EP0794291A1 - Dispositif de transport par aspiration nottament une drague suceuse - Google Patents

Dispositif de transport par aspiration nottament une drague suceuse Download PDF

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Publication number
EP0794291A1
EP0794291A1 EP97103724A EP97103724A EP0794291A1 EP 0794291 A1 EP0794291 A1 EP 0794291A1 EP 97103724 A EP97103724 A EP 97103724A EP 97103724 A EP97103724 A EP 97103724A EP 0794291 A1 EP0794291 A1 EP 0794291A1
Authority
EP
European Patent Office
Prior art keywords
suction
suction conveyor
conveyor according
grate bars
conveying air
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
Application number
EP97103724A
Other languages
German (de)
English (en)
Other versions
EP0794291B1 (fr
Inventor
Karl Rinker
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.)
WENGERT AG WIRTSCHAFTSPRUEFUNGSGESELLSCHAFT STEUER
Original Assignee
Vmb Vesta Maschinenbau & Co KG GmbH
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 Vmb Vesta Maschinenbau & Co KG GmbH filed Critical Vmb Vesta Maschinenbau & Co KG GmbH
Publication of EP0794291A1 publication Critical patent/EP0794291A1/fr
Application granted granted Critical
Publication of EP0794291B1 publication Critical patent/EP0794291B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
    • B07B7/06—Selective separation of solid materials carried by, or dispersed in, gas currents by impingement against sieves
    • 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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
    • E02F3/94—Apparatus for separating stones from the dredged material, i.e. separating or treating dredged material

Definitions

  • the invention relates to a suction conveyor device, in particular a suction excavator, with a suction pipe which opens into a collecting container in which coarse portions of the suction material can be separated from the conveying air by means of a sieve device and accumulate in a collecting chamber.
  • Suction conveyor devices in particular so-called suction dredgers, have been used for the targeted picking up of suction material for some time, in which vacuum is generated with the aid of a blower and the suction material can be sucked into a collecting container via a suction pipe or a suction nozzle, which are preferably provided with a suction mouthpiece.
  • a suction pipe or a suction nozzle which are preferably provided with a suction mouthpiece.
  • suction pipe or a suction nozzle which are preferably provided with a suction mouthpiece.
  • the suction material is separated from the conveying air flow in the collecting container before the conveying air is blown out on the outlet side of the blower.
  • Sieves, filters and / or deflection devices for example baffle plates, are usually used to separate the suction material.
  • the invention has for its object to provide a suction conveyor of the type mentioned, in which the coarse fractions can be reliably separated from the fine fractions of the suction material over a long period of operation and the foreign substances adhering to the surface of the coarse fractions can be solved.
  • a suction device of the type mentioned is formed by an impact screen, which has a plurality of grate bars that are movable relative to each other, and that the suction material can be applied to the impact screen with the conveying air at high speed .
  • a very high speed conveying air flow which can be up to 200 km / h, is used. This ensures that the fines on the conveyor line differ from that at the lower end of the suction pipe arranged suction mouthpiece up to the end of the suction pipe opening into the collecting container by mutual contact and by contact with the suction pipe wall already loosen to a large extent from the coarse parts of the suction material, ie the ballast. If the coarse particles hit the impact sieve at high speed, the possibly sticky fine particles adhering to the ballast also loosen due to the effect of inertia and are sucked through the grate bars of the impact sieve with the already loosened fine particles.
  • the coarse particles, ie the ballast, are retained by the grate bars of the impact sieve and fall down into the collecting chamber due to gravity. It has been shown that this separation of coarse and fine parts can result in cleaning of the coarse parts under the effect of inertia, which makes it possible, for example in the case of ballast of a track system, to reinstall the ballast directly from the suction conveyor device into the track bed without one further cleaning of the ballast is necessary.
  • the invention provides that the grate bars are movable relative to one another.
  • the mutual movement of the grate bars has the result that their relative position preferably changes continuously during operation, so that the coarse fractions do not get stuck between the grate bars for a long time, thereby preventing the grate bars or the baffle screen from becoming blocked.
  • the grate bars can either be translationally displaced relative to one another or pivoted relative to one another. It is preferably provided that at least some the grate bars can be moved substantially perpendicular to their longitudinal extent during the suction process. In a further development of the invention it is provided that the grate bars can be moved back and forth in the flow direction of the conveying air. Alternatively or additionally, the grate bars can also be moved in the direction of their longitudinal extent.
  • the impact screen is exchangeably mounted in the collecting container. Impact sieves with different distances between the grate bars can thus be used to pick up and fractionate suction material of different compositions.
  • the impact screen can be replaced from above after opening a lid or by pushing it sideways into an insertion window.
  • At least one of the grate bars or all grate bars are each formed by a rotating, driven endless element, for example a link chain.
  • a link chain For the alignment of the link chain it has proven to be advantageous if it runs in a plane extending in the flow direction of the conveying air.
  • all strong grate bars can be replaced by correspondingly arranged link chains.
  • the link chains which are deflected and driven by means of conventional chain wheels, are preferably kept in a continuous orbital motion. Due to the movement of the link chains, adhering plants are transported away from the direct inflow area of the conveying air, so that the conveying air can constantly flow through the impact screen to a sufficient extent.
  • the link chain in a further development of the invention can have a stripping device, in particular in the form of a comb or rake, the teeth of which lie between the individual endless elements or link chains and detach the plants adhering there so that they enter the collecting container underneath fall.
  • the stripping device should be arranged downstream of the endless element or the link chain.
  • the distance between the end of the suction pipe opening into the collecting container and the impact screen can be changed.
  • the suction pipe is preferably axially adjustable, in particular mounted on the collecting container.
  • the suction pipe can be pivotally mounted on the collecting container.
  • the end of the suction pipe located in the collecting container, at which the conveying air flow exits with the suction material can be pivoted through a few angular degrees during suction in order to be able to cover the width of the grate of the impact screen as completely as possible. This prevents the build-up of sticky suction material on the grate of the impact sieve and ensures that the grate bars are evenly loaded and worn.
  • the grate bars of the impact screen can have different cross-sectional shapes.
  • the inclination of the baffle sieve which extends over part of the width or preferably over the entire width of the collecting container, can be changed relative to the direction of flow of the conveying air, in order in this way to be able to adapt the impact angle of the suction material to its type and strength.
  • the grate bars of the baffle screen do not have to lie in one plane, but rather it can also be provided that the baffle screen is convex or concave in the direction of the suction tube.
  • the impact screen keeps the ballast in the collecting chamber, while the fine particles, ie sand, dust and oil and fat, pass through the impact screen.
  • the impact screen is preferably a second Collection chamber for fine particles downstream, in which the fine particles are separated from the conveying air by baffle plates and / or sieves, provided that they do not fail due to the increase in volume and the resulting lower flow velocity due to gravity from the air flow.
  • a suction conveyor device 10 has a suction pipe 11, one end 11a of which opens into a collecting container 13 which is essentially completely closed.
  • the collecting container 13 is through a partition 14 and a baffle 20 arranged above this into a first collecting chamber 15 and a second Collection chamber 16 divided.
  • the second collecting chamber 16 has an outlet 12 for the conveying air, which is surrounded at a distance by a separator apron 17 and is covered by a sieve 18.
  • a fine filter chamber can be connected downstream of the output 12.
  • FIGS. 1 and 2 show and it is indicated by the double arrow A in FIG. 1, the suction pipe 11 is mounted on the collecting container 13 in an axially adjustable manner, as a result of which the distance between the end 11a of the suction pipe 11 opening into the collecting container 13 and the impact sieve 20 is changed can.
  • Figure 2 also shows that the suction tube 11 is pivotally mounted on the collecting container 13 (double arrow S), so that the entire width of the impact screen 20 can be applied during operation.
  • the baffle screen 20 consists of a plurality of vertical grate bars 21 arranged essentially in parallel, the mutual position of which can be changed by a hydraulic drive during suction operation.
  • the inclination of the impact screen 20 can be changed relative to the flow direction of the conveying air, as shown in dashed lines in Figures 1 and 2.
  • the baffle screen 20 can also be convex or concave in the direction of the suction pipe 11.
  • a flow of conveying air is generated from the mouthpiece of the suction tube, not shown, through the suction tube 11 and the collecting container 13.
  • suction material can be sucked in through the suction pipe 11 at high speed.
  • the suction material impacts the impingement screen 20 at this high speed, as a result of which the coarse components, for example ballast, of possibly adhering contaminants as a result of inertia getting cleaned.
  • the coarse fractions fall from the impact screen 20 as a result of gravity and collect in the first collecting chamber 15.
  • the grate bars 21 of the impact screen 20 can be moved relative to one another. As FIG.
  • the grate bars 21 are in their starting position essentially in a vertical orientation next to one another and perpendicular to the flow direction L of the conveying air flow. As shown in FIGS. 3b and 3c, the grate bars 21 are moved back and forth in the flow direction L of the conveying air, first every second grate bar being moved in the direction downstream of the conveying air, while the grate bars located in between are moved in the opposite direction, ie upstream of the conveying air flow. When a respective end position is reached, the direction of movement of each grate bar is reversed, so that each grate bar executes an oscillating movement about the starting position shown in FIG. 3a.
  • FIG. 4 shows an alternative possibility of moving the grate bars, with every second grate bar oscillating between a starting position, in which all grate bars 21 are arranged essentially next to one another, and a downstream end position, while the grate bars in between oscillate between the starting position and an upstream end position.
  • the grate bars 21 have an essentially rectangular cross section, the narrow end faces of which face the conveying air flow, so that the grate bars have a large moment of resistance to the impinging coarse parts, ie the Own ballast and can easily absorb and dissipate the resulting forces.
  • the fine particles passing through the impact screen 21 meet the separator apron 17 and fall from the latter to the bottom of the second collecting chamber 16, where they collect.
  • the conveying air flow flows around the separator apron 17 and emerges from the collecting container 13 at the outlet 12, particles possibly remaining in the conveying air flow being prevented from escaping from the collecting container 13 by the sieve 18.
  • the second collecting chamber 16 is larger in volume than the collecting chamber 15. This results in a reduction in the flow rate of the conveying air, which favors the separation of the fine particles carried in the conveying air flow.
  • the outlet 12 leads to a further increase in volume to a fine filter chamber, not shown.
  • the coarse particles accumulating in the first collecting chamber 15 can be reused directly due to the cleaning action occurring on the impact screen 20, without further cleaning being necessary.
  • the grate bars 22 are formed by circumferential endless elements in the form of link chains 23, each of which extends in a plane extending in the flow direction L of the conveying air.
  • Each link chain 23 is guided and driven via chain wheels 26, only the upper chain wheel 26 being shown in FIG. 6. All upper sprockets 26 are attached to a common drive axis 24 which extends transversely to the direction of flow L.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Refuse Collection And Transfer (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Earth Drilling (AREA)
EP97103724A 1996-03-07 1997-03-06 Dispositif de transport par aspiration nottament une drague suceuse Expired - Lifetime EP0794291B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19608782 1996-03-07
DE19608782A DE19608782A1 (de) 1996-03-07 1996-03-07 Saugfördervorrichtung, insbesondere Saugbagger

Publications (2)

Publication Number Publication Date
EP0794291A1 true EP0794291A1 (fr) 1997-09-10
EP0794291B1 EP0794291B1 (fr) 2002-02-06

Family

ID=7787468

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97103724A Expired - Lifetime EP0794291B1 (fr) 1996-03-07 1997-03-06 Dispositif de transport par aspiration nottament une drague suceuse

Country Status (4)

Country Link
EP (1) EP0794291B1 (fr)
AT (1) ATE213039T1 (fr)
DE (2) DE19608782A1 (fr)
ES (1) ES2171769T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2787733A1 (fr) * 1998-12-28 2000-06-30 Delta Neu Dispositif de captation de dechets dans un flux d'air et de filtration des poussieres et installation de collecte aeraulique de dechets et poussieres
WO2011003588A1 (fr) * 2009-07-07 2011-01-13 Dieffenbacher Gmbh Co. Kg Machine de dispersion comprenant au moins un élément de résistance au flux et procédé pour faire fonctionner la machine de dispersion comprenant un élément de résistance au flux
WO2011003599A1 (fr) * 2009-07-07 2011-01-13 Dieffenbacher Gmbh + Co. Kg Procédé de nettoyage d'un élément de résistance au flux dans une machine de dispersion et dispositif pour nettoyer un élément de résistance au flux

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1849800A (en) * 1930-11-03 1932-03-15 Hetherington & Berner Inc Stone box
DE2311315A1 (de) * 1973-03-07 1974-09-12 Artur Simon Maschb Gmbh Sieb
CH625140A5 (en) * 1977-09-19 1981-09-15 Werner Grossmann Separating device for sorting fruit and contaminants
US4558787A (en) * 1983-08-01 1985-12-17 Marcus Danielsson Screening device having a screen deck composed of two screen frames
US4660726A (en) * 1983-06-15 1987-04-28 Rudolf Woode Bar screen
EP0368129A1 (fr) * 1988-11-05 1990-05-16 VMB VESTA MASCHINENBAU GMBH & CO. KG Drague suceuse

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE341221C (de) * 1919-09-26 1921-09-28 Siemens Schuckertwerke G M B H Abscheider fuer Saugluftfoerderanlagen
DE647143C (de) * 1932-09-20 1937-06-29 Erwin Kramer Dr Ing Windsichtvorrichtung
DE2008480A1 (en) * 1970-02-24 1971-09-09 Chemische Werke Hüls AG, 4370 Mari Dust separation from plastic granulate
DE3316075A1 (de) * 1983-05-03 1984-11-08 Ibau Hamburg Ingenieurgesellschaft Industriebau Mbh, 2000 Hamburg Vorrichtung zum foerdern von staubfoermigem gut, insbesondere flugasche und zement
FR2606051B1 (fr) * 1986-10-30 1991-11-15 Gosselin Claude Engin de travaux publics pour la realisation de tranchees
DE3710283C2 (de) * 1987-03-28 1998-04-16 Zueblin Ag Einrichtung zum Abbau und Abtransport von kontaminiertem Erdreich

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1849800A (en) * 1930-11-03 1932-03-15 Hetherington & Berner Inc Stone box
DE2311315A1 (de) * 1973-03-07 1974-09-12 Artur Simon Maschb Gmbh Sieb
CH625140A5 (en) * 1977-09-19 1981-09-15 Werner Grossmann Separating device for sorting fruit and contaminants
US4660726A (en) * 1983-06-15 1987-04-28 Rudolf Woode Bar screen
US4558787A (en) * 1983-08-01 1985-12-17 Marcus Danielsson Screening device having a screen deck composed of two screen frames
EP0368129A1 (fr) * 1988-11-05 1990-05-16 VMB VESTA MASCHINENBAU GMBH & CO. KG Drague suceuse

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2787733A1 (fr) * 1998-12-28 2000-06-30 Delta Neu Dispositif de captation de dechets dans un flux d'air et de filtration des poussieres et installation de collecte aeraulique de dechets et poussieres
WO2011003588A1 (fr) * 2009-07-07 2011-01-13 Dieffenbacher Gmbh Co. Kg Machine de dispersion comprenant au moins un élément de résistance au flux et procédé pour faire fonctionner la machine de dispersion comprenant un élément de résistance au flux
WO2011003599A1 (fr) * 2009-07-07 2011-01-13 Dieffenbacher Gmbh + Co. Kg Procédé de nettoyage d'un élément de résistance au flux dans une machine de dispersion et dispositif pour nettoyer un élément de résistance au flux

Also Published As

Publication number Publication date
ES2171769T3 (es) 2002-09-16
EP0794291B1 (fr) 2002-02-06
DE19608782A1 (de) 1997-09-18
DE59706272D1 (de) 2002-03-21
ATE213039T1 (de) 2002-02-15

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