WO2009050548A2 - Equipment for the cleaning of filters in water distribution plants - Google Patents

Equipment for the cleaning of filters in water distribution plants Download PDF

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Publication number
WO2009050548A2
WO2009050548A2 PCT/IB2008/002502 IB2008002502W WO2009050548A2 WO 2009050548 A2 WO2009050548 A2 WO 2009050548A2 IB 2008002502 W IB2008002502 W IB 2008002502W WO 2009050548 A2 WO2009050548 A2 WO 2009050548A2
Authority
WO
WIPO (PCT)
Prior art keywords
filter
equipment
brush
fact
conduit
Prior art date
Application number
PCT/IB2008/002502
Other languages
French (fr)
Other versions
WO2009050548A3 (en
Inventor
Bruno Bucci
Original Assignee
Bruno Bucci
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 Bruno Bucci filed Critical Bruno Bucci
Publication of WO2009050548A2 publication Critical patent/WO2009050548A2/en
Publication of WO2009050548A3 publication Critical patent/WO2009050548A3/en

Links

Classifications

    • 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 
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/117—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for outward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
    • B01D29/6407—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element brushes
    • B01D29/6415—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element brushes with a rotary movement with respect to the filtering element
    • 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
    • B08B9/0804—Cleaning containers having tubular shape, e.g. casks, barrels, drums
    • B08B9/0808—Cleaning containers having tubular shape, e.g. casks, barrels, drums by methods involving the use of tools, e.g. by brushes, scrapers

Definitions

  • the present invention is concerned with an equipment for the cleaning of filters in water distribution plants.
  • the invention is particularly aimed at the cleaning of filters employed in the water distribution plants to irrigate gardens, parks, and small or large agricultural cultivations.
  • Such filtering elements are in general consisting of nets that, because of the rather small dimensions of the particles that constitute such sediments, present very fine meshes.
  • the problem with such filtering nets is that the sediments tend to deposit onto the net and then harden into encrustations that clog the meshes, thus blocking the flow of water to the nozzles of the irrigation devices.
  • the technical task of this invention is to present an equipment for the cleaning of filters in plants for the water distribution that allows to render automatic the cleaning of filters so that to reduce the chances of the above mentioned problems.
  • an equipment for the cleaning of filters in water distribution plants comprising: a container having an inlet passage connected to the conduit of water to be filtered, and an output passage feeding the distribution plant; a cylindrical filter located inside the container and defining a inner chamber connected to the conduit of the wate ' rt ⁇ be filtered, and an outer chamber connected to said outlet passage; at least one brush located inside said inner chamber and provided with bristles having the upper edges touching the inner surface of said cylindrical filter; motorized means to give a rotating movement to said brush such as to determine a scraping action of the bristles on the inner surface of said filter, such movement being able to remove sedimentary deposits formed on the inner surface of said filter; an outflow conduit connected with said inner chamber and controlled by shut off valves to allow the drain of the removed sedimentary deposits.
  • Figure 1 shows a schematic front view of an equipment for the cleaning of filters in a plant for the irrigation of gardens, parks, and small or large cultivations.
  • Figure 2 shows a schematic view of a variation to the equipment.
  • Figure 3 shows a schematic view in plant of the variation to the equipment in figure 2.
  • Figure 4 shows a variation of a brush that can be used in the equipments of figures 1-3.
  • (1) indicates the equipment as a whole.
  • Such equipment 1 consists of a container (2) having any shape, such as cubical or cylindrical, provided of a lower surface (3) and upper (4) identified in the following description, for the sake of convenience, as bottom (3) and cover (4).
  • the central areas of the bottom (3) and of the cover (4) are assumed to be flat and between them is interposed a cylindrical filter (5) closed at the opposing edges by the bottom (3) and by the cover (4) consisting of a net of fines meshed diving the space inside the container into two concentric rooms (6) and (7), one nested inside of the other.
  • the chamber (6) is connected, through an inlet passage (8) on the cover (4), with a conduit (9) of the irrigation water that is introduced into the chamber (6) in the direction indicated by the arrow (A).
  • the water is then transferred, through the filter (5) from the room (6) into the room (7), from which it flow out through a second passage (10) on the cover (4) to which a conduit (11) is connected directing the water in the direction (B) towards the points of distribution.
  • the passages (8) and (10) can be made in different positions than the ones indicates, but they however should fit to ensure a uniform distribution of the water through the whole surface of the filter, in order to avoid a pressure drop in the conduit (11).
  • a shaft extends longitudinally, being such shaft controlled by an electric geared motor (15).
  • the shaft (14) is rotating into a support (16) that closes sealed the conduit (13) and takes to the extending ending of the chamber (6) a cylindrical brush (17) having a diameter and a length such as the bristles turn out be scraping nearly all of the inner surface of the filter (5).
  • the functioning of the described equipment 1 is as follows: in normal operating conditions, as long as the filter (5) keeps its filtering efficiency, the geared motor (15) is inactive and the valve (21) keeps closed the outflow of water through the drain pipe (20). Therefore the water to be irrigated through the conduit (9) enters the chamber (6) and, through the filter (5), goes through the chamber (7) to reach the conduit (11) and then to the distributors.
  • the geared motor (15) is activated and the valve (21) open, in order to temporarily deflect the inflow of water coming from the conduit (9) through the conduit (13) into the drain pipe (2).
  • the valve (21) is closed and the geared motor (15) is stopped so that the delivery of water to the distributing nozzles is resumed. Unscrewing the joint (19) it is possible to remove the valve (21) to perform periodical cleaning and maintenance, in order to eliminate the presence of sedimentary deposits.
  • the described equipment therefore fulfills the declared goals.
  • the outflow conduit (13) can be placed on the side of the shaft (14), that is decentered with respect to this, albeit this remaining inside the filter (5).
  • Figures 2 and 3 show a form of realization where the elements or equal parts, or functionally identical to the ones described above in relation to the figure 1 version are indicated by the same reference number.
  • the brush 17 has a smaller diameter than the one of the filter (5) and at its lower edge is coaxially coupled a pinion (22).
  • the brush (17) is revolvingly supported at the edge by an arm (23) that extends radially from the shaft (14) of an activating geared motor (15).
  • the pinion (22) is engaged with a pronged wheel (24) with inner teeth, attached at the bottom (3) concentrically to the filter (5), and the diameter of the brush (17) is selected so that the bristles are in scraping contact with the inner surface of the filter (5).
  • the realization of the figures 2 and 3 can be modified with the goal of achieving a better cleaning effect of the filter by adding one of more brushes of equal dimensions, set up on arms (23) radially connected to the shaft (14) and angularly equidistant between one another. This way the pinions (22) engaged with the pronged wheel (24) and the brushes (17) create a satellite system revolving inside the filter (5).
  • the drain pipe (13) on which is located the valve (21) is decentralized with respect to the shaft (14). It is however understood that it can be placed coaxially as showed in the version in figure 1.
  • Figure 4 shows a realization form of the brush (17) where the bristles, without covering the whole cylindrical surface, are placed on a cylindrical helicoids (25). This way the scraping action of the bristles can develop on only in a tangential direction, but also along an axial component.
  • the equipment is controlled by a irrigation programmer set-up to activate the equipment periodically with pre-settable delays, or provided with a manual button that can activate it on demand.

Abstract

Equipment for the cleaning of filters in water distribution plants, in particular for the irrigation of gardens, parks, and small or large agricultural cultivations, characterized by the fact that it comprises: a container (2) having a inlet passage connected to the conduit of water to be filtered, and an output passage (10) to feed the distribution plant; a cylindrical filter (5) located inside the container (2) and defining a inner chamber (6) connected to the conduit (9) of the water to be filtered, and an outer chamber (7) connected to said outlet passage (10); at least one brush (17) located inside said inner chamber (6) and provided with bristles having the upper edges touching the inner surface of said cylindrical filter (5); motorized means (15) to give a rotating movement to said brush (17) such as to determine a scraping action of the bristles on the inner surface of said filter, such movement being able to remove sedimentary deposits formed on the inner surface of said filter; an outflow conduit (13, 18, 20) connected with said inner chamber (6) and controlled by shut off valves (21) to allow the drain of the removed sedimentary deposits.

Description

Equipment for the cleaning of filters in water distribution plants Description
The present invention is concerned with an equipment for the cleaning of filters in water distribution plants. The invention is particularly aimed at the cleaning of filters employed in the water distribution plants to irrigate gardens, parks, and small or large agricultural cultivations.
As known, for irrigations systems as the ones mentioned above, it is popular the use of water that is drawn, by means of suction pumps, from groundwater, streams or rivers and sent through a tubular plant to distribution devices that provide in multiple ways (through atomizing, showering, or dropping nozzles) to the fragmentation of the irrigation jets. Since the water drawn by suction pumps often carries along sedimentary particles, filtering elements apt to intercept such particles are installed along the tubular plants in order to avoid the clogging of the irrigation devices and the spreading of sediments on the cultivations.
Such filtering elements are in general consisting of nets that, because of the rather small dimensions of the particles that constitute such sediments, present very fine meshes. The problem with such filtering nets is that the sediments tend to deposit onto the net and then harden into encrustations that clog the meshes, thus blocking the flow of water to the nozzles of the irrigation devices.
To avoid such inconvenience, the cleaning of the filters is performed mostly manually dismantling the filters and performing manual brushing on them. Such operations are however very labor-intensive and entail high costs that negatively impact of the maintenance expenses, thus making the plants uneconomical. The technical task of this invention is to present an equipment for the cleaning of filters in plants for the water distribution that allows to render automatic the cleaning of filters so that to reduce the chances of the above mentioned problems. With respect to such technical task, it is the goal of the present invention to produce an equipment for the cleaning of filters, especially of those used in small plants such as gardens and small cultivations.
Such task and goals are fulfilled by means of an equipment for the cleaning of filters in water distribution plants, in particular for the irrigations of gardens, parks and small cultivations in general, comprising: a container having an inlet passage connected to the conduit of water to be filtered, and an output passage feeding the distribution plant; a cylindrical filter located inside the container and defining a inner chamber connected to the conduit of the wate'rtό be filtered, and an outer chamber connected to said outlet passage; at least one brush located inside said inner chamber and provided with bristles having the upper edges touching the inner surface of said cylindrical filter; motorized means to give a rotating movement to said brush such as to determine a scraping action of the bristles on the inner surface of said filter, such movement being able to remove sedimentary deposits formed on the inner surface of said filter; an outflow conduit connected with said inner chamber and controlled by shut off valves to allow the drain of the removed sedimentary deposits. Further benefits and features of the present invention will result more evident by the following description of two preferred, but not exclusive, forms of execution that are illustrated in the attached figures.
Figure 1 shows a schematic front view of an equipment for the cleaning of filters in a plant for the irrigation of gardens, parks, and small or large cultivations. Figure 2 shows a schematic view of a variation to the equipment.
Figure 3 shows a schematic view in plant of the variation to the equipment in figure 2.
Figure 4 shows a variation of a brush that can be used in the equipments of figures 1-3.
With reference to the figure 1, (1) indicates the equipment as a whole. Such equipment 1 consists of a container (2) having any shape, such as cubical or cylindrical, provided of a lower surface (3) and upper (4) identified in the following description, for the sake of convenience, as bottom (3) and cover (4). The central areas of the bottom (3) and of the cover (4) are assumed to be flat and between them is interposed a cylindrical filter (5) closed at the opposing edges by the bottom (3) and by the cover (4) consisting of a net of fines meshed diving the space inside the container into two concentric rooms (6) and (7), one nested inside of the other.
The chamber (6) is connected, through an inlet passage (8) on the cover (4), with a conduit (9) of the irrigation water that is introduced into the chamber (6) in the direction indicated by the arrow (A). The water is then transferred, through the filter (5) from the room (6) into the room (7), from which it flow out through a second passage (10) on the cover (4) to which a conduit (11) is connected directing the water in the direction (B) towards the points of distribution. The passages (8) and (10) can be made in different positions than the ones indicates, but they however should fit to ensure a uniform distribution of the water through the whole surface of the filter, in order to avoid a pressure drop in the conduit (11). In the part of the bottom (3) delimited by the cylindrical filter (5) is performed a third opening (12) from which a drain conduit (13) departs coaxially to the filter (5). Through the conduit (13), and coaxially to it, a shaft extends longitudinally, being such shaft controlled by an electric geared motor (15). The shaft (14) is rotating into a support (16) that closes sealed the conduit (13) and takes to the extending ending of the chamber (6) a cylindrical brush (17) having a diameter and a length such as the bristles turn out be scraping nearly all of the inner surface of the filter (5).
From the conduit (13) departs a T-shaped lock (18) to which is connected, by means of a ring joint (19) or similar, a drain pipe (20) along which is located a valve (21) for the opening and closing of the pipe (13).
The functioning of the described equipment 1 is as follows: in normal operating conditions, as long as the filter (5) keeps its filtering efficiency, the geared motor (15) is inactive and the valve (21) keeps closed the outflow of water through the drain pipe (20). Therefore the water to be irrigated through the conduit (9) enters the chamber (6) and, through the filter (5), goes through the chamber (7) to reach the conduit (11) and then to the distributors.
When the exit flow of the water reaches values that are judged insufficient because the clogging of the filter (5) due the sedimentary deposits on the inner surface of this, the geared motor (15) is activated and the valve (21) open, in order to temporarily deflect the inflow of water coming from the conduit (9) through the conduit (13) into the drain pipe (2). With the rotation of the brush (17) the sediments deposited on the filter (5) are removed by the scraping effect of the brush (17) on the filter and conveyed by the input flow though the drain pipe (20). At the end of the cleaning phase of the filter (5), the valve (21) is closed and the geared motor (15) is stopped so that the delivery of water to the distributing nozzles is resumed. Unscrewing the joint (19) it is possible to remove the valve (21) to perform periodical cleaning and maintenance, in order to eliminate the presence of sedimentary deposits.
The described equipment therefore fulfills the declared goals. In the practical actuation of the invention, several variants and modifications are possible, all of them part of the inventive core disclosed in the following claims. Thus, as an example, the outflow conduit (13) can be placed on the side of the shaft (14), that is decentered with respect to this, albeit this remaining inside the filter (5).
Figures 2 and 3 show a form of realization where the elements or equal parts, or functionally identical to the ones described above in relation to the figure 1 version are indicated by the same reference number. In such version, the brush 17 has a smaller diameter than the one of the filter (5) and at its lower edge is coaxially coupled a pinion (22). The brush (17) is revolvingly supported at the edge by an arm (23) that extends radially from the shaft (14) of an activating geared motor (15). The pinion (22) is engaged with a pronged wheel (24) with inner teeth, attached at the bottom (3) concentrically to the filter (5), and the diameter of the brush (17) is selected so that the bristles are in scraping contact with the inner surface of the filter (5).
The force of engagement of the pinion (22) on the pronged wheel (24), the brush (17) performs an epicycle path that determines a relative path between the bristles of the brush (17) and the filter (5), and thus an efficient action of scraping and removal of the deposited sediments. The realization of the figures 2 and 3 can be modified with the goal of achieving a better cleaning effect of the filter by adding one of more brushes of equal dimensions, set up on arms (23) radially connected to the shaft (14) and angularly equidistant between one another. This way the pinions (22) engaged with the pronged wheel (24) and the brushes (17) create a satellite system revolving inside the filter (5).
In the figures 2 and 3 the drain pipe (13) on which is located the valve (21) is decentralized with respect to the shaft (14). It is however understood that it can be placed coaxially as showed in the version in figure 1.
Figure 4 shows a realization form of the brush (17) where the bristles, without covering the whole cylindrical surface, are placed on a cylindrical helicoids (25). This way the scraping action of the bristles can develop on only in a tangential direction, but also along an axial component.
According to a further variation of the invention, the equipment is controlled by a irrigation programmer set-up to activate the equipment periodically with pre-settable delays, or provided with a manual button that can activate it on demand.

Claims

Claims
1) Equipment for the cleaning of filters in water distribution plants, in particular for the irrigation of gardens, parks, and small or large agricultural cultivations, characterized by the fact that it comprises: a container (2) having a inlet passage connected to the conduit of water to be filtered, and an output passage (10) to feed the distribution plant; a cylindrical filter (5) located inside the container (2) and defining a inner chamber (6) connected to the conduit (9) of the water to be filtered, and an outer chamber (7) connected to said outlet passage (10); at least one brush (17) located inside said inner chamber (6) and provided with bristles having the upper edges touching the inner surface of said cylindrical filter (5); motorized means (15) to give a rotating movement to said brush (17) such as to determine a scraping action of the bristles on the inner surface of said filter, such movement being able to remove sedimentary deposits formed on the inner surface of said filter; an outflow conduit (13, 18, 20) connected with said inner chamber (6) and controlled by shut off valves (21) to allow the drain of the removed sedimentary deposits.
2) Equipment as in claim 1 characterized by the fact that it comprises a cylindrical brush (17) coaxial to the filter (5) and having diameter and length such as the bristles are in scraping contact on the inner surface of the filter.
3) Equipment as in claim 2 characterized by the fact that said brush (17) is coupling on an activating shaft (14) that extends inwards or outwards of said outflow conduit (13) controlled by shut off valves (21).
4) Equipment as in claim 1 characterized by the fact that it comprises a brush (17) having a smaller diameter than the one of the cylindrical filter (5) and having a lower edge to which is coaxially coupled a pinion (22), and being the brush's diameter of such length that the bristles are in scraping contact on the inner surface of said filter, also being the brush revolvingly supported by an arm (23) that connects radially to the shaft of a geared motor (15) that is coaxial to said filter (5), and being said pinion (22) engaged with a pronged wheel with inner prongs (24) coaxial to said shaft (14) so that is gives to said pinion (22) an epicyclical movement in order to determine a scraping action of the brush (17) on the inner surface of said filter (5).
5) Equipment as per the claims 1-4 characterized by the fact that said cylindrical brush (17) comprises brushes located along a cylindrical helicoid.
6) Equipment as per the claims 1-5 characterized by the fact that it is controlled by a irrigation programmer preset to manage the activation of the equipment cyclically and at preset time lapses.
7) Equipment as per the claims 1-5 characterized by the fact that it is controlled by a irrigation programmer provided with a button to activate manually on demand the equipment regardless of the programming cycle.
8) Equipment for the cleaning of filters for water distribution plants, in particular to irrigate gardens, parks, and small or large cultivations in general, according to that can be deduced by the previous description and by the attached drawings.
PCT/IB2008/002502 2007-10-18 2008-09-26 Equipment for the cleaning of filters in water distribution plants WO2009050548A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000699A ITBO20070699A1 (en) 2007-10-18 2007-10-18 APPLIANCE FOR CLEANING FILTERS IN WATER DISTRIBUTION SYSTEMS
ITBO2007A000699 2007-10-18

Publications (2)

Publication Number Publication Date
WO2009050548A2 true WO2009050548A2 (en) 2009-04-23
WO2009050548A3 WO2009050548A3 (en) 2009-08-06

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PCT/IB2008/002502 WO2009050548A2 (en) 2007-10-18 2008-09-26 Equipment for the cleaning of filters in water distribution plants

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WO (1) WO2009050548A2 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110061821A (en) * 2009-12-02 2011-06-10 엘지전자 주식회사 A dishwasher
KR20110109343A (en) * 2010-03-31 2011-10-06 엘지전자 주식회사 A dishwasher and a control method the same
CN108245966A (en) * 2018-01-03 2018-07-06 邯郸钢铁集团有限责任公司 A kind of small pipeline is from pure and impure ring water filter
CN108383277A (en) * 2018-03-15 2018-08-10 沈阳工业大学 A kind of sewage separating device
CN109604278A (en) * 2018-11-28 2019-04-12 陆沈杰 It is a kind of for cleaning the pond of kitchenware
CN111151533A (en) * 2019-12-26 2020-05-15 山东东山新驿煤矿有限公司 Coal mining formula dryer of being convenient for to clear up
CN111604339A (en) * 2020-04-24 2020-09-01 陈艳 Cleaning equipment for paint coating barrel
CN115417541A (en) * 2022-08-25 2022-12-02 桑圣洁 Energy-saving sewage treatment device and method

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DE52496C (en) * W. BERKEFELD in Celle Rinsing and cleaning device for filters with tubular filter bodies
FR5530E (en) * 1905-03-22 1906-05-02 Charles Constant Leclaire Filter for automatic and continuous formation and evacuation of solid deposits
DE728947C (en) * 1935-09-15 1942-12-07 Hugo Laderer Fine slot filter for gases and liquids
GB1093016A (en) * 1963-11-11 1967-11-29 Georges Zwicky Improvements in or relating to filtering apparatus
DE7129877U (en) * 1972-06-29 Boening M Filter device with rotating brushes for continuous cleaning and self-cleaning of all liquids
DE3341666A1 (en) * 1983-11-18 1985-05-30 Kurt 5203 Much Sistig Apparatus for continuous filtration of liquids laden with solids
EP0349744A2 (en) * 1988-07-08 1990-01-10 Hein, Lehmann Trenn- und Fördertechnik GmbH Slit tube filter
EP1078903A2 (en) * 1999-08-23 2001-02-28 Suiko Kinzoku Kabushiki Kaisha Human waste treatment system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE52496C (en) * W. BERKEFELD in Celle Rinsing and cleaning device for filters with tubular filter bodies
DE7129877U (en) * 1972-06-29 Boening M Filter device with rotating brushes for continuous cleaning and self-cleaning of all liquids
FR5530E (en) * 1905-03-22 1906-05-02 Charles Constant Leclaire Filter for automatic and continuous formation and evacuation of solid deposits
DE728947C (en) * 1935-09-15 1942-12-07 Hugo Laderer Fine slot filter for gases and liquids
GB1093016A (en) * 1963-11-11 1967-11-29 Georges Zwicky Improvements in or relating to filtering apparatus
DE3341666A1 (en) * 1983-11-18 1985-05-30 Kurt 5203 Much Sistig Apparatus for continuous filtration of liquids laden with solids
EP0349744A2 (en) * 1988-07-08 1990-01-10 Hein, Lehmann Trenn- und Fördertechnik GmbH Slit tube filter
EP1078903A2 (en) * 1999-08-23 2001-02-28 Suiko Kinzoku Kabushiki Kaisha Human waste treatment system

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110061821A (en) * 2009-12-02 2011-06-10 엘지전자 주식회사 A dishwasher
KR101633933B1 (en) * 2009-12-02 2016-06-27 엘지전자 주식회사 A dishwasher
KR20110109343A (en) * 2010-03-31 2011-10-06 엘지전자 주식회사 A dishwasher and a control method the same
KR101645040B1 (en) * 2010-03-31 2016-08-02 엘지전자 주식회사 A dishwasher and a control method the same
US9642510B2 (en) 2010-03-31 2017-05-09 Lg Electronics Inc. Dishwasher and control method thereof
CN108245966A (en) * 2018-01-03 2018-07-06 邯郸钢铁集团有限责任公司 A kind of small pipeline is from pure and impure ring water filter
CN108383277A (en) * 2018-03-15 2018-08-10 沈阳工业大学 A kind of sewage separating device
CN109604278A (en) * 2018-11-28 2019-04-12 陆沈杰 It is a kind of for cleaning the pond of kitchenware
CN109604278B (en) * 2018-11-28 2021-08-27 陆沈杰 Water tank for cleaning kitchen tableware
CN111151533A (en) * 2019-12-26 2020-05-15 山东东山新驿煤矿有限公司 Coal mining formula dryer of being convenient for to clear up
CN111604339A (en) * 2020-04-24 2020-09-01 陈艳 Cleaning equipment for paint coating barrel
CN111604339B (en) * 2020-04-24 2021-12-03 陈艳 Cleaning equipment for paint coating barrel
CN115417541A (en) * 2022-08-25 2022-12-02 桑圣洁 Energy-saving sewage treatment device and method
CN115417541B (en) * 2022-08-25 2023-09-01 深圳市瑞清环保科技有限公司 Energy-saving sewage treatment device and method

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Publication number Publication date
ITBO20070699A1 (en) 2009-04-19
WO2009050548A3 (en) 2009-08-06

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