EP0811428A2 - Dispositif pour séparer des matières composites en suspension dans un liquide - Google Patents

Dispositif pour séparer des matières composites en suspension dans un liquide Download PDF

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Publication number
EP0811428A2
EP0811428A2 EP97710004A EP97710004A EP0811428A2 EP 0811428 A2 EP0811428 A2 EP 0811428A2 EP 97710004 A EP97710004 A EP 97710004A EP 97710004 A EP97710004 A EP 97710004A EP 0811428 A2 EP0811428 A2 EP 0811428A2
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EP
European Patent Office
Prior art keywords
composite material
cleaning container
liquid
suspended
inlet
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Withdrawn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
EP97710004A
Other languages
German (de)
English (en)
Other versions
EP0811428A3 (fr
Inventor
Bernhard Giersberg
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.)
Gerd Meurer Abwassertechnik GmbH
Original Assignee
Gerd Meurer Abwassertechnik 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 Gerd Meurer Abwassertechnik GmbH filed Critical Gerd Meurer Abwassertechnik GmbH
Publication of EP0811428A2 publication Critical patent/EP0811428A2/fr
Publication of EP0811428A3 publication Critical patent/EP0811428A3/fr
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B11/00—Feed or discharge devices integral with washing or wet-separating equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
    • B03B5/62—Washing granular, powdered or lumpy materials; Wet separating by hydraulic classifiers, e.g. of launder, tank, spiral or helical chute concentrator type
    • B03B5/623—Upward current classifiers

Definitions

  • the invention relates to a device for separating composite material suspended in liquid, which consists of a carrier material and a contaminate connected to the carrier material, into its components carrier material and contaminant, the carrier material and the material of the contaminant having different densities, and in which the Liquid suspended material in a cleaning container for separating the composite is subjected to an abrasive stress caused by flow forces in the liquid and / or by an agitator which consists of a shaft arranged centrally in the longitudinal axis of the cleaning container and of mixing arms connected to it at different heights of the cleaning container , the inlet of the suspended composite material being located in the upper region of the cleaning container and via a device in the inlet direction having a swirling space Entry opening of the cleaning container takes place, and in which at different heights of the cleaning container there are extraction devices for the contaminant and the carrier material, a device for introducing process liquid into the cleaning container being provided above the lower extraction device for the higher density material.
  • Devices of this type are required and used in the separation of inorganic material associated with organic material as a contaminant, such as in the treatment of organically polluted sand from carcass plants, in which the separated materials are then either to be disposed of or to be added to the clarification process as reactants.
  • the materials remaining in sewer or street cleaning usually consist of an inorganic material in the form of sand, stone, slag, etc., which is contaminated to a considerable extent with organic material and should not be disposed of as a composite, since the resulting quantities of hazardous waste become too large.
  • the composite material present for the separation treatment is suspended in a liquid or is also present in a suspended mixture of contaminant, carrier material and composite material, so that the liquid present is used in the known separation devices or sand washing systems and, if appropriate, with further similar process liquid or with additives is transferred.
  • WO 95/30486 describes a device for separating inorganic material contaminated with organic material from a liquid, in which a fluidized sand layer is built up in the lower region of a cleaning container which is contaminated with a strong swirling flow and which is directed upwards through a perforated floor distributed over a perforated floor Flow of additional process liquid is kept in motion and in which the perforated bottom has a larger opening approximately in the middle through which the inorganic material cleaned by friction and / or abrasion within the fluid flow is to be removed from organic contaminants.
  • the device is initially constructed so that the swirling space is designed as a cylindrical swirl chamber provided with a bottom and a lid, with an inlet pipe arranged tangentially on the cylinder circumference and an outlet opening arranged at the bottom of the cylinder for the composite material suspended in liquid, and to the outlet opening a funnel-shaped inlet widening in the direction of the flow emerging from the swirl chamber is connected, the outlet opening and the axis of the funnel-shaped inlet being arranged eccentrically to the axis of the cylindrical swirl chamber.
  • the swirling space is designed as a cylindrical swirl chamber provided with a bottom and a lid, with an inlet pipe arranged tangentially on the cylinder circumference and an outlet opening arranged at the bottom of the cylinder for the composite material suspended in liquid, and to the outlet opening a funnel-shaped inlet widening in the direction of the flow emerging from the swirl chamber is connected, the outlet opening and the axis of the funnel-shaped inlet being arranged eccentrically to the axis of the cylindrical swirl chamber.
  • This eccentric arrangement and the formation of an expanding funnel-shaped inlet completely dissipate the initially existing swirl of the suspended composite material, which is built up by the inlet pipe arranged tangentially on the cylinder circumference and the rotation flow generated thereby in the swirl chamber, and into a high-energy and diffuse vortex flow without Preferred directions transferred, in which a high abrasive load of the mixture of contaminant, carrier material and composite material already sets in due to the existing flow forces.
  • the device for introducing process liquid into the cleaning container is designed as a grating constructed from pipes, the pipes inside the cleaning container being provided with outlet bores and being connected to a supply line for process liquid which is present outside the cleaning container.
  • Such a design makes it possible, on the one hand, to use the entire cross section of the cleaning container as an "effective" reaction space available for the lowering of the higher density material in the cleaning container and, on the other hand, to avoid settling, in particular in the devices for supplying the process liquid.
  • the pipes of the grating in particular in connection with the outlet bores from which the process liquid flows into the cleaning container, do not offer any hold or any possibility of contact or deposition for the material of higher density.
  • This material then sinks through the grating and can be below the grating with the extraction device provided there be carried out.
  • This process is supported by the fact that at least one stirring arm is arranged at a short distance above the grating.
  • the funnel-shaped inlet is advantageously formed between the outlet opening of the swirl chamber and the entry opening into the cleaning container located in a cover of the cleaning container. This creates the diffuse vortex flow without preferred directions before or at the time of entry into the cleaning container, thereby avoiding a falling flow that acts too strongly against the process liquid introduced into the lower part of the cleaning container.
  • a second funnel-shaped inlet extending into the cleaning container and widening in the direction of the flow emerging from the swirl chamber, which is designed as a pipe section in an upstream direction cylindrical channel opens, the axis of the second funnel-shaped inlet and the tube section being arranged eccentrically to the axis of the cylindrical swirl chamber, the vortex formation on the free surface in the cleaning container can be kept relatively low, so that the deduction to be provided in the vicinity of the free surface for the Material of lower density subtracts no or only insignificant amounts of the other materials present in the mixture.
  • the pipes forming the grating are spaced apart from one another to the grain size of the material of higher density, i.e.
  • the carrier material is adjusted and arranged so that the main fraction of the higher density material can sink through the grating into the lower part of the cleaning container. The resulting adjustment to the quantity distribution within the materials to be separated increases the process speed by a multiple.
  • the device for introducing process liquid into the cleaning container is designed to be exchangeable as a container part equipped with connecting devices.
  • a cassette design allows, for example, the use of a cleaning container for different sewage sludge.
  • the tubes forming the grating are designed to be rotatable about their longitudinal axis. Particularly in the case of rows of outlet bores which are only present over a short peripheral part, this results in a simple one Possibility to influence the direction of the incoming process liquid and thus to influence the sinking behavior of the higher density material through the grating.
  • baffles are arranged in the area of the inlet of the composite material suspended in liquid within the cleaning container and radially with respect to the longitudinal axis of the container, which are inclined to produce a main component of the velocity of the incoming composite material which is suspended in liquid and which is tangential to the baffle plate.
  • the incoming flow of the mixture of contaminate, carrier material and composite material can optionally be calmed down or adapted to the process control, for example, with a slight downward or upward rotating flow component.
  • the guide plates are adjustable in their inclination.
  • the pipe section adjoining the second funnel-shaped inlet is supported on the guide plates. This training facilitates opening the cleaning container for maintenance purposes.
  • a further extraction device for mixtures of contaminate, carrier material and composite material is provided above the device for introducing process liquid.
  • Such a further extraction device is used for safe process control in that, for example, in cases in which a sudden change in the mixture supplied is detected, extraction is possible and an upstream changeover, e.g. of the grating can be carried out.
  • the agitator has at least one further agitator arm, which is arranged at the level of the further fume cupboard for mixtures of contaminants, carrier material and composite material and whose outer profile is an opening in the cleaning container for the fume cupboard for Mixtures are swept at a distance.
  • the cleaning container consists of at least four superimposed segments, of which the uppermost frustoconical and tapering down to the diameter of the adjoining second cylindrical segment, and in which the second segment down a third, grating-receiving rectangular segment adjoins, whose side lengths are dimensioned such that the diameter of the second segment can be inscribed in the third segment, and in which the lower, fourth segment is formed in a funnel shape tapering downward except for a discharge opening to the subsequent discharge device for the higher density material.
  • the cleaning container consists of at least four superimposed segments, of which the uppermost frustoconical and tapering down to the diameter of the adjoining second cylindrical segment, and in which the second segment down a third, grating-receiving rectangular segment adjoins, whose side lengths are dimensioned such that the diameter of the second segment can be inscribed in the third segment, and in which the lower, fourth segment is formed in a funnel shape tapering downward except for a discharge opening to the subsequent discharge device for the higher density material.
  • a cylindrical overflow ring connected to its lower edge with the wall of the truncated cone is arranged in the upper region of the uppermost frustoconical and tapering segment, which is profiled circumferentially on its upper circumference with downwardly tapering cutouts, and that the extraction device for the material of lower density is arranged in the upper segment and outside the cylindrical overflow ring.
  • the removal device for the material of higher density is designed as a screw conveyor which feeds obliquely upwards from the removal opening and consists of a screw conveyor which rotates in a tube about its longitudinal axis, the axis of the screw running parallel to and eccentrically below the tube axis. This results in a crescent-shaped gap within the screw conveyor, so that any excess process liquid still present can easily run off.
  • FIG. 1 shows the cleaning container 1 of a device according to the invention for separating composite material suspended in liquid with its segments 2, 3, 4 and 5 in a perspective view.
  • the upper segment 2 is frustoconical and down to the diameter of the adjoining second cylindrical segment 3.
  • the cover 6 of the upper segment 2 has two flaps 7 which can be removed for cleaning and maintenance.
  • the swirl chamber 9 is connected via a flange connection and via a funnel-shaped inlet 8, on which in turn the motor-gear unit 10 for driving the agitator 11 is fastened.
  • the outlet opening 12 of the swirl chamber and the funnel-shaped inlet 8 are arranged eccentrically to the axis of the swirl chamber 9.
  • the extraction device 13 arranged on the segment 1 for the lower-density material and the extraction device 14 for a mixture of contaminant, carrier material and composite material can also be seen.
  • the cylindrical segment 3 is adjoined at the bottom by the box-shaped segment 4, which contains the device 26 for introducing process liquid shown in more detail in FIGS. 2a-2c and 4, and the funnel-shaped segment 5, which is connected at its lower end with the withdrawal device 32 designed as an inclined upward conveying screw conveyor 15 for the material of higher density.
  • the screw in the screw conveyor 15, not shown in detail, with its axis parallel and eccentrically below the pipe axis, is driven by the motor-gear unit 16.
  • pressure probes, flow probes, level gauges etc. can be used, which are located at suitable points in the cleaning container be attached and depending on the detected conditions in the cleaning tank switch on the screw conveyor and thus initiate the removal of the higher density material.
  • FIGS. 2a to 2c show cleaning containers 1 of the device 1 according to the invention for separating composite material suspended in liquid in several views and partially in section.
  • the stirrer 11 consisting of a shaft arranged centrally in the longitudinal axis of the cleaning container and of stirring arms 18, 19 and 20 connected to it at different heights of the cleaning container can be seen, the stirring arm 19 at the level of the extraction device 14 for the mixture of contaminant, Base material and composite material is arranged.
  • the guide plates 21, 22, and 23, which are arranged radially with respect to the longitudinal axis of the container and which are inclined to produce a main component of the velocity of the incoming composite material which is suspended in liquid and which form tangentially to the guide plate, are located in the upper part of segment 2.
  • a second funnel-shaped inlet 24 which widens in the direction of the flow emerging from the swirl chamber and which opens into a cylindrical channel which is formed in the direction of flow and is designed as a tubular section 24a.
  • the axis of the second funnel-shaped inlet and the pipe section are also arranged eccentrically to the axis of the cylindrical swirl chamber 9.
  • FIGS. 2a and 2b show the cylindrical overflow ring 25 connected with its lower edge to the wall of the truncated cone, which is profiled all the way around on its upper circumference with cutouts tapering downwards.
  • FIG. 2a also shows the device 26 for introducing the process liquid into the cleaning container 1, which is arranged in the segment 4.
  • FIG. 3 shows two views of the swirl chamber 9 with the funnel-shaped inlet 8 and the outlet opening 12, wherein it can be clearly seen that outlet opening 12 and the axis of the funnel-shaped inlet 8 are arranged eccentrically to the axis of the cylindrical swirl chamber 9.
  • inlet pipe 27 arranged tangentially on the cylinder circumference of the swirl chamber 9, by the arrangement of which a high-energy rotational flow is generated within the swirl chamber.
  • Fig. 4 shows again the device 26 for introducing the process liquid into the cleaning container in two views. It can clearly be seen that the device 26 is constructed as a grating 29 consisting of tubes 28, the tubes 28 being connected to a feed line 30 for process liquid present outside the cleaning container and being provided with outlet bores 31 inside the cleaning container 1 or within the segment 4 .

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  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
  • Extraction Or Liquid Replacement (AREA)
EP97710004A 1996-06-07 1997-02-18 Dispositif pour séparer des matières composites en suspension dans un liquide Withdrawn EP0811428A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19622962 1996-06-07
DE1996122962 DE19622962A1 (de) 1996-06-07 1996-06-07 Vorrichtung zum Trennen von in Flüssigkeit aufgeschwemmtem Verbundmaterial

Publications (2)

Publication Number Publication Date
EP0811428A2 true EP0811428A2 (fr) 1997-12-10
EP0811428A3 EP0811428A3 (fr) 1999-04-07

Family

ID=7796439

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97710004A Withdrawn EP0811428A3 (fr) 1996-06-07 1997-02-18 Dispositif pour séparer des matières composites en suspension dans un liquide

Country Status (2)

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EP (1) EP0811428A3 (fr)
DE (1) DE19622962A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002030573A1 (fr) * 2000-10-12 2002-04-18 Läckeby Water AB Procede et dispositif de traitement de milieu
US20140069471A1 (en) * 2011-03-11 2014-03-13 Simon Cross Root crop washer
WO2014183804A1 (fr) * 2013-05-17 2014-11-20 Stigebrandt Hydroteknik Ab Séparateur et procédé de séparation de particules solides à partir de liquides
FR3040005A1 (fr) * 2015-08-10 2017-02-17 Alfyma Ind Installation perfectionnee de traitement de dechets
CN109453893A (zh) * 2018-12-25 2019-03-12 新沂市晶润石英材料有限公司 一种洗砂机用细沙回收装置以及回收方法
CN111001564A (zh) * 2019-12-17 2020-04-14 陈修如 一种建筑领域用泥沙分离装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19924164C2 (de) * 1999-02-18 2001-04-12 Bormet Maschb Gmbh Verfahren und Vorrichtung zur Separation von aus organischem und anorganischem Material zusammengesetzten Feststoffen aus einer mit Feststoffen vermischten Flüssigkeit und zur Abtrennung des anorganischen Materials aus dem Gemisch von organischen und anorganischem Material
DE20112681U1 (de) 2001-08-08 2001-10-18 Egner Umwelttechnologie GmbH, 74740 Adelsheim Vorrichtung zur Behandlung eines Feststoff-Flüssigkeitsgemisches
DE10361786A1 (de) * 2003-12-31 2005-02-17 Kuhn, Jürgen Vorrichtung zum Trennen von mit organischem Material verschmutzten anorganischem Material aus einer Schmutzflüssigkeit

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2050201A (en) * 1979-05-21 1981-01-07 English Clays Lovering Pochin Process for concentrating mica
DE4318522A1 (de) * 1992-07-21 1994-04-28 Felder Anton Vorrichtung zur zentrischen Beschickung von Becken wie Rundsandfängen, Sandklassierern oder Absetzbecken in Rundbauweise
WO1995030486A1 (fr) * 1994-05-04 1995-11-16 Hans Huber Gmbh Maschinen- Und Anlagenbau Dispositif permettant de separer d'un liquide un materiau inorganique pollue par un materiau organique
DE29517274U1 (de) * 1995-11-02 1996-01-18 Allmineral Aufbereitungstechnik GmbH & Co KG, 47198 Duisburg Vorrichtung zum Abscheiden von Leichtstoffen aus Sand und Kies

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2050201A (en) * 1979-05-21 1981-01-07 English Clays Lovering Pochin Process for concentrating mica
DE4318522A1 (de) * 1992-07-21 1994-04-28 Felder Anton Vorrichtung zur zentrischen Beschickung von Becken wie Rundsandfängen, Sandklassierern oder Absetzbecken in Rundbauweise
WO1995030486A1 (fr) * 1994-05-04 1995-11-16 Hans Huber Gmbh Maschinen- Und Anlagenbau Dispositif permettant de separer d'un liquide un materiau inorganique pollue par un materiau organique
DE29517274U1 (de) * 1995-11-02 1996-01-18 Allmineral Aufbereitungstechnik GmbH & Co KG, 47198 Duisburg Vorrichtung zum Abscheiden von Leichtstoffen aus Sand und Kies

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002030573A1 (fr) * 2000-10-12 2002-04-18 Läckeby Water AB Procede et dispositif de traitement de milieu
US10244784B2 (en) * 2001-03-11 2019-04-02 Simon Cross Root crop washer
US20140069471A1 (en) * 2011-03-11 2014-03-13 Simon Cross Root crop washer
WO2014183804A1 (fr) * 2013-05-17 2014-11-20 Stigebrandt Hydroteknik Ab Séparateur et procédé de séparation de particules solides à partir de liquides
FR3040005A1 (fr) * 2015-08-10 2017-02-17 Alfyma Ind Installation perfectionnee de traitement de dechets
CN109453893A (zh) * 2018-12-25 2019-03-12 新沂市晶润石英材料有限公司 一种洗砂机用细沙回收装置以及回收方法
CN111001564A (zh) * 2019-12-17 2020-04-14 陈修如 一种建筑领域用泥沙分离装置

Also Published As

Publication number Publication date
DE19622962A1 (de) 1997-12-11
EP0811428A3 (fr) 1999-04-07

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