A cylindrical screening device including a plurality of profile bars, in which a number of ring shaped bar holders are arranged perpendicular to a cylinder axis and spaced apart from one another, or bundles of a number of bar holders spaced apart from one another are provided on the inside or the outside with open-edged recesses. The shape of the recesses correspond in a substantially complementary manner to that of the feet of the profile bars. The profile bars are inserted into the recesses, parallel to one another and parallel to the cylinder axis, wherein an outer bar holder is in each case arranged in the region of a respective face-side end ring of the screening device. The attachment of the end ring is simplified in that the outer bar holder is detachably connected with the end ring.

A rock separator for separating rocks from soil, where the rock separator includes a mounting plate a plurality of elongate tines secured to the mounting plate, where the plurality of elongate tines define a curved shape across the mounting plate, a plurality of support members laterally joining the plurality of elongate tines and an attachment bracket on the mounting plate for releasably mounting to a machine. The mounting plate has a first major surface and a second major surface opposite the first major surface. The attachment bracket is attached directly to the mounting plate, where the plurality of elongate tines do not move relative the attachment bracket.

A rock separator for separating rocks from soil, where the rock separator includes a mounting plate a plurality of elongate tines secured to the mounting plate, where the plurality of elongate tines define a curved shape across the mounting plate, a plurality of support members laterally joining the plurality of elongate tines and an attachment bracket on the mounting plate for releasably mounting to a machine. The mounting plate has a first major surface and a second major surface opposite the first major surface. The attachment bracket is attached directly to the mounting plate, where the plurality of elongate tines do not move relative the attachment bracket.

A self-cleaning, automated apparatus with a filter for fluids includes a nozzle unit assembly that has a first tube inside a second tube. Each of the tubes has a different pattern of one or more slots or holes. One tube rotates while the other is fixed, so that part of the pattern of one coincides with the other at times, resulting in a jet of cleaning fluid that removes debris from a filter. The filter is rotated so the jet can reach all parts to be cleaned. The pattern of the rotating tube may approximate a helix and the pattern of the fixed tube may approximate a line.

A fiber processing device includes a drum having a plurality of openings on an outer peripheral surface, sieving a raw material containing fibers, and configured to rotate about a rotation axis, a housing that supports the drum, a guide portion (convex portion) provided on an outer peripheral surface of the drum; and a restriction portion (bearing) that restricts movement of the drum in a direction of the rotation axis by contacting the convex portion. At least one of the restriction portion and the guide portion is configured to rotate about an axis (rotation axis) orthogonal to the rotation axis.

A multi-screen drilling mud screen system, comprises a drilling mud screen comprising a body, a drilling mud or completion fluid inlet at the first end of the body (or outlet at the second end of the body), a filter having openings, wherein the filter is fluidly connected to the body, a drilling mud or completion fluid outlet (or inlet) at the openings of the filter, and an end cap connected to the filter, wherein the filter comprises a plurality of rods spaced a distance apart disposed within a formed sheet having drilled holes or slots spaced apart to form the openings in the filter, or a wire wrap disposed within a formed sheet having drilled holes or slots spaced apart to form the openings in the filter. Methods of installing and using the drilling mud screen are also disclosed.

A stem screening and conditioning device includes a roller, a thermal insulation cover, a spiral feeding device, a compressed-air cleaning device, a steam tube, a discharge hole, and a waste hole. A stem screening and conditioning method for the stem screening and conditioning device is also provided. The present disclosure realizes the complete separation of normal-size and undersized stems under the premise of full moisture absorption, thereby improving the refinement and homogenization level of stem conditioning.

A stem screening and conditioning device includes a roller, a thermal insulation cover, a spiral feeding device, a compressed-air cleaning device, a steam tube, a discharge hole, and a waste hole. A stem screening and conditioning method for the stem screening and conditioning device is also provided. The present disclosure realizes the complete separation of normal-size and undersized stems under the premise of full moisture absorption, thereby improving the refinement and homogenization level of stem conditioning.

A device to de-ionize a build material, a method to de-ionize, and a 3D printer system including the device are disclosed. The device includes a housing having an outlet port and an enclosed sieve within the housing. An inlet port is coupled to a first end the enclosed sieve to provide the build material. A drive actuator is coupled to a second end of the enclosed sieve. The housing and the enclosed sieve may be made of a polymer selected from the build material and a chemically-similar polymer to the build material.

A horizontal axis rotary separation apparatus is deployed in a process for separating resinous trichomes rich in flavoring, aromatic and/or medicinal components produced in plant trichome glands from unwanted plant matter. The process physically separates resin rich beads at the trichome gland head from extraneous plant matter by one or move separation sieves. The sieves are provided in or as a casing over a rigid frame member. The sieves are mesh fabric bags or screen that are easily opened and replenished in a batch operating mode, and are removable from the frame for cleaning and maintenance. Other aspects of the invention include processes that improve process efficiency and speed, and yield products of superior quality.