EP1624113A2 - Mobile Vorrichtung zur Oberflächenbehandlung - Google Patents

Mobile Vorrichtung zur Oberflächenbehandlung Download PDF

Info

Publication number
EP1624113A2
EP1624113A2 EP05076812A EP05076812A EP1624113A2 EP 1624113 A2 EP1624113 A2 EP 1624113A2 EP 05076812 A EP05076812 A EP 05076812A EP 05076812 A EP05076812 A EP 05076812A EP 1624113 A2 EP1624113 A2 EP 1624113A2
Authority
EP
European Patent Office
Prior art keywords
filter
liquid
filter means
reservoir
filtrate
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.)
Withdrawn
Application number
EP05076812A
Other languages
English (en)
French (fr)
Other versions
EP1624113A3 (de
Inventor
Nicolaas Ernst Johan Langbein
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.)
Lj Bekker Holding Bv
Original Assignee
Lj Bekker Holding Bv
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 Lj Bekker Holding Bv filed Critical Lj Bekker Holding Bv
Publication of EP1624113A2 publication Critical patent/EP1624113A2/de
Publication of EP1624113A3 publication Critical patent/EP1624113A3/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
    • E01H1/10—Hydraulically loosening or dislodging undesirable matter; Raking or scraping apparatus ; Removing liquids or semi-liquids e.g., absorbing water, sliding-off mud
    • E01H1/101—Hydraulic loosening or dislodging, combined or not with mechanical loosening or dislodging, e.g. road washing machines with brushes or wipers
    • E01H1/103—Hydraulic loosening or dislodging, combined or not with mechanical loosening or dislodging, e.g. road washing machines with brushes or wipers in which the soiled loosening or washing liquid is removed, e.g. by suction

Definitions

  • the present invention relates to a mobile device for treating a surface making use of a liquid which is sprayed thereon under high pressure using at least one spray head, comprising at least one optionally self-propelling chassis with a first reservoir for the liquid, first pumping means for guiding the liquid under increased pressure from the first reservoir to the at least one spray head, recovery means for taking up used liquid and a second reservoir for at least temporarily storing recovered liquid.
  • Such devices are utilized in many ways and for diverse applications, varying from cleaning surfaces, for instance of walls, outside walls, floors, pavements, runways and roads, to the pre-treatment and roughening of surfaces. This may for instance involve local removal of chewing gum and graffiti, but also total surface reconditioning such as in streets and roads, wherein particularly rubber from tyres must be removed.
  • a mobile cleaning device optionally on a self-propelling vehicle, can herein be employed wholly autonomously, i.e. without necessary fixed connections, to perform the desired surface treatment on site.
  • the vehicle has available a first reservoir, the so-called clean water tank, from which water can be drawn which is sprayed on the surface under high pressure to remove deposits and other dirt or to modify the surface as such.
  • Recovery means are usually also provided to take up water from the surface once it has been used and to store it temporarily in a second reservoir, the so-called contaminated water tank, for discharge upon return of the vehicle.
  • the present invention has for its object, among others, to provide a device of the type stated in the preamble which obviates this drawback without relinquishing the described advantages of a mobile device.
  • a device of the type stated in the preamble has the feature according to the invention that the recovery means comprise a purifying installation for making recovered liquid suitable for re-use, that the purifying installation comprises at least first filter means for filtering particles having at least a first size and second filter means for filtering particles having at least a second, smaller size, that an inlet of the first filter means is coupled to the second reservoir, that a filtrate outlet of the second filter means is coupled to the first reservoir, and that a buffer reservoir is arranged between a filtrate outlet of the first filter means and an inlet of the second filter means.
  • the placing of such a purifying installation in the device enables the device to use at least a significant part of the liquid a number of times, so that the maximal operating cycle of the device is extended significantly.
  • the distribution of the purification over at least a first, relatively coarse filter and a second, relatively fine filter allows a sufficiently high filtration throughput, wherein mutually differing throughput times of both filters are compensated by interposing the buffer reservoir. Both filters can thus each be operated at their optimal throughflow.
  • a particular embodiment of the device according to the invention has the feature that the first filter means comprise at least one relatively coarse screen filter and the second filter means a microfiltration filter.
  • a further embodiment of the device herein has the feature that the first size is in the order of 100-1000 micrometres and the second size is in the order of a maximum of 1-10 micrometres.
  • the screen filter herein removes the coarse contaminants from the taken-up liquid, while the microfiltration filter can remove particles in the order of tenths of microns from the recovered liquid, and can be adjusted to the requirements of the spray head. The resulting filtrate is then sufficiently pure to enable safe feedback to the spray head.
  • the device according to the invention has the feature that the second size lies below 0.1 micrometre, and in particular is in a range of 10-20 nanometres. Because the filtration using the second filter means is herein performed to a region of the size of bacteria and viruses, the fed back liquid is thus substantially free of germs which, particularly in sewer cleaning and other less hygienic applications, is an important factor in avoiding or at least reducing contamination of persons involved therein.
  • a preferred embodiment of the device according to the invention has the feature that at least one of said filters comprises a longitudinal filter with a main inlet and a main outlet for a main liquid flow on a first side of a filter surface and a filtrate outlet for an obtained filtrate on a second side of the filter surface.
  • the main flow of such a longitudinal filter not only provides a continuous supply of liquid for filtering, but moreover ensures a cleaning action on the filter surface so that premature clogging thereof can be avoided.
  • the filtrate is drawn off on an opposite side of the filter surface. Owing to this self-cleaning action such filters are highly suitable for the present mobile application, wherein fully continuous operation is desired.
  • the device according to the invention has the feature that a multi-stage valve is coupled to a filtrate outlet of at least the longitudinal filter and has at least two exits, one of which leads to a main flow through the filter.
  • a shunt safety is hereby provided at the filtrate outlet and the flow through the filter does not have to be interrupted or tempered when there is insufficient filtrate demand, so that the filter can always be operated in an optimum state.
  • the used liquid after being used, can be removed per se from the surface in different ways, for instance by scooping or mopping and the like. Particularly good results have however been achieved with a further particular embodiment of the device according to the invention, characterized in that the recovery means comprise at least one suction mouthpiece for suctioning used liquid from the surface.
  • the suction mouthpiece can herein be held at a small distance from the surface and do its work in contact-free manner. This reduces the chance of wear and damage.
  • a preferred embodiment of the device according to the invention has the feature that the first filter means are coupled to an outlet of second liquid pumping means, that the second filter means are coupled to an outlet of third liquid pumping means, and that during operation the second and third pumping means exert a mutually differing liquid flow rate on a filtrate flow out of the first filter means and a main flow through the second filter means.
  • FIG. 1 shows a cross-section of a mobile device for treating a surface 1, in this example a washing vehicle, with which the surface of asphalt, concrete and in particular very open asphalt concrete (ZOAB) of roads can be thoroughly cleaned and roughened.
  • the washing vehicle comprises a more or less standard truck chassis 2 with a driver's cab 3 on which is placed a washing device 4.
  • Use is made in this embodiment of a double-axle chassis, but chassis with more or fewer axles also lie within the scope of the invention.
  • a self-propelling chassis as in this embodiment, it is also possible to opt for a truck-semi-trailer or truck-trailer combination in accordance with the desired transport capacity, and the device can also be divided over a number of chassis.
  • Washing device 4 comprises a first reservoir 401 in the order of five thousand litres, in which a supply of liquid can be stored. Use is made in this embodiment of cleaning with water under high pressure, wherein the liquid consists simply of clean water, optionally supplemented with a herbicide, soap or other additive.
  • First reservoir 401 will therefore be designated hereinbelow as clean water tank to distinguish this tank from a second reservoir 402 to which used and therefore contaminated water is returned. This latter reservoir will be designated hereinbelow as contaminated water tank.
  • the surface cleaning takes place by spraying water from clean water tank 401 onto the surface under extremely high pressure using one or more spray heads 500, in this embodiment three.
  • This is here a rotating spray head 403 which delivers a pressure at its outer end in the order of about 1000-1500 bar at a flow rate in the order of about 135 litres per minute.
  • first pumping means in the form of a pump-filter combination 501-504 adapted to this pressure are accommodated in a pump space 6 of the device.
  • This pump/filter combination is actuated via a hydraulic valve 501 and, in addition to a pre-pump 502 and an end pump 504 which provides the final pressure, comprises a filter 503 which is able to effectively stop solid particles from a size of 1 ⁇ m in the unlikely event these are present in the liquid.
  • End pump 504 and spray head 500 are generally extremely susceptible to wear as a result of such solid particles in the liquid of a size from typically 1-10 ⁇ m, depending on the type of pump, and thus retain their normal lifespan as a result of filter 503.
  • An inlet 505 of pumping means 501-504 is coupled to clean water tank 401, while an outlet 506 leads to spray heads 500.
  • the device further comprises recovery means which comprise, among other parts, a suction mouthpiece 7 with which liquid, which has been sprayed on the surface with spray heads 500, can be taken up from this same surface using pumping means (not further shown). The surface is thus more or less dried after being cleaned.
  • the collected, contaminated water is discharged to contaminated water tank 402 which in this embodiment has a volume of about 12000 litres.
  • the device according to the invention is equipped with a purifying installation which is added to the recovery means to make the contaminated water taken up from the surface therewith once again suitable for re-use.
  • the purifying installation comprises in the first instance first filter means 700,701 which are coupled to the contaminated water tank and are formed in this embodiment by a relatively coarse drum screen 700 in combination with a finer hydrocyclone filter 701.
  • Drum screen 700 prevents solid particles any larger than typically about 300-1000 ⁇ m in the contaminated water from leaving the contaminated water tank 402.
  • the contaminated water is carried to hydrocyclone filter 701 via drum screen 700 using second pumping means 602 provided for this purpose. This process is controlled by means of a hydraulic valve 604 which is arranged in the supply line and which is in an opened position during operation.
  • the hydrocyclone filter is of the so-called longitudinal type, which has an inlet 711 and outlet 712 for a main liquid flow on a first side of the actual screen filter surface 710 and a filtrate outlet 713 for filtrate on a second side thereof.
  • the contaminated water is thus pumped around continuously over cyclone filter 701 and fed back to the contaminated water tank, wherein a filtrate is drawn off at filtrate outlet 713.
  • This type of filter is therefore highly suitable for the present application, where continuous operation is desired with relatively heavily contaminated water.
  • Cyclone filter 701 is able to effectively filter solid particles having a size of typically in the order of a hundred to several hundred microns, so that the filtrate is at least practically free thereof. Although the worst contamination is hereby removed from the contaminated water by means of first filter means 700,701, the filtrate is not yet suitable for feeding to the spray nozzle.
  • the lance 5 and first pumping means 504 applied here do not tolerate particles of a size greater than about 1-10 ⁇ m, and would break down in a short time under the influence of the filtrate from first filter means 701.
  • second filter means 702 which here comprise a (sub)micromembrane filter and are able to perform a microfiltration wherein, depending on the filter membrane applied, particles larger than about 0.01-10 ⁇ m can be removed effectively.
  • second filter means 702 here comprise a (sub)micromembrane filter and are able to perform a microfiltration wherein, depending on the filter membrane applied, particles larger than about 0.01-10 ⁇ m can be removed effectively.
  • an ultrafiltration membrane which filters out solid particles from 10-20 nanometres has been chosen in respect of membrane filter 702.
  • Membrane filter 702 is also of the longitudinal type, which means that a main flow of relatively contaminated water is guided continuously thereover along a first membrane side, while a clean filtrate is drawn off at a filtrate outlet 723 on a second, opposite membrane side.
  • the main flow herein runs over a main inlet 721 of the membrane filter and is fed back via a main outlet 722 and herein kept moving by means of third pumping means 603 in combination with a hydraulic valve 605 which is open during operation.
  • the membrane filter comprises a long bundle of hollow tubes, the wall of which is formed from membrane material. Due to this specific form, such filters are also designated as straw filters.
  • the main flow herein runs through the interior of the tubes, while the filtrate is drawn off on an outer side of the straws.
  • the main flow pumped around continuously over the filter herein keeps the membrane relatively clean, so that relatively long operation is also possible for this filter.
  • the longitudinal filters used here require a relatively strong main flow to prevent rapid clogging of the surface.
  • the main flow of the second filter means is however fed by the drained filtrate from the first filter means, which has a markedly lower rate of flow in order to maintain the desired filtration quality.
  • a buffer reservoir 403 which in the present embodiment has a volume of about 9000 litres, is therefore arranged between filtrate outlet 713 of first filter means 700,701 and main inlet 721 of second filter means 702. Filtrate from first filter means 701 is collected in this reservoir before being guided over second filter means 702.
  • the clean water tank 401, contaminated water tank 402 and buffer reservoir 403 are filled at least partly with clean water so that the vehicle has available from the outset a relatively large supply of liquid, wherein this supply is continually replenished with recovered filtrate from the first filter means. An exceptionally long fully-continuous operation of the mobile device is thus possible.
  • both the first filter means 700,701 and the second filter means 702 are provided at a filtrate outlet 713, 723 respectively with an optionally self-thinking, hydraulic multi-stage valve 606, 607 respectively.
  • this valve opens towards the main flow of the relevant filter 701,702 so that the filtrate is entrained in the main flow. This occurs for instance when buffer reservoir 403 or clean water tank 401 is completely full, so that the filter cannot dispose of the filtrate.
  • Such a situation can be determined in reliable manner by means of a flow-rate meter in the filtrate line. The filter does not therefore need to be taken out of operation when such a situation occurs, which enhances operation thereof.
  • first filter means divided over two stages, i.e. the screen filter and the hydrocyclone filter
  • second filter means comprise a single stage in the form of the membrane filter.
  • first filter means can in some circumstances also be embodied in a single stage or, conversely, more stages can be used in respect of both filter means.
  • the embodiment is based on a cleaning vehicle for cleaning a street surface.
  • the device according to the invention is also suitable instead for cleaning other surfaces and, owing to the high operating pressure which can be obtained therewith, also for more drastic surface treatments wherein the surface is roughened or otherwise modified.
  • the device can advantageously be applied for cleaning or otherwise treating walls of sewers, storage tanks and other installations which may or may not be underground.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Filtration Of Liquid (AREA)
  • Spray Control Apparatus (AREA)
EP05076812A 2004-08-05 2005-08-04 Mobile Vorrichtung zur Oberflächenbehandlung Withdrawn EP1624113A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL1026793A NL1026793C2 (nl) 2004-08-05 2004-08-05 Mobiele inrichting voor het behandelen van een oppervlak.

Publications (2)

Publication Number Publication Date
EP1624113A2 true EP1624113A2 (de) 2006-02-08
EP1624113A3 EP1624113A3 (de) 2006-09-20

Family

ID=34974400

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05076812A Withdrawn EP1624113A3 (de) 2004-08-05 2005-08-04 Mobile Vorrichtung zur Oberflächenbehandlung

Country Status (2)

Country Link
EP (1) EP1624113A3 (de)
NL (1) NL1026793C2 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010061222A1 (en) * 2008-11-25 2010-06-03 Innovative Industries Limited Mobile cleaning equipment
CN101713165B (zh) * 2009-10-29 2011-07-27 刘廷国 排水性沥青路面机能恢复车
CN102733291A (zh) * 2011-12-23 2012-10-17 上海浦东路桥建设股份有限公司 用于吸收汽车尾气的沥青混合料改性剂的再生方法
CN103993572A (zh) * 2014-05-13 2014-08-20 河南高远公路养护设备股份有限公司 排水性沥青路面机能恢复车用清水罐
CN108104035A (zh) * 2017-12-27 2018-06-01 长沙硕博电子科技股份有限公司 一种基于雨量检测的环卫车作业控制方法
CN108585121A (zh) * 2018-06-19 2018-09-28 青岛上和环保科技有限公司 洗扫车污水循环处理系统

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4200064C2 (de) * 1992-01-03 1995-07-06 Hako Gmbh & Co Fahrbare Naßreinigungsmaschine
US5469597A (en) * 1993-11-04 1995-11-28 Hydrowash Recycling Systems, Inc. Closed loop surface cleaning system
US5601659A (en) * 1995-03-13 1997-02-11 Cyclone Surface Cleaning, Inc. Mobile power wash system with water reclamation and hydrocarbon removal method

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
JOHNSTON-BEAM: "Charts manual - Beam order no. 21-01-0076, Chassis no. 029754", CHARTS MANUAL, pages 1 - 80, XP003008143
JOHNSTON-BEAM: "Spare parts book: Johnston-beam S25000 Geva", pages: 1 - 63, XP003008142
JOHNSTON-BEAM: "User manual for beam sweeper 21-01-0076 Geva", USER MANUAL, 2003, pages 1 - 34+COVER, TOC, XP003008141

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010061222A1 (en) * 2008-11-25 2010-06-03 Innovative Industries Limited Mobile cleaning equipment
CN101713165B (zh) * 2009-10-29 2011-07-27 刘廷国 排水性沥青路面机能恢复车
CN102733291A (zh) * 2011-12-23 2012-10-17 上海浦东路桥建设股份有限公司 用于吸收汽车尾气的沥青混合料改性剂的再生方法
CN103993572A (zh) * 2014-05-13 2014-08-20 河南高远公路养护设备股份有限公司 排水性沥青路面机能恢复车用清水罐
CN103993572B (zh) * 2014-05-13 2016-02-03 河南高远公路养护设备股份有限公司 排水性沥青路面机能恢复车用清水罐
CN108104035A (zh) * 2017-12-27 2018-06-01 长沙硕博电子科技股份有限公司 一种基于雨量检测的环卫车作业控制方法
CN108104035B (zh) * 2017-12-27 2019-08-30 长沙硕博电子科技股份有限公司 一种基于雨量检测的环卫车作业控制方法
CN108585121A (zh) * 2018-06-19 2018-09-28 青岛上和环保科技有限公司 洗扫车污水循环处理系统

Also Published As

Publication number Publication date
NL1026793C2 (nl) 2006-02-07
EP1624113A3 (de) 2006-09-20

Similar Documents

Publication Publication Date Title
EP2987565B1 (de) Reinigungsverfahren und reinigungsvorrichtung mit einzeltankrecyclingsystem
CN1213887C (zh) 用于重型机械现场清洗的清洗和再循环装置及方法
US4578198A (en) Sewer and catch basin cleaning system
US9611636B2 (en) Mobile water reclaiming system
CN101475247B (zh) 以超滤为核心集多种净水技术于一体的短流程水处理工艺
JP6183606B2 (ja) 濾過装置及び濾過方法
KR102069546B1 (ko) 노면의 비점오염 물질 제거용 청소차량
CN103908832B (zh) 一种用于吸污车的多级污水处理循环再利用系统
US10087613B2 (en) Mobile water reclaiming system
KR20170122153A (ko) 자동 재생 기능을 구비한 로터 필터 시스템
NL1026793C2 (nl) Mobiele inrichting voor het behandelen van een oppervlak.
JP2009108553A (ja) 特殊舗装用機能回復車
CN102596435A (zh) 处理在容器清洁过程中积聚的工作液体的方法和设备
CN214939707U (zh) 一种清洁车
JP4906936B2 (ja) 濾材の洗浄システム及び濾材の洗浄方法
KR100394319B1 (ko) 오수정화장치
KR100543150B1 (ko) 여과사 세정 방법과 그 시스템
KR20020079218A (ko) 오수정화장치
JP2007307492A (ja) フィルタ洗浄装置
KR101093207B1 (ko) 지하 구조물 폐수 처리장치
US20230069757A1 (en) Street sweeper with an automatic cleaning system for cleaning a recycling system
CN210751491U (zh) 一种污水净化的吸污车
US6817475B2 (en) Multi-stage filter cleaning system with water recycling
US8997763B2 (en) Bin washing system
CN208119389U (zh) 船舶除锈高压清洗系统

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

TPAC Observations filed by third parties

Free format text: ORIGINAL CODE: EPIDOSNTIPA

17P Request for examination filed

Effective date: 20070320

17Q First examination report despatched

Effective date: 20070426

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20100202