EP0937510A1 - Verfahren und Vorrichtung zum Waschen von Müllbehältern auf einem Fahrzeug - Google Patents
Verfahren und Vorrichtung zum Waschen von Müllbehältern auf einem Fahrzeug Download PDFInfo
- Publication number
- EP0937510A1 EP0937510A1 EP98830080A EP98830080A EP0937510A1 EP 0937510 A1 EP0937510 A1 EP 0937510A1 EP 98830080 A EP98830080 A EP 98830080A EP 98830080 A EP98830080 A EP 98830080A EP 0937510 A1 EP0937510 A1 EP 0937510A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- station
- container
- water
- tank
- sludge
- 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.)
- Granted
Links
- 238000005406 washing Methods 0.000 title claims abstract description 57
- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 76
- 238000002156 mixing Methods 0.000 claims abstract description 35
- 239000000126 substance Substances 0.000 claims abstract description 10
- 241000894006 Bacteria Species 0.000 claims abstract description 6
- 230000008030 elimination Effects 0.000 claims abstract description 5
- 238000003379 elimination reaction Methods 0.000 claims abstract description 5
- 239000010802 sludge Substances 0.000 claims description 29
- 238000010908 decantation Methods 0.000 claims description 24
- 238000009825 accumulation Methods 0.000 claims description 14
- 238000000746 purification Methods 0.000 claims description 10
- 230000003311 flocculating effect Effects 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 7
- 230000018044 dehydration Effects 0.000 claims description 5
- 238000006297 dehydration reaction Methods 0.000 claims description 5
- 238000011049 filling Methods 0.000 claims description 4
- 210000000056 organ Anatomy 0.000 claims description 2
- 238000005192 partition Methods 0.000 claims description 2
- 239000008213 purified water Substances 0.000 claims 2
- 239000002699 waste material Substances 0.000 abstract description 6
- 238000011144 upstream manufacturing Methods 0.000 abstract description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000003643 water by type Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007970 homogeneous dispersion Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 230000000135 prohibitive effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
- B65F7/00—Cleaning or disinfecting devices combined with refuse receptacles or refuse vehicles
- B65F7/005—Devices, mounted on refuse collecting vehicles, for cleaning or disinfecting refuse receptacles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/0821—Handling or manipulating containers, e.g. moving or rotating containers in cleaning devices, conveying to or from cleaning devices
- B08B9/0826—Handling or manipulating containers, e.g. moving or rotating containers in cleaning devices, conveying to or from cleaning devices the containers being brought to the cleaning device
Definitions
- the present invention relates to a method for washing trash and garbage containers on a vehicle, comprising the phases exposed in the preamble to claim 1. Also subject of the invention is a device for washing trash and garbage receptacles mounted on a vehicle, comprising the characteristics expressed in the preamble to claim 12.
- the invention finds particular use in the sector of public services, to wash the receptacles serving to contain trash and garbage.
- Washing devices of this sort generally comprise a first tank of considerable size, filled with clean water, possibly with additives mixed therein, connected to a washing station by means of the pipelines of a usual hydraulic circuit.
- the washing station comprises a washing chamber set to receive the containers to be washed and a series of dispensing nozzles distributed within the washing chamber itself.
- the container introduced into the washing chamber is subjected to one or more jets of water exiting the dispensing nozzles under high pressure.
- the washing station is in turn connected, also hydraulically, to a second empty tank, identical to the first one both in shape and size, set to contain the waste water resulting from the washing operations.
- the receptacle Once the receptacle has been washed, it is returned to the collection station and the remaining turbid water obtained from the wash is injected into the second tank. At the end of the work shift, entailing the performance of a certain number of washing cycles, the first tank is empty and the second tank is full of turbid water.
- This type of device for washing trash and garbage containers presents a first problem linked closely to the transport of large masses of water of considerable weight. This makes it necessary to use a vehicle so structured and dimensioned as easily to withstand the stresses deriving from the presence of such loads.
- washing devices operating with water recirculation have been proposed.
- water is recovered during the washing operation and is purified by means of decantation and/or filtration to be re-used for subsequent washing operations.
- the object of the present invention is substantially to solve the problems present in the prior art, proposing a washing method and device which, whilst presenting a very simple structure with low manufacturing cost, allow excellent purification of the recycled water even while the vehicle travels.
- a device for washing trash and garbage containers mounted on a vehicle, characterised in that it comprises the features expressed in the characterising part of claim 12.
- the number 1 indicates in its entirety a device mounted on a vehicle for washing trash and garbage containers.
- the device 1 comprises at least a washing station 2 engaged on the chassis of a vehicle, not shown because it is not relevant for the purposes of the invention.
- a hydraulic circuit 3 fed by at least one tank 4 set to contain water whereto may be added surface-active compounds or other suitable additives. More in particular, from the tank 4 extends a delivery pipeline 5 connected to dispensing means 6 positioned in the washing station 2.
- the tank 41 having indicatively a total capacity of 800-1000 litres can be filled for instance with 600 litres of water, or in any case with a quantity of water indicatively corresponding to that dispensed to wash at least thirty trash or garbage containers.
- the dispensing means 6 comprise a series of dispensing nozzles 7 distributed on the inner walls and oriented towards the centre of a washing chamber 2a comprised in the washing station 2.
- the washing chamber 2a is suited to receive at least one trash or garbage container, indicated by the dashed line with the number 8, to be subjected to the washing treatment.
- the container 8 is picked up and positioned in the washing chamber 2a by suitable gripping means set on the vehicle which, when washing is complete, also disengage the container itself from the washing station to reposition it on the ground.
- such collecting means 10 comprise one or more collecting sumps 11 present on a base wall 12 of the washing chamber 2a, wherein the turbid water obtained from washing the containers 8 is deposited.
- the collecting means 10 further comprise a second pump 13 associated to a first return pipeline 14 extending from the collecting sumps 11.
- the second pump 13 intakes the turbid water deposited in the collecting sumps 11 and sends it into the first return pipeline 14, whereon can be advantageously installed an interchangeable filter 15 which retains the remaining solid bodies that passed through the grids 12 of the collecting sumps 11.
- the device 1 further comprises at least one purifying unit 16 operatively interposed between the collecting means 10 and the tank 4, to purify the turbid water coming from the collecting means themselves, as well as recirculation means 17 to send into the tank 4 the water purified by the purification unit 16.
- the purification unit 16 essentially comprises at least one settling station 18, as well as a mixing station 19 operatively interposed between the collecting means 10 and the settling station 18 to add and mix flocculating substances in the water coming from the collecting means.
- the mixing station 19 essentially comprises at least a first and a second container 20, 21, having each a capacity corresponding essentially to one fourth of the quantity of water provided in the tank 4.
- To each mixing container 20, 21 is associated at least a dosing meter 22, 23 to inject at least one flocculating substance into the turbid water conveyed into the respective container 20, 21.
- a mixing organ 24, 25 designed to maintain the turbid water agitated in order to guarantee a homogeneous dispersion of the flocculating substance injected by the respective dosing meter 22, 23.
- selecting means 26 to alternate mixing between the first and the second container. More in particular, the selection means 26 operate in such a way that the mixing phase is performed in the second mixing container 21 while the first mixing container 20 is being emptied and subsequently filled, and vice versa.
- the selection means 26 respectively comprise for the first and the second container 20, 21 an inlet valve 27, 28, an outlet valve 29, 30 and a level sensor 31, 32.
- the inlet valve 27 of the first container 20 When the second pump 13 intakes the turbid water from the collecting sumps 11 to send it to the mixing unit 19, the inlet valve 27 of the first container 20 is in an open condition, whereas the remaining valves 28, 29 and 30 are in a closed condition. The turbid water is thus deposited into the first container 20.
- the level indicator 31 When the water placed in the first container 20 reaches a pre-set level of maximum filling, the level indicator 31 emits a signal as a result whereof the inlet valve 27 of the first container 20 is commanded shut, and the inlet valve 28 of the second container 21 is commanded open, thereby sending thereto the water coming from the second pump 13. While the second container 21 is being filled, in the first container 20 the flocculating substances previously introduced upon the action of the respective dosing meter 22 are completely mixed.
- the outlet valve 29 of the first container 20 is commanded open to allow the first container to be emptied.
- the intervention of the level indicator 32 shall determine, for the second container itself, the execution of the same mixing and emptying cycle already described for the first container 20.
- the emptying of the first and of the second mixing container 20, 21 is preferably managed by a recirculation pump 33 comprised among the recirculation means 17.
- the recirculation pump 33 started simultaneously with the opening of the outlet valves 29, 30, thrusts the water through the settling station 18 to inject it into a main recirculation pipeline connected to the tank 4.
- a decantation phase is performed, whereupon the impurities present in the water are separated from the water itself, precipitating in the form of sludge.
- the settling station 18 is provided with means to inhibit the water from mixing when the vehicle travels.
- the decantation phase can therefore advantageously be effected at least partially also after disengagement of the container 8 from the washing station 2 and resumption of travel by the vehicle to reach the next container to be washed.
- the aforesaid means to inhibit mixing essentially provide for the settling station 18 to comprise at least one hermetically sealed decantation container 35 presenting at its top at least one intake inlet 36 communicating with the collecting means 11, with interposition of the mixing station 19, and at least one discharge outlet 37 that communicates with the tank 4 through the recirculation pipeline 34.
- the decantation container 35 preferably presents capacity essentially ranging between 1 ⁇ 2 and 2/ 3 of the quantity of water placed in the tank 4.
- the settling container 35 With the aid of the recirculation pump 33, preferably installed upstream of the decantation container 35, the settling container itself is kept essentially full of water during the entire settling phase, preventing the accelerations and jolts inevitably brought about while the vehicle travels from causing the water to mix, thereby hampering proper decantation.
- the liquid inserted into the settling container 35 separates through density difference in two distinct parts: all the impurities linked to the flocculating substances settle in the form of sludge to the bottom of the container 35, whereas clarified water remains in the upper part of the container.
- the means to inhibit mixing preferably comprise at least a partition baffle 38 which subdivides the inner space of the decantation container 35 into an inlet chamber 39 communicating with the intake inlet 36, an outlet chamber 40 connected to the discharge outlet 37, and a conveying vat 41, placed at the base of the container itself, which places the inlet chamber 39 in communication with the outlet chamber 40.
- the conveying vat 41 presents walls converging downward, in the direction of an accumulation sump 42 positioned below the conveying vat itself.
- the decanted sludge is thus collected in the conveying vat 41 and thereby conveyed into the accumulation sump 42.
- the sludge is periodically extracted from the accumulation collector 42 to be transferred into a collecting tank 43.
- a pump 44 or equivalent transfer means are provided, operating on a connecting pipeline extending between the bottom of the accumulation sump 42 and the collecting tank 43.
- the transfer pump 44 is started and shut off selectively upon command from sensor means 46 when the sludge in the sump 42 reaches respectively a maximum threshold level and a minimum threshold level.
- the sensor means 46 can advantageously comprise at least a first photo-electric sensor 47 operating through at least one transparent portion 48 of the sump 42 in correspondence with the maximum threshold level, to command the transfer pump 44 to start operating when the sludge intercepts a light beam emitted by the first sensor itself.
- the transparent portion 48 is further operated on by at least a second photo-electric sensor 49 positioned in correspondence with the minimum threshold level, to command the transfer pump 44 to shut down when the sludge frees the light beam emitted by the second sensor itself.
- the clarified water present in the outlet chamber 40 is thrust into the recirculation pipeline 34 through the discharge outlet 37 simultaneously with the injection of new liquid by the recirculation pump 33, during a new emptying phase of one of the mixing containers 20, 21.
- an auxiliary filter 50 In proximity with the discharge outlet 37 can also be mounted an auxiliary filter 50 able to retain any particles which may still be present in the water.
- the clarified water is then sent into the tank 4 to be used again in subsequent washing phases.
- a unit 51 for the elimination of bacteria essentially comprising at least a UVC lamp placed in a shielding case and set up to irradiate the water flowing towards the tank itself thereby completely neutralising the bacterial charge present in the water itself.
- the sludge collection tank 43 can advantageously present a sufficient capacity to allow the accumulation of the sludge produced during at least one full work shift.
- the sludge extracted from the decantation container 35 may be subjected to a dehydration and compaction phase through the removal of the water present therein.
- the collecting tank 43 can periodically be emptied when the sludge therein reaches a pre-set maximum level of filling.
- the sludge drawn from the collecting tank 43 is sent along a delivery pipeline 53 connected to a filtration unit 54 set to perform the aforesaid dehydration phase.
- Such filtration unit 54 can advantageously comprise a filter press, not described in detail herein since it is known and conventional in itself.
- the water extracted from the sludge in the filter press 54 is conveyed into a collecting sump 55 communicating with the recirculation pipeline 34 upstream of the bacteria-eliminating unit 51, thereby being sent back into tank 4 after neutralisation of the bacterial charge present therein.
- the present invention fully attains the proposed objects.
- the means adopted in the subject device, and particularly in the settling station associated thereto enable to effect decantation in an extremely effective manner, obtaining excellent clarification of the washing water in spite of the fact that the decantation takes place on a moving vehicle.
- a greater freedom of design is also attained for the devices to be installed on the vehicles, as it is no longer necessary to take into account the baricentre shifts entailed by the displacement of large masses of water.
- the residual water can advantageously be discharged into the usual sewer lines, without requiring discharge in a tip with the costs deriving therefrom.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES98830080T ES2149635T3 (es) | 1998-02-19 | 1998-02-19 | Metodo y dispositivo para el lavado de contenedores de basura en un vehiculo. |
DE1998600160 DE69800160T2 (de) | 1998-02-19 | 1998-02-19 | Verfahren und Vorrichtung zum Waschen von Müllbehältern auf einem Fahrzeug |
EP19980830080 EP0937510B1 (de) | 1998-02-19 | 1998-02-19 | Verfahren und Vorrichtung zum Waschen von Müllbehältern auf einem Fahrzeug |
GR20000401503T GR3033804T3 (en) | 1998-02-19 | 2000-06-28 | Method and device for washing rubbish bins on a vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19980830080 EP0937510B1 (de) | 1998-02-19 | 1998-02-19 | Verfahren und Vorrichtung zum Waschen von Müllbehältern auf einem Fahrzeug |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0937510A1 true EP0937510A1 (de) | 1999-08-25 |
EP0937510B1 EP0937510B1 (de) | 2000-05-24 |
Family
ID=8236546
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19980830080 Expired - Lifetime EP0937510B1 (de) | 1998-02-19 | 1998-02-19 | Verfahren und Vorrichtung zum Waschen von Müllbehältern auf einem Fahrzeug |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0937510B1 (de) |
DE (1) | DE69800160T2 (de) |
ES (1) | ES2149635T3 (de) |
GR (1) | GR3033804T3 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001019706A1 (de) * | 1999-09-15 | 2001-03-22 | Dtg Gmbh Development & Technology | Waschfahrzeug für abfallsammelbehälter |
WO2006117103A1 (de) * | 2005-05-02 | 2006-11-09 | Klaus Storch | Vorrichtung zum waschen und/oder reinigen von mülltonnen und/oder abfallbehältern mittels eines auf einem fahrzeug angeordneten wasch-/reiningungssystems |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105903668A (zh) * | 2016-04-29 | 2016-08-31 | 中铁建大桥工程局集团第四工程有限公司 | 一种混凝土搅拌站废弃物料的处理方法 |
DE102016012852A1 (de) * | 2016-10-27 | 2018-05-03 | Mohn Media Mohndruck GmbH | Verfahren zur Reinigung von Feuchtmitteln und Feuchtmittel-Reinigungsvorrichtung für eine Druckmaschine |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0075037A1 (de) * | 1981-09-21 | 1983-03-30 | GABLER GmbH & Co., KG. | Mülltonnen-Waschfahrzeug |
JPH02157004A (ja) * | 1988-12-08 | 1990-06-15 | Maruwa:Kk | 耐衝撃沈殿槽 |
FR2714897A1 (fr) * | 1994-01-11 | 1995-07-13 | Renaudineau Georges Christian | Dispositif tracté et autonome pour le nettoyage sous haute et basse pression des containers. |
-
1998
- 1998-02-19 DE DE1998600160 patent/DE69800160T2/de not_active Expired - Lifetime
- 1998-02-19 ES ES98830080T patent/ES2149635T3/es not_active Expired - Lifetime
- 1998-02-19 EP EP19980830080 patent/EP0937510B1/de not_active Expired - Lifetime
-
2000
- 2000-06-28 GR GR20000401503T patent/GR3033804T3/el unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0075037A1 (de) * | 1981-09-21 | 1983-03-30 | GABLER GmbH & Co., KG. | Mülltonnen-Waschfahrzeug |
JPH02157004A (ja) * | 1988-12-08 | 1990-06-15 | Maruwa:Kk | 耐衝撃沈殿槽 |
FR2714897A1 (fr) * | 1994-01-11 | 1995-07-13 | Renaudineau Georges Christian | Dispositif tracté et autonome pour le nettoyage sous haute et basse pression des containers. |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 14, no. 412 (C - 0755) 6 September 1990 (1990-09-06) * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001019706A1 (de) * | 1999-09-15 | 2001-03-22 | Dtg Gmbh Development & Technology | Waschfahrzeug für abfallsammelbehälter |
WO2006117103A1 (de) * | 2005-05-02 | 2006-11-09 | Klaus Storch | Vorrichtung zum waschen und/oder reinigen von mülltonnen und/oder abfallbehältern mittels eines auf einem fahrzeug angeordneten wasch-/reiningungssystems |
Also Published As
Publication number | Publication date |
---|---|
GR3033804T3 (en) | 2000-10-31 |
EP0937510B1 (de) | 2000-05-24 |
DE69800160T2 (de) | 2000-09-28 |
DE69800160D1 (de) | 2000-06-29 |
ES2149635T3 (es) | 2000-11-01 |
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