Horizontally split screw-spindle pump

Screw pump, in particular a single- or multi-flow twin screw pump, comprising a multi-part housing and at least two coupled, chamber-forming rotors that each comprise at least one thread-like profiling that is formed at least in regions and that has helical channels and partition walls defining the channels, wherein the rotors perform a counter- rotating rotor rotation and the partition walls mesh with one another in the manner of gears, and a running housing part, wherein the running housing part surrounds the rotors in a contactless manner, wherein the rotors, together with the running housing part, form at least one delivery chamber for the fluid that is to be delivered, wherein the delivery chamber migrates axially along the rotor axes and delivers the fluid from a suction chamber into a pressure chamber, a suction- side connection element that is fluidically connected to the suction chamber, and a pressure-side connection element that is fluidically connected to the pressure chamber,

• wherein the suction-side connection element and the pressure-side connection element are arranged on a connection housing part of the multi-part housing, wherein the housing comprises a planar dividing plane that extends so as to be in parallel with the rotor axes, between the running housing part and the connection housing part, wherein the connection housing part is separated from the running housing part by the dividing plane, and
• wherein the dividing plane does not extend inside the rotor axes, so that the rotor axes are not directly exposed when the running housing part and connection housing part are dismantled, wherein the rotors are mounted in the running housing part by means of bearings.