Abstract: A pump insert (1) for arranging in an accommodating space (104), the pump insert (1) comprising: a pump (10) comprising a pump chamber (15) and a delivery element (11) which can rotate about a rotational axis (D) and which is arranged in the pump chamber (15); an electric motor (20) comprising a rotor (21), which can rotate about the rotational axis (D), and a stator (22); and a drive shaft (30) which is mounted such that it can rotate about the rotational axis (D), wherein the rotor (21) and the delivery element (11) are connected via the drive shaft (30) in such a way that rotating the rotor (21) causes the delivery element (11) to rotate.

Abstract: A rotary pump includes a housing featuring a delivery space which the housing surrounds and axially delineates on the end sides; an inner rotor rotatable in the delivery space; an outer rotor rotatable about a pump rotational axis in the delivery space and forming delivery cells with the inner rotor; and a circumferential bearing wall which mounts and surrounds the outer rotor rotatably about the pump rotation axis in radial sliding contact. The circumferential bearing wall includes multiple blind pockets which are radially open towards the outer rotor and/or the outer rotor includes multiple blind pockets which are radially open towards the circumferential bearing wall.

Abstract: A valve arrangement to allow a fluid flow in a first direction and block it in a second direction opposite the first direction. The valve arrangement includes: a fluid channel, a valve seat and a closing body arranged in the fluid channel. The closing body prevents fluid flow in the second direction when resting against the valve seat and allows fluid flow in the first direction when the closing body is lifted off the valve seat; a closing body holder in the fluid channel configured to restrict movement of the closing body in the first direction when the closing body is lifted off the valve seat. The closing body holder held on an inner circumferential wall of the fluid channel in a frictional fit and/or movable in the first direction in a position in which the closing body holder is held on an inner circumferential wall of the fluid channel.

Abstract: A rotary pump, including: a housing featuring a delivery space which includes an inlet for a fluid on a suction side of the rotary pump and an outlet for the fluid on a pressure side of the rotary pump; an inner rotor which is arranged in the delivery space; an outer rotor which is arranged in the delivery space and forms delivery cells with the inner rotor, wherein an outer circumferential wall of the outer rotor is mounted in a sliding manner on an inner circumferential wall of the delivery space, wherein the inner circumferential wall of the delivery space and/or the outer circumferential wall of the outer rotor comprises at least one pocket.

Abstract: A rotary pump, the rotational direction of which can preferably be switched, featuring: a housing including a pump space featuring an inlet into a low-pressure region of the pump space for a fluid to be pumped and an outlet from a high-pressure region of the pump space for the fluid to be pumped; at least one rotor which forms delivery cells in the pump space; a bearing; and a sealing stay which axially faces the at least one rotor and separates the low-pressure region from the high-pressure region in the rotational direction of the at least one rotor; and featuring at least one lubricant feed, in the sealing stay, which feeds a fluid, as a lubricant, from at least one of the delivery cells to the bearing.

Abstract: A pump insert (1) for arranging in an accommodating space (104), the pump insert (1) comprising: a pump (10) comprising a pump chamber (15) and a delivery element (11) which can rotate about a rotational axis (D) and which is arranged in the pump chamber (15); an electric motor (20) comprising a rotor (21), which can rotate about the rotational axis (D), and a stator (22); and a drive shaft (30) which is mounted such that it can rotate about the rotational axis (D), wherein the rotor (21) and the delivery element (11) are connected via the drive shaft (30) in such a way that rotating the rotor (21) causes the delivery element (11) to rotate.

Abstract: A valve arrangement to allow a fluid flow in a first direction and block it in a second direction opposite the first direction. The valve arrangement includes: a fluid channel, a valve seat and a closing body arranged in the fluid channel. The closing body prevents fluid flow in the second direction when resting against the valve seat and allows fluid flow in the first direction when the closing body is lifted off the valve seat; a closing body holder in the fluid channel configured to restrict movement of the closing body in the first direction when the closing body is lifted off the valve seat. The closing body holder held on an inner circumferential wall of the fluid channel in a frictional fit and/or movable in the first direction in a position in which the closing body holder is held on an inner circumferential wall of the fluid channel.

Abstract: A rotary pump with a rotational direction which can be switched, including: a housing which has a pump space featuring an inlet into a low-pressure region of the pump space for a medium to be pumped and an outlet out of a high-pressure region of the pump space for the medium to be pumped; at least one rotor; at least one bearing for the at least one rotor; at least one sealing stay which axially faces the rotor and separates the low-pressure region from the high-pressure region in the rotational direction of the rotor; and a lubricant feed which feeds a lubricant from the pump space to at least the bearing, wherein the lubricant feed is formed in the sealing stay.

Abstract: A rotary pump, the rotational direction of which can preferably be switched, featuring: a housing including a pump space featuring an inlet into a low-pressure region of the pump space for a fluid to be pumped and an outlet from a high-pressure region of the pump space for the fluid to be pumped; at least one rotor which forms delivery cells in the pump space; a bearing; and a sealing stay which axially faces the at least one rotor and separates the low-pressure region from the high-pressure region in the rotational direction of the at least one rotor; and featuring at least one lubricant feed, in the sealing stay, which feeds a fluid, as a lubricant, from at least one of the delivery cells to the bearing.

Abstract: A rotary pump, including: a housing featuring a delivery space which includes an inlet for a fluid on a suction side of the rotary pump and an outlet for the fluid on a pressure side of the rotary pump; an inner rotor which is arranged in the delivery space; an outer rotor which is arranged in the delivery space and forms delivery cells with the inner rotor, wherein an outer circumferential wall of the outer rotor is mounted in a sliding manner on an inner circumferential wall of the delivery space, wherein the inner circumferential wall of the delivery space and/or the outer circumferential wall of the outer rotor comprises at least one pocket.

Abstract: A rotary pump with a rotational direction which can be switched, including: a housing which has a pump space featuring an inlet into a low-pressure region of the pump space for a medium to be pumped and an outlet out of a high-pressure region of the pump space for the medium to be pumped; at least one rotor; at least one bearing for the at least one rotor; at least one sealing stay which axially faces the rotor and separates the low-pressure region from the high-pressure region in the rotational direction of the rotor; and a lubricant feed which feeds a lubricant from the pump space to at least the bearing, wherein the lubricant feed is formed in the sealing stay.

Abstract: A rotary pump with an improved seal on a control pressure chamber, including: a housing having a delivery chamber; a feed wheel rotatable in the delivery chamber; an actuating member surrounding the feed wheel forming delivery cells and moveable in the housing relative to the feed wheel. The control pressure chamber is delineated by the actuating member together with axially facing axial co-operating surfaces, forming an axial sealing gap and a radial sealing gap. A control fluid can be introduced into the control pressure chamber for applying pressure to the actuating member to exert an actuating force in the actuating direction; a restoring device for generating a restoring force; and a sealing element arranged on the actuating member or the circumferential co-operating surface. To compensate for a change in gap width of one of the axial sealing gaps, a base leakage cross-section is provided on the sealing element.