Device for separating feed material
The invention relates to a device ( 1 ) for separating feed material ( 2 ) for separating a first fraction ( 3 ) comprising moist, slippery, slimy, kneadable, dough-like, cohesive and/or tough soils and/or soil materials, preferably clay-containing or clay-like adhesions, further preferably intended for use in a quarry, with a plurality of rotary elements ( 4 ) designed as helical screws, wherein a rotary element ( 4 ) has a shaft ( 5 ) and at least one helix ( 6 ) extending spirally around the shaft ( 5 ). According to the invention, at least one entraining element ( 8 ) arranged on the outer surface ( 7 ) of the shaft ( 5 ) and projecting from the outer surface ( 7 ) of the shaft ( 5 ) is provided for entraining and/or separating the first fraction ( 3 ).
1 . A device configured to separate feed material in a quarry, the device configured to separate a first fraction of soil materials comprising:
a plurality of rotary elements, wherein the rotary elements are helical screws, wherein each rotary element includes a shaft and at least one helix extending spirally around each of the respective shafts,
wherein at least one entraining element is arranged on an outer surface of each of the respective shafts and projects from the outer surface of each of the respective shafts, the at least one entraining element configured to one or more of entrain and separate the first fraction,
wherein the entraining element is one or more of a linear, bead-shaped elevation, and a strip-shaped web which is one or more of continuous and uninterrupted in a longitudinal direction of teach of the respective shafts,
wherein the at least one entraining element has a thickness of at least 1 mm, and
wherein the at least one entraining element is one or more of a build-up welding and armor plating.
2 . The device according to claim 1 , wherein:
the at least one entraining element extends in the longitudinal direction of each of the respective shafts,
the at least one entraining element extends parallel to the longitudinal direction of each of the respective shafts, or
the at least one entraining element extends at an acute angle relative to the longitudinal direction of an outer surface of each of the respective shafts.
3 . The device according to claim 1 , wherein at least one separate entraining element is arranged between respective adjacent turns of each helix, and at least bridges a distance between adjacent turns of theeach helix, wherein between 2 to 10 entraining elements are arranged equally spaced between two directly adjacent turns in the circumferential direction.
4 . The device according to claim 1 , wherein one or more of:
at least one pair of separate entraining elements arranged directly one behind the other in the longitudinal direction of each of the respective shafts are arranged offset relative to one another, wherein the offset transverse to the longitudinal direction of each of the respective shafts is between 1 mm and 80 mm, and
wherein a plurality of separate entraining elements directly adjacent in the longitudinal direction of each of the respective shafts are each arranged offset relative to one another to create a staircase structure.
5 . The device according to claim 1 , wherein the at least one entraining element has, in portions, in a cross section transverse to the longitudinal direction of each of the respective shafts, a shape of an arcuate section at an end.
6 . The device according to claim 1 , wherein the at least one entraining element has a thickness between 1 mm and 15 mm, and/or that a maximum thickness of the entraining element is less than a web height of the helix.
7 . The device according to claim 1 , wherein the at least one entraining element is connected to each of the respective shafts in a substance-locking and/or force-locking and/or form-fitting manner.
8 . The device according to claim 1 , wherein the at least one entraining element has as material wear-resistant steel with a grade of 300 HB to 600 HB, and/or
the at least one entraining element is a build-up welding seam and/or armor plating seam.
9 . The device according to claim 1 , wherein between 3 to 20, rotary elements are provided, and/or
the rotary elements are arranged and/or mounted in such a way that they form a trough-shaped and/or curved screen deck which is recessed towards the center.
10 . The device according to claim 9 , wherein an adjusting device is configured to adjust an angle of inclination of the screen deck from the feed end to the discharge end, wherein the adjusting device is configured so that an inclination of the screen deck in relation to the substrate can be varied between 0° and 40°.
11 . The device according to claim 9 , wherein the rotary elements forming the screen deck are configured such that the feed material is separated into at least two fractions, the first fraction being separable below the rotary elements and a further fraction being dischargeable above the screen deck via a discharge end of the rotary elements.
12 . The device according to claim 1 , wherein at least two directly adjacent rotary elements are arranged in counterclockwise rotation and two at least further directly adjacent rotary elements are arranged in clockwise rotation.
13 . The device according to claim 1 , wherein the helices of directly adjacent rotary elements engage and/or mesh with each other.
14 . The device according to claim 1 , wherein a further entraining element is arranged in the region of a feed end of the rotary element, which is arranged obliquely at an angle of between 4° and 30° with respect to the longitudinal direction of the shaft.
15 . The device according to claim 1 , wherein a wear element is arranged on a portion of an upper edge of each helix.
16 . The device according to claim 1 , wherein a wear element is arranged on an entirety of an upper edge of each helix.
17 . The device according to claim 1 , wherein a wear element is arranged over an entire length of each helix.
18 . The device according to claim 1 , wherein the first fraction includes clay-containing adhesions.
19 . The device according to claim 1 , wherein the device is configured for lime extraction.