초록 ▼

An eccentric screw pump has a plurality of segments extending along an axis and together forming a tubular casing generally centered on the axis and a plurality of axially extending stator shells of elastic material together forming inside the casing a tubular stator having axially opposite ends eac

An eccentric screw pump has a plurality of segments extending along an axis and together forming a tubular casing generally centered on the axis and a plurality of axially extending stator shells of elastic material together forming inside the casing a tubular stator having axially opposite ends each having centered on the axis a frustoconical end seal surface. The stator shells are separable from the casing segments. An intake housing has a connecting flange formed centered on the axis with a frustoconical flange surface fitted with one of the end seal surfaces of the stator, and an output fitting has a connecting flange formed centered on the axis with a frustoconical flange surface fitted with the other of the end seal surfaces of the stator. A rotor extends axially in the stator, the stator being clamped by the casing against the rotor.

대표청구항 ▼

1. An eccentric screw pump comprising: a plurality of segments extending along an axis and together forming a tubular casing generally centered on the axis;a plurality of axially extending stator shells of elastic material together forming inside the casing a tubular stator having axially opposite e

1. An eccentric screw pump comprising: a plurality of segments extending along an axis and together forming a tubular casing generally centered on the axis;a plurality of axially extending stator shells of elastic material together forming inside the casing a tubular stator having axially opposite ends each having centered on the axis a frustoconical end seal surface, the stator shells being separable from the casing segments;an intake housing having a connecting flange formed centered on the axis with a frustoconical flange surface fitted with one of the end seal surfaces of the stator;an output fitting having a connecting flange formed centered on the axis with a frustoconical flange surface fitted with the other of the end seal surfaces of the stator; anda rotor extending axially in the stator, the stator being clamped by the casing against the rotor. 2. The eccentric screw pump according to claim 1, further comprising; respective adaptors connecting the flanges to the end surfaces of. 3. The eccentric screw pump according to claim 1 wherein an apex angle of the seal surfaces is approximately 10° to 50°. 4. The eccentric screw pump according to claim 1 wherein the casing segments bear externally against the stator and have end attachment flanges for attachment to the connecting flanges. 5. The eccentric screw pump according to claim 4, further comprising: fasteners clamping the attachment flanges to the connecting flanges. 6. The eccentric screw pump according to claim 5, wherein the fasteners are screw assemblies. 7. The eccentric screw pump according to claim 4 wherein the attachment flanges form an adjustable annular gap with the connecting flanges. 8. The eccentric screw pump according to claim 4 wherein the attachment flanges overlap or surround the connecting flange. 9. The eccentric screw pump according to claim 1 wherein one or more of the stator shells has at least one externally projecting rotation-blocking formation. 10. The eccentric screw pump according to claim 9, wherein the rotation-blocking formations us longitudinal ridge attached onto outside of the stator shells. 11. The eccentric screw pump according to claim 10, wherein the longitudinal ridge has end faces acting as axial stops.