WO2004022236A1 - Appareil d'elimination de dechets - Google Patents

Appareil d'elimination de dechets Download PDF

Info

Publication number
WO2004022236A1
WO2004022236A1 PCT/AU2003/001095 AU0301095W WO2004022236A1 WO 2004022236 A1 WO2004022236 A1 WO 2004022236A1 AU 0301095 W AU0301095 W AU 0301095W WO 2004022236 A1 WO2004022236 A1 WO 2004022236A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
waste
cutting blade
container
outlet
Prior art date
Application number
PCT/AU2003/001095
Other languages
English (en)
Inventor
Hayden Scotter
Original Assignee
The State Of Queensland (Queensland Health)
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 The State Of Queensland (Queensland Health) filed Critical The State Of Queensland (Queensland Health)
Priority to AU2003257235A priority Critical patent/AU2003257235A1/en
Publication of WO2004022236A1 publication Critical patent/WO2004022236A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • B09B3/0075—Disposal of 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
    • 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
    • B02C19/00—Other disintegrating devices or methods
    • B02C19/22—Crushing mills with screw-shaped crushing means
    • 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
    • B02C23/08—Separating or sorting of material, associated with crushing or disintegrating

Definitions

  • This invention relates to an apparatus for the disposal of waste and in particular containerised waste.
  • the invention also relates to a method of disposing of containerised waste.
  • One method of disposal involves piercing the bags with a sharp object on site and pouring the contents into an appropriate receptacle. This on site opening of these containers represents a serious occupational health and safety issue for staff and patients.
  • the present invention provides an apparatus for the handling of containerised waste comprising an enclosure having an inlet for feeding containerised waste to a separating device within the enclosure, the separating device comprising a spiral cutting blade mounted for rotation within a housing, the spiral cutting blade being positioned to contact and rupture the containerised waste against a cutting edge on the housing, the spiral cutting blade defining rotating spiral channels within the housing for transporting the ruptured container to a container outlet, and the housing having a waste outlet to convey non-container waste to a drain arrangement.
  • the spiral cutting blade performs the tasks of piercing, opening and draining the container in a single breeching station without the need for additional cutters.
  • the remains of the container are then transported to a solid disposal station while the liquid contents of the container are drained to an appropriate facility.
  • the axis of the spiral cutting blade is preferably inclined from the horizontal with the container outlet at the higher end.
  • the housing is provided with an opening and the inlet of the enclosure preferably directs the containerised material onto the spiral cutting blade within the opening of the housing.
  • the spiral cutting blade is an auger.
  • the cutting edge on the housing may be a separate rupture device such as a blade extending from the housing or it may be a part of or overlying a section of the opening in the housing. The cutting edge of the housing and the spiral cutting edge slide past one another to slide through an object therebetween.
  • This waste is part of the container which contains the liquid or semi solid waste.
  • the housing may be provided with an aperture or series of apertures along its lower side to provide a drain for liquid and semi-solid waste to flow from the housing.
  • the section of the housing beneath the opening of the housing is replaced with a screen.
  • the spiral cutting blade either just contacts or passes in close proximity to the screen to dewater solid on the screen as much as possible before transporting the solid through the spiral transport channels to the container outlet.
  • a liquid waste duct may be provided on the housing below the screen to transport liquid from the enclosure to a drain arrangement.
  • the apparatus may incorporate a self cleaning device such as a spray means above the opening in the housing.
  • the spray means delivers water and other cleaning liquid onto the ruptured containers and spiral cutting blade to clean and carry the waste material into the housing outlet and drain arrangement.
  • the waste may be liquid and or entrainable solids which can be appropriately disposed of in a sewerage system. Accordingly the drain arrangement may be adapted to be in fluid communication with a sewerage system.
  • the ruptured containers are conveyed by the spiral cutting blade to the container outlet of the housing.
  • the container outlet directs the ruptured and emptied containers to the outlet from the apparatus.
  • the outlet may direct the ruptured and emptied containers to an appropriate disposal container.
  • the apparatus may include a suitable drive arrangement for driving operation of the auger.
  • the drive arrangement may include a motor and gear box.
  • the drive arrangement may be manually activated or alternatively automatically operated by a detecting means which detects a waste container being input into the apparatus through the container inlet. In such an arrangement, the drive arrangement would then be activated by the detection of the input waste.
  • the spiral cutting blade may be contained within a sleeve in the housing or has cut away sections allowing passage of the respective liquids and solids.
  • the sleeve preferably does not cover the various inlet and outlet openings in the housing or has cut away sections allowing passage of the respective liquids and solids.
  • the sleeve may have a perforated surface at least on the lower sector to allow liquid draining from the conveyed ruptured containers to separate from the containers and flow towards the waste outlet of the housing. By providing perforations in the sleeve the waste material will be able to flow on the outer side of the sleeve within the housing.
  • a safety lock may be provided on the inlet to the enclosure to prevent opening of the inlet while the drive arrangement is operating. This not only prevents accidental exposure of the user to potentially hazardous waste, but also decreases the likelihood of overloading the separating device.
  • the safety lock may be regulated by a timer on a torque converter associated with the drive arrangement of the auger.
  • a separating device for containerised material including: a housing having an opening for receiving the containerised material; a spiral cutting blade mounted for rotation within the housing, and a drive means for the spiral cutting blade, the spiral cutting blade being positioned to contact and rupture the containerised waste against a cutting edge on the housing, the spiral cutting blade defining rotating spiral channels within the housing for transporting the ruptured container to a container outlet; and the housing having a waste outlet at the lower end thereof for the contents of the container with the container outlet being above the waste outlet for discharge of ruptured and emptied container.
  • a further rupture device may be provided in proximity to the opening in the housing.
  • the rupture device may be a sharpened blade which combines with the shearing action of the spiral cutting blade to facilitate rupture of the containers.
  • the housing of the separating device may further be provided with a sleeve to contain the auger.
  • the sleeve would not generally cover the various inlet and outlet openings in the housing.
  • the sleeve may have a perforated surface at least on the lower sector to allow liquid or entrained solids draining from the conveyed ruptured containers to separate and flow on the outer side of the sleeve within the housing.
  • a method of disposing of containerised waste including the steps of: feeding containerised waste into a protected environment;
  • the waste material is directed to a waste outlet at the lower most point in the opening station and the ruptured container is conveyed to an outlet which is positioned higher than the waste outlet. This enables waste to separate from the ruptured containers to flow towards the waste outlet.
  • the step of simultaneously rupturing and separating the containerised waste is carried out on a spiral cutting blade which rotates on an axis within a housing and is inclined to convey the ruptured containers to a position higher than the outlet for the waste material.
  • the spiral cutting blade contacts and ruptures the containerised waste against a cutting edge of the housing.
  • the step of feeding the waste into the protected environment activates the operation of the auger.
  • the inlet to the enclosure may be locked to prevent further addition of containerised waste until the operation of the auger has ceased.
  • the operation of the auger may be regulated by a timer or a torque converter on the drive arrangement of the auger.
  • the present invention provides a simple apparatus and method for disposing of containerised waste which makes use of existing waste disposal systems in a hospital facility and can be quickly and easily connected and disconnected to these systems.
  • Figure 1 is a side view of an apparatus in accordance with the invention.
  • Figure 2 is a front view of the apparatus of Figure 1;
  • Figure 3 is a further front view of the apparatus in Figure 1;
  • Figure 4 is a side view of the housing of the separating device in accordance with the invention.
  • Figure 5 is a plan view of the device shown in Figure 4;
  • Figure 6 is an end view of the device shown in Figure 4;
  • Figure 7 is an auger which is received within the housing of Figure 4.
  • Figure 8 is a side view of the housing of Figure 4 with the auger fitted.
  • Figures 9, 10 and 11 are front, plan and end views of the sleeve insert for the separating device of Figure 4.
  • containerised waste is in the form of bags of a plastics material in which waste is collected prior to the bags being discarded.
  • the bags can be any form of containerised waste and while the invention is to be described with reference to containerised waste such as catheter or colostomy bags, it would be appreciated by those skilled in the art that many other forms of containerised waste could be used.
  • the apparatus 10 shown includes an enclosure defining a protected area.
  • the enclosure is illustrated comprising a housing 14 mounted above a substrate 16 via support posts 18.
  • the housing has walls 20 that define and enclose the protected environment 22.
  • the enclosure 14 is provided with an inlet 24, a drain outlet 26 and a solids outlet 28 for raptured containers.
  • the enclosure is mounted on support posts 18 so that the ruptured container receptacle 30 can be positioned beneath the enclosure 14.
  • a rubber sealing member 32 is mounted about the ruptured container outlet 28 to engage an open end 34 of the receptacle 30 to shield the disposal of solids into the receptacle 30.
  • the enclosure is positioned so that the drain outlet 26 is in fluid communication with an inlet conduit leading to a sewerage system.
  • a spring loaded sealable trap door is mounted on enclosure 14 and is biased into a closed position.
  • the trap door may be configured so that it can simply be pushed open when containerised waste is pushed through the inlet 24.
  • a switch (not shown) may be provided on the trap door to prevent the cutting apparatus operating while the door is open.
  • Apparatus 10 includes an inlet for feeding containerised waste to a separating device 40.
  • the inlet includes a guide member 38 angled downwardly so that the containerised waste can slide under gravity towards the separating device 40.
  • the separating device includes a housing having an auger 42 mounted for rotation therein.
  • the housing of the separating device has an opening 39 beneath guide member 38 to enable the containerised waste to be guided onto the auger 42.
  • the auger 42 incorporates a spiral cutting blade 44 mounted on a central shaft 46.
  • the central shaft is driven by a motor and pulley arrangement 48.
  • the auger 42 is positioned so that the central shaft is angled upwardly away from the guide member 38.
  • the auger 42 and the guide member 38 are positioned so that containerised waste slides down the guide member 38 and engages the spiral cutting blade 44 at a lower portion 50 of the central shaft 46. It is preferable that at least the lower portion 50 of the auger has a spiral cutting edge to enhance rupturing of the containerised waste.
  • a sharpened cutting blade 45 may further be provided to enhance shredding of the container under the action of the auger 42.
  • the housing is further provided with a drain arrangement 47 which serves as an outlet from the separating device for liquid and entrained solids.
  • the housing of the separating device may further be provided with a solids outlet 49 to enable ruptured and emptied containers to be removed.
  • the motor and pulley arrangement 48 is configured to rotate the shaft 46 so that the drive direction of the auger 42 is upwards away from the containerised waste inlet to the separating device. Accordingly, when a bag is directed into the spiral blade 44 of the auger 42, the action of the auger and cutting blade 45 serves to cut and shred the bag so that the waste is further separable from the bag.
  • the liquid and entrained solids drop down to the drain arrangement 47 and are directed to the drain outlet 26 which may be connected to the sewerage system.
  • the separating device may further include a sleeve 60 which fits within the housing.
  • the housing is preferably perforated at least along the lower sections thereof to enable liquid to continue to drain from the ruptured containers as they are conveyed upwardly to the solids outlet.
  • the sleeve is not intended to filter material flowing through the waste outlet but enables liquid or entrained fine solids to separately pass from the raptured containers and flow on the outer side of the sleeve down to the drain arrangement.
  • the spiral cutting blade of the auger define rotating spiral channels.
  • the drive direction of the auger 42 serves to draw the now ruptured and emptied bag in the rotating spiral channels upwardly into a bag holding section 52 at the upper end of the spiral blade 44.
  • the holding section 52 directs the raptured and emptied containers through outlet 49 into chute 56.
  • Chute 56 is positioned above and upstream of the solids outlet 28 from where the ruptured and emptied containers drop into receptacle 30.
  • Apparatus 10 further includes a spray flushing system 58 positioned above the roof 60 of the enclosure 14.
  • the spray flushing system 58 can be activated manually. Alternatively the spray flushing system 58 can be activated at predetermined intervals or can be activated upon the detection of containerised waste within the enclosure.
  • Spray flushing system is positioned so that water and/or other cleaning additives can be directed from the spraying means onto the auger 42 and associated components to flush liquid and entrained solids into the drain arrangement 47. Disinfectant or other antimicrobial substances can be added to the flushing system to disinfect the interior of the enclosure.
  • the apparatus 10 can be operated in a variety of ways either in manual mode or automatic mode.
  • manual mode the user manually activates the motor and pulley arrangement 48 whereas in automatic mode a suitable detection means detects the presence of the containerised waste within the enclosure preferably as it passes through the inlet and activates the motor and pulley arrangement 48.
  • the trap door of the inlet 24 may be provided with a safety lock such as a solenoid lock to prevent opening while the drive arrangement of the auger is operating. This prevents accidental exposure of the user to potentially hazardous waste and also decreases the likelihood of overloading the separating device.
  • the safety lock may be deactivated by a timer, a torque converter associated with the drive arrangement indicating that the previous container has been processed, or a combination thereof.
  • the drive arrangement may further be provided with a torque stalling control.
  • the torque stalling control stops operation of the auger once the torque on the drive shaft exceeds a preset limit and preferably reverses the rotation of the drive shaft for a period of time to clear the auger. The rotation of the auger is then returned to its normal direction of rotation to complete processing of the container.
  • the present invention provides for safe disposal of containerised waste which simply and substantially reduces disposal costs.
  • the invention provides a simple apparatus to empty the containers containing the waste into a system for appropriate disposal, such as a sewerage system while collecting the ruptured and emptied containers for separate disposal.

Landscapes

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

Abstract

L'invention concerne un appareil et un procédé permettant de manipuler des déchets conteneurisés. Cet appareil comprend une enceinte pourvue d'une admission (24) permettant d'introduire des déchets conteneurisés dans un dispositif de séparation (40) ménagé dans l'enceinte. Ce dispositif de séparation (40) est doté d'une lame tranchante spiralée (44) qui est montée de façon à effectuer un mouvement de rotation au sein d'un logement (14) et est positionnée de manière à entrer en contact avec les conteneurs de déchets et à les rompre contre une arête tranchante (45) ménagée sur le logement. Cette lame tranchante spiralée définit des canaux de rotation spiralés au sein du logement (14) qui servent à transporter les conteneurs rompus vers une sortie de conteneur (28). En outre, ledit logement comporte une sortie de déchets servant à transporter les déchets non conteneurisés vers une sortie d'écoulement.
PCT/AU2003/001095 2002-09-03 2003-08-27 Appareil d'elimination de dechets WO2004022236A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003257235A AU2003257235A1 (en) 2002-09-03 2003-08-27 Apparatus for the disposal of waste

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2002951173A AU2002951173A0 (en) 2002-09-03 2002-09-03 Apparatus for the disposal of waste
AU2002951173 2002-09-03

Publications (1)

Publication Number Publication Date
WO2004022236A1 true WO2004022236A1 (fr) 2004-03-18

Family

ID=27671499

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2003/001095 WO2004022236A1 (fr) 2002-09-03 2003-08-27 Appareil d'elimination de dechets

Country Status (2)

Country Link
AU (1) AU2002951173A0 (fr)
WO (1) WO2004022236A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2512405B (en) * 2013-03-28 2018-05-30 D C Norris & Company Ltd Bag emptying system
CN114669576A (zh) * 2022-03-28 2022-06-28 中国科学院大学宁波华美医院 一种腹膜透析废弃液的安全处理机器

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112573792B (zh) * 2018-05-17 2023-04-25 川源(中国)机械有限公司 一种降低污泥含水率的双重压榨带式污泥脱水机

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4582261A (en) * 1984-05-18 1986-04-15 Adamation Pulper
US5451004A (en) * 1993-09-08 1995-09-19 Somat Corporation Integrated waste pulping and liquid extraction system
JPH0958641A (ja) * 1995-08-23 1997-03-04 Sumitomo Metal Ind Ltd 袋詰め固形廃棄物用破袋機
JPH09239342A (ja) * 1996-03-05 1997-09-16 Teranishi Kogyo Kk ゴミの減量方法および減量装置
JPH10216988A (ja) * 1997-02-04 1998-08-18 Orion Mach Co Ltd 家畜の糞尿処理装置
US5799883A (en) * 1995-08-03 1998-09-01 Sterile Technology Industries, Inc. Waste treatment apparatus and method
JP2002186872A (ja) * 2000-12-20 2002-07-02 Morita Econos Ltd 破袋装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4582261A (en) * 1984-05-18 1986-04-15 Adamation Pulper
US5451004A (en) * 1993-09-08 1995-09-19 Somat Corporation Integrated waste pulping and liquid extraction system
US5799883A (en) * 1995-08-03 1998-09-01 Sterile Technology Industries, Inc. Waste treatment apparatus and method
JPH0958641A (ja) * 1995-08-23 1997-03-04 Sumitomo Metal Ind Ltd 袋詰め固形廃棄物用破袋機
JPH09239342A (ja) * 1996-03-05 1997-09-16 Teranishi Kogyo Kk ゴミの減量方法および減量装置
JPH10216988A (ja) * 1997-02-04 1998-08-18 Orion Mach Co Ltd 家畜の糞尿処理装置
JP2002186872A (ja) * 2000-12-20 2002-07-02 Morita Econos Ltd 破袋装置

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Derwent World Patents Index; Class D15, AN 1998-500049/43 *
DATABASE WPI Derwent World Patents Index; Class P41, AN 1997-207166/47 *
DATABASE WPI Derwent World Patents Index; Class P41, AN 2002-553578/59 *
DATABASE WPI Derwent World Patents Index; Class Q31, AN 1997-208747/19 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2512405B (en) * 2013-03-28 2018-05-30 D C Norris & Company Ltd Bag emptying system
CN114669576A (zh) * 2022-03-28 2022-06-28 中国科学院大学宁波华美医院 一种腹膜透析废弃液的安全处理机器
CN114669576B (zh) * 2022-03-28 2023-02-14 中国科学院大学宁波华美医院 一种腹膜透析废弃液的安全处理机器

Also Published As

Publication number Publication date
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