Stator for an eccentric screw pump, an eccentric screw pump and a method for producing a stator
AssigneesNETZSCH Pumpen & Systeme GmbH, 3S Schnecken, Spindeln & Spiralen Bearbeitungsges MBH
InventorsJohann Kreidl, Walter Reisinger
Life of this patent
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Abstract
A stator for an eccentric screw pump with an internal hollow space with a helically coiled inner contour for accommodating a rotor. The stator includes a stator core arranged in a stator casing, which stator core includes at least two radially separable core parts. According to the invention, the at least two radially separable core parts are each made from a metallic material or a technical ceramic material. The stator casing is a stator tube and is made of a metallic material. The stator casing is shrink-fitted onto the stator core. The invention also relates to an eccentric screw pump and a method for producing a stator.
Claims19
A stator for an eccentric screw pump with an internal hollow space with a helically coiled inner contour for accommodating a rotor, wherein the stator comprises a stator core arranged in a stator casing, wherein the stator core comprises at least two radially separable core parts, wherein the at least two radially separable core parts are each made from a metallic material or a technical ceramic material, that the stator casing is constituted by a stator tube made of a metallic material and that the stator casing is shrink-fitted onto the stator core or that the stator core is shrink-fitted into the stator casing.
An eccentric screw pump comprising a stator with an internal hollow space with a helically coiled inner contour for accommodating a helical rotor, wherein meandering delivery spaces for the transport of material to be delivered are formed by the rotor and the stator during the operation of the eccentric screw pump, wherein the stator comprises a stator core arranged in a stator casing, wherein the stator core comprises at least two radially separable core parts, wherein the at least two radially separable core parts are each made from a metallic material or a technical ceramic material, that the stator casing is constituted by a stator tube made of a metallic material and that the stator casing is shrink-fitted onto the stator core or that the stator core is shrink-fitted into the stator casing.
A method for producing a stator comprising a stator core arranged in a stator casing, the stator core comprising an internal hollow space with a helically coiled inner contour for accommodating a rotor, wherein the stator core comprises at least two radially separable core parts, wherein the at least two radially separable core parts of the stator core are produced from a metallic material or a technical ceramic material, that the stator casing is produced as a stator tube made from a metallic material and that the stator casing is shrink-fitted onto the stator core or that the stator core is shrink-fitted into the stator casing.
Dependencies are inferred from the claim text.