seal.

The thread of screws is made with a special profile ensuring their mutual conjugation, the thread is of the double-start type, left-hand on the drive screw and right-hand on the driven screws.

During rotation of screws a rarefaction is created in the pump suction chamber, as a result the pumped liquid is fed to the screw thread hollows mutually closed during rotation of the screws. The liquid volume closed in the screw thread moves in the shell rectilinearly without mixing, and then it is forced into the discharge chamber.