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AssigneeBuss AG
InventorsMartin Schötzau, Wolfgang Walter
Estimating the term…
A worm shaft for a mixing and kneading machine particularly for continual processing having a shaft bar, on the circumferential surface of which blade elements are arranged to be spaced apart from one another extending outwards from the circumferential surface of the shaft bar, wherein the blade elements are arranged on the circumferential surface of the shaft bar, at least in one section extending in the axial direction of the worm shaft, in two rows extending in the axial direction of the worm shaft, and wherein each of the blade elements of the at least one section extending in the axial direction of the worm shaft has an elliptic, oval, or biconvex outer peripheral surface in the top view.
A worm shaft (12) for a mixing and kneading machine (100) having a shaft bar (20) having a circular cross-section, on the circumferential surface of which blade elements (22, 22′, 22″, 22′″) extending outwards from the circumferential surface of the shaft bar (20) are arranged to be spaced apart from one another, wherein the blade elements (22, 22′, 22″, 22′″) are arranged on the circumferential surface of the shaft bar (20), at least in one section extending in the axial direction of the worm shaft (12), in two rows (40, 40′) extending in the axial direction of the worm shaft (12), wherein this section extending in the axial direction of the worm shaft (12) does not comprise any further blade elements except those arranged in the two rows, wherein the section of the worm shaft (12) extending in the axial direction in which each of the blade elements (22, 22′, 22″, 22′″) has the aforementioned form of outer peripheral surface is at least 0.2 D of the length of the worm shaft (12), wherein D is the diameter of the worm shaft (12), and further wherein each of the blade elements (22, 22′, 22″, 22′″) of the at least one section extending in the axial direction of the worm shaft (12)—as seen in the cross-section of the shaft bar (20)—extends over an angular distance of at least 180°.
A section for a worm shaft (12) having a shaft bar (20) with a circular cross-section, wherein on the circumferential surface of the shaft bar (20), blade elements (22, 22′, 22″, 22′″) extending outwards from the circumferential surface of the shaft bar (20) are arranged to be spaced apart from one another, wherein the blade elements (22, 22′, 22″, 22′″) are arranged on the shaft bar (20) in two rows (40, 40′) extending in the axial direction of the worm shaft (12) over at least one section of the circumferential surface of the shaft bar (20), wherein this section extending in the axial direction of the worm shaft (12) does not comprise any further blade elements except those arranged in the two rows, wherein the section of the worm shaft (12) extending in the axial direction in which each of the blade elements (22, 22′, 22″, 22′″) has the aforementioned form of outer peripheral surface is at least 0.2 D of the length of the worm shaft (12), wherein D is the diameter of the worm shaft (12), and wherein each row (40, 40′) comprises one, two, three, or four blade elements (22, 22′, 22″, 22′″) arranged to be axially spaced apart from one another, and further wherein each of the blade elements (22, 22′, 22″, 22′″) of the at least one section extending in the axial direction of the worm shaft (12)—as seen in the cross-section of the shaft bar (20)—extends over an angular distance of at least 180°.
Dependencies are inferred from the claim text.