EP1348816B1 - Abfallentsorgungsvorrichtung und Verfahren zur Abfallentsorgung - Google Patents

Abfallentsorgungsvorrichtung und Verfahren zur Abfallentsorgung Download PDF

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Publication number
EP1348816B1
EP1348816B1 EP03251347A EP03251347A EP1348816B1 EP 1348816 B1 EP1348816 B1 EP 1348816B1 EP 03251347 A EP03251347 A EP 03251347A EP 03251347 A EP03251347 A EP 03251347A EP 1348816 B1 EP1348816 B1 EP 1348816B1
Authority
EP
European Patent Office
Prior art keywords
water
macerator
drive
waste
controller
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.)
Expired - Lifetime
Application number
EP03251347A
Other languages
English (en)
French (fr)
Other versions
EP1348816A1 (de
Inventor
Nigel R. C. Shepherd
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.)
Haigh Engineering Co Ltd
Original Assignee
Haigh Engineering Co Ltd
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 Haigh Engineering Co Ltd filed Critical Haigh Engineering Co Ltd
Publication of EP1348816A1 publication Critical patent/EP1348816A1/de
Application granted granted Critical
Publication of EP1348816B1 publication Critical patent/EP1348816B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/0084—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating garbage, waste or sewage
    • B02C18/0092—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating garbage, waste or sewage for waste water or for garbage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C25/00—Control arrangements specially adapted for crushing or disintegrating

Definitions

  • This invention relates to waste disposal apparatus and in particular to such apparatus which includes a macerator.
  • One known waste disposal apparatus has a macerating chamber with a drain valve at the bottom of the chamber and a macerator. Waste is introduced into the chamber, the chamber filled with water to a predetermined level and the macerator switched on until the pulp product has disintegrated. The macerator is then switched off and the drain valve is opened to evacuate the chambers. Additional water may be introduced to clean the chamber.
  • Another known type of such an apparatus includes a macerating chamber having a waste inlet for the introduction of waste material, a waste outlet for the removal of macerated waste material, a macerator and a water inlet, a water pump coupled to the water inlet; an electric motor for driving both the water pump and the macerator and a controller arranged to control the motor.
  • Waste products such as soiled, pulp products, (bedpans/urinals), incontinence pads or food waste are introduced into the macerator chamber through the waste inlet. They are then mixed with water which is pumped into the chamber as the macerator operates, the macerated waste exiting the chamber through the waste outlet.
  • the apparatus disintegrates or pulps the pulp products to produce an effluent of particulate matter in a water suspension which can be disposed of through a sewerage system.
  • the present invention seeks to provide a waste disposal unit which can perform the maceration and cleaning cycle more quickly.
  • US-A-4,275,848 is prior art to this application.
  • WO93/17191 discloses an apparatus according to the preamble of claim 1.
  • the present invention is characterized by the features of the characterizing portion of claim 1, that is in which the controller is arranged to stop the water flow and restart the water flow while the macerator drive is driving the macerator.
  • the pump cannot act to slow the macerator down as is the case in the earlier described prior art apparatus in which one motor ran the pump and macerator.
  • the result is the same macerator takes 15 seconds rather than 3 seconds to come to a stop.
  • the provision of the independent control allows the water flow to be switched off and restarted allowing earlier removal of most of the waste from macerator chamber resulting in a significant decrease in the total time required for the disposal cycle.
  • the present invention is a method of using a waste disposal apparatus comprising a macerating chamber having a waste inlet for the introduction of waste material, a waste outlet for the removal of macerated waste material, a macerator, a water inlet, a water flow control device for controlling the flow of water to the water inlet, a macerator drive for driving the macerator; and a controller arranged to control independently the macerator drive and the water flow control device, the method comprising, in sequence:
  • a waste disposal apparatus 2 includes a macerating chamber 4 of generally cylindrical form.
  • the top of the macerating chamber 4 has a circular opening 6 closable by a hinged lid 8 which opening provides a waste inlet to the chamber 4.
  • a water inlet 10 in the form of a water spray is sealed to an opening through the lid 8 so as to be centrally positioned in the chamber 4 when the lid 8 is in the closed position.
  • the macerator 18 At the bottom of the macerating chamber 4 is a helical gulley 12 leading to a waste outlet 14.
  • the gulley 12 surrounds a generally upwardly convex base 16 on which a macerator 18 is rotatably mounted.
  • the macerator 18 includes a conical plate 20 which has outwardly and upwardly extending macerator blades (impeller blades) 22 fixed to its outer rim 24.
  • the macerator 18 is removable from the macerator chamber 4 through the opening 6 for maintenance or replacement.
  • a water pump 26 has an inlet 27 coupled to a water supply pipe 28 from a water cistern 30 which is filled with water to a preset level via a mains water supply 32, via a solenoid valve 34 and pipe 36.
  • the solenoid valve 34 is controlled by a level switch 38 mounted inside the cistern 30.
  • the water pump 26 has an outlet 40 coupled by a pipe 42 to the water spray 10.
  • the water pump 26 is mechanically coupled to an electric motor 48 constituting the water pump drive.
  • the macerator 18 is mechanically coupled to an electric motor 50, constituting the macerator drive, for rotating the macerator 18.
  • the waste outlet 14 is coupled to a p-trap 52 in turn coupled to drain pipe work (not shown).
  • the lid is mounted on a lid arm 54 hinged at a hinge 56 to a frame 58 to which the waste disposal apparatus components are mounted and can be locked in the illustrated closed position by a solenoid controlled locking mechanism 60 which holds a manually releasible latch 62 in a locked position when actuated.
  • the frame 58 also defines a control box enclosure 62 in which are housed a controller printed circuit board and relays shown generally as 64.
  • a handle is fixed to the water spray 10 for use in lifting the lid 8.
  • a front panel 68 is removably attached to the frame 58 to provide access to the interior of the frame 58 and components of the waste disposal apparatus 2.
  • a forward facing face 70 of the control box enclosure 62 includes a panel 72 of control buttons including a start button 74 for initiating a disposal cycle and operation and fault indicator lights.
  • the lid 8 is lifted and the pulp products to be disposed of are dropped into the macerator chamber 4.
  • the lid 8 is closed and automatically latched in the closed position by latch 62.
  • the apparatus is now ready to start the disposal cycle which in this exemplary embodiment is as follows (with paragraph letters indicating the position of the operation timing chart of Figure 4).
  • timing sequences will be varied to suit the particular design of apparatus components.
  • an apparatus with a larger chamber and macerator may require a longer second cleaning period to allow the macerator to slow to a stop at the end of the cycle.
  • Suitable values can be readily determined by straightforward trial and error.
  • a slightly longer cleaning and slow down period could result in the timing points A, B, C, D, E, F and G of Figure 4 being instead 1, 2, 50, 60, 68, 83 and 88 seconds after start time 0.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Paper (AREA)
  • Processing Of Solid Wastes (AREA)
  • Refuse Collection And Transfer (AREA)

Claims (10)

  1. Abfallentsorgungsvorrichtung mit:
    einer Mazerationskammer (4), die einen Abfalleinlass (6) für die Einführung von Abfallmaterial, einen Abfallauslass (14) für die Beseitigung von mazeriertem Abfallmaterial, einen Mazerator (18) und einen Wassereinlass (10) umfasst; einer Wasserstrom-Steuervorrichtung (34) zum Steuern des Wasserstroms in den Wassereinlass; einem Mazeratorantrieb (50) zum Antreiben des Mazerators; und einem Regler (64) zur unabhängigen Regelung des Mazeratorantriebes (50) und der Wasserstrom-Steuervorrichtung (34), wobei die Vorrichtung dadurch gekennzeichnet ist, dass der Regler derart ausgebildet ist, dass der Wasserstrom angehalten und neu gestartet wird, während der Mazeratorantrieb (50) den Mazerator (18) antreibt.
  2. Vorrichtung nach Anspruch 1, in der die Wasserstrom-Steuervorrichtung ein Ventil (34) zum Steuern des Wasserstroms in den Wassereinlass (10) ist.
  3. Vorrichtung nach Anspruch 1, in der die Wasserstrom-Steuervorrichtung ein mit einer Wasserpumpe (26) gekoppelter Wasserpumpenantrieb (48) ist, und diese in Fluidverbindung mit dem Wassereinlass (10) steht.
  4. Vorrichtung nach Anspruch 3, die einen Starter (74) zum Einleiten des Entsorgungszyklusses enthält, der von einem Bediener der Vorrichtung bedienbar ist, wobei der Regler (64) die Bedienung des Starters (74) erfasst.
  5. Vorrichtung nach Anspruch 4, in der der Regler (64) derart ausgebildet ist, dass der Regler nach der Erfassung des Betriebs des Starters (74) den Wasserpumpenantrieb (48) und den Mazeratorantrieb (50) anschaltet.
  6. Vorrichtung nach Anspruch 5, in der der Regler (64) den Mazeratorantrieb (50) eine vorbestimmte Zeit nach dem Anschalten des Wasserpumpenantriebs (48) anschaltet.
  7. Vorrichtung nach Anspruch 6, in der der Regler (64) derart ausgebildet ist, dass er den Wasserpumpenantrieb (48) nur nach einer zweiten vorbestimmten Zeit nach Anschalten des Wasserpumpenantriebs abschaltet, und der Regler (64) derart ausgebildet ist, dass der Regler optional den Wasserpumpenantrieb (48) nach einer dritten vorbestimmten Zeit nach Abschalten des Wasserpumpenantriebs (48) erneut anschaltet, wobei in diesem Fall der Regler (64) derart ausgebildet ist, dass der Regler ferner optional den Mazeratorantrieb (50) eine vierte vorbestimmte Zeit, nachdem der Wasserpumpenantrieb (48) erneut angeschaltet wurde, anschaltet, und des Weiteren in diesem Fall der Regler (64) derart ausgebildet ist, dass er optional den Wasserpumpenantrieb (48) eine fünfte vorbestimmte Zeit, nachdem der Mazeratorantrieb (50) abgeschaltet wurde, abschaltet.
  8. Vorrichtung nach einem der vorhergehenden Ansprüche, bei der der Abfalleinlass (6) durch einen Deckel (8) verschließbar ist, der unter der Kontrolle des Reglers (64) verriegel- und entriegelbar ist, und optional der Regler (64) derart ausgebildet ist, dass der Regler den Deckel (8) vor der Einleitung eines Entsorgungszyklusses verriegelt und den Deckel (8) eine vorbestimmte Zeit, nachdem der Wasserpumpenantrieb (48) und der Mazeratorantrieb (50) am Ende des Entsorgungszyklusses abgeschaltet wurden, entriegelt
  9. Verfahren zur Verwendung einer Abfallentsorgungsvorrichtung mit einer Mazerationskammer, die einen Abfalleinlass (6) für die Einführung von Abfallmaterial, einen Abfallauslass (14) für die Beseitigung des mazerierten Abfallmaterials, einen Mazerator (18) und einen Wassereinlass (10) aufweist, einer Wasserstrom-Steuervorrichtung (34) zum Steuern des Wasserstroms in den Wassereinlass (10); einem Mazeratorantrieb (50) zum Antreiben des Mazerators; und einem Regler, der derart ausgebildet ist, dass der Regler den Mazeratorantrieb (50) und die Wasserstrom-Steuervorrichtung (34) unabhängig voneinander steuert, wobei das Verfahren in Folge aufweist:
    a) Anschalten des Wasserstroms in den Wassereinlass (10) und des Mazeratorantriebs (50), um eine Mazeration des Abfallprodukts im Wasser einzuleiten;
    b) Abschalten des Wasserstroms in den Wassereinlass (10) für eine vorbestimmte Zeitspanne;
    c) erneutes Anschalten des Wasserstroms in den Wassereinlass (10) für eine weitere vorbestimmte Zeit; und
    d) Abschalten des Wasserstroms in den Wassereinlass (10) und des Mazeratorantriebs (50).
  10. Verfahren nach Anspruch 9, bei dem irgendeine oder jede der folgenden Kombination auftritt:
    I. die Wasserstrom-Steuervorrichtung ist ein mit einer Wasserpumpe (26) gekoppelter Wasserpumpenantrieb (48);
    II. bei Schritt a) wird der Mazeratorantrieb (50) angeschaltet, nachdem der Wasserpumpenantrieb (48) angeschaltet ist;
    III. bei Schritt d) wird der Mazeratorantrieb (50) abgeschaltet, bevor der Wasserpumpenantrieb (48) abgeschaltet ist; und
    IV. die Vorrichtung umfasst einen Deckel (8), der in einer geschlossenen Position verriegelbar ist, um den Abfalleinlass (6) zu schließen, und bei der der Deckel (8) in der geschlossenen Position vor oder bei dem Start von Schritt a) verriegelt und bei Schritt d) entriegelt wird.
EP03251347A 2002-03-22 2003-03-06 Abfallentsorgungsvorrichtung und Verfahren zur Abfallentsorgung Expired - Lifetime EP1348816B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0206868.2A GB0206868D0 (en) 2002-03-22 2002-03-22 Waste disposal apparatus and method of waste disposal
GB0206868 2002-03-22

Publications (2)

Publication Number Publication Date
EP1348816A1 EP1348816A1 (de) 2003-10-01
EP1348816B1 true EP1348816B1 (de) 2004-05-26

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EP03251347A Expired - Lifetime EP1348816B1 (de) 2002-03-22 2003-03-06 Abfallentsorgungsvorrichtung und Verfahren zur Abfallentsorgung

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EP (1) EP1348816B1 (de)
AT (1) ATE267927T1 (de)
DE (1) DE60300003T2 (de)
GB (1) GB0206868D0 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009060187A3 (en) * 2007-11-06 2009-07-30 Ddc Dolphin Ltd A macerator

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITCR20110014A1 (it) * 2011-11-14 2013-05-15 Marinella Cortellini Dispositivo di movimentazione per un portello di macchine per triturare oggetti medicali monouso di carta
US20170239667A1 (en) 2014-09-29 2017-08-24 OPP Sp. z.o.o. Macerator for utilisation of hospital waste, in particular cellulose pulp
GB2533643B (en) * 2014-12-24 2017-05-24 Ddc Dolphin Ltd Apparatus for handling contaminated products

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4275848A (en) * 1979-10-04 1981-06-30 Webb Sr Alexander Portable garbage disposal unit
US4373676A (en) * 1980-11-24 1983-02-15 Salvajor Company Waste food disposal system
US4739525A (en) * 1985-06-11 1988-04-26 American Standard, Inc. Self-contained toilet system
US5123124A (en) * 1989-11-02 1992-06-23 Richard Brower Automatic, self-cleaning, water saving, toilet system
SE9200492L (sv) * 1992-02-19 1993-08-16 Kalmar Maskinprojekt Ab Spolningsfoerfarande och anordning vid vattentoalett med soenderdelande transportpump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009060187A3 (en) * 2007-11-06 2009-07-30 Ddc Dolphin Ltd A macerator
EP2207622B1 (de) 2007-11-06 2015-09-09 DDC Dolphin Limited Zerkleinerer

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Publication number Publication date
DE60300003T2 (de) 2004-11-25
EP1348816A1 (de) 2003-10-01
GB0206868D0 (en) 2002-05-01
DE60300003D1 (de) 2004-07-01
ATE267927T1 (de) 2004-06-15

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