WO1995026825A1 - Vorrichtung zum wiederaufbereiten von restbeton mit einer förderschnecke - Google Patents
Vorrichtung zum wiederaufbereiten von restbeton mit einer förderschnecke Download PDFInfo
- Publication number
- WO1995026825A1 WO1995026825A1 PCT/DE1994/000634 DE9400634W WO9526825A1 WO 1995026825 A1 WO1995026825 A1 WO 1995026825A1 DE 9400634 W DE9400634 W DE 9400634W WO 9526825 A1 WO9526825 A1 WO 9526825A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- trough
- funnel
- screw
- residual concrete
- present
- Prior art date
Links
Classifications
-
- 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
- B03B5/48—Washing granular, powdered or lumpy materials; Wet separating by mechanical classifiers
-
- 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
- B03B5/48—Washing granular, powdered or lumpy materials; Wet separating by mechanical classifiers
- B03B5/52—Spiral classifiers
-
- 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
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
- B03B9/06—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse
- B03B9/061—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse the refuse being industrial
- B03B9/063—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse the refuse being industrial the refuse being concrete slurry
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/58—Construction or demolition [C&D] waste
Definitions
- the invention relates to a device for reprocessing residual concrete.
- the reprocessing is carried out by means of a screw conveyor which leads out of a funnel at an angle and which is also referred to as a wash-out screw.
- the funnel is used to hold the residual concrete to be reprocessed, while the actual reprocessing of the residual concrete, i.e. the sand and gravel components present in the concrete are freed from sand and cement components adhering to them during their transport along the screw conveyor.
- Reprocessing plants are becoming increasingly necessary for environmental protection reasons. But they are advantageous not only for ecological but also for economic reasons, since the constituents obtained as residual concrete can be reused in the production of new concrete.
- a reprocessing device in the form of a wash-out screw is known.
- the funnel present in the area of the feed opening of this screw must be of a relatively large size in order to be able to accommodate the relatively large quantities of residual concrete which occur intermittently.
- This funnel must also be more or less completely filled with water, since the actual recycling, ie separation of the constituents of the residual concrete from one another, takes place in a water bath.
- This water bath forms along the screw, so that through the screw water must also be conveyed diagonally upwards. This water then runs down into the funnel inside the snail. The water is both heavily polluted and very aggressive. This leads to major problems for the screw conveyor bearing.
- the components present in the residual concrete are separated within a washout trough.
- a wash-out trough is known, for example, from utility model G 91 00 177.
- Trough sections referred to as prewash chamber and post-wash chamber are present in the wash-out trough.
- a transverse partition is arranged between these trough sections, which does not completely hermetically separate the two trough sections, so that there is a certain permeability from the pre-washing chamber into the post-washing chamber.
- the individual components of the residual concrete are separated from one another.
- the individual components of the residual concrete present in the area of the post-washing chamber are therefore already regularly separated from one another.
- the solid constituents such as the gravel and sand constituents of the residual concrete, are shoveled out of this post-washing chamber by means of a cup wheel, for example, into a screw conveyor leading out of the trough.
- the screw conveyor projects into the trough area, but is positioned with its lower filling area above the water level present in the trough. Therefore, only gravel and sand components loosened from the cement components are conveyed out of the trough by the screw conveyor.
- the screw conveyor therefore does not have to be designed to transport residual concrete. This reduces the wear on the actual screw body and the wall surrounding it.
- the water reaching the area of the screw body is not as aggressive as is the case with the washing screws mentioned above. This has a correspondingly favorable effect on the screw bearings.
- the object of the invention is to provide an improved reprocessing device using the washout screw known in the art.
- the invention is based on the knowledge that the operation of a washing-out screw can be favorably influenced by the additional arrangement of a trough.
- the trough does not serve as a wash-out trough, as is known in the prior art, but rather serves for the intermediate storage of the residual concrete delivered to the reprocessing device. While in the known wash-out screw only its receiving funnel is available for receiving, this receiving area can now be increased as desired by the additional connection of a trough or, more generally, a container.
- the major problem that reprocessing plants have to be designed for the maximum amount of residual concrete that can be accumulated per unit of time is thus substantially mitigated. Intermittent amounts of residual concrete can now be picked up and buffered both in the actual receiving funnel of the wash-out screw and in the upstream container.
- a conveyor device is expediently provided, with which residual concrete present in the trough can be filled into the area of the washing-out screw and thus into the area of the funnel in a predetermined amount.
- This conveyor can, for example easily realized by a screw conveyor known per se in the form of a helix.
- This helix is advantageously designed to be rotatable in both directions in order to be able to move the residual concrete back and forth within the trough without having to transport it directly into the area of the wash-out screw.
- the wash-out screw promotes or stops the supply of residual concrete from the trough depending on the output. In the park position (STOP), residual concrete is prevented from setting by the back and forth movement of the helix in the trough.
- the funnel can be adjusted relative to the trough with or without the screw conveyor opening into it.
- the water level present in the funnel can be changed or a water bath can be created in the trough itself.
- the water bath in the trough and in the wash-out screw is advantageously defined by appropriately provided outlets. In this way, the actual washing-out activity of the washing-out screw can be influenced.
- the bottom of the funnel will be arranged below the bottom of the trough, since the lower region of the conveyor screw must constantly immerse in water; the washing out of the screw conveyor takes place with the help of water, which should always be present mainly in the lower area of the screw conveyor - and there in the lower area of the funnel.
- water can be added to the side of the screw area. It can be seen that this type of reprocessing means that the wash-out screw leading out of the funnel must have a certain length. This length also depends primarily on the desired discharge height.
- FIG. 1 shows a reprocessing device according to the invention in a schematic oblique view.
- a device 10 for reprocessing residual concrete has a so-called washout screw 12 and a so-called metering trough 14 connected upstream of this screw.
- the wash-out screw 12 has a closed housing 16 which envelops a screw conveyor 18 from below and from the side. With its lower end 20, the screw 18 protrudes into a funnel 22.
- the housing 16 is connected to the wall of the funnel 22 in a liquid-tight manner.
- the screw 18 is driven by a motor 24 attached to the head of the wash-out screw 12.
- the material conveyed out by the washing-out screw 12 protruding upward at an angle from the hopper 22 falls out of a discharge shaft 26 from the area of the screw 18 or the housing 16.
- the funnel 22 is covered from above by a grate 28. Inside the funnel 22, the concrete and liquid to be treated are present, as is the water present in the residual concrete, and also any water additionally added.
- the water level line 30 of this water is indicated by dots. It can be seen that the worm 18 is present with its lower end 20 below the line 30 and thus within the water.
- the dosing trough 14 is present.
- This trough has a cross section circular bottom 32.
- the trough 14 is closed at the top by a grate 34, as is the case with the grate 28 also in the funnel 22.
- the grate 34 like the grate 28, can be used to dump or pour in residual concrete from, for example, a truck mixer, both into the trough 14 and into the funnel 22.
- the bottom 32 is bordered on the front by two frame frames 36, 38. With these frames 36, 38, the trough 14 rests on a surface, not shown.
- the two frames 36, 38 are connected by a shaft 40 which is rotatably mounted on the two frames 36, 38. This shaft 40 passes through a frame 36 and ends at a motor 42. Via this motor 42, the shaft 40 can be rotated in both directions.
- a helix 44 is fastened on the shaft 40 via star-like spacers 43.
- the curvature of this helix 44 is adapted to the curvature of the base 32, so that concrete present in the trough 14 can be pushed back and forth by the helix 44 in both directions of the double arrow 46.
- the helix 44 ends in the region of the left frame 36 in a circular bulkhead 48.
- the conveying capacity of the trough 14 can be variably adjusted by this or also by an additional rotating bulkhead, such as that from G 91 00 177 is known for a washing trough described there.
- opening 50 which corresponds to a corresponding opening 50 in the funnel 22.
- These openings 50 are provided so that concrete 14 present in the trough can be pushed through the openings 50 into the funnel 22 through the openings 50 through the openings 44 in the trough.
- the bottom 32 of the trough 14 is arranged in height relative to the funnel 22 so that the water level line 30 a corresponding continuation above the floor 32 is found. Water is thus not only in the funnel 22 but also in the area above the bottom 32 of the metering trough 14.
- the height of the funnel 22 and trough 14 can be adjusted relative to one another, which is to be indicated by the double arrow 54.
- the water level (water level line 30) in the trough 14 from zero to preferably below the shaft 40.
- the trough can be used not only for storage but also, depending on the operating situation, for prewashing.
- the height of the water level in the funnel 22 can also be influenced by the adjustment options described above.
- the funnel 22 is arranged extremely deep relative to the trough 14, water will only flow from the funnel 22 into the trough 14 when the water level in the funnel 22 is relatively high.
- the screw 18 can thus be positioned more or less immersed in the funnel 22 or in the water present in the funnel 22.
- the metering trough 12 there is an outlet 62 comparable to the outlet 60, which in the present case is arranged approximately at the level of the shaft 40. Residual water can also be removed from this outlet and recycled in the manufacture of concrete.
- the device 10 functions in the following manner.
- Residual concrete is delivered from a truck mixer and is to be reprocessed by the washing screw 12.
- This residual concrete is poured into the trough 14, for example. Due to the large volume of the trough 14 relative to the hopper 22, a relatively large amount of concrete can be picked up by the device 10 at short notice. Within the trough 14, this residual concrete is pushed through the helix 44 into the area of the openings 50 and through it into the funnel 22. This promotion depends on the rotational speed of the helix 44 and on the mutual structural alignment of the trough 14 and funnel 22. If there is already sufficient concrete in the hopper 22, the helix 40 can be driven in the opposite direction of rotation, so that no more concrete is pushed out of the trough 14 into the hopper 22. In the alternative, the material feed from the metering trough 14 into the funnel 22 can also be regulated by a slide which is adjustably arranged in the opening 50 and is not shown in the drawing.
- the residual concrete present in the hopper 22 is now conveyed upward out of the hopper 22 by the screw 18 set in the appropriate rotation.
- the gravel and sand components present in the residual concrete are freed from the cement adhering to these particles.
- the cement water conveyed upward from the funnel 22 flows backwards into the funnel 22.
- the washing-out screw 12 is at least so elongated that the gravel and sand components cleaned of cement fall out of the chute 26 at the top.
- the device 10 according to the invention makes it possible to To significantly increase the close capacity of wash-out screws which are already known in the prior art and are available on the market.
- the trough 14 connected upstream of the hopper 22 of the washing-out screw 12 is of simple design and construction.
- the trough 14 can be provided in different sizes, depending on the maximum intermittent amounts of concrete to be expected.
- the wash-out screw 12 itself could also be designed or used to separate sand and gravel.
- the washing-out screw would have to be designed in its area above the water level 30 in the manner of screw conveyors, as are known from G 92 11395.
- a flexible, elastic track with openings could be arranged between the housing 16 and the screw conveyor 18. Gravel and sand components with a maximum grain diameter corresponding to the openings would then fall out through these openings. Should these separated gravel and sand components be separated even further into their individual grain fractions, a further screw conveyor with correspondingly smaller openings could be provided below the openings in the screw conveyor 18. In this way, the sand and gravel components conveyed out of the hopper 22 could be divided into any number of grain fractions.
Landscapes
- Screw Conveyors (AREA)
- Refuse Collection And Transfer (AREA)
- Treatment Of Sludge (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19944480790 DE4480790C1 (de) | 1994-03-31 | 1994-06-08 | Vorrichtung zum Wiederaufbereiten von Restbeton mit einer Förderschnecke |
DE4480790D DE4480790D2 (de) | 1994-03-31 | 1994-06-08 | Vorrichtung zum Wiederaufbereiten von Restbeton mit einer Förderschnecke |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEG9405470.3U | 1994-03-31 | ||
DE9405470U DE9405470U1 (de) | 1994-03-31 | 1994-03-31 | Vorrichtung zum Wiederaufbereiten von Restbeton mit einer Förderschnecke |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995026825A1 true WO1995026825A1 (de) | 1995-10-12 |
Family
ID=6906799
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1994/000634 WO1995026825A1 (de) | 1994-03-31 | 1994-06-08 | Vorrichtung zum wiederaufbereiten von restbeton mit einer förderschnecke |
Country Status (2)
Country | Link |
---|---|
DE (2) | DE9405470U1 (de) |
WO (1) | WO1995026825A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19801070B4 (de) * | 1998-01-14 | 2006-01-05 | Horst Brenner | Dosiereinrichtung zur Pufferung und Dosierung |
ES2385908A1 (es) * | 2009-03-20 | 2012-08-02 | Gbr Brenner & Kloiber | Máquina lavadora de hormigón residual con cámara de lavado, mecanismo transportador y transmisión. |
US9725369B2 (en) | 2014-08-13 | 2017-08-08 | Crispycrete, Llc | Method of processing unhardened concrete |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3814336A (en) * | 1972-06-14 | 1974-06-04 | Garbalizer Corp | Hydropulper and classifier equipment |
EP0167646A1 (de) * | 1984-07-10 | 1986-01-15 | Stetter GmbH | Restbeton-Aufbereitungsanlage |
DE8625038U1 (de) * | 1986-09-19 | 1986-11-06 | Wortmann, Detlev, 4970 Bad Oeynhausen | Vorrichtung zum Auswaschen von Beton |
CH662774A5 (en) * | 1984-07-11 | 1987-10-30 | Automation Ag | Method and device for recovering gravel, sand and water when residual concrete and wash water arise |
DE3906645A1 (de) * | 1989-03-02 | 1990-09-13 | Emil Sandau | Auswaschvorrichtung fuer restbeton |
DE9100177U1 (de) * | 1991-01-09 | 1991-03-28 | B.I.B. Umwelttechnik & - Beratung GmbH, 7141 Beilstein | Auswaschtrog für Restbeton |
DE9211395U1 (de) * | 1992-08-25 | 1992-11-12 | Brenner, Horst, 7141 Beilstein | Fördervorrichtung für beim Wiederaufbereiten von Restbeton anfallende Zuschlagstoffe |
US5268111A (en) * | 1992-02-03 | 1993-12-07 | Metz Jeffrey L | Concrete reclamation system with mixing agitator |
-
1994
- 1994-03-31 DE DE9405470U patent/DE9405470U1/de not_active Expired - Lifetime
- 1994-06-08 DE DE19944480790 patent/DE4480790C1/de not_active Expired - Fee Related
- 1994-06-08 WO PCT/DE1994/000634 patent/WO1995026825A1/de active Application Filing
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3814336A (en) * | 1972-06-14 | 1974-06-04 | Garbalizer Corp | Hydropulper and classifier equipment |
EP0167646A1 (de) * | 1984-07-10 | 1986-01-15 | Stetter GmbH | Restbeton-Aufbereitungsanlage |
CH662774A5 (en) * | 1984-07-11 | 1987-10-30 | Automation Ag | Method and device for recovering gravel, sand and water when residual concrete and wash water arise |
DE8625038U1 (de) * | 1986-09-19 | 1986-11-06 | Wortmann, Detlev, 4970 Bad Oeynhausen | Vorrichtung zum Auswaschen von Beton |
DE3906645A1 (de) * | 1989-03-02 | 1990-09-13 | Emil Sandau | Auswaschvorrichtung fuer restbeton |
DE9100177U1 (de) * | 1991-01-09 | 1991-03-28 | B.I.B. Umwelttechnik & - Beratung GmbH, 7141 Beilstein | Auswaschtrog für Restbeton |
US5268111A (en) * | 1992-02-03 | 1993-12-07 | Metz Jeffrey L | Concrete reclamation system with mixing agitator |
DE9211395U1 (de) * | 1992-08-25 | 1992-11-12 | Brenner, Horst, 7141 Beilstein | Fördervorrichtung für beim Wiederaufbereiten von Restbeton anfallende Zuschlagstoffe |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19801070B4 (de) * | 1998-01-14 | 2006-01-05 | Horst Brenner | Dosiereinrichtung zur Pufferung und Dosierung |
ES2385908A1 (es) * | 2009-03-20 | 2012-08-02 | Gbr Brenner & Kloiber | Máquina lavadora de hormigón residual con cámara de lavado, mecanismo transportador y transmisión. |
US9725369B2 (en) | 2014-08-13 | 2017-08-08 | Crispycrete, Llc | Method of processing unhardened concrete |
Also Published As
Publication number | Publication date |
---|---|
DE9405470U1 (de) | 1994-06-30 |
DE4480790C1 (de) | 1999-04-15 |
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