EP3305422A1 - Dispositif et procédé destinés à influencer un mouvement d'un matériau de tamisage dans au moins un segment du tambour de tamisage d'un tamiseur à tambour et leur utilisation - Google Patents

Dispositif et procédé destinés à influencer un mouvement d'un matériau de tamisage dans au moins un segment du tambour de tamisage d'un tamiseur à tambour et leur utilisation Download PDF

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Publication number
EP3305422A1
EP3305422A1 EP17189959.4A EP17189959A EP3305422A1 EP 3305422 A1 EP3305422 A1 EP 3305422A1 EP 17189959 A EP17189959 A EP 17189959A EP 3305422 A1 EP3305422 A1 EP 3305422A1
Authority
EP
European Patent Office
Prior art keywords
lifting
drum segment
screen drum
rotation
segment
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.)
Withdrawn
Application number
EP17189959.4A
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German (de)
English (en)
Inventor
Holger Lieberwirth
Thomas Krampitz
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.)
Technische Universitaet Bergakademie Freiberg
Original Assignee
Technische Universitaet Bergakademie Freiberg
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
Application filed by Technische Universitaet Bergakademie Freiberg filed Critical Technische Universitaet Bergakademie Freiberg
Publication of EP3305422A1 publication Critical patent/EP3305422A1/fr
Withdrawn legal-status Critical Current

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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
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/18—Drum screens
    • B07B1/22—Revolving drums
    • B07B1/24—Revolving drums with fixed or moving interior agitators

Definitions

  • the invention relates to an apparatus and a method for influencing the movement of a screenings material in at least one screen drum segment of a drum screen, and a use.
  • the relative drum speeds are in the classification of municipal waste in the range of 0.45 to 0.6 times the critical drum speed and are technologically limited upwards.
  • an uncontrolled and undefined Siebgutieri arises, which is characterized by a superposition of several states of sliding, rolling and throwing movements.
  • only a relatively small active separation surface results from the rolling movement.
  • the process control for municipal waste should be designed in such a way that the transport of fines to the separating surface can be achieved without obstruction by ball or covering of the separating surface by flat pieces.
  • a drum sifter for classifying wet raw gravel in which the sieve drum is divided into different sections of different sieve opening widths.
  • the screenings are circulated by means of lifting blades in the form of U-profile sections.
  • the classification of lumpy municipal waste in Trommelsiebmaschinen is known, are arranged in the inside of a screen drum on a plurality of spars along the entire screen drum conveyor blades.
  • the conveyor blades should be larger than the size of individual pieces of paper or foil in the screenings.
  • lifting strips which are arranged in a screening drum, are described. Moldings for use in the classification of household waste, which loosen and mix the screenings, are formed on these lifting strips.
  • hitherto used for incorporation of the screen drum are often too small dimensions, so that in the axial direction, either the angular distance between the lifting strips is too large and so the screenings along the Parting surface slides, or the dimensioning in the radial direction is too small, so that during the passage of screenings takes place an overlap of the internals with screenings, resulting in a rolling Siebgutiolo results.
  • the object is achieved with a device having the features of claim 1, and a method according to claim 9.
  • a use of the device and the method relates to the claim 10.
  • Advantageous embodiments and further developments are described in the subordinate claims.
  • a device according to the invention for influencing the movement of a screened material in at least one screen drum segment of a drum screening machine has a plurality of lifting strips aligned in the axial direction on the inside of the screen drum segment, which are arranged at equal angular distances from one another.
  • a screen drum of a drum screening machine is usually formed with a plurality of drum screen segments. For example, the individual segments each have a length in the range of 1 m.
  • the lifting strips can each be formed from a metal sheet. Through the use of lifting strips, the screenings are forcibly conveyed during the rotary movement of the screen drum segment in the ascent movement up to a discharge point and thrown off there.
  • Each lift bar has a first portion and a second portion, wherein the second portion is formed inclined with respect to the first portion at an angle corresponding to the direction of rotation of the screen drum segment.
  • the total radial dimension h ges a lever bar in the direction of the axis of rotation of the respective screen drum segment corresponds to the sum of the radial portion h 1, radially of the height h 1 of the first section and the radial portion h 2, radially of the height h 2 of the second section, where h 1, radially > 0 to 0.99 h ges , preferably between 0.2 h ges and 0.8 h ges , and h 2, radially > 0 to 0.99 h ges , preferably between 0.2 h ges and 0.8 h ges are.
  • each lifting ledge has a concavely curved shape along a circular path, an ellipse or a spiral in the direction of rotation of the respective sieve drum segment and is designed to be inclined in accordance with the direction of rotation of the sieve drum segment.
  • the oriented in the direction of the axis of rotation front edge of the lifting bar extends beyond a plane in the axial direction of the respective screen drum segment, which is spanned between the base of the lifting bar and the axis of rotation, not.
  • the overall radial dimension h ges of the lifting bar in the direction of the axis of rotation of the respective sieve drum segment corresponds to the distance between a plane parallel to a plane extending through the base of the lifting strip tangent of the respective sieve drum segment, which contacts a front edge of the lifting strip, the base of the lifting strip.
  • the front edge of the lifting bar is the edge of a lifting bar facing the axis of rotation of the respective screening drum segment.
  • the radial overall dimension h ges of the lifting strip also corresponds to at least one height h s of a Siebgut für.
  • the filling of the respective screen drum segment is assumed to be a circular segment of the screen drum segment cross section.
  • the total radial dimension h ges of the lifting bar may be alone or additionally at least 0.12 times the inner diameter of the drum drum segment or the largest dimension of Siebgut Publishedes contained in the screenings having maximum dimension.
  • the length of the lifting bar in axial alignment in a screen drum segment should correspond at maximum to the length of the respective screening drum segment in order not to project into an adjacent / the adjacent screen drum segment (s), where too long length of the lifting ledges in / in the adjacent Screen drum segment (s) Disturbances in the upward movement of the screenings during the rotary motion of the screen drum segment may occur.
  • the length of the strips is too long, the strips protruding into the adjacent screen drum segment (s) may cover part of the area of impact and thus the parting surface in the adjacent screen drum segment (s).
  • the length of the lifting bar should also not be much smaller than the entire length of the respective screening drum segment in the longitudinal direction, since it should be ensured that the screenings are conveyed over the entire length of the screening drum segment about an axis of rotation of the respective screening drum segment.
  • exactly three levers are arranged in the axial direction with an angular distance of 120 ° in the screen drum segment in a screen drum segment.
  • the impact and discharge areas are optimally distributed in the screen drum segment, d. H.
  • the distribution of the lifting strips is chosen so that during the period of ejection and impact of the screenings on the separation surface of the screening drum segment no lifting bar passes through the impact area.
  • the first section of the lifting bar may be arranged along a radius in the direction of the axis of rotation of the respective screening drum segment.
  • the second section of the lifting bar should be inclined in the direction of rotation of the screening drum at an angle ⁇ 2 in the range> 0 ° to 45 ° with respect to the first section.
  • This arrangement of the first and the second section in conjunction with the geometry of the first and second sections, creates a defined discharge area for the screenings from the lifting strip, from which the screenings are discarded individually.
  • the screened material hits the impact area opposite the ejecting lever bar. In this way, a material-specific sliding on the lifting bar in response to the angular position of the lifting bar can be achieved during the rotation of the drum and thus a clear determination of a substance-specific discharge area for the screenings are taken.
  • the inclination of the second section of the lifting bar relative to the first Section can be achieved by bending the second section and / or by curving the second section along a circular path, an ellipse or a spiral.
  • the lifting bar can therefore also have a combined curved shape.
  • the resulting cross-sectional shape of the lifting bar can influence the sliding of the Siebguts and the discharge time during the rotation of the Siebtrommelsegments.
  • the lifting ledge may be secured to the inside of the screen drum segment by welding, gluing or positive locking means.
  • the selection of the type of fastening of the lifting strips depends on the material to be screened, the size of individual screenings and the expected mechanical loading of the screen drum segment by the screenings and the relative drum speed to be used.
  • the screen drum segment (s) of a drum screen machine may be inclined in the conveying direction at an angle in the range of 0 ° to 30 °. Due to the inclination of the screen drum segment (s) in the conveying direction and the rotational movement of the screen drum segment (s), the screenings are conveyed through the screen drum.
  • the screenings are moved during the rotation of the screen drum segment in the drum screen by means of the lifting strips around a rotation axis of the screen drum segment and the components of the screenings are individually dropped from the lifting strips so that they individually in a defined area lying in the screen drum segment of the respective ejecting lever bar, impinge.
  • the screenings are loosened and exposed in the screenings contained fines.
  • the apparatus and method described may find use in the classification of municipal waste, in particular in the classification of lightweight packaging, mixed municipal waste and sorting residues.
  • the active usable separation surface in a screen drum segment are defined and maximized.
  • the optimal dimensioning of the geometric dimensions of the lifting strips and their angular spacing reduces the sliding movement of the screenings on the separating surface.
  • a sequential discharge ie a separation of the material to be screened from the inner edge of the lifting bar and a loosening of the screenings can be achieved by the geometry of the lifting strips.
  • the exposure of fines can be achieved because, for example, plastic foils can be released from the lifting strip during the flight phase fines with isolated ejection.
  • the respective impact area of the screenings is cleared of the ejecting lever bar in the direction of rotation of the screen drum segment subsequent lifting bar, so that the discarded screenings impinges on a free area of the separating surface.
  • a hindrance of the classification can be avoided by lying on the parting screenings.
  • the geometry of the lifting ledges and their spacing depending on their number, no obstruction due to disturbing installations in the area of the active parting surface takes place.
  • FIG. 1 is a cross section of a screening drum segment 1 with an exemplary embodiment of the device according to the invention with three lifting strips H shown.
  • the lifting strips H are arranged in the axial direction and at a constant angular distance of 120 ° and fastened by means of screws on the inside of the screen drum segment 1.
  • the lifting strips H each have a first section H1 and a second section H2.
  • FIG. 2 is a side view of the exemplary embodiment of a screen drum segment 1 from FIG. 1 shown.
  • the length of the screen drum segment 1 with l sec is denoted by L and the hole width of the screen drum segment 1 with w.
  • the attachment region of a lifting strip H can be seen in a plan view.
  • the length l sec of the screen drum segment 1 and the length L of the lifting bar H are the same size.
  • FIG. 3 is the area marked "A" off FIG. 1 shown as a detail.
  • the first portion H1 of the lifting ledge H is arranged and aligned at a radius in the direction of the rotational axis 2 of the screening drum segment 1.
  • the radial component h 1, radial of the height h 1 of the first section H1 in this case correspond to each other.
  • the inclination can be selected lower depending on the screenings to be screened and the relative drum speed.
  • the inclination of the second section H2 of the lifting strip H with respect to the first section H1 was achieved by bending the sheet from which the lifting strip H is formed.
  • the total radial dimension h ges of the lifting bar H in the direction of the axis of rotation 2 of the respective screen drum segment 1 results from the sum of the radial portion h 1, radially the height h 1 of the first portion H1, which corresponds to the height h 1 in this example, and the radial portion h 2 , radially the height h 2 of the second Section H2.
  • the total radial dimension h ges of the lifting strip H has at least the height h s , which corresponds to the height of a Siebgut für in the screen drum segment 1.
  • the total radial dimension h ges lifting strip H is also at least 0.12 times the inner diameter of the drum drum segment 1.
  • the total radial dimension h ges the lifting bar H but also the largest dimension of Siebgut Publishedes contained in the screenings, in the case of use for the classification of municipal waste of a piece of waste of maximum dimension.
  • municipal waste is preferably classified.
  • the screenings in this example municipal waste, during the rotation of the screen drum segment 1 by means of the lifting strips H forcibly conveyed about the rotation axis 2 of the screen drum segment 1.
  • the individual components of the municipal waste are dropped individually from the respective lifting strip H.
  • the discarded municipal waste meet in a region of the screen drum segment 1, which is opposite to the ejecting lever strip H.
  • the screenings are loosened and fines are released.
  • foils and containers contained in the municipal waste are opened, thereby also releasing the fines contained therein.
  • the lifting strips H are arranged so that the discarded screenings always impinges on a free area of the screen drum segment 1.
  • the lifting strips H following in the direction of rotation cancel out the region of the screening drum segment 1 which lies opposite the ejecting lifting strip H, and on the other hand the division of the lifting strips is selected such that during the period of ejection and impingement of the screenings onto the separating surface of the screening drum segment 1 no lifting bar H passes through the impact area.
  • FIG. 4 shows a further exemplary cross section of a screen drum segment 1 of the device according to the invention with three strips H.
  • the three arranged at equal angular intervals H strips H a concave curved shape along an ellipse and are inclined according to the rotational direction ⁇ of the screen drum segment 1.
  • the overall radial dimension h ges the lifters H corresponds to the distance a parallel P to a plane passing through the base point 4 of the lifting strip H tangent T of the screen drum segment 1, the lifting strip touches H the end edge 3, the base point 4 of the lifting strip H.

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  • Combined Means For Separation Of Solids (AREA)
EP17189959.4A 2016-09-27 2017-09-07 Dispositif et procédé destinés à influencer un mouvement d'un matériau de tamisage dans au moins un segment du tambour de tamisage d'un tamiseur à tambour et leur utilisation Withdrawn EP3305422A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016218554.3A DE102016218554B3 (de) 2016-09-27 2016-09-27 Vorrichtung und Verfahren zur Bewegungsbeeinflussung eines Siebguts in mindestens einem Siebtrommelsegment einer Trommelsiebmaschine und deren Verwendung

Publications (1)

Publication Number Publication Date
EP3305422A1 true EP3305422A1 (fr) 2018-04-11

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EP17189959.4A Withdrawn EP3305422A1 (fr) 2016-09-27 2017-09-07 Dispositif et procédé destinés à influencer un mouvement d'un matériau de tamisage dans au moins un segment du tambour de tamisage d'un tamiseur à tambour et leur utilisation

Country Status (2)

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EP (1) EP3305422A1 (fr)
DE (1) DE102016218554B3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112934661A (zh) * 2021-04-13 2021-06-11 攀钢集团矿业有限公司 一种筒式隔渣机
CN114653575A (zh) * 2022-03-30 2022-06-24 方城县宛北水泥有限责任公司 一种防堵型回转筛分装置
CN115463831A (zh) * 2022-08-24 2022-12-13 农业农村部南京农业机械化研究所 一种具有清筛防堵功能的坚果圆筒筛选机构

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018006507B4 (de) 2018-08-17 2020-04-30 Lars Fabricius Trommelsiebmaschine

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE31307C (de) * E. KREISS in Hamburg Freibeweglich angebrachte Flügel im Sichtcylinder von Sichtmaschinen
GB1160656A (en) * 1967-01-05 1969-08-06 Jacques Adrien Thirouard Mixing Apparatus for Powdered Materials
US3991225A (en) * 1974-02-01 1976-11-09 Tennessee Valley Authority Method for applying coatings to solid particles
EP0382326A1 (fr) * 1989-02-08 1990-08-16 Georg Traube Dispositif de traitement des ferrailles
EP0798055A2 (fr) * 1996-03-29 1997-10-01 Satake Corporation Appareil de séparation pour céréales
DE29722116U1 (de) * 1997-12-17 1998-03-19 H. Burgstaller GmbH, Haag Siebtrommel für Trommelsiebmaschine
US6193410B1 (en) * 1998-12-16 2001-02-27 Puckett, Ii Robert A. Method for agitating the liquid contents of paint balls
WO2007042926A1 (fr) * 2005-10-13 2007-04-19 Wst International (Holdings) Limited Appareil pour l'elimination de sac d'ordures
US20150135785A1 (en) * 2012-05-07 2015-05-21 Xi'an Jiaotong University Method for sorting and comprehensively utilizing municipal solid waste

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE484172C (de) * 1926-06-06 1929-10-11 Flammger Sortiertrommel mit im Innern angebrachten Hubschaufeln

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE31307C (de) * E. KREISS in Hamburg Freibeweglich angebrachte Flügel im Sichtcylinder von Sichtmaschinen
GB1160656A (en) * 1967-01-05 1969-08-06 Jacques Adrien Thirouard Mixing Apparatus for Powdered Materials
US3991225A (en) * 1974-02-01 1976-11-09 Tennessee Valley Authority Method for applying coatings to solid particles
EP0382326A1 (fr) * 1989-02-08 1990-08-16 Georg Traube Dispositif de traitement des ferrailles
EP0798055A2 (fr) * 1996-03-29 1997-10-01 Satake Corporation Appareil de séparation pour céréales
DE29722116U1 (de) * 1997-12-17 1998-03-19 H. Burgstaller GmbH, Haag Siebtrommel für Trommelsiebmaschine
US6193410B1 (en) * 1998-12-16 2001-02-27 Puckett, Ii Robert A. Method for agitating the liquid contents of paint balls
WO2007042926A1 (fr) * 2005-10-13 2007-04-19 Wst International (Holdings) Limited Appareil pour l'elimination de sac d'ordures
US20150135785A1 (en) * 2012-05-07 2015-05-21 Xi'an Jiaotong University Method for sorting and comprehensively utilizing municipal solid waste

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112934661A (zh) * 2021-04-13 2021-06-11 攀钢集团矿业有限公司 一种筒式隔渣机
CN114653575A (zh) * 2022-03-30 2022-06-24 方城县宛北水泥有限责任公司 一种防堵型回转筛分装置
CN114653575B (zh) * 2022-03-30 2023-08-29 方城县宛北水泥(集团)有限责任公司 一种防堵型回转筛分装置
CN115463831A (zh) * 2022-08-24 2022-12-13 农业农村部南京农业机械化研究所 一种具有清筛防堵功能的坚果圆筒筛选机构

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