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US 11,779,891 B2Granted
Asymmetrical three-blade screw-type shaft for a mixing and kneading machine
AssigneeBuss AG
InventorsMartin Schötzau, Wolfgang Walter
Life of this patent
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AssigneeBuss AG
InventorsMartin Schötzau, Wolfgang Walter
Estimating the term…
A worm shaft for a mixing and kneading machine in particular for continuous preparation processes, comprising a shaft rod, on the circumferential surface of which blade elements are arranged which are spaced apart from one another and which extend outward from the circumferential surface of the shaft rod, wherein the blade elements are arranged on the shaft rod, at least in one section extending in the axial direction of the worm shaft, in three rows extending in the axial direction of the worm shaft, wherein at least one of the blade elements of one of the rows is different from one of the blade elements of one of the other rows, and/or the rows of blade elements, viewed in cross-section of the shaft rod, are distributed irregularly over the circumference defined by the outer circumferential surface of the shaft rod, and wherein the angular distance between the midpoints M of the outer circumferential surfaces of the blade elements on the circumferential surface of the shaft rod of adjacent rows differs between at least two of the three rows of the at least other two rows, and including wherein, for example, each of the blade elements of the at least one section extending in the axial direction of the worm shaft has a longitudinal extension which extends in an angle of 45° to 135° to the axial direction of the worm shaft.
A worm shaft (12) for a mixing and kneading machine (100) having a shaft rod (20) having a circular cross-section, on the circumferential surface of which blade elements (22, 22′, 22″, 22′″, 22iv, 22v) are arranged which are spaced apart from one another and which extend outwards from the circumferential surface of the shaft rod (20) wherein the blade elements (22, 22′, 22″, 22″′, 22iv, 22v) are arranged on the circumferential surface of the shaft rod (20), at least in one section extending in the axial direction of the worm shaft (12), in three rows (40) extending in the axial direction of the worm shaft (12), wherein the entire circumferential surface of this section extending in the axial direction of the worm shaft (12) does not comprise any further blade elements except those arranged in the three rows (40), wherein i) at least one of the blade elements (22, 22′, 22″, 22″′, 22iv, 22v) of at least one other of the both rows (40) is different from one of the blade elements (22, 22′, 22″, 22″′, 22iv, 22v) of one of the other rows (40) by being shorter and/or narrower, and/or ii) the rows (40) of the blade elements (22, 22′, 22″, 22″′, 22iv, 22v), viewed in cross-section of the shaft rod (20), are distributed irregularly over the circumference defined by the outer circumferential surface of the shaft rod (20), so that the angular distance between the midpoints M of the outer circumferential surfaces of the blade elements (22, 22′, 22″, 22″′, 22iv, 22v) on the circumferential surface of the shaft rod (20) of adjacent rows (40) differs between at least two of the three rows (4) of the at least other two rows (40);
A section for a worm shaft (12) with a shaft rod (20) having a circular cross-section, wherein spaced-apart blade elements (22, 22′, 22″, 22″′, 22iv, 22v) extending outward from the circumferential surface of the shaft rod (20) are arranged on the circumferential surface of the shaft rod (20), wherein the blade elements (22, 22′, 22″, 22″′, 22iv, 22v) are arranged on the circumferential surface of the shaft rod (20) in three rows (40) extending in the axial direction of the worm shaft (12), wherein the entire circumferential surface of the section extending in the axial direction of the worm shaft (12) does not comprise any further blade elements except those arranged in the three rows (40), wherein i) at least one of the blade elements (22, 22′, 22″, 22″′, 22iv, 22v) of one of the both rows (40) is different from at least one other of the blade elements (22, 22′, 22″, 22″′, 22iv, 22v) of one of the other rows (40) by being shorter and/or narrower, and/or ii) the rows of the blade elements (22, 22′, 22″, 22″′, 22iv, 22v), viewed in the cross-section of the shaft rod (20), are distributed irregularly over the circumference defined by the outer circumferential surface of the shaft rod (20), and wherein each row (40) comprises one, two, three, or four blade elements (22, 22′, 22″, 22″′, 22iv, 22v) axially separated from one another, so that the angular distance between the midpoints M of the outer circumferential surfaces of the blade elements (22, 22′, 22″, 22″′, 22iv, 22v) on the circumferential surface of the shaft rod (20) of adjacent rows (40) differs between at least two of the three rows (4) of the at least other two rows (40);
Dependencies are inferred from the claim text.