FIELD: engines and pumps.
SUBSTANCE: invention relates to a screw pump. Screw pump includes housing (2) enclosing pumping chamber (5), drive spindle (7) and counter-rotating drive spindle (8), housing insert (6) in housing ( 2), in which there are spindles (7, 8), at least one bearing element (13', 13ʺ) connected to insert (6), on which there are supports (12) for spindles (7, 8), and at least one housing cover which closes the housing opening. Element (13', 13ʺ) with insert (6) and spindles (7, 8) forms module (15), which, after removing the housing cover through the housing opening, is configured to be removed from housing (2). Screw pump has at least one detachable guide rail system, which has at least one longitudinally extending screw pump guide rail on which module (15) is axially guided in housing (2).
EFFECT: invention at aimed at providing simple and cheap maintenance of a screw pump.
14 cl, 8 dwg
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