EP3969757B1 - Vorrichtung zum aufsaugen von flüssigkeit vom boden - Google Patents

Vorrichtung zum aufsaugen von flüssigkeit vom boden Download PDF

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Publication number
EP3969757B1
EP3969757B1 EP20724179.5A EP20724179A EP3969757B1 EP 3969757 B1 EP3969757 B1 EP 3969757B1 EP 20724179 A EP20724179 A EP 20724179A EP 3969757 B1 EP3969757 B1 EP 3969757B1
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EP
European Patent Office
Prior art keywords
pump
enclosure
liquid
suction
plane
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EP20724179.5A
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English (en)
French (fr)
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EP3969757A1 (de
Inventor
Guy Delaisse
Erik GUILLEMIN
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AMS R&D Sas
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AMS R&D Sas
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Publication of EP3969757A1 publication Critical patent/EP3969757A1/de
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/20—Filtering
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L7/00—Suction cleaners adapted for additional purposes; Tables with suction openings for cleaning purposes; Containers for cleaning articles by suction; Suction cleaners adapted to cleaning of brushes; Suction cleaners adapted to taking-up liquids
    • A47L7/0004—Suction cleaners adapted to take up liquids, e.g. wet or dry vacuum cleaners
    • A47L7/0019—Details of the casing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps

Definitions

  • the present invention relates to the field of devices for suction of liquid found on a floor.
  • Devices are adapted to be fluidly connected to a pump to be able to suck up a liquid located on the ground while filtering this liquid.
  • This filtration aims to limit the risk of the pump being blocked by objects/particles located in the environment of the device for suction of liquid.
  • the device is designed to float in water. A pipe runs through the device.
  • Such a device plays the role of a pump strainer.
  • a disadvantage of these devices is that they are subject to clogging by objects/particles resting on the ground around the device.
  • An object of the present invention is to provide a device adapted to be fluidly connected to a pump for suction of liquid from a floor, this device limiting the risk of clogging of the pump.
  • a device for suction of liquid on a floor comprising an outer wall defining a first enclosure open at least via recesses formed through this outer wall to allow the passage of liquid from the outside of the first enclosure towards the inside of this first enclosure.
  • the device according to the invention comprises a pipe having a first end arranged to be fluidly connected to a liquid suction pump and a second end of the pipe fluidly connected to said first enclosure to be able to suck liquid located in this first enclosure towards said pipe.
  • This device is essentially characterized in that it comprises an interior wall defining a second enclosure, this second enclosure being open at least via recesses formed through the interior wall to allow the passage of liquid from the first enclosure towards the second enclosure and said second end of the pipe opening inside this second enclosure, at a distance from the first enclosure.
  • This liquid thus undergoes a first filtration thanks to the recesses formed through the exterior wall and a second filtration through the recesses formed through the interior wall.
  • the second enclosure is placed inside the first enclosure. This makes it possible to carry out this double filtration with a particularly compact device having a buffer storage zone between the interior wall and the exterior wall.
  • the invention relates to a device 1 for suction of liquid on a floor S.
  • This device 1 comprises an outer wall 10 defining a first enclosure E1 open at least via recesses 11 formed through this outer wall 10 to allow the passage of liquid from the outside of the first enclosure E1 to the inside of this first speaker E1.
  • This outer wall 10 has the shape of a bell with a cylindrical edge and the recesses 11 formed through the outer wall are essentially in the form of slots. Each recess 11 extends in a plane perpendicular to a support plane of the device 1 on the ground S.
  • These recesses 11 are here arranged in first and second groups of recesses G1, G2 and a portion G3 of the exterior wall 10 extends between these first and second groups of recesses G1, G2 to separate them.
  • Each of the recesses 11 of the first group G1 has an elongated shape and extends in a direction common to all of these recesses 11 of the first group G1.
  • Each of the recesses 11 of the second group G2 extends in length along an arc and has a first terminal end positioned on a side edge of the exterior wall 10 and a second terminal end positioned on an upper face of the exterior wall 10.
  • the recesses of the first group G1 all open towards the ground to suck up liquid as closely as possible. from the ground and the recesses 11 of the second group G2 are moved away from the ground to be able to suck up liquid located above the device.
  • These recesses 11 are distributed over most of the periphery of the outer wall 10 (in this case these recesses 11 are distributed over at least 60% of the periphery of the outer wall 10) and are preferably equidistant from each other to be able to achieve a uniform suction of liquid towards the inside of the first enclosure E1. The risk of clogging the recesses 11 is thus minimized.
  • the device 1 also comprises a pipe 3 having a first end 3a arranged to be fluidly connected with a liquid suction pump 4 and a second end 3b of the pipe 3 fluidly connected to said first enclosure E1 to be able to suck up liquid located in this first enclosure E1 towards said pipe 3.
  • the device 1 also comprises an interior wall 20 defining a second enclosure E2 which is preferably placed inside said first enclosure E1.
  • This second enclosure E2 is open at least via recesses 21 formed through the interior wall 20 to allow the passage of liquid from the first enclosure E1 towards the second enclosure E2 and said second end 3b of the pipe opening inside the this second enclosure E2, at a distance from the first enclosure E1.
  • this aspect of the device according to the invention makes it possible to carry out double filtration which reduces the risk of clogging of the pump by objects located around the device 1.
  • the total liquid passage section via the recesses of the outer wall 10 is greater by at least 30% than the total section of passage of liquid via the recesses of the interior wall 20.
  • the minimum dimension X1 of the recesses 11 through the outer wall 10 is less than the minimum dimension 10, we are certain that these particles will be able to pass through the recesses 21 of the interior wall 20, which avoids the risk of clogging the first enclosure E1.
  • the minimum dimension X2 of the recesses 21 through the interior wall 20 and the maximum dimension of the recesses 21 through the interior wall 20 are selected to limit the size of the particles capable of passing into the second enclosure E2.
  • the recesses 21 formed through the interior wall 20 are exclusively formed between a suction limit plane through the interior wall P1a (that is to say an upper plane) and a support plane of the interior wall P1b (that is to say a lower plane compared to said upper plane when the device is placed on the ground to suck up liquid).
  • the recesses 11 formed through the exterior wall 10 are exclusively formed between a suction limit plane through the exterior wall P2a and a support plane of the exterior wall P2b (the plane P2a being above the plane P2b when the device 1 is placed on the ground to suck up liquid).
  • At least some of the recesses formed through the exterior wall 10 are formed between the suction limit plane through the exterior wall P2a and the suction limit plane through the interior wall P1a.
  • the outer wall 10 has recesses 11 which are above the level of the suction limit plane P1a through the inner wall 20 and below the level of the suction limit plane through the outer wall P2a, the outer wall makes it possible to filter liquid on a portion of this outer wall which is above the level of the suction limit plane P1a of the inner wall.
  • said second end 3b of the pipe opens into an internal portion of the second enclosure which is exclusively located between the suction limit plane through the interior wall P1a and the suction limit plane through the exterior wall P2b.
  • This characteristic allows the second end 3b of the pipe to quickly generate a depression in the second enclosure to raise the liquid level Ny above the suction limit plane P1a, and quickly suck up the liquid located on the ground .
  • This second end 3b is oriented to define a main axis of liquid suction via this second end 3b which does not pass through any of the recesses 21 formed through the interior wall 20.
  • This characteristic promotes homogenization of the flow of liquid flowing through the different recesses 21, which limits the risk of the appearance of a low liquid level at the level of only one of the recesses 21 and a risk of air being sucked in via this single recess 21 (this would induce degradation pump operation).
  • At least some of the recesses 11 formed through the exterior wall 10 extend between the suction limit plane through the interior wall P1a and the support plane of the interior wall P1b.
  • the recesses 11 formed through the exterior wall 10 are exclusively formed between the suction limit plane through the exterior wall P2a and the support plane of the exterior wall P2b.
  • the support plane of the interior wall P1b and the support plane of the exterior wall P2b are preferentially coplanar with each other to improve the hold of the device on the ground S.
  • the suction limit plane through the interior wall P1a is spaced from the support plane of the interior wall P1b by a height value of at most 1 centimeter and preferably at most 4 millimeters, preferably d 'at most 2 mm, which makes it possible to limit the width of the recesses 21 made through the interior wall 20. Consequently, the distance between the ground (against which the interior wall 20 bears) and the limit plane of suction P1a is thus very weak.
  • the device according to the invention is then able to suck up only liquid and it is then fully effective.
  • the liquid level from which the liquid can be sucked is particularly low.
  • the device preferably comprises a bottom 22 resting against the interior wall 20.
  • This bottom 22 forms a lower face of the second enclosure E2.
  • This bottom 22 is preferably solid but it may possibly have recesses of dimensions less than or equal to the minimum dimensions X2 of each of the recesses 21 of the interior wall 20.
  • the size of the particles capable of penetrating towards the second enclosure E2 is limited since only particles capable of passing through the recesses 21 can penetrate into this enclosure E2.
  • the risk of blockage in the pump connected to line 3 is thus particularly limited.
  • this bottom 22 forms a support foot for the device 1 on the ground S.
  • This bottom 22 comprises a lower plate 22a forming the lower face of the second enclosure E2 and ribs 22b.
  • Each of these ribs 22b extends perpendicular to said lower plate 22a.
  • Each of these ribs 22b has a first terminal end arranged opposite the interior wall 20 and a second terminal end arranged in a central zone of the second enclosure E2 towards which the second end 3b of pipe 3 opens.
  • each rib 22b has a first function of stiffening the bottom 22 and a second function of guiding the flow of fluid inside the second enclosure E2 going from the interior wall 20 where the liquid is admitted towards a central zone of the second enclosure E2 where pipe 3 opens.
  • the second enclosure E2 is preferably open towards a bottom plane PF in which a major part of said bottom 22 extends.
  • the bottom plane PF is here the plane in which the lower plate 22a of the bottom 22 extends.
  • first enclosure E1 is open towards the bottom plane PF makes it possible to have an opening in this first enclosure oriented towards the ground S on which it is desired to suck up the liquid.
  • liquid is suctioned via line 3
  • a depression is generated in the first enclosure E1 which tends to press the device 1 against the ground S.
  • the device preferably comprises a rod 40 extending inside the second enclosure E2, this rod 40 extending from an upper face from this second enclosure E2 to a central zone of said bottom 22.
  • the rod 40 and the bottom 22 are mechanically assembled against each other.
  • the bottom 22 forming the lower face of the second enclosure E2 is thus assembled to the rest of the device via a centering rod 40 in contact against the central zone of the bottom.
  • This method of assembly is advantageous because it limits the risk of bending of the bottom 22 and consequently the risk of its breakage.
  • the bottom 22 has lower and upper faces arranged on either side of the bottom, the upper face being opposite the second enclosure E2.
  • the bottom has a peripheral edge having a chamfer 22c extending to the upper face of the bottom.
  • Some of the recesses 21 formed through the interior wall 20 also have a chamfer 21a, one chamfer face 21a of which is either parallel to the chamfer 22c of the peripheral edge of the bottom, or not parallel to the chamfer 22c by deviating from this chamfer 22c going from the outside towards the inside of the second enclosure E2.
  • the chamfer of the bottom 22c extends to the lower face of the bottom which allows this chamfer to approach as close as possible to the ground S on which the device 1 is placed.
  • all the recesses 21 formed through the interior wall 20 extend in length in the same plane which is common to all of the recesses 21 of the interior wall 20. In other words, when the device is placed on the horizontal plane ground, these recesses 21 are horizontal according to their respective lengths.
  • the liquid passage section through a given recess 21 made through the interior wall 20 is determined by its length and its width.
  • This characteristic makes it possible to lower the level from which the device according to the invention allows only liquid to be sucked up.
  • Pump 4 is connected to a control unit UC of pump 4 itself connected to a probe 50 adapted to detect the reaching of a liquid level relative to pump 4.
  • This control unit UC is arranged to control the operation of the pump 4 in response to the detection of said liquid level by the probe 50.
  • the probe 50 can be fixed on the pump or alternatively it can be fixed on the device 1 according to the invention.
  • This fixing can be adjustable so as to adjust a detection level from which the probe detects the presence of liquid on the ground where the device 1 is placed.
  • the probe 50 in order to preserve the integrity of the probe 50, can be fixed on the device to detect the reaching of a liquid level inside the device 1, in this case either a liquid level inside the first enclosure.
  • the liquid level detected by the probe 50 can be a liquid level Nx outside the first enclosure E1 or a liquid level in the first enclosure E1.
  • the probe 50 may comprise at least two electrodes spaced from one another to be able to detect the reaching of a liquid level based on a measurement of at least one electrical characteristic carried out with these electrodes.
  • This electrical characteristic must be variable depending on the nature of the fluid located between these electrodes.
  • this electrical characteristic measured using these electrodes can be an electrical resistance between these electrodes, a current intensity between these electrodes, an electrical voltage between these electrodes.
  • control unit UC can, based on this measurement, control the activation of the electric motor. This avoids operating the motor for liquid levels that are too low and incompatible with the self-priming of the pump, the pump being activated only when it can begin to suck up liquid from the ground.
  • the probe 50 can be arranged so that the liquid level detected by the probe 50 is above said suction limit plane through the interior wall P1a, that is to say preferably between 2 and 4 mm height of liquid relative to the ground S.
  • control unit UC and the probe 50 are arranged so that after a drop in the liquid level below a predetermined level detected by the probe 50, the operation of the engine is maintained by the control unit CPU for a predetermined duration.
  • control unit UC or the level probe 50 may include a time delay counting down said predetermined duration, this time delay being triggered from the detection of the drop in the liquid level below said predetermined level.
  • This predetermined duration is for example of the order of 30 seconds.
  • the time delay can be integrated into the probe 50 and, in this case, the control unit UC is programmed to stop the motor as soon as it receives from the probe a signal indicating the end of the countdown of the duration predetermined.
  • This pump 4 is dry self-priming, the term dry self-priming pump indicating the capacity of the pump to suck in dry air and create sufficient depression to suck up liquid from the ground and move it up to the chamber to discharge it via a discharge outlet 42 of the pump.
  • Pump 4 has a suction inlet 41 and a discharge outlet 42.
  • the first end 3a of the pipe 3 of the device 1 is arranged to be connected fluidically and removably to said suction inlet 41 in such a way that when this pipe 3 is connected to the suction inlet 41 of the pump 4 and that a support face of the device 1 is placed on a flat ground S (where it is desired to suck up liquid), the pump 4, under the effect of its own weight, opposes the movement away of the device 1 opposite said ground plane S.
  • the pump comprises a chamber 44 fluidly connected to the suction inlet 41 and to the discharge outlet 42, a moving part 45 arranged in the chamber 44 and an electric motor 46 located outside the chamber 44.
  • the electric motor and the UC control unit are supplied with energy via an electrical power cable 60.
  • the electric motor 46 is connected to the moving part 45 by a coupling mechanism in such a way that the actuation of the electric motor 46 by the control unit UC induces a movement of the moving part 45 relative to the chamber to move a fluid (gas or liquid) from the suction inlet 41 to the discharge outlet 42.
  • the moving part 45 here has the shape of a disc hollowed out in its center connected to the electric motor so as to be moved in an alternating rectilinear movement in a direction perpendicular to the disc.
  • the recess in the disc in its center allows for a pumping effect on both sides of the moving part with a single discharge outlet facing this recess.
  • This moving part 45 is rigid here but it could be deformable so that the actuation of the electric motor 46 induces a wave propagating along the moving part 45 to move the fluid.
  • this moving part is an undulating membrane.
  • Such a membrane can be discoidal (the wave propagating along the radius of this disc) or in the form of a ribbon (the wave propagating along the length of the ribbon) or in the form of a flexible tube extensible along its periphery and elongated (in this case the wave is a circular wave formed along the periphery of the tube and propagating along the length of this tube).
  • the pump can include an upstream lip 120a and a downstream lip 121a designed to deform depending on the movement of the moving part 45 so as to create between these lips 120a, 121a and the wall 44a of the chamber 44, a first space 123a which is expandable when moving part 45 is moved away from the first wall 44a of the chamber and compressible when moving part 45 is brought closer to the first wall 44a.
  • the part 45 is alternately moved away from and brought closer to the first wall 44a during actuation of the electric motor 46 by the control unit UC.
  • the upstream lip 120a is adapted to create a sealed contact against the first wall 44a when the fluid pressure in the space 123a exceeds a fluid pressure upstream of this upstream lip 120a.
  • the space 123a is alternately in depression and open towards the suction inlet 41 to suck in fluid (gas or liquid) and in overpressure and open towards the discharge outlet 42 to expel this fluid. These lips impart self-priming ability at the pump.
  • first upstream and downstream circular lips 120a, 121a are placed between one of the sides of said movable part 45 and a first wall of the chamber 44 to define a first space 123a between these first upstream and downstream circular lips 120a, 121a.
  • this first space 123a defined between the lips 120a and 121a forms an annular space extending between a first wall 44a of the chamber 44 and a first side of the movable part 45 which is opposite this first wall 44a.
  • these first upstream and downstream circular lips 120a, 121a are such that, on a first part P1 of said reciprocating movement of said movable part 45 relative to the chamber 44, the first downstream circular lip 121a provides a seal preventing the passage of fluid from said discharge outlet 42 towards said first space 123a and the first upstream circular lip 120a then authorizing a passage of free fluid between said first space 123a and said suction inlet 41.
  • the first upstream circular lip 120a is moved away from one of said first wall 44a or movable part 45 to generate a free fluid passage, that is to say a free space between said first space 123a and said suction inlet 41.
  • the reciprocating movement of the moving part 45 induces a suction of fluid from the suction inlet 41 towards the first space 123a on the first part P1 of the movement then an expulsion of fluid from the first space 123a towards the discharge outlet 42 on the second part P2 of said reciprocating movement.
  • the pump includes a second upstream lip 120b and a second downstream lip 121b designed to deform according to the movement of the moving part 45 so as to create between these lips 120b, 121b and a second wall 44b of the chamber 44, a second space 123b which is expandable when moving part 45 is moved away from the second wall 44a of the chamber and compressible when brings the moving part 45 closer to the second wall 44a.
  • the part 45 is movable between the first and second walls 44a, 44b of the chamber 44.
  • the part 45 is thus alternately moved away from and brought closer to the second wall 44b during actuation of the electric motor 46 by the control unit UC.
  • the second upstream lip 120b is adapted to create a sealed contact against the second wall 44b when the fluid pressure in the second space 123b exceeds a fluid pressure upstream of this second upstream lip 120b.
  • the second space 123b is alternately in depression and open towards the suction inlet 41 to suck in fluid (gas or liquid) and in overpressure and open towards the discharge outlet 42 to expel this fluid.
  • the second upstream circular lip 120b is placed closer to the suction inlet 41 than to the discharge outlet 42 and the second downstream circular lip 121b is placed closer to the discharge outlet 42 than to the discharge outlet 42. suction inlet 41.
  • These second upstream and downstream circular lips 120b, 121b are placed between one of the sides of said movable part 45 and a second wall 44b of the chamber 44 to define a second space 123b between these second upstream and downstream circular lips 120b, 121b.
  • this second space 123b defined between the lips 120b and 121b forms an annular space extending between the second wall 44b and the second side of the movable part 45 which is opposite this second wall 44b.
  • these second upstream and downstream circular lips 120b, 121b are such that, on a third part of said reciprocating movement of said movable part 45 relative to the chamber 44, the second downstream circular lip 121b provides a seal preventing the passage of fluid from said discharge outlet 42 towards said second space 123b and the second upstream circular lip 120b then authorizing a passage of free fluid between said second space 123b and said suction inlet 41.
  • this third part of the movement of the moving part which is symmetrical to the first part P1 of the movement relative to a central position of the part 45 between the walls 44a and 44b.
  • the second upstream circular lip 120b is moved away from one of said second wall 44b or movable part 45 to generate a passage of free fluid, i.e. that is to say a free space between said second space 123b and said suction inlet 41.
  • the reciprocating movement of the moving part 45 induces a suction of fluid from the suction inlet 41 towards the second space 123a then an expulsion of fluid from the second space 123b towards the discharge outlet 42.
  • one face of the moving part does not have a lip then, it is either because this face is not used for pumping (case of a moving part in the shape of a disc not hollowed out in its center), either because it is the moving part which is deformable to establish a seal against the corresponding wall of the chamber.
  • the differential pressure generated between the discharge outlet and the suction inlet of the pump can be increased.
  • a given lip can press against a support of this lip (the chamber wall or the moving part) and act as a suction cup.
  • Each at least one passage of fluid between a given lip and its support is such that when this lip comes to rest against its support, fluid can continue to circulate between this lip and its support. This avoids the suction effect.
  • each boss or channel extends longitudinally from one end of the given lip towards a junction point between this lip and its support.
  • bosses and/or channels are only formed/carried on the support of the lip rather than on the lip itself because this lip is then deformable in a homogeneous manner.
  • these bosses or channels are formed on the support of the lip to form rays centered around an axis of symmetry of the given lip.
  • Pump 4 can be used alone to transfer fluid from its suction inlet to the discharge outlet or alternatively it can be used in combination with the device according to the invention to form a cellar vacuum.
  • the fluid connection between the pump 4 and the device 1 is preferably made using a manually actuable connection, that is to say capable of switching manually, without tools, from a state of coupling of the device with the pump to a state of decoupling of the device with the pump and vice versa.
  • This connection may include a quick connection and/or a connection with an idle nut allowing tightening by screwing to tighten the pipe on the pump without the need for relative pivoting of the device 1 with respect to the pump 4.
  • this connection includes an O-ring sealing as soon as there is a fitting of the pipe with respect to the fitting to a fitting depth greater than at least one thread pitch of the connection. crazy nut.
  • the cellar vacuum configuration 100 is particularly practical because the device 1 makes it possible to reduce the minimum liquid level from which it can start pumping liquid from the ground.
  • the device 1 makes it possible to suck up liquid from the ground until a very low height of liquid on the ground is reached, preferably less than 4 mm, preferably less than 2 mm.
  • the pump 4 comprises feet 43 whose ends are coplanar with the support face of the device 1 when the first end 3a of the pipe 3 of the device is connected fluidly to said suction inlet 41.
  • the assembly 100 according to the invention is particularly stable since its center of gravity is very close to the ground S.
  • the suction inlet 41 and the discharge outlet 42 of the pump 4 extend longitudinally in a common plane which is parallel to said support face of the device.
  • the pump 4 is assembled with the first end 3a of the pipe 3 of the device 1 in such a way that when the support face of the device is positioned on a flat ground S to suck up liquid, the pump 4 is then supported by this device 1.
  • the first end 3a of the pipe 3 is formed on an upper face of the device 1, the support face of the device and this upper face being placed on either side of the device 1.
  • the suction inlet 41 of the pump 4 extends longitudinally in a direction of extension which is perpendicular to an axis of longitudinal extension of the discharge outlet 42.
  • suction inlet 41 extends longitudinally in a direction of extension which is perpendicular to said support face of the device 1 on the ground.
  • the device 1 forms a support foot for the pump 4 on the ground.
  • the assembly is adapted to selectively adopt a liquid transfer configuration ( figure 8 ) and a cellar empty configuration ( figures 9 And 10 ).
  • liquid transfer configuration ( figure 8 ) the device 1 is assembled on an attachment 47 of the pump 4 located at a distance from the suction inlet 41 of the pump. In this way, liquid can be transferred using the pump without this liquid passing through the device.
  • the device 1 is fluidly connected to the suction inlet 41 of the pump, this device 1 forming a support foot for the pump, this device 1 then being arranged to filter the fluid sucked in by the pump.
  • attachment 47 is here an excrescence (here a threaded excrescence) on which the first end 3a of the pipe 3 of the device 1 fits.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (20)

  1. Vorrichtung (1) zum Aufsaugen von Flüssigkeit von einem Boden (S), wobei die Vorrichtung (1) eine Außenwand (10) umfasst, die eine erste Umfassung (E1) definiert, die mindestens über Aussparungen (11) offen ist, die durch diese Außenwand (10) hindurch ausgebildet sind, um den Durchtritt von Flüssigkeit von außerhalb der ersten Umfassung (E1) ins Innere dieser ersten Umfassung (E1) zu gestatten, wobei die Vorrichtung (1) eine Leitung (3) umfasst, die ein erstes Ende (3a) aufweist, das ausgebildet ist, fluidisch mit einer Flüssigkeitsansaugpumpe (3) verbunden zu werden, und ein zweites Ende (3b) der Leitung (3), das fluidisch mit der genannten ersten Umfassung (E1) verbunden ist, um die Flüssigkeit, die sich in dieser ersten Umfassung (E1) befindet, zu der genannten Leitung (3) saugen zu können, wobei die Vorrichtung (1) eine Innenwand (20) umfasst, die eine zweite Umfassung (E2) definiert, wobei diese zweite Umfassung (E2) mindestens über Aussparungen (21) offen ist, die durch die Innenwand (20) hindurch ausgebildet sind, um den Durchtritt von Flüssigkeit von der ersten Umfassung (E1) zu der zweiten Umfassung (E2) zu gestatten, und wobei das genannte zweite Ende (3b) der Leitung ins Innere dieser zweiten Umfassung (E2) mündet, in einem Abstand zu der ersten Umfassung (E1) und wobei:
    - die durch die Innenwand (20) hindurch ausgebildeten Aussparungen (21) ausschließlich zwischen einer Sauggrenzebene (Pla) zum Ansaugen durch die Innenwand und einer Auflageebene (P1b) der Innenwand ausgebildet sind; und
    - die durch die Außenwand (10) hindurch ausgebildeten Aussparungen (11) ausschließlich zwischen einer Sauggrenzebene (P2a) zum Ansaugen durch die Außenwand und einer Auflageebene (P2b) der Außenwand ausgebildet sind, wobei zumindest einige der durch die Außenwand hindurch ausgebildeten Aussparungen zwischen der Sauggrenzebene (P2a) zum Ansaugen durch die Außenwand und der Sauggrenzebene (Pla) zum Ansaugen durch die Innenwand ausgebildet sind.
  2. Vorrichtung (1) nach Anspruch 1, bei der die genannte zweite Umfassung (E2) im Inneren der genannten ersten Umfassung (E1) angeordnet ist.
  3. Vorrichtung (1) nach einem der Ansprüche 1 oder 2, bei der die Sauggrenzebene (Pla) zum Ansaugen durch die Innenwand zur Auflageebene (P1b) der Innenwand um einen Höhenwert von höchstens 1 Zentimeter beabstandet ist.
  4. Vorrichtung nach einem der Ansprüche 1 bis 3, bei der sich zumindest einige der durch die Außenwand (10) hindurch ausgebildeten Aussparungen (11) zwischen der Sauggrenzebene (Pla) zum Ansaugen durch die Innenwand und der Auflageebene (P1b) der Innenwand erstrecken.
  5. Vorrichtung nach einem der Ansprüche 3 oder 4, bei der die Auflageebene (P1b) der Innenwand und die Auflageebene (P2b) der Außenwand zueinander koplanar sind.
  6. Vorrichtung nach einem der Ansprüche 1 bis 5, bei der:
    - die genannte Sauggrenzebene (Pla) zum Ansaugen durch die Innenwand;
    - die genannte Auflageebene (P1b) der Innenwand;
    - die genannte Sauggrenzebene (P2b) zum Ansaugen durch die Außenwand; und
    - die genannte Auflageebene (P2b) der Außenwand;
    zueinander parallele Ebenen sind.
  7. Vorrichtung nach einem der Ansprüche 1 bis 6, umfassend einen Boden (22) in Anlage an der Innenwand (20), wobei dieser Boden (22) eine untere Fläche der zweiten Umfassung (E2) bildet.
  8. Vorrichtung nach Anspruch 7, bei der der Boden (22) eine untere Platte (22a) umfasst, die die untere Fläche der zweiten Umfassung (E2) bildet, sowie Rippen (22b), wobei sich jede dieser Rippen (22b) senkrecht in Bezug auf die genannte untere Platte (22a) erstreckt, wobei jede dieser Rippen ein erstes Ende hat, das gegenüber der Innenwand (20) angeordnet ist, und ein zweites Ende, das in einer zentralen Zone der zweiten Umfassung (E2) angeordnet ist, in die das zweite Ende (3b) der Leitung (3) mündet.
  9. Vorrichtung nach einem der Ansprüche 7 oder 8, bei der die zweite Umfassung (E2) in Richtung einer Bodenebene (PF) offen ist, in der sich ein Großteil des genannten Bodens (22) erstreckt.
  10. Vorrichtung nach einem der Ansprüche 7 oder 8, umfassend eine Stange (40), die sich im Inneren der zweiten Umfassung (E2) erstreckt, wobei sich diese Stange (40) von einer oberen Fläche dieser zweiten Umfassung (E2) bis zu einer zentralen Zone des genannten Bodens (22) erstreckt, wobei die Stange (40) und der Boden (22) mechanisch aneinandergefügt sind.
  11. Vorrichtung nach einem der Ansprüche 1 bis 10, bei der sich alle durch die Innenwand (20) hindurch ausgebildeten Aussparungen längs in einer selben Ebene erstrecken, die der Gesamtheit von Aussparungen (21) der Innenwand (20) gemeinsam ist.
  12. Einheit (100) zum Ansaugen von Flüssigkeit von einem Boden (S), umfassend die Vorrichtung (1) nach einem der Ansprüche 1 bis 11 und eine Flüssigkeitsansaugpumpe (4), die mit dem genannten ersten Ende (3b) der Leitung (3) verbunden ist, wobei die Pumpe (4) mit einer Steuereinheit (UC) der Pumpe (4) verbunden ist, die selbst mit einer Sonde (50) verbunden ist, die geeignet ist, das Erreichen eines Flüssigkeitsniveaus in Bezug auf die Pumpe (4) zu erfassen, wobei diese Steuereinheit ausgebildet ist, den Betrieb der Pumpe (4) in Antwort auf die Erfassung des genannten Flüssigkeitsniveaus durch die Sonde (50) zu steuern.
  13. Einheit (100) nach Anspruch 12, bei der die Pumpe (4) einen Saugeinlass (41) und einen Förderauslass (42) umfasst, wobei das erste Ende (3a) der Leitung (3) der Vorrichtung (1) ausgebildet ist, fluidisch und lösbar mit dem genannten Saugeinlass (41) verbunden zu werden, derart, dass, wenn diese Leitung (3) mit dem Saugeinlass (41) der Pumpe (4) verbunden ist und wenn eine Auflagefläche der Vorrichtung (1) auf einem ebenen Boden (S) ruht, sich die Pumpe (4) unter der Wirkung ihres Eigengewichts dem Entfernen der Vorrichtung (1) vom genannten ebenen Boden (S) widersetzt.
  14. Einheit (100) nach Anspruch 13, bei der die Pumpe (4) Füße (43) umfasst, deren Enden koplanar mit der Auflagefläche der Vorrichtung (1) sind, wenn das erste Ende (3a) der Leitung (3) der Vorrichtung fluidisch mit dem genannten Saugeinlass (41) verbunden ist.
  15. Einheit nach Anspruch 13, bei der die Pumpe (4) mit dem ersten Ende (3a) der Leitung (3) der Vorrichtung (1) derart zusammengefügt ist, dass, wenn die Auflagefläche der Vorrichtung auf einem ebenen Boden (S) platziert ist, um dort Flüssigkeit anzusaugen, die Pumpe (4) dann von dieser Vorrichtung (1) gestützt wird.
  16. Einheit nach einem der Ansprüche 13 bis 15, bei der die Pumpe (4) eine trocken-selbstansaugende Pumpe ist.
  17. Einheit nach einem der Ansprüche 13 bis 16, bei der die Pumpe eine Kammer (44) umfasst, die fluidisch mit dem Saugeinlass (41) und mit dem Förderauslass (42) verbunden ist, ein bewegliches Teil (45), das in der Kammer (44) angeordnet ist, und einen Elektromotor (46), der sich außerhalb der Kammer (44) befindet, wobei der Elektromotor (46) mit dem beweglichen Teil (45) über einen Kopplungsmechanismus derart verbunden ist, dass die Betätigung des Elektromotors (46) eine Hin- und Herbewegung des beweglichen Teils (45) in Bezug auf die Kammer induziert, um ein Fluid von dem Saugeinlass zu dem Förderauslass zu bewegen.
  18. Einheit nach Anspruch 17, bei der die Pumpe eine erste kreisförmige stromaufwärtige Lippe (120a) umfasst, die näher zum Saugeinlass (41) als zum Förderauslass (42) angeordnet ist, und eine erste kreisförmige stromabwärtige Lippe (121a), die näher zum Förderauslass (42) als zum Saugeinlass (41) angeordnet ist, wobei diese ersten kreisförmigen stromaufwärtigen und stromabwärtigen Lippen (120a, 121a) zwischen einer der Seiten des genannten beweglichen Teils (45) und einer ersten Wand (44a) der Kammer (44) angeordnet sind, um einen ersten Raum (123a) zwischen diesen ersten kreisförmigen stromaufwärtigen und stromabwärtigen Lippen (120a, 121a) zu definieren, wobei diese erste kreisförmige stromaufwärtige und diese erste kreisförmige stromabwärtige Lippe (120a, 121a) derart sind, dass:
    - auf einem ersten Abschnitt (P1) der genannten Hin- und Herbewegung des genannten beweglichen Teils (45) in Bezug auf die Kammer (44) die erste kreisförmige stromabwärtige Lippe (121a) eine Abdichtung erzeugt, die den Fluiddurchritt von dem genannten Förderauslass (42) in Richtung des genannten ersten Raums (123a) verhindert, wobei die erste kreisförmige stromaufwärtige Lippe (120a) dann einen freien Fluiddurchtritt zwischen dem genannten ersten Raum (123a) und dem genannten Saugeinlass (41) gestattet; und dass
    - auf einem zweiten Abschnitt (P2) der genannten Hin- und Herbewegung des genannten beweglichen Teils (45) in Bezug auf die Kammer (44) die erste kreisförmige stromaufwärtige Lippe (120a) eine Abdichtung erzeugt, die den Fluiddurchtritt von dem genannten ersten Raum (123a) in Richtung des genannten Saugeinlasses (41) verhindert, wobei die erste kreisförmige stromabwärtige Lippe (121a) ausgebildet ist,
    - einerseits den Fluiddurchtritt zwischen dem genannten ersten Raum (123a) und dem genannten Förderauslass (42) zu gestatten, wenn ein Fluiddruck im Inneren des genannten ersten Raums (123a) höher als ein Fluiddruck im Bereich des Förderauslasses (42) ist; und
    - andererseits den Fluiddurchtritt von dem genannten Förderauslass (42) in Richtung des genannten ersten Raums (123a) zu verhindern.
  19. Einheit (100) nach einem der Ansprüche 13 bis 18, bei der die Vorrichtung (1) zum Ansaugen von Flüssigkeit von einem Boden (S) einen Stützfuß der Pumpe (4) bildet.
  20. Einheit (100) nach einem der Ansprüche 13 bis 18, bei der die Einheit geeignet ist, selektiv eine Flüssigkeitsübergabekonfiguration und eine Entwässerungskonfiguration anzunehmen, wobei in der Flüssigkeitsübergabekonfiguration die Vorrichtung (1) an einer Halterung (47) der Pumpe (4) befestigt ist, die sich mit Abstand zum Saugeinlass (41) der Pumpe befindet, und in der Entwässerungskonfiguration die Vorrichtung (1) fluidisch mit dem Saugeinlass (41) der Pumpe verbunden ist, wobei diese Vorrichtung (1) einen Stützfuß für die Pumpe bildet, wobei diese Vorrichtung (1) dann ausgebildet ist, von der Pumpe angesaugtes Fluid zu filtern.
EP20724179.5A 2019-05-14 2020-05-13 Vorrichtung zum aufsaugen von flüssigkeit vom boden Active EP3969757B1 (de)

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FR1905028A FR3096093B1 (fr) 2019-05-14 2019-05-14 Dispositif pour l’aspiration de liquide se trouvant sur un sol.
PCT/EP2020/063389 WO2020229569A1 (fr) 2019-05-14 2020-05-13 Dispositif pour l'aspiration de liquide se trouvant sur un sol

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GB809277A (en) * 1956-10-17 1959-02-18 Megator Pumps Compressor Improvements in liquid strainers
DE2619403A1 (de) * 1976-05-03 1977-11-24 Albert Blum Tauchpumpenaggregat
JPH0395081U (de) * 1990-01-16 1991-09-27
FR2744769B1 (fr) * 1996-02-12 1999-02-12 Drevet Jean Baptiste Circulateur de fluide a membrane vibrante
JP3095081U (ja) * 2002-12-11 2003-07-18 時男 園田 埋め込みインサート一体型ｌ金物
PT2740940T (pt) * 2012-12-04 2020-04-02 Einhell Germany Ag Bomba submersível
DE102015007100A1 (de) * 2015-06-08 2016-12-08 Gea Tuchenhagen Gmbh Selbstansaugende Pumpenaggregation

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CN114364878B (zh) 2023-10-31
EP3969757A1 (de) 2022-03-23
US20220307495A1 (en) 2022-09-29
CN114364878A (zh) 2022-04-15
FR3096093A1 (fr) 2020-11-20
WO2020229569A1 (fr) 2020-11-19

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