Abstract: A pump system and a method for pumping viscous or partially viscous media out of a borehole. The pump system includes a well pipe which is installed in the borehole and a motor which is coupled to an eccentric screw pump, the eccentric screw pump including one or more stators and one or more rotors which are received in the stator(s) so as to rotate eccentrically. One or more connection mechanisms fix the eccentric screw pump in the well pipe in a force-fitting and/or formfitting manner. For the purpose of removing the eccentric screw pump from the borehole, the eccentric screw pump is held by means of the one or more connection mechanisms with an axial freedom of movement.

Abstract: A submersible pump assembly for use in a borehole, including a screw pump and/or an eccentric screw pump with a longitudinal axis. The submersible assembly further includes a drive and a bearing arrangement for taking up and diverting the axial and/or radial forces arising during the operation of the screw pump and/or eccentric screw pump. The drive is disposed, via a first coupling rod, at one end of the screw pump and/or eccentric screw pump and the bearing arrangement is assigned, via a second coupling rod, to the opposite end of the screw pump and/or eccentric screw pump along the longitudinal axis.

Abstract: A pump system and a method for pumping viscous or partially viscous media out of a borehole. The pump system includes a well pipe which is installed in the borehole and a motor which is coupled to an eccentric screw pump, the eccentric screw pump including one or more stators and one or more rotors which are received in the stator(s) so as to rotate eccentrically. One or more connection mechanisms are also provided, by means of which the eccentric screw pump is fixed in the well pipe in a force-fitting and/or formfitting manner. For the purpose of removing the eccentric screw pump from the borehole, the eccentric screw pump is held by means of the one or more connection mechanisms with an axial freedom of movement.

Abstract: A sealing and bearing unit for at least two shafts orientated in parallel with one another is disclosed. The sealing and bearing unit includes a housing preferably constituted in one piece with at least two openings for the at least two shafts orientated in parallel with one another. There are assigned to each opening at least one bearing for the rotational holding of the respective shaft in the housing and at least one seal interposed between the housing and the respective shaft. Furthermore, there is assigned in each case to the respective at least one bearing and to the respective at least one seal at least one individual fixing for their independent connection to the housing.

Abstract: A sealing and bearing unit for at least two shafts orientated in parallel with one another is disclosed. The sealing and bearing unit includes a housing preferably constituted in one piece with at least two openings for the at least two shafts orientated in parallel with one another. There are assigned to each opening at least one bearing for the rotational holding of the respective shaft in the housing and at least one seal interposed between the housing and the respective shaft. Furthermore, there is assigned in each case to the respective at least one bearing and to the respective at least one seal at least one individual fixing for their independent connection to the housing.

Abstract: A submersible pump assembly for use in a borehole, including a screw pump and/or an eccentric screw pump with a longitudinal axis. The submersible assembly further includes a drive and a bearing arrangement for taking up and diverting the axial and/or radial forces arising during the operation of the screw pump andor eccentric screw pump. The drive is disposed, via a first coupling rod, at one end of the screw pump and/or eccentric screw pump and the bearing arrangement is assigned, via a second coupling rod, to the opposite end of the screw pump and/or eccentric screw pump along the longitudinal axis.