EP2834016A1 - Zuführeinrichtung für eine siebmaschine - Google Patents
Zuführeinrichtung für eine siebmaschineInfo
- Publication number
- EP2834016A1 EP2834016A1 EP13715181.7A EP13715181A EP2834016A1 EP 2834016 A1 EP2834016 A1 EP 2834016A1 EP 13715181 A EP13715181 A EP 13715181A EP 2834016 A1 EP2834016 A1 EP 2834016A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- channel bottom
- feeding device
- conveyor trough
- discharge edge
- baffle
- 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.)
- Granted
Links
- 238000012216 screening Methods 0.000 title claims abstract description 38
- 239000000463 material Substances 0.000 claims description 24
- 230000010355 oscillation Effects 0.000 claims description 9
- 239000013590 bulk material Substances 0.000 description 7
- 230000005484 gravity Effects 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 5
- 239000000428 dust Substances 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000003534 oscillatory effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- 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
- B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
- B07B13/14—Details or accessories
- B07B13/16—Feed or discharge arrangements
Definitions
- the invention relates to a feeding device for a screening machine.
- the feed device comprises a conveyor trough with a channel bottom, a feed area and a longitudinal discharge edge and a vibration transmitter system coupled to the conveyor trough.
- Sieving machines usually have one or more, optionally stacked and horizontally or obliquely inclined screen decks.
- the screen decks typically have a rectangular base frame which is covered over its entire surface with screen mesh, also known as screen covering. It is thus provided a continuous and gap-free, large area usable screen surface.
- a vibrator e.g. Unbalanced motors vibrated, which increase the efficiency of the screening process and increase the throughput of screenings.
- the abandoned screenings along the longitudinal orientation of the screen surface is moved.
- the screenings are placed as bulk material on one of the transverse sides of the screening machine through a feed slot on the screen or decks, with sieved fine grain is screened in sieve passage and unswept coarse grain on the supply side opposite transverse side of the screening machine in the overflow.
- this has a narrow and long conveyor trough, which is arranged upstream of the screening machine transversely to the feed side of the screening machine.
- the feed chute of the feed device In the area of the feed chute of the screening machine, the feed chute of the feed device has one or more obliquely extending discharge edges.
- the conveyor trough is beyond the side boundary of the screening machine and has in the opposite end of the discharge edge on a task area for the bulk material.
- the conveyor trough is equipped with vibration transmitters, for unbalance motors coupled, so that in the task area applied bulk material is transported in the direction of the discharge edges.
- a disadvantage of this embodiment is an increased space requirement for the screening machine, since the supply device protrudes laterally beyond the boundary edges of the screening machine. Accordingly, screening machines can not be placed directly next to one another, which results in an increased space requirement and thus increased overall costs for the operator of the screening machine. In addition, it is necessary to set the discharge edges manually, partly depending on the feed material. This can only happen during machine downtime and thus requires several iterative steps until the desired result is achieved.
- This object is achieved by a feeder with the features of the independent claim.
- a feeding device for a screening machine of the type mentioned above is characterized in that oscillations of the conveyor channel excited by the vibration sensor system components in the longitudinal direction and in the transverse direction of the channel bottom and in a direction perpendicular to the channel bottom, wherein the components are phase-shifted in the longitudinal and transverse directions to each other ,
- the vibration components are phase-shifted in the longitudinal and transverse direction of the channel bottom of the conveyor trough, performs the conveyor trough in the plane of the trough bottom an elliptical vibration. Together with the vibration component in the vertical direction of the channel bottom tion leads the conveyor trough spatially seen by a vibration in the form of a triachsialen ellipsoid.
- the main axis of the vibrational ellipse in the plane of the gutter bottom determines the conveying direction of the material. In the direction of the minor axis of the oscillation ellipse results in a flow apart of the material transverse to the conveying direction.
- the vibration transmitter system is coupled to the conveyor trough in such a way that a dynamic force generated by the vibration transmitter system acts on it at a distance from a main axis of inertia of the conveyor trough.
- the main axes of inertia of the conveyor trough are those which run along excellent symmetry directions of the trough and go through their center of mass.
- the main axes of inertia extend, for example, in the longitudinal direction and in the transverse direction in the plane of the conveyor trough and in a direction perpendicular thereto, in each case through the center of mass.
- a vibratory encoder system the action of which does not act on the conveyor trough along one of these principal axes of inertia, applies a torque about one of the principal axes of inertia to the conveyor trough.
- a linear vibration force that emits the vibration sensor system then leads to a vibration of the conveyor trough with components in the longitudinal and transverse directions thereof. In the manner mentioned can thus with a
- the vibration sensor system has two unbalance motors. This makes it possible to resort to a known and established way of generating a linear oscillation in order to produce the elliptical oscillation according to the invention in the plane of the channel bottom.
- alternative drives could be, among other things, magnetic drives and exciter.
- the feed area is formed in a corner of the channel bottom remote from the discharge edge.
- the main conveying direction can lead diagonally across the channel bottom. The length of the conveying path is thus maximized given the dimensions of the conveyor trough. With the length of the conveying path increases for the broadening of the material flow available distance. In this way, the best possible homogenization of the discharge stream along the discharge edge can be achieved even with compact dimensions.
- the feeder is the
- a baffle which is spaced from a channel bottom of the conveyor trough, separated from an adjacent region of the conveyor trough, wherein in this adjacent area the discharge edge is arranged. It will compensate for fluctuations in the bulk material feed rate and further improves the homogeneity of the delivery rate along the discharge edge.
- an obliquely or diagonally extending over the channel bottom baffle hen hen provided.
- This guide plate prevents the material flow from spreading into the corner of the channel bottom opposite the discharge edge and the application area. This prevents material from accumulating there.
- the baffle and the baffle together with the discharge edge form a triangle whose longest side forms the discharge edge.
- a support structure running in the longitudinal direction of the channel bottom is connected to the conveyor trough, wherein the vibration transmitter system is fastened to the support structure.
- the vibration sensor system can be positioned as best as possible by displacement along the support structure.
- FIGS. 1 to 3 different perspective views of a feed device
- FIGS. 4 and 5 show various schematic views of the feeding device of FIGS. 1 to 3;
- Fig. 6 is a diagram in which the dependence of a conveying angle is reproduced from the position of a vibration encoder system
- Fig. 7 is a schematic perspective view of a screening machine coupled with feeder.
- FIG. 1 an embodiment of a feeder 1 for a screening machine 2 is shown in each case in a schematic representation.
- Figs. 1 and 2 show the feeder 1 in different perspective views from the front and obliquely above again.
- Fig. 3 shows a perspective rear view obliquely from above. 4 and 5, the feeding device 1 is shown in a schematic front view (FIG. 4) or top view (FIG. 5).
- FIG. 4 a schematic front view
- FIG. 5 top view
- the feeder 1 has a conveyor trough 1 0 with a rectangular channel bottom 1 1. On the transverse sides of the channel bottom 1 1 of side parts 1 2 is limited. On one of the longer sides opposite the transverse sides, the conveyor trough 10 is open. The corresponding longitudinal edge of the channel bottom 1 1 here forms a discharge edge 14 for the feeder. 1 To stabilize the channel bottom 1 1 this can be screwed in the region of the discharge edge 14 as well as on the underside not visible in the figure with reinforcing ribs.
- the directions of the channel bottom 11 in which the longitudinal sides or the transverse sides of the conveyor trough 10 extend are also referred to below as x-direction or y-direction.
- the direction perpendicular to the plane in which the channel bottom 1 1 extending extending direction is referred to as z-direction.
- a located in a corner between one of the side parts 1 2 and the rear wall 1 3 part of the channel bottom 1 1 represents a task area 1 5, in which the material to be screened material is introduced as bulk material during operation of the feeder 1.
- the feeding area 15 is separated by a baffle plate 1 6 extending transversely over and at a distance from the channel bottom 11. In the example shown, this runs
- the baffle plate 16 is preferably connected to the side part 12 and the rear wall 1 3 via angle straps so that the gap height d can be adjusted continuously or in predetermined steps.
- the adjustability of the gap height d of the baffle plate is shown in FIG. 4 by the arrow symbolized by the reference numeral 23. Also, an automatic adjustment of the gap height d, for example, depending on the task amount, can be provided.
- baffle 1 7 also across the channel bottom 1 1 to the rear wall 1 3.
- the baffle 1 7 adjacent to the baffle 1 6 is attached.
- the baffle 1 7 sits as close as possible to the channel bottom 1 1 and, as is visible for example in Fig. 3, preferably with the channel bottom 1 1 connected.
- the conveyor trough 10 is preferably made of steel sheets and / or profiles which are screwed, riveted together or are welded.
- the feeder 1 is mounted to vibrate on a frame, not shown here.
- vibration bearings 18, for example rubber / metal buffers in the region of the corners of the feed device 1, there are provided vibration bearings 18, for example rubber / metal buffers.
- Below the gutter bottom 1 1 1 1 Traverse 1 9 is arranged between the side parts 1, to which a vibration sensor system 20 is mounted.
- the traverse runs along the longitudinal direction of the feeder (X-direction).
- the vibration sensor system 20 is realized by two adjacent unbalance motors 21.
- the two unbalance motors 21 are operated synchronously in opposite directions, so that a perpendicular to the longitudinal extent of the traverse 1 9 aligned dynamic force, hereinafter also referred to as vibration force, is exerted on the traverse 1 9.
- the unbalance motors 21 can be synchronized, for example, by a mechanical coupling or by a self-synchronization.
- the unbalanced motors 21 oscillatory movements with frequencies in the range of about 60 Hertz and vibration amplitudes in the range of a few millimeters when accelerations of several gravitational accelerations g reached.
- the mentioned parameters of the vibration parameters are to be understood as illustrative and not restrictive for the invention.
- the plane in which the dynamic force of the vibration sensor system 20 acts is indicated in FIG. 4 by the reference numeral 22. It runs parallel to the yz plane and runs centrally between the unbalance motors 21. Furthermore, in FIG. 4, the center of gravity S of the feeder 1 is indicated. With respect to the longitudinal direction (x-direction), this is substantially in the center, with possible smaller deviations due to the mass of the vibration transmitter system 20 not being taken into account in this schematic illustration.
- the vibration sensor system 20 is arranged on the cross member 1 9 in such a way that a nonzero distance xs results between the plane of the force 22 and a main axis of inertia passing through the center of gravity.
- the vibrator system 20 is arranged so that the dynamic force emanating from it does not act on the center of gravity S, but spaced apart by the distance xs.
- the transport direction t is described below by a conveying angle, which it occupies in the xy plane, that is to say in the plane of the channel bottom 11, with respect to the x-axis, that is to say the longitudinal direction of the conveying trough 10.
- the vibration components in the x and y direction are more or less out of phase with each other depending on the positions of the unbalance motors 21, so that an elliptical oscillation in the xy plane, as the plane of the channel bottom 1 1 sets. Together with the oscillation in the z direction, the oscillation pattern of a triachsial ellipsoid is obtained.
- the discontinued in the task area 15 material is distributed during operation of the feeder 1 initially in the task area 15 and is promoted by this under the baffle 16 ago in the transport direction t. Due to the gap, which is parallel over its length, below the baffle 16 of the height d, a material layer on the conveyor trough behind the baffle 16 forms a uniform layer thickness d. This layer is transported by the combined oscillatory movement in the longitudinal and transverse direction in the conveying direction t over the channel bottom 1 1. Any inhomogeneities in the material layer thickness are compensated along the conveying path by the lateral transport component. This lateral material compensation is achieved by the elliptical movement of the channel bottom 1 1 in its xy plane.
- the main axis of the ellipse defines the conveying direction t
- the minor axis determines the flow apart of the material transversely to the conveying direction t.
- the baffle 17 prevents the layer from widening into the rear region of the conveyor trough 10 which is opposite the feed area 15 (in the upper right area in FIG. 5).
- a layer thickness which is inhomogeneous when leaving the application region 15 can result, for example, from an uncontrolled overflow of material from the application region 15 if significantly more material is brought into the application region 15 than is dropped by the delivery device 1.
- the layer thickness in the feed area 15 may drop below the gap distance d in some areas, which may also result in layer thickness inhomogeneities.
- an operation guide has proven to be advantageous for the most homogeneous layer thickness, in which the material supply is set in the task area 15 so that constantly adjusts a small overflow, for example, a few percent of transported material.
- FIG. 6 shows, in the form of a diagram, the dependence of the conveying angle on the distance xs between the force vector and the center of gravity S.
- the distance xs is given in arbitrary units.
- the points shown are measured values, the line drawn through the measuring points is a dividing line.
- FIG. 7 shows an arrangement of a feed device 1 on a screening machine 2.
- the longitudinal extent of the feed device 1 is approximately half the width of the screening machine 2.
- two juxtaposed feeders 1 are provided, of which in Fig. 7 for reasons of clarity, only one is shown.
- the feed device 1 is arranged so that the discharge edge 14 is positioned above a feed chute 3 of the screening machine 2. It can be seen in FIG. 7 that the feeding device 1 according to the application is designed to be so compact that, in particular, it does not protrude beyond the lateral boundary of the screening machine 2. Apart from necessary distances for assembly and maintenance purposes, thus several screening machines 2 can be arranged directly next to each other. Compared with the previous figures, the feed device 1 of this figure is supplemented by a dust hood 24, into which a feed pipe socket 25 is inserted, through which the screenings are brought into the feed area 15 of the conveyor chute 10 during operation.
Landscapes
- Jigging Conveyors (AREA)
- Feeding Of Articles To Conveyors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012103019A DE102012103019A1 (de) | 2012-04-05 | 2012-04-05 | Zuführeinrichtung für eine Siebmaschine |
PCT/EP2013/056948 WO2013150033A1 (de) | 2012-04-05 | 2013-04-02 | Zuführeinrichtung für eine siebmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2834016A1 true EP2834016A1 (de) | 2015-02-11 |
EP2834016B1 EP2834016B1 (de) | 2018-02-21 |
Family
ID=48083141
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13715181.7A Active EP2834016B1 (de) | 2012-04-05 | 2013-04-02 | Zuführeinrichtung für eine siebmaschine |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2834016B1 (de) |
DE (1) | DE102012103019A1 (de) |
WO (1) | WO2013150033A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113266432B (zh) * | 2021-04-07 | 2022-08-23 | 邯郸新兴发电有限责任公司 | 在线排污水封装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1830621U (de) * | 1959-04-29 | 1961-05-04 | Haver & Boecker | Schwingboden mit magnetischer erregung. |
DE7108278U (de) * | 1971-03-05 | 1971-05-27 | Rhewum Rheinische Werkzeug Und Maschinenfabrik Gmbh | Verteilvorrichtung fur Schuttguter |
DE2745432C2 (de) * | 1977-10-08 | 1984-04-05 | Rhewum Rheinische Werkzeug- Und Maschinenfabrik Gmbh, 5630 Remscheid | Schwingaufgeber, insbesondere zum gleichmäßigen Beschicken von Siebmaschinen |
DE3733619A1 (de) * | 1987-10-05 | 1989-04-13 | Deere & Co | Verfahren zum gleichmaessigen verteilen eines zu trennenden guts in einer trenneinrichtung und mittel zu seiner ausfuehrung |
DE4417162C1 (de) * | 1994-05-17 | 1995-08-17 | Uhde Gmbh | Vorrichtung zur Einstellung des Schwingverhaltens einer Schwingförderrinne |
DE19613534A1 (de) * | 1996-04-03 | 1997-10-09 | Schenck Process Gmbh | Übergabevorrichtung an Schwingförderern |
DE202007006539U1 (de) * | 2007-05-04 | 2007-09-13 | Jöst GmbH + Co. KG | Schwingförderrinne |
IES20080241A2 (en) * | 2008-03-31 | 2009-09-30 | Lagan Technology Ltd | A method of operating an asphalt plant |
-
2012
- 2012-04-05 DE DE102012103019A patent/DE102012103019A1/de not_active Withdrawn
-
2013
- 2013-04-02 WO PCT/EP2013/056948 patent/WO2013150033A1/de active Application Filing
- 2013-04-02 EP EP13715181.7A patent/EP2834016B1/de active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2013150033A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2834016B1 (de) | 2018-02-21 |
DE102012103019A1 (de) | 2013-10-10 |
WO2013150033A1 (de) | 2013-10-10 |
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