EP4263958A1 - Godet séparateur et cribleur à arbres à vis sans fin - Google Patents

Godet séparateur et cribleur à arbres à vis sans fin

Info

Publication number
EP4263958A1
EP4263958A1 EP21844187.1A EP21844187A EP4263958A1 EP 4263958 A1 EP4263958 A1 EP 4263958A1 EP 21844187 A EP21844187 A EP 21844187A EP 4263958 A1 EP4263958 A1 EP 4263958A1
Authority
EP
European Patent Office
Prior art keywords
worm
shafts
shaft
drive device
blade according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21844187.1A
Other languages
German (de)
English (en)
Inventor
Clemens Rickert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE102020133475.3A external-priority patent/DE102020133475A1/de
Priority claimed from DE102020133474.5A external-priority patent/DE102020133474A1/de
Application filed by Individual filed Critical Individual
Publication of EP4263958A1 publication Critical patent/EP4263958A1/fr
Pending legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F7/00—Equipment for conveying or separating excavated material
    • E02F7/06—Delivery chutes or screening plants or mixing plants mounted on dredgers or excavators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/12—Apparatus having only parallel elements
    • B07B1/14—Roller screens
    • B07B1/15—Roller screens using corrugated, grooved or ribbed rollers

Definitions

  • the present invention relates to a separator shovel for attachment to working implements, such as excavators, wheel loaders or similar implements.
  • a separator blade can be used to separate coarse soil from fine soil material. While the coarse soil material is retained in the bucket, the fine soil material can trickle out of the bucket through a plurality of openings.
  • Separator blades which have a loading opening at the front and a blade back which is essentially parallel to the loading opening at the rear and which is designed as a screen surface and comprises two or three rotationally symmetrically rotatable screen shafts/screen drums.
  • the object of the invention is to provide a separator blade that overcomes the disadvantages known from the prior art.
  • the task can be seen as providing a separator blade that prevents the material from jamming between the screen shafts or between the screen shafts and side walls.
  • a further object can be seen in providing a shovel with an increased screening performance.
  • a separator blade comprising two side walls, a blade base arranged between the side walls, a blade rear arranged between the side walls and adjoining the blade base, and a drive device, the blade base and/or the blade rear having a screen surface that has a A plurality of worm shafts that are spaced apart from one another and can be rotated by the drive device.
  • the material in the shovel is moved by the rotating auger shafts in such a way that the fine material can trickle through the openings between the shafts.
  • the material not only performs an essentially two-dimensional movement, as for example in the blade separators known from the prior art, but is also conveyed or moved along the screw shafts and thus performs a three-dimensional movement. This goes hand in hand with increased sieving and separating performance and a reduction in the risk of material becoming jammed.
  • a worm shaft is a shaft with a worm spiral running around it.
  • Worm shafts thus comprise a worm helix, which as a rule extends as a wound metal sheet around a cylindrical or tubular worm hub on the outside.
  • Each of the shafts of the screen surface is preferably designed as a worm shaft.
  • worm shafts can also be understood according to the invention as shafts with a large number of discs which are arranged obliquely to the axis of rotation of the shafts and are spaced apart from one another and surround the shaft circumferentially.
  • the angles between the discs and the shaft hubs on which the discs are arranged are preferably the same over the entire screen surface and are preferably in the range of 20°-70°.
  • the blade base can form a flat and/or an upwardly curved surface.
  • the upwardly curved surface of the blade bottom can have different radii of curvature.
  • the blade base preferably has a flat surface, which preferably bears tangentially on the cutting edge, with the flat surface merging into a surface curved upwards.
  • the blade base is defined as the surface that lies in a plane spanned by the cutting edge and the surface that borders the cutting edge and whose tangents of the circle of curvature associated with the respective point of contact form an angle of less than 90° to the plane spanned by the cutting edge .
  • the face is defined as the back of the blade.
  • the bucket bottom may include a screen surface formed by spaced worm shafts.
  • the blade back can comprise a screening surface formed by screw shafts spaced apart from one another.
  • both the blade base and the blade back each comprise a screen surface.
  • the shovel has a bucket base lying at the bottom and running continuously upwards, with the bucket base merging directly into the back of the bucket.
  • a separator shovel in which the bottom of the shovel includes a sieve surface enables the excavated material to be separated during the shoveling process.
  • the screen surface of the blade base preferably extends into the back of the blade.
  • the shovel thus preferably comprises a large coherent screen surface formed by the screw shafts. Such a separator blade enables screening in almost any blade position.
  • the cutting edge is preferably designed as a plate which forms the front part of the blade base.
  • the rotatable screw shafts are therefore preferably not arranged in one plane.
  • the screen surface is preferably formed entirely by the screw shafts.
  • the screw shafts are arranged at a distance from one another in such a way that there are clearances between the shafts, which represent the screen openings.
  • the screen surface preferably comprises at least 5, particularly preferably at least 10, screw shafts. All screw shafts are preferably of identical design.
  • the worm shafts preferably extend from one side wall to the other side wall, the worm shafts particularly preferably extending through both side walls.
  • the screw shafts are preferably arranged in such a way that they can rotate about their longitudinal axes, which are arranged parallel to one another.
  • the worm shafts are preferably rotatably mounted in bearings on the outside of the side walls.
  • the drive device is designed in such a way that it can set the worm shafts into a preferably synchronous rotation.
  • the screen area takes up at least 50%, preferably at least 70%, particularly preferably at least 90% of the area of the blade base.
  • the cutting edge preferably occupies less than 50%, preferably less than 30%, particularly preferably less than 10% of the area of the blade base. With such a screen surface, a large part of the shovel base is available as a screen surface, so that efficient screening is guaranteed.
  • the screen surface occupies at least 50%, preferably at least 70%, particularly preferably at least 90% of the surface of the back of the blade.
  • the worm shafts are designed as non-intermeshing worm shafts.
  • the coiled metal sheet preferably protrudes radially outward approximately at right angles from the screw hub to such an extent that the metal sheet or the screw helix only almost touches the screw helix of the adjacent screw shafts.
  • the sum of the lengths that the spirals extend radially outward is less than the distance between the worm hubs of these worm shafts.
  • Such an embodiment further reduces the risk of material becoming jammed between two adjacent screw shafts.
  • such an embodiment allows an asynchronous rotation of the worm shafts, i.e. a rotation with different
  • Each worm shaft preferably runs through an intermediate bearing, which is preferably arranged in a web running parallel to the side walls.
  • Intermediate bearings of this type are particularly advantageous for stabilizing the screw shafts in the case of a wide separator blade, in which the side walls are spaced far apart from one another. It is also provided according to the invention that each worm shaft runs through more than one intermediate bearing.
  • Bearings of a worm shaft are to be understood as meaning the bearings of a worm shaft through which the worm shaft runs. These bearings can thus be the bearings arranged on the side cheeks as well as intermediate bearings. Neighboring bearings of a worm shaft are therefore not to be understood as meaning the bearings of different worm shafts.
  • Each shaft of the screen surface is preferably designed as a worm shaft over the entire length with a worm helix running around the worm hub.
  • Each worm shaft preferably has at least one left-hand helix and at least one right-hand helix area.
  • Each worm shaft particularly preferably has exactly one left-hand helix and exactly one right-hand helix region between two adjacent bearings of the respective worm shaft.
  • adjacent means the components that are arranged directly adjacent.
  • Screw shafts of this type which have one or more left-hand helix and one or more right-hand helix areas, have an increased separating capacity, since the coarse material lying directly on the screw shaft is not transported over the entire length to a side wall before it is pushed away from the shovel bottom, but rather is only transported a short distance directly resting on the worm shaft.
  • the left and right-hand coiled areas of each worm shaft are arranged in such a way that material located on the respective worm shaft is conveyed away from the bearings of the respective worm shaft when the worm shaft rotates.
  • all of the worm shafts are aligned such that the worm flights of the shafts face the worm flights of the adjacent shafts and almost contact each other.
  • the screw shafts are thus preferably aligned in such a way that the helixes have the smallest possible distance--in the direction perpendicular to the longitudinal axis of the shafts--to the helixes of the adjacent screw shafts.
  • the worm shafts are aligned in such a way that the imaginary radial extensions of the flights of each worm shaft are exactly aligned with the flights of the adjacent worm shafts.
  • each worm shaft is thus arranged in a different rotational position than the adjacent worm shafts.
  • every other worm shaft is in the same rotational position.
  • Preferably half of the worm shafts are arranged in a first rotational position and the other half of the worm shafts are arranged in the second rotational position.
  • the shafts are rotated by exactly 180° about the longitudinal axis compared to the second rotational position.
  • Screw pitch is to be understood as meaning the distance parallel to the longitudinal axis of the screw shaft between two adjacent partial coil elements of a coil. All screw shafts preferably have a uniform and constant screw pitch.
  • the pitch of the worm spirals of the worm shafts is equal to or greater than the distance between two adjacent worm shaft hubs, the gap dimension.
  • the smallest screen opening in the transverse direction, ie perpendicular to the longitudinal axis of the waves by the distance between the Worm shaft hubs fixed to each other.
  • the minimum openings between two spirals of two worm shafts facing each other are not taken into account here.
  • the gap dimension is preferably uniformly large over the entire screen surface, regardless of the rotational position.
  • the size of the screen openings in the longitudinal direction are determined by the screw shaft pitches.
  • the worm flights or the edges of the worm flights, at least the worm flights that are arranged next to a fixed element, such as a side wall or web, are rounded off or provided with a chamfer.
  • the screw flights are preferably designed in such a way that they have a conical cross-sectional profile. This prevents material from becoming jammed between a worm shaft and a stationary element, as the material is pushed up along the helix by the hub. This can be of particular importance in reversing operation, in which the material is transported in the direction of the side wall.
  • the worm shafts preferably include one or more areas in which the worm hubs are designed with an enlarged diameter, that is to say thickened, and/or one or more areas in which a casing surrounds the worm shaft.
  • the distance from a thickened screw shaft hub or casing to a thickened screw shaft hub or casing of an adjacent screw shaft preferably corresponds to the gap size, ie the desired screening.
  • the worm shafts preferably do not include worm flights or worm flights with a reduced screw flight height.
  • These portions of the auger shafts are preferably located where the left and right hand helixes meet and/or between the exit auger flights and a bearing.
  • the casing can be ring-shaped and have a conical cross-sectional profile.
  • the thickening of the worm shaft hub can be bead-shaped or can extend circumferentially outwards with a conical cross-sectional profile.
  • the worm shafts are driven alternately.
  • the screw shafts are preferably driven alternately on the left and right. Every second shaft is therefore driven from the left-hand side frame and the shafts in between are driven from the right-hand side frame.
  • the drive device includes at least one gear.
  • the drive device comprises a gearbox on each outer side of the side walls.
  • Each worm shaft is preferably coupled to a gearbox.
  • a shaft is preferably coupled to the transmission by means of a power transmission wheel, preferably in the form of a gear wheel.
  • the power transmission wheel can be part of the worm shaft or, in a multi-part embodiment, the shaft can be non-rotatably connected to the power transmission wheel.
  • the power transmission wheel is located at one of the head ends of the shaft.
  • the other head end of the worm shaft can also comprise a gear wheel which is preferably not non-rotatably connected to the shaft but is used, for example, only to guide the chain or toothed belt of a gear arranged on the side of this gear wheel, but not to drive the worm shaft.
  • a gear wheel which is preferably not non-rotatably connected to the shaft but is used, for example, only to guide the chain or toothed belt of a gear arranged on the side of this gear wheel, but not to drive the worm shaft.
  • the power transmission wheels are preferably part of the transmission/transmissions of the drive device. Toothed belt, chain and/or spur gears can be used as gears. These gears can be disguised be, preferably each with an outer, ie second, side wall on each side of the separator blade.
  • the gearboxes are preferably provided with a complete outer covering. Such a cover prevents contamination of the gears during the shoveling process.
  • a pin engages each power transmission wheel from the side not connected to the worm shaft.
  • the power transmission gears can thus form bearings together with the engaging bolts.
  • the ends of the worm shafts not connected to the power transmission gears may form bearings together with bolts engaging those ends of the worm shafts.
  • the power transmission wheels of two adjacent worm shafts are preferably arranged on opposite side cheeks. A dirt-resistant and narrow construction is achieved by means of such internal bearings.
  • the bolts can be connected to the screen shaft, with the bolts preferably being mounted on the outside of the side walls.
  • the power transmission wheels can be connected to the bolts on the outside of the side walls. The bearing is thus arranged behind the power transmission wheel when viewed from the screen shaft.
  • Bearings of this type have the advantage that the dirt has to overcome a large number of dirt barriers, such as a labyrinth seal, a shaft seal, a gear box and a drive chain, before it can penetrate into the bearing and cause damage.
  • dirt barriers such as a labyrinth seal, a shaft seal, a gear box and a drive chain
  • the bearing is located between the screen shaft and the drive. Dirt penetrating through the shaft sealing ring would directly destroy the bearing and cause major damage to the drive.
  • the gears arranged on the two side panels are preferably chain or toothed belt gears.
  • Each transmission preferably comprises only one chain or a timing belt.
  • the chain or toothed belt is preferably driven by a hydraulic motor or connecting shaft and is connected to the power transmission wheels of the screen shafts such that movement of the chain or toothed belt rotates the screen shafts.
  • the chain or toothed belt drives preferably each have a tensioning device in order to keep the chain or the toothed belt tensioned.
  • the tensioning device preferably comprises a hydraulic cylinder, particularly preferably in the form of a synchronous cylinder.
  • a piston rod of the cylinder can be connected to a rotatably mounted gear which can engage in the chain or the toothed belt of the respective transmission and tension it.
  • the chain or toothed belt is preferably tensioned by a spring.
  • the reversing operation can be blocked via the synchronized cylinder.
  • the synchronous cylinder preferably comprises two chambers which are connected to one another via a non-return valve. During clamping, the oil can flow from one chamber into the other.
  • the separator blade preferably includes a connecting shaft for coupling and synchronizing the gears arranged on both side walls.
  • This connecting shaft thus connects these two transmissions to one another.
  • One of the worm shafts is preferably designed as a connecting shaft.
  • a connecting shaft may have a power transmission wheel at both ends of the shaft and transmit the power from the gearbox on one side to the gearbox on the other side. In this way, an exact synchronism of the gears and thus a synchronous rotation of the screen shafts can be achieved.
  • the connecting shaft can be regarded as part of the drive device.
  • the drive device preferably the connecting shaft of the drive device, comprises a coupling for adjusting the rotational position of each second worm shaft relative to the worm shafts lying in between.
  • This clutch is preferably a cam clutch.
  • the worm shafts can be aligned in such a way that the imaginary radial extensions of the helixes of each worm shaft are arranged between the helixes of the adjacent worm shafts.
  • the helix of each worm shaft is thus preferably not directed in the direction of the helixes of the adjacent worm shafts, but towards the hubs of the adjacent worm shafts.
  • the screen openings can be changed by adjusting the rotational positions of the screw shafts in relation to one another.
  • all worm shafts are aligned identically and are therefore in the same rotational position.
  • the coupling of the worm shafts to the drive device can be changed from a first type of coupling to a second type of coupling.
  • the drive device In the first type of coupling, the drive device is designed to rotate the worm shafts in such a way that all worm shafts have the same direction of rotation.
  • the second type of coupling the drive device is designed to rotate the worm shafts in such a way that adjacent worm shafts rotate in opposite directions.
  • Changing from the first type of coupling to the second type of coupling can be achieved, for example, by changing the running of the chain on the gearing of a side wall. It is thus possible to switch from a worm shaft rotation with the same direction of rotation to a worm shaft rotation with different directions of rotation.
  • the present invention also relates to a screening device with a drive device and a screening surface with the features or properties of the screening surface or the drive device defined above in connection with the separator blade.
  • the description of the separator blade according to the invention and the screening device according to the invention are therefore to be understood as complementary to one another, so that information regarding the screening surface and the drive device, which are explained in connection with the separator blade, are also individually or combined as information on the screening surface and the drive device of the screening device are to be understood.
  • the screening device comprises a screening surface and a drive device, the screening surface having a multiplicity of screw shafts which are spaced apart from one another and can be rotated by the drive device.
  • the screening surface of the screening device comprises a large number of screw shafts that are spaced apart from one another and can be rotated by the drive device, which screw shafts can be designed as non-intermeshing screw shafts and/or can have at least one left-handed and at least one right-handed area, preferably with each screw shaft exactly has a left-hand helix and exactly one right-hand helix area between two adjacent bearings of the respective worm shaft, it being possible for the left-hand and right-hand helix areas of each worm shaft to be arranged in such a way that material located on the respective worm shaft is conveyed away from the bearings of the respective worm shaft when the worm shaft rotates , and/or arranged such that each worm shaft is arranged in a different rotational position than the adjacent worm shafts, and/or the mutually may be driven, wherein there may be a connecting shaft for coupling and synchronizing the mutually driven screw shafts, the drive being by means of the drive device, which may have at least one
  • screw flights which are at least partially rounded or provided with a chamfer or are designed in such a way that they have a conical cross-sectional profile
  • the screen shafts of the screening device are arranged in one plane.
  • FIG. 1 shows an exemplary embodiment of a separator blade.
  • FIG. 2 shows a partial illustration of an exemplary embodiment of a screen surface of a separator blade.
  • FIG. 3 shows partial illustrations of an exemplary embodiment of a separator blade.
  • 4 shows an exemplary embodiment of a bearing of a separator blade.
  • FIG. 5 shows an exemplary embodiment of a chain drive of a separator blade.
  • FIG. 6 shows an exemplary embodiment of a worm shaft for a separator blade in a side view (FIG. 6A) and as a cross-sectional drawing (FIG. 6B).
  • FIG. 1 shows an exemplary embodiment of a separator blade 1 with two side walls 2, 3, between which a blade base 4 is arranged, which has a cutting edge 6 at the front.
  • the blade base 4 curves upwards and merges directly into the blade back 5 .
  • the blade bottom 4 Downstream of the cutting edge 6, the blade bottom 4 includes a screen surface 7 that extends into the blade back 5 and includes a large number of worm shafts, such as worm shaft 8, that are spaced apart from one another and can be rotated by a drive device.
  • the blade base 4, with the exception of the cutting edge 6, and the blade back 5 are designed entirely as a screen surface 7.
  • FIG. 2 shows a partial illustration of an exemplary embodiment of a screen surface of a separator blade.
  • the excerpts of the worm shafts 8, 80 shown each have a worm hub 85, 87 with a spirally running worm helix 86, 88. the
  • Worm turning pitch ie the distance parallel to the longitudinal axis of the worm shaft between two adjacent partial coil elements of a coil, is marked with a.
  • FIG. 3A shows a partial representation of an exemplary embodiment of a separator blade comprising a plurality of screw shafts (eg 8, 80) each running between the side walls, the screw shafts each run through an intermediate bearing 10, which is arranged in a web 9 arranged parallel to the side walls.
  • each worm shaft has a left-hand helix and a right-hand helix area, with the areas being arranged in such a way that the material is conveyed away from the bearings along the worm shafts.
  • FIG. 3B shows an enlarged detail from FIG. 3A.
  • Each worm shaft is rotated 180° around the axis of rotation relative to the two adjacent worm shafts. This position of the worm shafts relative to one another does not change during the synchronous rotation of the worm shafts.
  • Figure 3C shows the separator blade of Figure 3B.
  • Half of the worm shafts are driven by a gear on the left and the other half by a gear on the right side wall, with the worm shafts that can be rotated by the left and the right gear alternating.
  • One half of the worm shafts (including worm shaft 8), for example those which are driven via the gearbox arranged on the right side wall, have been rotated by 180° around the axis of rotation (e.g. by adjusting the coupling of the connecting shaft) compared to the separator blade from Fig. 3C ).
  • FIG. 3D shows an enlarged detail from FIG. 3C. In the embodiment shown, all the worm shafts are thus aligned identically and are therefore in the same rotational position.
  • FIG 4 shows an exemplary embodiment of a bearing of a separator blade.
  • the worm shaft 81 is rotatably mounted, the bearing being formed by a bolt 12 which engages in the power transmission wheel 11 connected to the screen shaft 81 .
  • the power transmission wheel 11 is part of a chain drive which is arranged on this side wall (not shown).
  • Fig. 5 shows an exemplary embodiment of a chain transmission
  • the chain gear is on the outside of the side panel 3 arranged and includes the chain 90 and a plurality of power transmission wheels 11, 15, 16, 17, 18, 19, 20, which are non-rotatably connected to the head ends of the worm shafts and the connecting shaft 22.
  • every second worm shaft is non-rotatably connected to a power transmission wheel.
  • the worm shafts which are not non-rotatably connected to a power transmission wheel on this side wall, are driven via another gear on the other side wall.
  • These worm shafts can be non-rotatably connected to the side wall 3 each with a gear 21, which serves to guide the chain.
  • the chain transmission is driven via the connecting shaft 22.
  • a tensioning device 23 which includes a synchronous cylinder 24 , ensures the chain tension.
  • FIG. 6A shows an exemplary embodiment of a worm shaft 91 having four worm flights 93, with an area for forming a bearing or shroud 92 being disposed between each worm flight.
  • Such a casing is arranged between the areas in which a left-hand screw helix meets a right-hand screw helix.
  • FIG. 6B shows the worm shaft of FIG. 6A as a cross-sectional drawing.
  • the shroud 92 is a type of ring with a conical cross-section surrounding the screw hub.
  • the worm flights 93 also have a conical cross-sectional profile.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Gear Transmission (AREA)
  • Combined Means For Separation Of Solids (AREA)

Abstract

L'invention concerne un godet séparateur comprenant deux joues latérales, un fond de godet disposé entre les joues latérales, un dos de godet disposé entre les joues latérales et relié au fond de godet, et un dispositif d'entraînement, le fond de godet et/ou le dos de godet présentant une surface de criblage qui comprend une pluralité d'arbres à vis sans fin espacés les uns des autres et pouvant être mis en rotation par le dispositif d'entraînement.
EP21844187.1A 2020-12-15 2021-12-14 Godet séparateur et cribleur à arbres à vis sans fin Pending EP4263958A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102020133475.3A DE102020133475A1 (de) 2020-12-15 2020-12-15 Schneckenwellen-Separatorschaufel
DE102020133474.5A DE102020133474A1 (de) 2020-12-15 2020-12-15 Separatorschaufel
PCT/DE2021/101005 WO2022127994A1 (fr) 2020-12-15 2021-12-14 Godet séparateur et cribleur à arbres à vis sans fin

Publications (1)

Publication Number Publication Date
EP4263958A1 true EP4263958A1 (fr) 2023-10-25

Family

ID=79686856

Family Applications (2)

Application Number Title Priority Date Filing Date
EP21844186.3A Pending EP4263957A1 (fr) 2020-12-15 2021-12-14 Godet séparateur et cribleur
EP21844187.1A Pending EP4263958A1 (fr) 2020-12-15 2021-12-14 Godet séparateur et cribleur à arbres à vis sans fin

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP21844186.3A Pending EP4263957A1 (fr) 2020-12-15 2021-12-14 Godet séparateur et cribleur

Country Status (2)

Country Link
EP (2) EP4263957A1 (fr)
WO (2) WO2022127994A1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB383903A (en) * 1931-06-19 1932-11-24 Krupp Fried Grusonwerk Ag Improvements in or relating to apparatus for sifting or grading discrete materials
GB2401096B (en) * 2003-04-29 2006-09-06 Patrick Mccormick A screening bucket
FI20055631A0 (fi) * 2005-11-30 2005-11-30 Ideachip Oy Seulontamenetelmä ja seula erityisesti maa-ainesten seulomiseen
US7549544B1 (en) * 2006-11-22 2009-06-23 Albert Ben Currey Agitator and mechanical bucket for use therewith
FI123997B (fi) * 2012-10-01 2014-01-31 Pohmako Ky Kauha ja sen käyttö
DE202014105361U1 (de) * 2014-11-07 2014-11-18 Günther Holding GmbH & Co. KG Siebvorrichtung mit Siebwalzen zur Verhinderung eines Verklemmens von Überkorn
DE202019000703U1 (de) * 2019-02-13 2019-03-07 Doppstadt Familienholding Gmbh Vorrichtung zum Klassieren von Klassiergut

Also Published As

Publication number Publication date
WO2022127994A1 (fr) 2022-06-23
EP4263957A1 (fr) 2023-10-25
WO2022127993A1 (fr) 2022-06-23

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