EP2207622B1 - Zerkleinerer - Google Patents

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Publication number
EP2207622B1
EP2207622B1 EP08846476.3A EP08846476A EP2207622B1 EP 2207622 B1 EP2207622 B1 EP 2207622B1 EP 08846476 A EP08846476 A EP 08846476A EP 2207622 B1 EP2207622 B1 EP 2207622B1
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EP
European Patent Office
Prior art keywords
lid
macerator
chamber
water
control system
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
Application number
EP08846476.3A
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English (en)
French (fr)
Other versions
EP2207622A2 (de
EP2207622B2 (de
Inventor
Martin Douglas Priest
John William Needham
David John Sewell
Andrew Mctaggart
Gregory James Pochin
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.)
DDC Dolphin Ltd
Original Assignee
DDC Dolphin Ltd
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Publication date
Family has litigation
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Application filed by DDC Dolphin Ltd filed Critical DDC Dolphin Ltd
Priority to PL08846476T priority Critical patent/PL2207622T5/pl
Publication of EP2207622A2 publication Critical patent/EP2207622A2/de
Publication of EP2207622B1 publication Critical patent/EP2207622B1/de
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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
    • B02C19/00—Other disintegrating devices or methods
    • B02C19/0056—Other disintegrating devices or methods specially adapted for specific materials not otherwise provided for
    • B02C19/0075—Other disintegrating devices or methods specially adapted for specific materials not otherwise provided for specially adapted for disintegrating medical waste
    • 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
    • B02C23/04—Safety devices
    • 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
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • B02C2018/168—User safety devices or measures in shredders

Definitions

  • the present invention relates to a macerator, of the type used for disposal of assorted pulped products, such as paper, cardboard, pulped paper or similar fibrous or starch-based products and human waste. More particularly, but not exclusively, the invention relates to hygienically operated macerators for reducing human waste and paper pulp waste collectors or similar items.
  • waste disposal facilities are required in situations that do not permit the use of the traditional types of toilet. Often large sewage pipes are not practical. In other situations disposal of larger or denser items is required. This may be in location such as sluicerooms in hospitals or care homes, where there is predominance of bedridden or geriatric patients, or in temporary, or off-shore environments, such as ships.
  • the facility would ideally allow complete and simple use without contact.
  • the process should be as quick as possible, freeing up more time for patient care.
  • the unit should not be noisy or disruptive of a local environment typically containing sensitive persons.
  • a previously known macerator had a drain valve located at the bottom of a chamber containing a waste grinder, which was offset so that ground waste product flowed towards the drain.
  • Previous devices mixed the waste product with water to produce an effluent that was drained through the sewage system.
  • water was typically fed continuously into a macerating chamber as the macerator motor continuously operated.
  • Typical such devices took the form of a cylindrical chamber having a chopping mechanism arranged at the bottom, typically on the perimeters of a disc or in a concentric or annular arrangement to allow progressive reduction until the small particles were of sufficient size to allow discharge.
  • Such devices were sometimes resource inefficient - often requiring several litres of water in a cycle - and in addition may have permitted elongate particles to pass through to a waste pipe with the risk of blocking the pipe or drain.
  • European Patent EP 0 347 205 B1 discloses a macerator for reducing fibrous products, comprising a housing and agitating means rotatably mounted within the housing for reducing the products.
  • the macerator worked by relying on high hydraulic shear forces between the agitating blade and the internal wall of the housing on liquid within the housing. The drain valve was then opened and additional water was used to rinse the chamber.
  • EP-B1-1 348 816 describes a waste disposal apparatus which includes a macerating chamber, water inlet and waste outlet, and a first and second drive arranged to independently drive a water pump and macerator and to interrupt the water flow while the macerator drive is driving the macerator.
  • the apparatus described includes: a control system to restrain the flow of water into the chamber.
  • flow of water was interrupted after a predetermined interval to allow macerated waste to drain away, before reintroduction of water into the chamber and in preference to continuing to sluice the largely emptied chamber.
  • UK Patent Application_ GB-A-2 445 036 (Vernacare Limited), which has an earlier filing date than the present Application and was published on 25 June 2008, describes and claims a macerator with a housing, an opening, a releasably securable closure and a contactless switch for controlling a function of the macerator.
  • the preferred embodiment of the contactless switch is a foot-controlled infra-red switch, which is described as reducing cross infection as this removes the need for the user to operate the contactless switch without the use of hands.
  • the prior art thus discloses devices that provide varying methods of macerating or disintegrating assorted waste with relative speed, but not necessarily great efficiency of energy or water usage per load.
  • many of the aforementioned devices relied on the use of water to reduce the waste, they were frequently noisy due to the volume in movement of water and waste.
  • all the aforementioned prior art devices were reliant on contact from the user to activate, open or close the macerating chamber.
  • a waste-disposal apparatus is described in GB1421771 which comprises a casing with a top inlet and bottom outlet, including a closure with a plurality of nozzles (preferably three) arranged to deliver a cleansing flow of water to the entire inner surface of the closure and casing.
  • a switch and a master switch energise the motor and preferably a pump.
  • the closure includes a positive looking handle which is interlocked with switch.
  • a comminuting apparatus is described in GB1209766 , particularly for disposable bed pans, and comprises a vat and a rotor by which jets of water are delivered through upwardly and outwardly directed holes so as to break down the material in the vats.
  • a pump supplies water via a tube to the base of a groove to force a seal tightly against the vat and secure the lid.
  • the lid is pedal operated, and has a microswitch in the motor starter circuit to prevent operation until the lid is closed.
  • Disposal equipment for infectious or otherwise contaminated waste is described in US4883189 , to be used for instance in hospitals, doctors' offices, laboratories and similar institutions.
  • the waste is disposed of in a container placed on a support.
  • the container When the container is full, it is closed tight by means of the lid provided.
  • the release-ready lid is held on the support by means of the rotating lid holder which is actuated by the motorized drive.
  • the opening and closing of the container is provided by the lid holder, and during the filling phase the lid is closed down loosely on the container.
  • another drive linked to the equipment closes the lid holder with the lid down tight onto the container, and the lid connected to the container is then released.
  • a trash can assembly is described in EP1700799 which has an outer shell, a lid pivotably coupled to the top end of the outer shell, a sensor positioned inside a covered region defined by the outer shell, and a lid control system coupling the sensor and the lid.
  • the lid control system opens and closes the lid when the sensor is actuated.
  • a macerator comprising: a chamber and lid, which together in use define a sealed volume for receiving items to be macerated; a chopper which is located in the chamber; an inlet for water; and a drain for removal of macerated product characterised in that means is provided for closing the lid to the chamber using a non-contact control system.
  • the opening means includes a foot switch which when activated by a users foot triggers the release mechanism on the macerator so as to open the lid.
  • a macerator comprising: a chamber and lid, which together in use define a sealed volume for receiving items to be macerated; a chopper which is located in the chamber; an inlet for water; and a drain for removal of macerated product, characterised in that a foot operated non-contact control system is provided for closing the lid to the chamber.
  • the non-contact control system includes a proximity sensor, such as a capacitive sensor or an infra red (IR) sensor for detecting a user or operators hand or foot.
  • a proximity sensor such as a capacitive sensor or an infra red (IR) sensor for detecting a user or operators hand or foot.
  • the IR proximity sensor is ideally positioned so that it is at the rear of the macerator, typically on a control panel and facing towards the front of the macerator.
  • the IR sensor ideally has a relatively narrow operating range of between 0.05m and 0.2m so that lid closure is a deliberate action and is not inadvertently triggered by a casual bystander.
  • a logic circuit may be included and configured to close the lid on receipt of a specific pattern or sequence of signals, for example a user may have to wave their hand across the sensor a predetermined number of times and/or confirm a command signal and/or maintain their hand in a preferred vicinity for a given time interval. It will be appreciated that the specific pattern or sequence of signals for controlling closure of the lid may be varied.
  • Sensors are arranged to detect closure of the lid and to lock the lid into position. Ideally solenoid bolts, or alternatively reed switches, are triggered as soon as a lid closure signal is detected by the sensors.
  • the non-contact control system may include a voice recognition system, which is capable of identifying a user's voice; or some other feature, such as an iris and/or an audible control signal, for example, 'close lid'.
  • the non-contact control system may be adapted to read an optical badge, for example worn by a user or adapted to respond to a short range radio frequency (RF) identity (ID) tag.
  • RF radio frequency
  • the non-contact control system is configured to operate on command of a control signal is that it enables a user to close the lid of the macerator without contacting any switch or part of the machine with their hands, thereby reducing the risk of cross infection and maintaining the macerator in as clean as state as possible.
  • An advantage with this is that the improved macerator reduces the risk of leaving any soiled substances or contaminants in contact with the closing switch, which would otherwise have been able to be touched by a subsequent user or users and which might have led to possible cross infection, for example to a different ward.
  • an opening mechanism is provided for enabling the lid of the chamber to be opened without contact by a user's hand.
  • Such an opening mechanism is ideally a foot pedal and permits opening of the lid, for example whilst a user is carrying a stack of soiled items for maceration.
  • the opening mechanisms may also be operated by way of a similar remote switch such as, for example, an IR or other optical switch; it being appreciated that the lid will only be permitted to open once the macerator has concluded the cleaning cycle.
  • a similar remote switch such as, for example, an IR or other optical switch
  • At least one safety lock ensures lid opening is only possible when the machine has completed the cycle and stopped.
  • a safety interval of between a few seconds and one or two minutes may be set, after which safety interval, the lid opens.
  • an override may be provide, which is typically located at the rear of the macerator, which permits an operator or maintenance engineer to open the lid in the event of a fault or lid jamming.
  • a method of macerating a pulp paper product comprising the steps of: introducing the product into a chamber; sealing the chamber with a lid; chopping the product for a predetermined period of time using a rotating blade when at least part of the product is in substantially dry state; introducing a predetermined volume of water, whilst the chopper continues to chop the product; and draining the chopped waste product from the chamber whilst the water supply continues to rinse the chamber.
  • the initial chopping interval is less than 30 seconds and ideally less than 20 seconds and preferably around 10 seconds in duration.
  • This initial period of chopping - herein referred to as 'dry chopping - typically takes places using a chopper speed of around 1000 to 1500 revolutions per minute (RPM).
  • the chamber volume is typically at least 0.25 m 3 and is capable of . receiving up to eight soiled waste pulp products.
  • less than 20 litres of water are introduced.
  • the improved maceration cycle is faster and requires less water because of the initial 'dry' chopping process, which disintegrates paper/pulped product into relatively small fragments, thereby greatly increasing the surface area available for absorbing water.
  • This initial 'dry' chopping phase is therefore considered important for the rapid absorption of water.
  • the rotating chopper At or near to the end of the cycle the rotating chopper ideally is switched off and further introduction of water serves simply to rinse out the inner surface of the drum or chamber.
  • an optional disinfectant and/or air freshener may also be introduced.
  • first and second implementations may be combined into a single macerator in which both implementations are present.
  • an improved chopping blade for use in a macerator comprising: three primary blades and three secondary blades, the axis of each blade lying in a plane and being disposed at substantially 60° one to another, whereby primary and secondary blades are arranged in alternating fashion one to another.
  • the length of the primary blade is between 5 - 25cm and the secondary blade is between 1 - 7cm. While preferably the length of the primary blade is between 10 - 15 cm and the length of the secondary blade is between 3 - 6 cm.
  • the widths of the blades are in the range of 2 - 4 cm and more preferably between the range of 1.5 - 2.5cm.
  • the thickness of blades is typically in the range of 0.3 - 0.6cm.
  • the material for the blades is hardened steel or stainless steel with relatively blunt faces and curved tipped regions.
  • the chopper is ideally located centrally within the chamber or drum and supported on a shaft, which is connected directly to a motor exterior to the drum.
  • the motor is arranged to operate the blade to a maximum rotational speed of typically 1000-1500 RPM and ideally around 1200 RPM, typically 1425 RPM. This not only achieves energy efficient chopping, but has also been found to achieve faster and quieter results.
  • End or distal portions of the primary blades are advantageously shaped and arranged so as to conform to the interior shape of the drum so as to define a narrow gap, of substantially constant width between the surface of the blade and the surface of the chamber.
  • the blades are arranged with two bends - so as to form an S-shape - whereby a major surface of the blade is substantially parallel with the flat surface of part of the interior of the chamber.
  • the flat surface of part of the interior of the chamber is a portion of a frusto-conical surface angles so as to direct pulped waste and slurry into a drain.
  • the gap between the blade and the chamber is less than 0.5 cm and ideally less than 0.3 cm.
  • the gap has been found to be ideal as if it is too large, pulp product sticks to the underside of the blade and tends to "ball"; and if the gap is too small, there is insufficient shear force generated between the product to be pulped and the wall of the chamber.
  • the chopper is the fact that it has two sets of blades: a first set of relatively short blades and a second set of longer blades. Short and long blades alternate and are disposed in a symmetric manner.
  • An advantage of the preferred arrangement of blades is that they promote very efficient, 'dry' chopping - that is chopping prior to introduction of water.
  • the chopping cycle is not only highly efficient but relatively quiet.
  • the noise levels are below 60 dB and ideally less than 50 dB.
  • the chamber or drum has a sump region whose volume is typically 3 - 5 litres and in which the blade is located at a distance of approximately 9.0 cm from the base of the sump. This distance ensures there is clearance between the blade and the drum so as to prevent any build up of debris which may otherwise jam or inhibit rotation of the chopper.
  • Suitable sensors are located on the rotator shaft to determine the amount of rotor torque that is required and to isolate power to the motor in the event of a stall. In the event of a stall such sensors may be arranged to reverse the sense of rotation of the motor so as to remove debris and free rotation of the motor.
  • the fourth implementation may be used in conjunction with the first and/or second and/or third implementations and combined into a single macerator.
  • a macerator control system for determining a particular duty cycle, wherein a menu of alternative cycles is provided for varying: chopping speed and/or chopping duration prior to introduction of water and/or amount of water to be introduced and/or instant when drain is opened, characterised in that the menu is in the form of a look-up table and operates under control of software.
  • This feature permits a single type of macerator to be configured for use in a wide variety of applications, for example in conditions where there is a large volume of heavily soiled pulp products to ones where there is a smaller amount of lightly soiled products:
  • this feature provides the flexibility to an operator of selecting different pulping times and to vary the amount of water that is used in a cycle. Certain minimum limits may be imposed so as to ensure that products have been pulped to a sufficiently small size and that a minimum volumes of water are introduced into the chamber so as to enable it to be flushed properly.
  • Macerator 10 is in the form of a generally parallel piped shaped cabinet whose dimensions are approximately 0.5 - 0.7m (width), 0.5-0.8m (depth) and 0.8-1.1m (height).
  • the cabinet 10 is typically floor mounted on four rubber feet or supports 12.
  • Macerator 10 requires a water supply 14 (usually only cold), a sewage drain 16, and an electrical supply 17 (single phase or 3-phase).
  • a hinged lid 18 closes to seal an inner drum 20. In use the lid 18 opened by a foot switch, pedal or kick plate 22. This enables a user, who is typically carrying one or more soiled bedpans or pads for maceration, to open the lid without the need to place the aforementioned soiled items on a work surface, or any part of the macerator 10, thus ensuring a hygienic disposal.
  • the lid 18 shown in detail in Figures 3a to 3f , is closed and locked by two lock or throw bolts 24a and 24b, which operate under control of solenoids 26a and 26b (shown in detail in Figure 4 ) respectively in a failsafe manner.
  • the failsafe mechanism ensures that in the event of a power failure, interruption in electricity 17 or water 14 supply the throw bolts maintain lid 18 in a locked state.
  • Chopper 28 is supported in a substantially central location at the lower region of drum and supported by sealed bearing 34.
  • Chopper 28 comprises a multisided blade device, which ideally has three relatively long blade portions 36a, 36b and 36c, and three relatively short of stubby blade portions 38a, 38b and 38c. Long blade portions are disposed intermediate short blade portions in a star configuration at substantially 60° one to another.
  • FIG. 2 a logic diagram illustrates a series of questions/decisions and states which control the operation and safety features of macerator 10.
  • FIG. 2 is a flow diagram showing key decisions
  • the macerator 10 is operated with a foot switch to open lid.
  • An LED indicates 'power on' status.
  • the macerator 10 may then be loaded with typically up to 8 pulp products.
  • To close the lid 18 a user moves a hand over a proximity sensor which includes IR detector 44. Once the lid 18 is closed the motor is activated. The machine checks the load on the motor and if there is a problem indicator F3 will flash on the display. This fault code signifies a prompt to remove an obstruction, for example a trapped item in the lid. Provided there are no obstructions two shoot bolts 24 are fired to lock the lid 18 and an LED indicates that the maceration cycle commences.
  • the motor for dry chopping is then started. Subsequently after an interval of approximately 10 seconds water pump 70 is switched on. This fills the chamber 20 with water for 70 seconds. Dosing fluid, such as detergent or disinfectant, may then be added and the peristaltic pump is started. The time period defined for this is 3 - 30 seconds.
  • a first is embedded in software and may be reset, for example by a service engineer to alert the time for the next service; and the second keeps a tally of the absolute number of cycles:
  • the system counter in software requires re-setting at servicing to the next service interval; the absolute cycle counter cannot be altered.
  • the unit runs a continuous fault check loop whereby for example if a pressure sensor is activated fault code F1 flashes on display, the drains are cleared and the unit is restarted. If the water tank is not filling during the cycle the fault code F5 flashes. If the power is interrupted during the cycle the fault code F6 flashes. If the lid is opened during cycle or the motor is turned off, F7 flashes on the display.
  • an operator/user approaches the macerator 10, typically carrying a stack of soiled disposable pad pans (not shown) for hygienic disposal. If lid 18 of macerator 10 is already open the user places the stack, typically up to 8 pulped paper products, into the inner drum 20, having a tapered or part conical lower regions which promotes drainage of pulped matter. Hinged lid 18 is then closed by an automatic closing system described in detailed below with reference to Figures 2 and 6 .
  • an automatic closing system comprises a source of infra red (IR) radiation 42a, an infra red (IR) detector 44, a threshold detection circuit 46, control logic 48 and a relay 50.
  • FIG 6 which shows in use ACS detecting a users hand when waved close to the IR detector 44 as an increase in reflected IR radiation 42b.
  • the threshold detector 46 removes any ambient or incident background IR radiation from a received signal (S) and - in the event that the duplicate of received signal exceeds a pre-defined threshold level (T) - a trigger signal is sent to logic circuit 48.
  • S received signal
  • T pre-defined threshold level
  • T pre-defined threshold level
  • Threshold detection may be varied so as to change the varying angle/viewing cone of detected IR radiation and/or the distance between target (hand 100) and detector and/or the particular frequency of the IR radiation 42a. Variation of these criteria enables a high degree of selectivity to be achieved, thereby ensuring the macerator 10 can be used in a wide range of environments, for example in banks or rows or for example opposite one another, without risk of a false reading or input signal being received.
  • a particular advantage with this aspect of the invention is that it ensures that a user no longer has to contact any part of the macerator 10 in order to switch it on or commence a maceration cycle. This is of special importance with the increased prevalence of cross contamination between patients and wards in hospitals of the bacteria leading to Methicillin Resistant Staphylococcus Aureus (MRSA) and Clostridium difficile (c-difficile), as the person carrying soiled items (nurse auxiliary or cleaner) is typically moving between a number of different places in the hospital or care home.
  • MRSA Methicillin Resistant Staphylococcus Aureus
  • c-difficile Clostridium difficile
  • lid 18 closes under supervision of a lid safety system.
  • Lid safety system 60 included a driver or activator arranged to close the lid 18 on receipt of a signal from auto close system.
  • a pressure sensor which is located so as to sense strain in the driver activator, where the level of strain detected exceeds a particular value, sends a fault signal to the activator, which automatically arrests its motion. This feature ensures that a user does not inadvertently trap a hand or finger, or any other item unintentionally positioned so that it prevents lid 18 from closing.
  • an alarm may sound and/or the driver activator may be controlled to relax or to attempt to close, thereby giving the user a chance to remove the item.
  • paper, cardboard, pulped paper or similar fibrous or starch-based products are intended to include: biodegradable products, disposable hygiene products, female hygiene products, nappies (diapers), incontinence pads, and other sanitary articles for use by incontinent people, incontinence equipment, bedpans and the like, that may formed from vegetable matter or any synthetic, organic or other material that is temporarily liquid impervious, (for example by way of a coating), but capable of being macerated.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Processing Of Solid Wastes (AREA)

Claims (15)

  1. Zerkleinerer (10), der Folgendes umfasst: eine Kammer (20) und einen Deckel (18), die gemeinsam beim Gebrauch ein geschlossenes Volumen zum Aufnehmen von zu zerkleinerndem Gut definieren; einen in der Kammer (20) befindlichen Zerhacker (28); einen Einlass zum Einleiten von Wasser in die Kammer (20); einen Abfluss zum Entfernen von zerkleinertem Produkt aus der Kammer (20); ein Mittel (22) zum Öffnen des Deckels; und ein Deckelverschlusssystem zum Verschließen des Deckels (18), dadurch gekennzeichnet, dass das Deckelverschlusssystem ein kontaktfreies Steuersystem (44, 46, 48) zum Erkennen der Anwesenheit eines Benutzers und zum Aktivieren eines Aktuators beinhaltet, der den Deckel nach Empfang eines Befehlssignals schließt; ein Deckelverriegelungsmittel (24) zum Gewährleisten, dass der Deckel (18) im geschlossenen Zustand verriegelt wird, bevor das Steuersystem (44, 46, 48) einen Zerkleinerungszyklus startet.
  2. Zerkleinerer (10) nach Anspruch 1, dadurch gekennzeichnet, dass wenigstens ein Sensor zum Erkennen des Verschlusses des Deckels (18) und zum Aktivieren des Deckelverriegelungsmittels (24) ausgelegt ist.
  3. Zerkleinerer (10) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass wenigstens ein Sensor zum Erkennen einer Behinderung des Schließens des Deckels (18) vorgesehen ist, wobei der Sensor nach dem Erkennen der Behinderung den Aktutator automatisch arretiert.
  4. Zerkleinerer (10) nach einem vorherigen Anspruch, dadurch gekennzeichnet, dass das kontaktfreie Steuersystem einen Näherungssensor aufweist und der Näherungssensor (44) einen Infrarot-(IR)-Sensor beinhaltet.
  5. Zerkleinerer (10) nach Anspruch 4, dadurch gekennzeichnet, dass der Infrarot-(IR)-Sensor einen Betriebsbereich zwischen 0,05 m und 0,2 m hat, so dass der Deckelverschluss nicht durch eine umstehende Person versehentlich ausgelöst wird.
  6. Zerkleinerer (10) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das kontaktfreie Steuersystem einen Näherungssensor beinhaltet und der Näherungssensor (44) ein Erkennungssystem aufweist, das ein hörbares Steuersignal identifizieren kann.
  7. Zerkleinerer (10) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das kontaktfreie Steuersystem einen Näherungssensor aufweist und der Näherungssensor (44) ein optisches Erkennungssystem aufweist.
  8. Zerkleinerer (10) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das kontaktfreie Steuersystem einen Näherungssensor aufweist und der Näherungssensor (44) einen Kurzstrecken-Funkfrequenz-(RF)-Empfänger zum Empfangen eines Signals von einem RF-Identitäts-(ID)-Etikett beinhaltet.
  9. Zerkleinerer (10) nach einem vorherigen Anspruch, dadurch gekennzeichnet, dass ein Öffnungsmechanismus (22) vorgesehen ist, so dass der Deckel (18) der Kammer (20) mit dem Fuß eines Benutzers geöffnet werden kann.
  10. Zerkleinerer (10) nach einem vorherigen Anspruch, dadurch gekennzeichnet, dass ein Sicherheitslösemechanismus das Öffnen des Deckels (18) nach einem vorbestimmten Intervall nach dem Ende eines Zyklus zulässt.
  11. Zerkleinerer (10) nach einem vorherigen Anspruch, dadurch gekennzeichnet, dass der Zerhacker (28) Folgendes umfasst: drei primäre Schneiden (36a, 36b und 36c) und drei sekundäre Schneiden (38a, 38b und 38c), wobei die Achsen aller Schneiden in einer Ebene liegen und im Wesentlichen 60° zueinander angeordnet sind, so dass die primären (36a, 36b und 36c) und die sekundären (38a, 38b und 38c) Schneiden abwechselnd zueinander angeordnet sind.
  12. Zerkleinerer (10) nach einem vorherigen Anspruch, dadurch gekennzeichnet, dass das Steuersystem (48, 50) einen bestimmten Arbeitszyklus festlegt, dadurch gekennzeichnet, dass ein Menü von alternativen Zyklen bereitgestellt wird, um Folgendes zu variierten: die Zerhackgeschwindigkeit und/oder die Zerhackdauer vor dem Einleiten von Wasser und/oder die Menge an einzuleitendem Wasser und/oder den Zeitpunkt, an dem ein Abfluss geöffnet wird, wobei das Menü in Form einer Lookup-Tabelle vorliegt und beim Betrieb softwaregesteuert arbeitet.
  13. Verfahren zum Zerkleinern eines Papierzellstoffprodukts unter Verwendung des Zerkleinerers (10) nach einem der Ansprüche 1 bis 12, das die folgenden Schritte beinhaltet: Einleiten des Papierprodukts in die Kammer (20); Verschließen der Kammer (20) mit dem Deckel (18); Zerhacken des Papierprodukts für eine vorbestimmte Zeitperiode mit einem drehenden Zerhacker (28), wenn wenigstens ein Teil des Papierprodukts im Wesentlichen im trockenen Zustand ist; gekennzeichnet durch den Schritt des Einleitens eines vorbestimmten Wasservolumens, während der Zerhacker (28) das Papierprodukt weiter zerhackt; und Ablassen des zerhackten Abfallprodukts aus der Kammer (20), während die Wasserzufuhr die Kammer (20) weiter spült.
  14. Verfahren zum Zerkleinern eines Zellstoffprodukts nach Anspruch 13, dadurch gekennzeichnet, dass das anfängliche Zerhackungsintervall kleiner als 30 Sekunden ist.
  15. Verfahren zum Zerkleinern eines Zellstoffprodukts nach Anspruch 13 oder 14, wobei ein Volumen von weniger als 20 Litern Wasser in einem Zyklus benutzt wird.
EP08846476.3A 2007-11-06 2008-11-06 Zerkleinerer Active EP2207622B2 (de)

Priority Applications (1)

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PL08846476T PL2207622T5 (pl) 2007-11-06 2008-11-06 Macerator

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GBGB0721792.0A GB0721792D0 (en) 2007-11-06 2007-11-06 A macerator
PCT/GB2008/003730 WO2009060187A2 (en) 2007-11-06 2008-11-06 A macerator

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EP2207622A2 EP2207622A2 (de) 2010-07-21
EP2207622B1 true EP2207622B1 (de) 2015-09-09
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DK (1) DK2207622T4 (de)
ES (1) ES2554810T5 (de)
GB (1) GB0721792D0 (de)
PL (1) PL2207622T5 (de)
WO (1) WO2009060187A2 (de)

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WO2008142439A2 (en) 2007-05-18 2008-11-27 Vernacare Limited Device for reducing fibrous products
WO2025131548A1 (en) * 2023-12-18 2025-06-26 Ddc Dolphin Ltd Macerator

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ITCR20110015A1 (it) * 2011-11-15 2013-05-16 Marinella Cortellini Macchina per trattare oggetti medicali
GB2516464A (en) * 2013-07-23 2015-01-28 Haigh Eng Co Ltd Macerators
GB2533643B (en) * 2014-12-24 2017-05-24 Ddc Dolphin Ltd Apparatus for handling contaminated products
GB2561171B (en) * 2017-03-31 2020-03-25 Vernacare Ltd Macerator
GB2563822B (en) * 2017-06-12 2022-03-09 The Haigh Eng Company Ltd Macerating method and macerator apparatus
CN110548591A (zh) * 2019-08-16 2019-12-10 中山斯瑞德环保科技有限公司 基于电流变化率的破碎机异常进料控制方法及破碎机
CN112452411A (zh) * 2020-10-24 2021-03-09 张红宾 一种建筑垃圾可循环利用的粉碎装置

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EP1348816B1 (de) 2002-03-22 2004-05-26 The Haigh Engineering Company Ltd Abfallentsorgungsvorrichtung und Verfahren zur Abfallentsorgung
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US4883189A (en) 1986-11-14 1989-11-28 Loebbert Johannes Device for hygienic waste collection in hospitals, laboratories and similar establishments
EP0347205B1 (de) 1988-06-16 1993-12-22 Vernacare Limited Vorrichtung zur Zerkleinerung von faserigen Produkten
EP1348816B1 (de) 2002-03-22 2004-05-26 The Haigh Engineering Company Ltd Abfallentsorgungsvorrichtung und Verfahren zur Abfallentsorgung
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WO2008142439A2 (en) 2007-05-18 2008-11-27 Vernacare Limited Device for reducing fibrous products
WO2025131548A1 (en) * 2023-12-18 2025-06-26 Ddc Dolphin Ltd Macerator

Also Published As

Publication number Publication date
DK2207622T3 (en) 2015-12-14
PL2207622T5 (pl) 2018-12-31
EP2207622A2 (de) 2010-07-21
ES2554810T3 (es) 2015-12-23
WO2009060187A2 (en) 2009-05-14
CA2741912A1 (en) 2009-05-14
GB0721792D0 (en) 2007-12-19
PL2207622T3 (pl) 2016-03-31
ES2554810T5 (es) 2018-11-07
WO2009060187A3 (en) 2009-07-30
EP2207622B2 (de) 2018-06-27
CA2741912C (en) 2016-11-22
DK2207622T4 (en) 2018-10-15

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