EP1568478B1 - Waste-compacting machine - Google Patents
Waste-compacting machine Download PDFInfo
- Publication number
- EP1568478B1 EP1568478B1 EP20050003863 EP05003863A EP1568478B1 EP 1568478 B1 EP1568478 B1 EP 1568478B1 EP 20050003863 EP20050003863 EP 20050003863 EP 05003863 A EP05003863 A EP 05003863A EP 1568478 B1 EP1568478 B1 EP 1568478B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder
- machine
- sectors
- holes
- lining
- 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.)
- Active
Links
- 239000012530 fluid Substances 0.000 claims abstract description 6
- 239000002699 waste material Substances 0.000 claims abstract description 5
- 229910000617 Mangalloy Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 17
- 238000003825 pressing Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000010813 municipal solid waste Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
- B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
- B30B9/04—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using press rams
- B30B9/042—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using press rams co-operating with casings mounted on a movable carrier, e.g. turntable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
- B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
- B30B9/04—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using press rams
- B30B9/06—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using press rams co-operating with permeable casings or strainers
- B30B9/067—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using press rams co-operating with permeable casings or strainers with a retractable abutment member closing one end of the press chamber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
- B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
- B30B9/26—Permeable casings or strainers
Definitions
- the present invention relates to an improvement in a waste-compacting machine, particularly for urban solid waste.
- Machines which compact urban solid waste by pressing it under very high pressure, thereby causing its humid fraction, which can be recycled for production of fertilizers, to be separated from its dry fraction, which can be recycled as fuel.
- waste material is pressed within a perforated barrel supported on a cradle having passages for draining the matter through the holes of the barrel.
- WO-A-92/13710 discloses a compression screw device for consolidating and possibly dewatering material such as fibre or cellulosic material, although the pressures involved are much smaller than in a waste-compacting machine.
- EP-A-684 117 discloses a waste-compacting machine according to the preamble of claim 1 which comprises three perforated cylinders supported on a revolving drum and arranged to be cyclically filled with the material to be compacted.
- the drum is driven to rotate by steps so that all the cylinders are successively conveyed in front of a plunger, which penetrates into the cylinder and squeezes the material contained therein, thereby causing the fluid fraction to be drained through the holes.
- the drained fluid has a high abrasive power, mainly in consideration of the very high pressure reached during squeezing, so that the radial holes in the cylinders are abraded and become larger in a short time, thereby affecting the effectiveness of squeezing.
- FR-A-2 792 570 shows how to line the holes with inserts of an abrasionproof material, such as marketed under the trademark "widia”.
- Another object of the invention is that an existing machine may be provided with the lining without any alteration to it, thereby reducing the costs of the improvement.
- a waste-compacting machine 10 comprises a stationary frame 12 which pivotally supports a drum 14 having a horizontal axis A ( Fig. 4 ).
- Drum 14 supports three cylinders 16 which are open at their ends and also have horizontal axes.
- the cylinders are spaced at equal angles from each other around the axis A of the drum, and are provided with a plurality of radial holes 18.
- a loading station 20, a squeezing station 22 and an unloading station 24 are arranged in front of the drum and are angularly spaced from each other around the axis A, correspondingly to cylinders 16.
- the drum is driven to rotate by steps by a motor (not shown), in order to cyclically convey one cylinder in front of the loading station, another cylinder in front of the squeezing station, and the last cylinder in front of the unloading station.
- Loading station 20 comprises a screw feeder 26, or any other suitable feeding device such as, e.g., a pressing member, which is coaxial to cylinder 16 when the latter is positioned in front of the loading station, and is driven to rotate for conveying the material from a hopper 28 to the cylinder.
- a screw feeder 26 or any other suitable feeding device such as, e.g., a pressing member, which is coaxial to cylinder 16 when the latter is positioned in front of the loading station, and is driven to rotate for conveying the material from a hopper 28 to the cylinder.
- a wall 30 integral with stationary frame 12 is arranged in front of the base of drum 14 on the side of hopper 28, and is provided with three openings which are aligned to cylinders 16 when they are positioned in front of stations 20, 22, 24.
- Another wall 32 integral with stationary frame 12 is arranged in front of the opposite base of the drum, and is provided with two openings which are aligned to those cylinders 16 which are positioned in front of squeezing station 22 and unloading station 24. On the contrary, wall 32 shuts the end of that cylinder which is arranged in front of loading station 20.
- squeezing station 22 comprises an auxiliary piston 34, which is coaxial to the cylinder positioned in front of such station and sealingly closes one of its ends, as well as a plunger 36 that is operable to penetrate into cylinder 16 through the other end, thereby causing the material contained therein to be squeezed and the humid fraction to be drained through holes 18.
- the plunger is driven by a hydraulic cylinder 38 supported on the frame.
- the unloading station comprises a knockout piston 40, which is coaxial to that cylinder positioned in front of such station, and is operable to penetrate cylinder 16 under control of a hydraulic actuator 42 for knocking the compacted material out through that opening cut in the wall on the opposite side with respect to the piston.
- the knocked-out material is unloaded onto a chute 43 for removal.
- each cylinder 16 is lined with a cylindrical lining 44 of manganese steel, which is perforated in alignment with the holes 18 in the cylinder and consists of three adjacent, cylinder sectors 44a, 44b, 44c of a cylinder.
- each sector matching with one edge of an adjacent sector is worked by grinding for accurately matching with each other.
- One of the holes of the lining, hole 45 in Fig. 6 , and a corresponding, aligned hole in the cylinder, are engaged by a centering screw 46 for locking any mutual rotation between the lining and the cylinder, thereby maintaining the holes aligned to each other.
- the operation of the improved machine substantially corresponds to the operation of the machine described in EP-A-684 117 .
- the drum is driven to rotate by steps of 120° for cyclically subjecting each cylinder to:
- the lining resists to the abrasive action of the drained fluid and shields the cylinder from wear, while the cylinder has the task of resisting to the pressure of the material.
- Each sector can be easily manufactured with its holes by molding, by means of conventional processes known in the field.
- the radial holes can be obtained by providing the mold with a plurality of complementary studs of a refractory sand, which can be removed from the holes after molding, when the mold is open.
- longitudinal edges B and the outer surface of the lining can be worked by grinding in a way known to those persons skilled in the art.
- the lining could also consist of a different number of sectors, e.g., four or five sectors, which also could have different angular extensions.
- the lining of the example illustrated herein is described in association with a known machine having three cylinders supported on a rotatable drum, of course it could also been incorporated in another machine, provided that compaction is performed by squeezing the material in a perforated cylinder.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing Of Solid Wastes (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
Description
- The present invention relates to an improvement in a waste-compacting machine, particularly for urban solid waste.
- Machines are known which compact urban solid waste by pressing it under very high pressure, thereby causing its humid fraction, which can be recycled for production of fertilizers, to be separated from its dry fraction, which can be recycled as fuel.
- In one such machine, disclosed in
FR-A-2 615 443 WO-A-92/13710 -
EP-A-684 117 - However, it has been found that the drained fluid has a high abrasive power, mainly in consideration of the very high pressure reached during squeezing, so that the radial holes in the cylinders are abraded and become larger in a short time, thereby affecting the effectiveness of squeezing.
- With the intention of overcoming this drawback,
FR-A-2 792 570 - However, the above inserts are liable to precocious loosening, due both to wear which, by spreading over the inner wall of the cylinder, weakens their seats in the holes, and to accidental circumstances, e.g., to rigid bodies getting stuck in the holes, which, when eventually released after repeated passages of the pressing member, take the insert away therewith.
- This drawback would be effectively overcome by lining the inner surface of the cylinder with a jacket of a very hard material, such as manganese steel. However, machining manganese steel is difficult, and this circumstance has prevented such jacket from being manufactured till now. In fact, the high hardness of this material only allows the latter to be worked by superficial grinding, while machining with chip removal, such as drilling the jacket at the holes in the cylinder, cannot be carried out. Therefore, the perforation should be obtained by molding but, as well known to those persons skilled in the art, such operation is critical to put into practice, as well as very expensive.
- It is now the object of the invention to provide an improved waste-compacting machine in which the perforated cylinder is more resistant to abrasion, so that the service time of the machine between replacements is substantially longer, without increasing the overall cost of the perforated cylinder.
- Another object of the invention is that an existing machine may be provided with the lining without any alteration to it, thereby reducing the costs of the improvement.
- The above and other objects and advantages of the invention, which will better appear below, are achieved by a waste-compacting machine having the features recited in claim 1, while the other claims state other advantageous, though secondary features.
- The invention will be now described in more detail with reference to a preferred, non-exclusive embodiment, shown by way of non-limiting example in the attached drawings,
-
Fig. 1 is a side view of the waste-compacting machine according to this invention; -
Fig. 2 is a plan view of the machine ofFig. 1 ; -
Fig. 3 is a diagrammatical cross-section view along line III-III ofFig. 2 of a portion of the machine according to the invention; -
Fig. 4 is a diagrammatical, cross-section view along line IV-IV ofFig. 2 of a portion of the machine according to the invention; -
Fig. 5 is a diagrammatical, cross-section view along line V-V ofFig. 2 of a portion of the machine according to the invention; -
Fig. 6 is a perspective view of a part of the machine according to this invention; -
Fig. 7 is a perspective view of the part ofFig. 6 coupled with another part of the machine according to the invention. - With reference to the above Figures, a waste-compacting
machine 10 comprises astationary frame 12 which pivotally supports adrum 14 having a horizontal axis A (Fig. 4 ). -
Drum 14 supports threecylinders 16 which are open at their ends and also have horizontal axes. The cylinders are spaced at equal angles from each other around the axis A of the drum, and are provided with a plurality ofradial holes 18. - A
loading station 20, asqueezing station 22 and anunloading station 24 are arranged in front of the drum and are angularly spaced from each other around the axis A, correspondingly tocylinders 16. The drum is driven to rotate by steps by a motor (not shown), in order to cyclically convey one cylinder in front of the loading station, another cylinder in front of the squeezing station, and the last cylinder in front of the unloading station. - Loading
station 20 comprises ascrew feeder 26, or any other suitable feeding device such as, e.g., a pressing member, which is coaxial tocylinder 16 when the latter is positioned in front of the loading station, and is driven to rotate for conveying the material from ahopper 28 to the cylinder. - A
wall 30 integral withstationary frame 12 is arranged in front of the base ofdrum 14 on the side ofhopper 28, and is provided with three openings which are aligned tocylinders 16 when they are positioned in front ofstations wall 32 integral withstationary frame 12 is arranged in front of the opposite base of the drum, and is provided with two openings which are aligned to thosecylinders 16 which are positioned in front ofsqueezing station 22 andunloading station 24. On the contrary,wall 32 shuts the end of that cylinder which is arranged in front ofloading station 20. - In a way known per se,
squeezing station 22 comprises anauxiliary piston 34, which is coaxial to the cylinder positioned in front of such station and sealingly closes one of its ends, as well as aplunger 36 that is operable to penetrate intocylinder 16 through the other end, thereby causing the material contained therein to be squeezed and the humid fraction to be drained throughholes 18. The plunger is driven by ahydraulic cylinder 38 supported on the frame. - In a way known per se, the unloading station comprises a
knockout piston 40, which is coaxial to that cylinder positioned in front of such station, and is operable to penetratecylinder 16 under control of ahydraulic actuator 42 for knocking the compacted material out through that opening cut in the wall on the opposite side with respect to the piston. The knocked-out material is unloaded onto achute 43 for removal. - According to this invention, the inner surface of each
cylinder 16 is lined with acylindrical lining 44 of manganese steel, which is perforated in alignment with theholes 18 in the cylinder and consists of three adjacent, cylinder sectors 44a, 44b, 44c of a cylinder. - To this purpose, the longitudinal edges B of each sector matching with one edge of an adjacent sector, as well as the outer surface of the sector matching with the inner surface of the cylinder, are worked by grinding for accurately matching with each other.
- One of the holes of the lining,
hole 45 inFig. 6 , and a corresponding, aligned hole in the cylinder, are engaged by a centeringscrew 46 for locking any mutual rotation between the lining and the cylinder, thereby maintaining the holes aligned to each other. - The operation of the improved machine substantially corresponds to the operation of the machine described in
EP-A-684 117 - a loading step, in which a part of the material in
hopper 28 is conveyed into the cylinder aligned to the loading station byscrew feeder 26 or pressing member, - a squeezing step, in which squeezing
member 36 penetrates into that cylinder aligned to the squeezing station and causes the material contained therein to be squeezed, againstauxiliary piston 34, the fluid fraction being drained through the holes in the cylinder, - an unloading step, in which
knockout piston 40 penetrates through one end of the cylinder aligned to the unloading station and pushes the compacted material out through the opposite end. - During squeezing, the lining resists to the abrasive action of the drained fluid and shields the cylinder from wear, while the cylinder has the task of resisting to the pressure of the material.
- Each sector can be easily manufactured with its holes by molding, by means of conventional processes known in the field. For example, the radial holes can be obtained by providing the mold with a plurality of complementary studs of a refractory sand, which can be removed from the holes after molding, when the mold is open. Also, longitudinal edges B and the outer surface of the lining can be worked by grinding in a way known to those persons skilled in the art.
- A preferred embodiment of the invention has been described herein, but of course many changes may be made by a person skilled in the art, depending on the circumstances, within the scope of the inventive concept. For example, the lining could also consist of a different number of sectors, e.g., four or five sectors, which also could have different angular extensions. Further, though the lining of the example illustrated herein is described in association with a known machine having three cylinders supported on a rotatable drum, of course it could also been incorporated in another machine, provided that compaction is performed by squeezing the material in a perforated cylinder.
Claims (5)
- A waste-compacting machine, in which wastes are compressed in a cylinder (16) perforated with a plurality of radial holes (18), a fluid fraction of the wastes being drained trough the holes, characterized in that the cylinder is lined with a lining comprising several cylindrical sectors (44a, 44b, 44c) moulded in manganese steel, the respective sectors having outer surfaces ground to match the inner surface of the cylinder, longitudinal edges (B) ground flat to abut with the edges of adjacent sectors, and moulded radial holes (45) in alignment with the holes (18) of the cylinder (16).
- The machine of claim 1, characterized in that said lining consists of three cylinder sectors.
- The machine of claim 2, characterized in that said three cylinder sectors (44a, 44b, 44c) each substantially have an angular extension of 120°.
- The machine of any of claims 1 to 3, characterized in that at least one of the sectors and the cylinders are provided with centering means adapted to cooperate with each other to lock against mutual rotation between the lining and the cylinder.
- The machine of claim 4, characterized in that said centering means comprise a centering screw (46) engaging one hole in the cylinder and a corresponding, aligned hole in one of the sectors.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITTO20040109 | 2004-02-26 | ||
ITTO20040109 ITTO20040109A1 (en) | 2004-02-26 | 2004-02-26 | WASTE COMPACTING MACHINE |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1568478A1 EP1568478A1 (en) | 2005-08-31 |
EP1568478B1 true EP1568478B1 (en) | 2012-12-12 |
Family
ID=34746737
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20050003863 Active EP1568478B1 (en) | 2004-02-26 | 2005-02-23 | Waste-compacting machine |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1568478B1 (en) |
IT (1) | ITTO20040109A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10774470B2 (en) | 2017-01-12 | 2020-09-15 | Anaergia Inc. | Process to recover a portion of post-recycling municipal solid waste |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202007007038U1 (en) * | 2007-05-14 | 2007-10-25 | Pallmann Maschinenfabrik Gmbh & Co Kg | Device for dewatering pourable or pourable feed material by compaction |
WO2011036301A1 (en) * | 2009-09-28 | 2011-03-31 | Few Separator Gmbh | Screen attachment assembly for a worm press separator and worm press separator comprising a screen attachment assembly of this type |
ITTO20111068A1 (en) * | 2011-11-21 | 2013-05-22 | Vm Press Srl | MATERIAL HANDLING MACHINE WITH WET ORGANIC CONTENT |
ITTO20120456A1 (en) * | 2012-05-25 | 2013-11-26 | Vm Press Srl | PROCESS FOR THE PRODUCTION OF COMBUSTIBLE GAS FROM URBAN SOLID WASTE. |
WO2015003273A1 (en) | 2013-07-11 | 2015-01-15 | Anaergia Inc. | Anaerobic digestion and pyrolysis system |
US11180391B2 (en) | 2013-10-02 | 2021-11-23 | Anaergia B.V. | Method and device for processing solid waste |
NL1040425C2 (en) | 2013-10-02 | 2015-04-07 | Technologies Holding B V D | METHOD AND DEVICE FOR SEPARATING LIGHER PARTICLES AND HEAVIER PARTICLES |
NL1040442C2 (en) | 2013-10-13 | 2015-04-14 | Technologies Holding B V D | DEVICE AND METHOD FOR PRESSING ORGANIC MATERIAL FROM WASTE. |
WO2016123714A1 (en) | 2015-02-06 | 2016-08-11 | Anaergia Inc. | Solid waste treatment with conversion to gas and anaerobic digestion |
US9879285B2 (en) | 2015-07-20 | 2018-01-30 | Anaergia Inc. | Production of biogas from organic materials |
EP3370889B1 (en) | 2015-11-02 | 2020-04-08 | Anaergia B.V. | Method and device for processing solid waste |
ZA201602521B (en) | 2016-03-18 | 2018-07-25 | Anaergia Inc | Solid waste processing wih pyrolysis of cellulosic waste |
EP3429767A1 (en) | 2016-03-18 | 2019-01-23 | Anaergia B.V. | Door for solid waste press |
EP3429838B1 (en) | 2016-03-18 | 2024-05-01 | Anaergia B.V. | Press ram fastening system |
AT518983B1 (en) * | 2016-12-02 | 2018-03-15 | Andritz Ag Maschf | DEVICE FOR WASHING DEEP-WATERED OR FLUIDABLE SUPPLY MATERIAL |
GB2561018B (en) | 2017-03-27 | 2021-09-08 | Anaergia Inc | Process for recovering organics from material recovery facility fines |
SG11202008031PA (en) | 2018-02-22 | 2020-09-29 | Anaergia Inc | Anaerobic digestion of organic fraction of solid waste with high quality digestate |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1916347A (en) * | 1930-05-30 | 1933-07-04 | Charles B Upton | Press cage |
GB1385029A (en) * | 1971-11-23 | 1975-02-26 | Coopers Metals Ltd | Briquetting presses |
DE3209613A1 (en) * | 1982-03-17 | 1983-09-29 | Licencia Találmányokat Ertékesítö Vállalat, 1051 Budapest | Worm press according to the modular concept |
FR2615443A1 (en) | 1987-05-22 | 1988-11-25 | Fives Cail Babcock | Refuse press |
FR2671514A1 (en) * | 1991-01-10 | 1992-07-17 | Neyrpic Framatome Mecanique | PRESS FOR COMPACTING AND PROCESSING WASTE. |
WO1992013710A1 (en) | 1991-02-12 | 1992-08-20 | Andritz Sprout-Bauer, Inc. | Adjustable compression screw device and components |
EP0684117A1 (en) * | 1994-05-25 | 1995-11-29 | TECNOECO S.r.l. | Machine for processing moisture-containing material, particularly for recycling municipal solid waste |
KR0145510B1 (en) * | 1994-11-28 | 1998-07-15 | 김영대 | Apparatus for washing screw filter press for dlwatering |
FR2792570B1 (en) * | 1999-04-26 | 2001-07-13 | Pierre Dumons | PRESS FOR THE TREATMENT OF PARTS, IN PARTICULAR WASTE OR GARBAGE, COMPRISING A FRACTION OF MATERIAL LIKELY TO FLUUE UNDER PRESSURE |
-
2004
- 2004-02-26 IT ITTO20040109 patent/ITTO20040109A1/en unknown
-
2005
- 2005-02-23 EP EP20050003863 patent/EP1568478B1/en active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10774470B2 (en) | 2017-01-12 | 2020-09-15 | Anaergia Inc. | Process to recover a portion of post-recycling municipal solid waste |
US11898308B2 (en) | 2017-01-12 | 2024-02-13 | Anaergia Inc. | Process to recover a portion of post-recycling municipal solid waste |
Also Published As
Publication number | Publication date |
---|---|
ITTO20040109A1 (en) | 2004-05-26 |
EP1568478A1 (en) | 2005-08-31 |
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