DK163437B - APPLIANCES FOR CLEANING COUNTRY CIRCUITS - Google Patents
APPLIANCES FOR CLEANING COUNTRY CIRCUITS Download PDFInfo
- Publication number
- DK163437B DK163437B DK659788A DK659788A DK163437B DK 163437 B DK163437 B DK 163437B DK 659788 A DK659788 A DK 659788A DK 659788 A DK659788 A DK 659788A DK 163437 B DK163437 B DK 163437B
- Authority
- DK
- Denmark
- Prior art keywords
- filter
- water
- nozzles
- cyclone
- tank
- Prior art date
Links
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
Abstract
Description
iin
DK 163437 BDK 163437 B
Opfindelsen angår et apparat til rengøring af en plan overflade med kraftige vandstråler, især til fjernelse af gummi fra startbaner, og som mindst omfatter én dyse forbundet med et rør til en kilde for trykvand, et sammen 5 med dyserne "bevægeligt cirkulationssystem, der omfatter en vandtank, en dermed forbundet pumpeenhed til at påføre vandet et højt tryk, et hus med en rundt om dyserne anbragt udsugningsslange, filterorganer til fjernelse af fast materiale fra det fra huset opsamlede vand, samt et 10 returrør til tanken.BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to an apparatus for cleaning a flat surface with heavy water jets, in particular for removing rubber from runways, and comprising at least one nozzle connected to a pipe for a source of pressurized water; a water tank, an associated pump unit for applying high pressure to the water, a housing with a suction hose arranged around the nozzles, filter means for removing solid material from the water collected from the housing, and a return pipe for the tank.
En sådan enhed er kendt fra DE-2.617.635.Such a device is known from DE-2,617,635.
Det er kendt at bremsespor på start- og landingsbaner i 15 lufthavne kan udgøre et uigennemtrængeligt lag, der forhindrer vand i at løbe væk fra banen, når det har regnet kraftigt. Der opstår derfor en risiko for at flyvemaskiner udsættes for aquaplaning ved starter og landinger.It is known that brake tracks on runways at 15 airports can constitute an impermeable layer that prevents water from running off the runway when it has rained heavily. Therefore, there is a risk of airplanes being exposed to aquaplaning at takeoffs and landings.
Der kendes forskellige metoder til fjernelse af gummilag.Various methods for removing rubber layers are known.
20 Anvendelsen af kemikalier til opløsning af gummiet og vandstråler til at spule start- og landingsbanerne rene har den ulempe, at flyvemaskinens dæk, der er i berøring med banerne risikerer at blive angrebet, samtidig med at omgivelserne forurenes. Samtidig er denne fremgangsmåde 25 meget tidsforbrugende og start- og landingsbanen må af-spærres i to dage.20 The use of chemicals to dissolve the rubber and water jets to flush the runways clean has the disadvantage that the airplane tire that is in contact with the runways risks being attacked while contaminating the surroundings. At the same time, this approach is very time-consuming and the runway must be closed for two days.
En anden kendt fremgangsmåde til fjernelse af gummiaflejringer anvender kraftige vandstråler, der med dyser ret-30 tes imod landingsbanen i en afstand på omkring 60 cm. Det anvendte tryk er f.eks. omkring 400 bar og vandforbruget er på mellem 70 og 100 liter pr. minut. Det med gummipartikler forurenede vand forsvinder ud til omgivelserne, hvorfor også denne metode er skadelig over for omgivel-35 seme. Af andre ulemper kan nævnes, at vandforbruget er højt, og at styringen er så mangelfuld, at der er en stor risiko for at asfaltoverfladen ødelægges.Another known method for removing rubber deposits uses powerful water jets which are directed at nozzles to the runway at a distance of about 60 cm. The pressure used is e.g. around 400 bar and water consumption is between 70 and 100 liters per liter. minute. The water contaminated with rubber particles disappears into the environment, which is why this method is also harmful to the environment. Other drawbacks include the fact that water consumption is high and that the control is so inadequate that there is a great risk of the asphalt surface being destroyed.
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22
Enheden angivet i DE-2.617.635 søger at forebygge en sådan forurening ved at fjerne faste stoffer fra vandet, men filtreringen er ikke tilstrækkelig effektiv, hvorfor der er en risiko for tilstopning af filteret, samt en ri-5 siko for at partiklerne føres til vandtanken.The device disclosed in DE-2,617,635 seeks to prevent such contamination by removing solids from the water, but the filtration is not sufficiently efficient, which is why there is a risk of clogging of the filter and a risk of the particles being fed to water tank.
Formålet med opfindelsen er at undgå disse risici, hvorfor apparatet har en cyklon til udsugning af luft fra det opsamlede vand, et filter til opsamling af store par-10 tikler, og som er forbundet til cyklonen og mindst et posefilter til partikler større end 3 Mm og et filter med aktivt kul til opsamling af små partikler.The object of the invention is to avoid these risks, which is why the apparatus has a cyclone for extracting air from the collected water, a filter for collecting large particles, which is connected to the cyclone and at least one bag filter for particles larger than 3 mm. and an activated carbon filter for small particulate collection.
Der kan med fordel anvendes vand ved et meget højt tryk, 15 hvilket betyder et tryk i størrelsesordenen fra 1800 til 2400 bar. Banen påsprøjtes mindre end 25 liter vand pr. minut. Recirkulationen betyder, at gummiet føres ind i filtrene og en betydelig del af det påsprøjtede vand returneres til vandtanken. Vandforbruget er derfor kun om-20 kring en fjerdedel af, hvad det ville være uden recirkulation. Da det meste af vandet fjernes fra banerne, er disse altid klar til en nødlanding. Vandtanken kan gøres relativ lille og kan derfor anbringes på køretøjet med dyserne.Advantageously, water can be used at a very high pressure, which means a pressure in the range of 1800 to 2400 bar. The web is sprayed with less than 25 liters of water per minute. The recirculation means that the rubber is fed into the filters and a significant portion of the sprayed water is returned to the water tank. Water consumption is therefore only about 20% of what it would be without recycling. As most of the water is removed from the runways, these are always ready for an emergency landing. The water tank can be made relatively small and can therefore be placed on the vehicle with the nozzles.
2525
Det krævede vacuum til opsamling af det forurenede vand fra dysehuse til cyklonen og til separation og fjernelse af luften inde i cyklonen kan frembringes med en vacuum-pumpe. Det er enklere med et på cyklonen anbragt og for-30 bundet kammer, der har et eller flere venturirørstykker, der er forbundet til en luftkompressor.The required vacuum for collecting the contaminated water from nozzle housings to the cyclone and for separating and removing the air inside the cyclone can be generated by a vacuum pump. It is simpler to have a chamber mounted and connected to the cyclone having one or more venturi pieces connected to an air compressor.
Der kan med fordel anbringes en membranpumpe henholdsvis · i væskeledningen mellem cyklonen og posefilteret og i 35 væskeledningen mellem posefilteret og filteret med aktivt kul.Advantageously, a diaphragm pump may be placed respectively in the liquid line between the cyclone and the bag filter and in the liquid line between the bag filter and the activated charcoal filter.
DK 163437 BDK 163437 B
33
Filteret med aktivt kul skal renses periodisk, hvilket kan ske ved tilbagestrømning af vandet. Til dette formål er der anbragt en væskeforbindelse både mellem tanken og væskeudgangen på filteret med aktivt kul og mellem væske-5 indgangen på dette filter og posefilteret. Systemet har desuden skifteventiler til overføring af vand fra tanken til den side af det aktive kulfilter, der normalt fungerer som udgangsside, til periodisk gennemskylning af dette filter og til bortledning af skyllevandet fra filte-10 rets normale indgangsside til posefiltrene.The activated charcoal filter must be cleaned periodically, which can be done by back-flowing the water. For this purpose, a liquid connection is provided between both the tank and the liquid outlet of the activated carbon filter and between the liquid inlet of this filter and the bag filter. The system additionally has switching valves for transferring water from the tank to the side of the active carbon filter, which normally acts as the exit side, for periodic flushing of this filter and for diverting the flushing water from the normal input side of the filter to the bag filters.
For at opnå det meget høje vandtryk (omkring 2200 bar), der er nødvendig til processen, er højtrykspumpen udformet som en forstærker med et hydraulisk drevet stempelsy-15 stem, der konverterer et relativt lavt tryk og en høj kapacitet til et meget højt tryk og en lav kapacitet.To achieve the very high water pressure (about 2200 bar) required for the process, the high pressure pump is designed as an amplifier with a hydraulically driven piston system which converts a relatively low pressure and a high capacity to a very high pressure and a low capacity.
En effektiv udsugning fra dysehuset opnås ved at udsugningsslangen åbner tangentielt ind i huset med dyserne.An effective suction from the nozzle housing is achieved by opening the suction hose tangentially into the housing with the nozzles.
2020
Der er normalt anbragt et antal dyser på en drejelig lodret aksel.A number of nozzles are usually arranged on a rotatable vertical shaft.
Højtrykspumpen (forstærkeren) må beskyttes imod faste 25 partikler fra tanken. Der er derfor anbragt et dobbelt filter i forbindelsen mellem vandtanken og højtrykspumpen.The high pressure pump (amplifier) must be protected against solid 25 particles from the tank. Therefore, a double filter is placed in the connection between the water tank and the high-pressure pump.
Posefiltrene skal udskiftes periodisk, og for at dette 30 kan lade sig gøre uden at afbryde driften af apparatet, er dette forsynet med mindst to posefiltre, der er anbragt parallelt og med ventiler i deres respektive tilførselsrør.The bag filters must be replaced periodically and in order for this to be possible without interrupting the operation of the apparatus, this is provided with at least two bag filters arranged in parallel and with valves in their respective supply pipes.
35 Opfindelsen skal forklares nærmere i det efterfølgende under henvisning til tegningen, hvor: 4The invention will be explained in more detail below with reference to the drawings, in which:
DK 163437 BDK 163437 B
fig. 1 skematisk viser en udførelsesform af apparatet ifølge opfindelsen; fig. 2 viser huset med stråledyserne set fra side; 5 fig. 3 viser huset med stråledyserne set fra oven; og fig. 4 viser et tværsnit af huset med stråledyserne.FIG. 1 shows schematically an embodiment of the apparatus according to the invention; FIG. 2 is a side view of the housing with the jet nozzles; 5 FIG. 3 is a plan view of the housing with the nozzles; and FIG. 4 shows a cross section of the housing with the jet nozzles.
10 °et viste apparat har til formål at rengøre i hovedsagen plane overflader, specielt med henblik på fjernelse af gummiaflejringer, der stammer fra flyvemaskiners bremsespor på landingsbaner i lufthavne. Kraftige vandstråler rettes imod jordoverfladen fra en afstand omkring 15 cm 15 fra denne. To dyser 1 (fig. 4), er hver anbragt for enden af et rør 2, der er forbundet til en central, hul aksel 3, der kan drejes ved hjælp af en drivmekanisme 4. Dyserne 1 er placeret i et rundt hus 5, ind i hvilket en udsugningsledning 6 åbner tangentielt.The apparatus shown 10 is intended to clean substantially planar surfaces, in particular for the removal of rubber deposits arising from airplane brake tracks on runways at airports. Powerful water jets are directed to the ground surface from a distance of about 15 cm 15 from it. Two nozzles 1 (Fig. 4) are each positioned at the end of a tube 2 connected to a central hollow shaft 3 which can be rotated by a drive mechanism 4. The nozzles 1 are located in a round housing 5, into which a suction line 6 opens tangentially.
2020
Dysehuset 5 er anbragt på et køretøj 7. Fig 1 viser skematisk hele apparatet med trykgenerator, filtre og recirkulationssystem. Apparatet er placeret på et køretøj 7, der også kan fremføre dysehuset 5.The nozzle housing 5 is mounted on a vehicle 7. Fig. 1 shows schematically the entire apparatus with pressure generator, filters and recirculation system. The apparatus is located on a vehicle 7 which can also drive the nozzle housing 5.
2525
Filtrene og recirkulationssystemet kan placeres på et separat køretøj, der fremføres sammen med køretøjet 7, hvorpå huset 5 er monteret.The filters and recirculation system can be placed on a separate vehicle which is driven together with the vehicle 7 on which the housing 5 is mounted.
30 Udsugningsledningen 6 på huset 5 er forbundet med en udsugningsslange 8, der er forbundet med en cyklon 9. Cyklonen 9 er tilvirket med og er gennem en kurverist 11 forbundet med et kammer 10, hvormed et antal venturirør-stykker 12 er forbundet.The suction line 6 of the housing 5 is connected to a suction hose 8 connected to a cyclone 9. The cyclone 9 is made with and is connected through a curve grid 11 to a chamber 10, to which a number of venturi pieces 12 are connected.
.Komprimeret luft fra en kompressor 13 kan føres gennem en ledning 14 til kammeret 10, i den modsatte side af ven- 35Compressed air from a compressor 13 can be passed through a conduit 14 to the chamber 10, on the opposite side of the valve.
DK 163437 BDK 163437 B
5 turirørstykkerne 12, hvorved vacuum dannes i den øvre del af cyklonen 9. Formålet med dette vacuum er overførsel af snavset vand gennem ledningen 8 til cyklonen 9 og i forbindelse med cyklonens drift at udskille snavset vand.5, the turbine pieces 12, whereby vacuum is formed in the upper part of the cyclone 9. The purpose of this vacuum is the transfer of dirty water through the conduit 8 to the cyclone 9 and in connection with the operation of the cyclone to separate dirty water.
5 I bunden af cyklonen 9 er anbragt et filter 15 til adskillelse af forholdsvis grove partikler fra det opsamle-de, snavsede vand. En membranpumpe 16 er via en ledning 17 forbundet med udgangssiden via og via en ledning 18 10 med indgangssiden på filteret 15.5 At the bottom of the cyclone 9 is a filter 15 for separating relatively coarse particles from the collected dirty water. A diaphragm pump 16 is connected via a conduit 17 to the output side via and via a conduit 18 10 to the input side of the filter 15.
Der er anbragt en kugleventil 19 og 20 i hver af ledningerne 17 og 18. Membranpumpen 16 er forbundet med posefiltre 22 og 23 gennem en ledning 21 og to forgreninger 15 21a og 21b. Der er anbragt en ventil 24a og 24b i hver af forgreningerne.A ball valve 19 and 20 are provided in each of the conduits 17 and 18. The diaphragm pump 16 is connected to bag filters 22 and 23 through a conduit 21 and two branches 15 21a and 21b. A valve 24a and 24b is provided in each of the branches.
Det snavsede vand fra cyklonen pumpes med pumpen 16 til et af posefiltrene 22 eller 23, der opsamler partikler, 20 der er større end 3 nin.The dirty water from the cyclone is pumped with the pump 16 to one of the bag filters 22 or 23 that collect particles 20 larger than 3 nin.
En ledning 25 forbinder udgangssiden af posefiltrene til en membranpumpe 26, der gennem en ledning 27 er forbundet med et filter 28 med aktivt kul. Udgangssiden på filteret 25 28 er via en ledning 29 forbundet med en vandtank 30.A conduit 25 connects the outlet side of the bag filters to a diaphragm pump 26 connected through a conduit 27 to an activated carbon filter 28. The outlet side of the filter 25 28 is connected to a water tank 30 via a conduit 29.
Filteret 28 fjerner de fine partikler fra vandet, hvorfra det grovere materiale allerede er fjernet, hvorefter det rensede vand strømmer tilbage i tanken 30. Derfra strøm-30 mer vandet gennem røret 31 og et dobbelt filter 33 til en hydraulisk drevet, variabel forskydningspumpe 32 (forstærker) til dannelse af et ekstremt højt tryk (f.eks.Filter 28 removes the fine particles from the water from which the coarser material has already been removed, after which the purified water flows back into the tank 30. From there, the water flows through the pipe 31 and a double filter 33 to a hydraulically driven variable displacement pump 32 ( amplifier) to produce an extremely high pressure (e.g.
2200 bar). Olieforskydning ved et forholdsvist lavt tryk og en forholdsvis høj kapacitet konverteres i et stempel-35 system indeholdt i pumpen til vandforskydning ved et forholdsvist højt tryk og en forholdsvis lav kapacitet. Et sådant system er kendt og f.eks. markedsført under navnet2200 bar). Oil displacement at a relatively low pressure and a relatively high capacity is converted into a piston system contained in the pump for water displacement at a relatively high pressure and a relatively low capacity. Such a system is known and e.g. marketed under the name
DK 163437 BDK 163437 B
6 JETPAC. Forstærkerpumpen er via en ledning 34 forbundet med dysehuset 5.6 JETPAC. The amplifier pump is connected to a nozzle housing 5 via a line 34.
Ved hjælp af recirkulationssystemet, hvori en betydelig 5 del af det på banerne påsprøjtede vand føres tilbage til tanken 30, kan det daglige vandforbrug begrænses til mel- 3 lem 4 og 5 m . Med kendte spulingssystemer er det tilsva- 3 rende forbrug på mellem 20 og 25 m . En betydelig del af det løsnede gummi opsamles i filtrene 15, 22, 23 og 28 10 således, at omgivelserne ikke påvirkes i mærkbar grad.By means of the recirculation system, in which a considerable 5 of the water sprayed onto the webs is returned to the tank 30, daily water consumption can be limited to between 3 and 5 m. With known flushing systems, the corresponding consumption is between 20 and 25 m. A considerable part of the loosened rubber is collected in filters 15, 22, 23 and 28 10 so that the surroundings are not appreciably affected.
Det er yderst vigtigt at rengøringen af banen kan styres gennem det ekstremt høje tryk og højdeindstillingen af huset 5 således, at asfaltoverfladen ikke påvirkes i 15 mærkbar grad. Der påsprøjtes en vandmængde på 24,5 liter pr. minut på asfalten. Da det påsprøjtede vand fjernes, er landingsbanen altid klar til en nødlanding.It is extremely important that the cleaning of the web can be controlled through the extremely high pressure and the height adjustment of the housing 5 so that the asphalt surface is not affected to any appreciable extent. A water volume of 24.5 liters per spray is applied. minute on the tarmac. As the sprayed water is removed, the runway is always ready for an emergency landing.
Recirkulationen sikrer, at vandtanken 30 kan gøres for-20 holdsvis lille og dermed anbringes på et køretøj.The recirculation ensures that the water tank 30 can be made relatively small and thus placed on a vehicle.
Filteret 28 med aktivt kul skal rengøres med jævne mellemrum. Til dette formål er der mellem tanken 30 og et forgreningspunkt for ledningen 25 og en ledning 35 an-25 bragt i en ventil 36. Skyllesystemet har også behov for en ventil 37 i ledningen 25, en ventil 38 i ledningen 27, en ledning 39, der forbinder ledningerne 27 og 29 med en ventil 40, og en ledning 41, der forbinder ledningerne 27 og 21 med en ventil 42, en ventil 43 i ledningen 29, og 30 en ventil 42 i ledningen 27. Ved at lukke ventilerne 37, 38 og 43 og åbne ventilerne 36, 40 og 42, kan filteret 28 rengøres ved gennemskylning i modsat retning, og vandet overføres til de to posefiltre 22 og 23. Ved normal drift, anvendes altid et af posefiltrene. Ved anvendelse 35 af ventilerne 24a og 24b, er det muligt at skifte fra et posefilter til et andet, og det brugte filter kan udskiftes uden afbrydelse af arbejdet.The activated charcoal filter 28 must be cleaned at regular intervals. For this purpose, between the tank 30 and a branch point of the conduit 25 and a conduit 35 is arranged in a valve 36. The flushing system also needs a valve 37 in the conduit 25, a valve 38 in the conduit 27, a conduit 39, connecting conduits 27 and 29 to valve 40, and conduit 41 connecting conduits 27 and 21 to valve 42, valve 43 in conduit 29, and 30 to valve 42 in conduit 27. By closing valves 37, 38 and 43 and open valves 36, 40 and 42, the filter 28 can be cleaned by flushing in the opposite direction and the water is transferred to the two bag filters 22 and 23. In normal operation, one of the bag filters is always used. By using 35 of the valves 24a and 24b, it is possible to change from one bag filter to another and the used filter can be replaced without interruption of the work.
77
DK 163437 BDK 163437 B
Det beskrevne system er særdeles skånsomt over for omgivelserne, der anvendes kun en begrænset mængde vand, og asfaltoverfladen påvirkes kun i ringe omfang. Landingsbanen er altid klar til en nødlanding. Hele systemet er 5 mobilt.The system described is extremely gentle to the environment, only a limited amount of water is used, and the asphalt surface is only slightly affected. The runway is always ready for an emergency landing. The whole system is 5 mobile.
10 15 20 25 30 3510 15 20 25 30 35
Claims (9)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL8702856 | 1987-11-27 | ||
| NL8702856A NL8702856A (en) | 1987-11-27 | 1987-11-27 | DEVICE FOR CLEANING A FLAT SURFACE WITH POWERFUL WATER JETS, IN PARTICULAR FOR REMOVING RUBBER FROM LANDING TRACKS. |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| DK659788D0 DK659788D0 (en) | 1988-11-25 |
| DK659788A DK659788A (en) | 1989-05-28 |
| DK163437B true DK163437B (en) | 1992-03-02 |
| DK163437C DK163437C (en) | 1992-07-20 |
Family
ID=19850991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK659788A DK163437C (en) | 1987-11-27 | 1988-11-25 | APPLIANCES FOR CLEANING COUNTRY CIRCUITS |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0318074B2 (en) |
| AT (1) | ATE62291T1 (en) |
| DE (1) | DE3862290D1 (en) |
| DK (1) | DK163437C (en) |
| ES (1) | ES2021826B3 (en) |
| GR (1) | GR3001773T3 (en) |
| NL (1) | NL8702856A (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2655072A1 (en) * | 1989-11-24 | 1991-05-31 | Sita | Urban cleaning machine |
| CH684465A5 (en) * | 1992-02-28 | 1994-09-30 | Kaufmann Ag | Method and apparatus for removing a surface layer of a body. |
| FR2703088B1 (en) * | 1993-03-22 | 1995-06-09 | Saada | METHOD AND DEVICE FOR CLEANING A POROUS PAVEMENT. |
| FR2704781B1 (en) * | 1993-05-05 | 1995-07-28 | Colas Sa | CLEANING DEVICE, APPARATUS AND VEHICLE FOR CLEANING ROUGH SURFACES. |
| DE9314896U1 (en) * | 1993-10-02 | 1994-01-13 | Hoerger Ulrich | Floor cleaning device for cleaning surfaces with a rough or porous surface in sports and facilities |
| DE4404230A1 (en) * | 1994-02-10 | 1995-08-17 | Max Steinhart Gmbh Pflaster Un | Method of cleaning joints between pavement flagstones or ground slabs |
| DE29514554U1 (en) * | 1995-09-01 | 1995-11-16 | Hako Gmbh & Co | Mobile wet cleaning machine |
| DE19541887A1 (en) * | 1995-11-10 | 1997-05-15 | Rainer Scholz | Method and device for cleaning a roadway or other traffic surface contaminated by environmentally harmful media and / or impaired in its grip |
| WO2000020693A1 (en) * | 1998-10-02 | 2000-04-13 | Heckett Multiserv France Sa | Removal of surface markings |
| DE10037548C2 (en) | 2000-08-02 | 2002-06-20 | Airmatic Ges Umwelt & Tech Mbh | Device for cleaning traffic areas contaminated by environmentally harmful media |
| DE10042042C1 (en) | 2000-08-26 | 2002-03-21 | Umwetec Gmbh & Co Kg | Device for cleaning a roadway |
| GB0821460D0 (en) * | 2008-11-25 | 2008-12-31 | Innovative Ind Ltd | Mobile cleaning equipment |
| CN113245160B (en) * | 2021-05-28 | 2022-05-13 | 韩山师范学院 | Automatic gluey equipment of spouting of environmental protection plastic course with retrieve plastic granules function |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1327799A (en) * | 1972-11-21 | 1973-08-22 | Warwick Pump & Eng Co | Surface cleaning |
| US3959010A (en) * | 1974-09-30 | 1976-05-25 | Thompson Tank Manufacturing Company | Vortex cleaner and method of cleaning |
| DE2617635C2 (en) * | 1976-04-22 | 1978-05-11 | Woma Apparatebau Wolfgang Maasberg & Co Gmbh, 4100 Duisburg | Vacuum cleaner, in particular vacuum cleaner designed as a vehicle or mobile device |
| FR2515536B1 (en) * | 1981-11-04 | 1985-06-28 | Asnets Sarl | IMPROVEMENTS RELATING TO FLOOR CLEANING AND STRIPPING MACHINES |
| EP0121511A1 (en) * | 1983-04-05 | 1984-10-10 | Dieter Nolte | Mobile suction cleaning apparatus |
-
1987
- 1987-11-27 NL NL8702856A patent/NL8702856A/en not_active Application Discontinuation
-
1988
- 1988-10-26 DE DE8888202385T patent/DE3862290D1/en not_active Expired - Fee Related
- 1988-10-26 ES ES88202385T patent/ES2021826B3/en not_active Expired - Lifetime
- 1988-10-26 AT AT88202385T patent/ATE62291T1/en active
- 1988-10-26 EP EP88202385A patent/EP0318074B2/en not_active Expired - Lifetime
- 1988-11-25 DK DK659788A patent/DK163437C/en not_active IP Right Cessation
-
1991
- 1991-04-11 GR GR91400478T patent/GR3001773T3/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE3862290D1 (en) | 1991-05-08 |
| ES2021826B3 (en) | 1991-11-16 |
| DK659788A (en) | 1989-05-28 |
| EP0318074B2 (en) | 1996-03-20 |
| EP0318074B1 (en) | 1991-04-03 |
| NL8702856A (en) | 1989-06-16 |
| DK659788D0 (en) | 1988-11-25 |
| ATE62291T1 (en) | 1991-04-15 |
| GR3001773T3 (en) | 1992-11-23 |
| DK163437C (en) | 1992-07-20 |
| EP0318074A1 (en) | 1989-05-31 |
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