EP4001655A1 - Pompe submersible à pression pour liquide et son utilisation - Google Patents

Pompe submersible à pression pour liquide et son utilisation Download PDF

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Publication number
EP4001655A1
EP4001655A1 EP21202591.0A EP21202591A EP4001655A1 EP 4001655 A1 EP4001655 A1 EP 4001655A1 EP 21202591 A EP21202591 A EP 21202591A EP 4001655 A1 EP4001655 A1 EP 4001655A1
Authority
EP
European Patent Office
Prior art keywords
housing
inlet
suction
pump
liquid
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
Application number
EP21202591.0A
Other languages
German (de)
English (en)
Other versions
EP4001655B1 (fr
Inventor
Volk Martin
Stricker Herbert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Al Ko Geraete GmbH
Original Assignee
Al Ko Geraete GmbH
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 Al Ko Geraete GmbH filed Critical Al Ko Geraete GmbH
Priority to EP22172716.7A priority Critical patent/EP4074977B1/fr
Publication of EP4001655A1 publication Critical patent/EP4001655A1/fr
Application granted granted Critical
Publication of EP4001655B1 publication Critical patent/EP4001655B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • F04D13/086—Units comprising pumps and their driving means the pump being electrically driven for submerged use the pump and drive motor are both submerged
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
    • F04D15/0209—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid
    • F04D15/0218—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid the condition being a liquid level or a lack of liquid supply
    • 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/605—Mounting; Assembling; Disassembling specially adapted for liquid pumps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/18—Switches operated by change of liquid level or of liquid density, e.g. float switch
    • H01H35/186—Switches operated by change of liquid level or of liquid density, e.g. float switch making use of a cable suspended floater containing an inclination sensing switch

Definitions

  • the invention relates to a submersible pressure pump for liquid, at least having a pump housing with a housing outlet, a first, large-area housing inlet designed as a suction strainer, and a second, individual housing inlet designed in the bottom of the pump housing, a liquid pump arranged in the pump housing with a liquid-level-dependent or pressure-controlled liquid-level-dependent inlet -/Off switch, and a suction inlet in the liquid pump, wherein in a first suction situation there is a fluidic connection between the suction inlet and the first housing inlet, so that the liquid is sucked in through the large-area first housing inlet, with the second housing inlet being closed, and in a second suction situation, a fluidic connection is established between the suction inlet and the second housing inlet, so that the liquid is sucked in through the single second housing inlet, with the alternation v From the first suction situation to the second suction situation, an adapter is provided, which is designed in such a way that the fluidic connection between
  • the invention relates to different uses of a submersible pressure pump.
  • Submersible pressure pumps are known from the prior art, which can suck in a liquid in different ways.
  • the liquid is either sucked in near the bottom in the lower area of the submersible pressure pump through the large suction strainer or via an additional hose, which is connected to the bottom of the pump and floats near the liquid surface by means of a buoyancy unit, so that the Liquid is sucked in near the surface.
  • the submersible pressure pump With this so-called floating extraction or suction, the submersible pressure pump is laid on its side in order to be able to connect the hose to the bottom of the pump.
  • conventional submersible pressure pumps are not stable on their side on the ground and then roll back and forth.
  • the change between the two intake situations is complex, since the submersible pressure pump for the floating removal, ie for the assembly of the hose, has to be partially dismantled.
  • the inventors have recognized that the change in intake situation or the necessary change to the submersible pressure pump can be carried out without tools, without having to at least partially disassemble the submersible pressure pump.
  • a simple adapter is suitable for this, which can be inserted into the submersible pressure pump without tools, so that one or the other suction situation is created depending on the design of the adapter.
  • an external float switch experiences improved buoyancy if its righting moment varies in magnitude depending on the area of the float switch.
  • the inventors propose a submersible pressure pump for liquid, at least having a pump housing with a housing outlet, a first, large-area housing inlet designed as a suction strainer, and a second, individual housing inlet designed in the bottom of the pump housing, a liquid pump arranged in the pump housing with a liquid level-dependent or pressure-controlled on/off switch, and a suction inlet in the liquid pump, wherein in a first suction situation there is a fluidic connection between the suction inlet and the first housing inlet, so that the liquid is sucked in through the large-area first housing inlet, with the second housing inlet being closed, and in a second suction situation, a fluidic connection between the suction inlet and the second housing inlet is established, so that the liquid is sucked through the single second housing inlet, wherein to change from the first Ans From the suction situation to the second suction situation, an adapter is provided, which is designed in such a way that the fluidic connection between the suction inlet and the
  • the inventors also propose a submersible pressure pump for liquid, at least having a pump housing with a housing outlet, a first, large-area housing inlet designed as a suction strainer, and a second, individual housing inlet designed in the bottom of the pump housing, a liquid pump arranged in the pump housing with a liquid level-dependent or pressure-controlled on/off switch, and a suction inlet in the liquid pump, wherein in a first suction situation there is a fluidic connection between the suction inlet and the first housing inlet, so that the liquid is sucked in through the large-area first housing inlet, with the second housing inlet being closed, and in a second suction situation, a fluidic connection between the suction inlet and the second housing inlet is established, so that the liquid is sucked through the single second housing inlet, wherein to change from the first suction
  • an adapter is provided, which is designed in such a way that the fluidic connection between the suction inlet and the first housing inlet is interrupted and
  • the liquid is preferably water. In principle, however, any other liquid can also be sucked in and pumped with the submersible pressure pump according to the invention.
  • the submersible pressure pump according to the invention has a pump housing. Furthermore, according to the invention, the pump housing has a housing outlet and two housing inlets.
  • the first housing inlet is designed as a suction strainer with a large-area suction grille and represents a large-area inlet with a large number of openings such as round holes, slots or the like.
  • the openings of the first housing inlet are formed on the side, but preferably in the lower area of the pump housing.
  • the second housing inlet is formed as a single opening in the bottom of the pump housing.
  • the pump housing can be made in one piece or in several pieces. Furthermore, to protect the pump housing and to improve handling of the submersible pressure pump, a cladding of the pump housing can be provided.
  • the cladding is designed in one piece or in several pieces.
  • the paneling has a multi-part design and comprises at least an upper paneling part, a middle paneling part and a lower paneling part.
  • the submersible pressure pump has a liquid pump arranged in the pump housing with a liquid level-dependent or pressure-controlled on/off switch and a suction inlet into the liquid pump, through which the liquid can flow through one of the housing inlets is sucked in and then gets into the liquid pump.
  • the liquid pump includes, for example, three or four impellers, which generate the negative pressure required to suck in the liquid. Other embodiments of the liquid pump are also possible.
  • the liquid is sucked in either through the first housing inlet or the second housing inlet.
  • a fluidic connection is formed between the suction inlet and the first housing inlet, with the second housing inlet being closed, for example by means of a screw cap or a cap with a bayonet catch or an insertable cap such as a rubber cap or the like.
  • the liquid is then sucked in through the large-area first housing inlet.
  • a fluidic connection is established between the suction inlet and the second housing inlet, while at the same time the fluidic connection between the suction inlet and the first housing inlet is interrupted, so that the liquid is suctioned through the single second housing inlet.
  • an adapter is used to switch from the first suction situation to the second suction situation.
  • This adapter is used in the second housing inlet instead of the conventional closure, which closes the second housing inlet in the floor in the first intake situation.
  • the adapter is preferably provided with an additional sealing ring for sealing the suction thread relative to the suction opening of the wheelset.
  • the adapter in the second suction situation, the adapter on the one hand interrupts the fluidic connection between the suction inlet and the first housing inlet and on the other hand establishes the fluidic connection between the suction inlet and the second housing inlet.
  • Changing the intake situation is thus done in a simple manner by the cover in the second housing inlet is exchanged for the adapter or vice versa. This is advantageously done without tools.
  • it is advantageously not necessary to dismantle parts of the submersible pressure pump, in particular parts of the pump housing, to change the intake situation.
  • the adapter is designed as a cover which can be inserted into the second individual housing inlet.
  • the adapter is designed as a screw cap or as a cap with a bayonet lock or as a plug-in cap such as a rubber cap or the like.
  • the insertion and release of the cover in the second housing inlet can advantageously be carried out without tools.
  • the adapter preferably includes a threaded connector so that the liquid can be sucked in through the adapter.
  • the threaded connector is advantageously formed centrally in the cover, so that it has an opening.
  • the adapter designed as a cover thus closes the second housing inlet and at the same time creates the fluidic connection to the suction inlet via the threaded connector, so that the liquid can be sucked in through the threaded connector through the cover.
  • the threaded connector is inserted with the cover into the second housing inlet and is advantageously placed on the suction inlet in such a way that the suction inlet is connected exclusively to the second housing inlet or the opening of the adapter cover through the threaded connector. In other words, this means that the liquid can only be sucked in through the threaded connector in the second housing inlet.
  • Embodiments other than the threaded connector for producing a suction-tight connection option for connecting a suction hose or a plug-on connection for the suction hose are also within the scope of the invention.
  • a hose with a buoyancy unit fastened at one end and a thread at the other end, which can be connected to the threaded connector is particularly favorable. Due to the buoyancy unit on the hose, for example an air-filled ball, for example a balloon, or a styrofoam ball, this end of the hose always rises in the direction of the liquid surface, so that the liquid is sucked in in the area of the surface.
  • This suction situation is also referred to below as floating removal or suction. Floating extraction is particularly suitable for contaminated liquids, where the contamination normally collects in the deeper areas.
  • the hose can preferably be attached to the threaded connector of the adapter without tools.
  • An advantageous embodiment of the submersible pressure pump provides at least one handle on the pump housing, which forms at least one lateral support surface.
  • Two handles are preferably formed opposite one another on the pump housing, so that two opposite lateral bearing surfaces are formed.
  • the handles are preferably designed to be integrated into the casing of the pump housing, in particular into the upper casing part. If the submersible pressure pump is operated in the floating suction situation, the submersible pressure pump is preferably placed on its side and not positioned standing on the ground, since access to the second housing inlet on the bottom of the pump housing for connecting the hose is easier when the submersible pressure pump is lying. The submersible pressure pump, with the hose connected, then lies stably on one side on a support surface formed by a handle. By making the handles or the contact surfaces as flat as possible, the submersible pressure pump is prevented from rolling back and forth and the hose from possibly becoming tangled.
  • a further advantageous embodiment of the submersible pressure pump provides that the on/off circuit of the liquid pump includes a float switch, the float switch detecting a liquid level sufficient for the operation of the submersible pressure pump based on its buoyancy in the liquid.
  • a means for manually overriding the liquid-level-dependent on/off switch is also advantageously provided.
  • the float switch is integrated into the pump housing.
  • the float switch is designed as an external float switch, which is connected to the pump housing by means of a connecting cable.
  • An external float switch preferably has a central body shaped approximately as a three-sided prism, with the connecting cable connected to the body at a triangular edge.
  • the bases of the three-sided prism are preferably designed as isosceles triangles. The distance between the bases of the three-sided prism starting from the connection cable connection advantageously increases, so that the buoyancy of the body of the floating switch increases with increasing distance from the connection cable connection.
  • the float switch thus advantageously has an essentially triangular shape both in plan view and in cross section along a plane through the connecting cable.
  • the triangular edge of the float switch, to which the connection cable is attached, is hereinafter referred to as the front; the opposite side than behind.
  • the buoyancy of the float switch is improved.
  • the buoyancy or the righting moment of the float switch is greater in the rear area of the float switch than at the front due to the triangular basic shape and the broadening of the float switch to the rear. This means that the float switch is already erected even when the liquid level is low.
  • a ring is preferably formed around the central body of the float switch, which ensures better gliding ability of the float switch over a surface and improved buoyancy. As a result of this configuration, the float switch does not get caught as often on unevenness on the ground or in a pump shaft.
  • the float switch can either be integrated into the submersible pressure pump or be designed externally.
  • the floating switch is advantageously integrated into the submersible pressure pump.
  • the override of the liquid level-dependent on/off switch can advantageously be activated here.
  • the invention further relates to the use of a submersible pressure pump according to the invention, described above, in a first suction situation, the liquid being sucked in through the large-area first housing inlet and the submersible pressure pump being operated standing in the liquid.
  • the submersible pressure pump is used in a cistern or a water tank.
  • the invention further relates to the use of an above-described submersible pressure pump according to the invention in a second suction situation, the liquid being sucked in through the single second housing inlet in the bottom of the pump housing and the submersible pressure pump being operated lying on a subsurface.
  • the adapter described above is inserted into the second housing inlet.
  • a hose with a buoyancy unit is advantageously connected to the adapter and the submersible pressure pump lies either in the liquid, for example in a cistern, or the submersible pressure pump lies on solid ground in the dry and only the hose is hanging in the liquid.
  • the submersible pressure pump can also be suspended and operated hanging from a rope, for example.
  • the handles are particularly suitable for attaching a rope.
  • the change between the different uses of the submersible pressure pump with the different suction situations takes place through the different closure of the second housing inlet.
  • the second housing inlet is closed, for example by means of a conventional screw cap, so that the liquid is sucked in through the large-area suction strainer.
  • the adapter is inserted into the second housing inlet and interrupts the fluidic connection to the suction strainer while the liquid is sucked in through the threaded connector in the adapter and the optionally connected hose.
  • a submersible pressure pump 1 is shown in a first embodiment.
  • the figure 1 12 shows a side view of the submersible pressure pump 1 in the first embodiment.
  • the submersible pressure pump 1 comprises a pump housing 2 with a substantially cylindrical shape.
  • the pump housing 2 is surrounded by a multi-part covering, an upper covering part 2a, a middle covering part 2b and a lower covering part 2c.
  • the upper panel part 2a also forms two opposite handles 6.
  • the pump housing 2 has a housing outlet A and two housing inlets E1, E2, through which a liquid can be sucked into the pump housing 2 and pumped out of the pump housing 2 again.
  • the housing outlet A is located at the top of the pump housing 2 and has a threaded connector to which a hose can be attached, for example.
  • the openings of the suction grille of the suction strainer 3 form the first housing inlet E1, which is thus formed over a large area and around the entire circumference of the pump housing 2.
  • the second housing inlet E2 is designed as a single opening in the bottom 8 of the pump housing 2, see FIG Figures 4 to 6 .
  • the submersible pressure pump 1 in the embodiment shown here comprises an external floating switch 14 which is connected to the pump housing 2 via a connecting cable 15 .
  • the float switch 14 ensures that a liquid pump arranged in the pump housing 2 is switched on/off as a function of the liquid level.
  • a holder 7 is attached to one of the two handles 6 or to the upper covering part 2a, into which the power cable 5 or the connecting cable 15 of the float switch 14 or the float switch 14 itself can be hung.
  • the submersible pressure pump 1 can be used and operated in different intake situations.
  • first intake situation shown here as an example there is one Fluidic connection I between the suction inlet 4 and the first housing inlet E1, so that the liquid is drawn in through the strainer 3.
  • second suction situation shown here as an example there is a fluidic connection II between the suction inlet 4 and the second housing inlet E2, so that the liquid is sucked in through the individual second housing inlet E2.
  • the submersible pressure pump 1 is operated in an upright position or lying down.
  • the figure 2 shows a top perspective view and the figure 3 a top view of the submersible pressure pump 1 according to FIG figure 1 .
  • the submersible pressure pump 1 is primarily operated while standing.
  • the figure 4 still shows a bottom perspective view and the figure 5 a bottom view of the submersible pressure pump 1 according to figure 1 .
  • the submersible pressure pump 1 shown here is operated in the first suction situation, i.e. the liquid is sucked through the first housing inlet E1, i.e. the openings of the suction strainer 3, through the suction inlet 4 into the liquid pump in the pump housing 2.
  • the second housing inlet E2 in the base 8 is closed.
  • a simple cover 9 with a bayonet catch is used to close the second housing inlet E2.
  • FIG 6 12 is a cross-sectional view of the submersible pressure pump 1 according to FIG figure 1 shown, in which the path of the liquid according to the fluidic connection I in the first suction situation from the suction strainer 3 to the suction inlet 4 is shown in dashed lines with the second housing inlet E2 closed.
  • the figure 7 shows a side view of an external float switch 14, as in the Figures 1 to 6 is shown.
  • the float switch 14 has a central than three-sided prism shaped body 14a, the connection cable 15 being connected to the body 14a at a triangular edge.
  • the central body 14a widens starting from the connecting cable 15, that is to say it becomes wider.
  • the body 14a experiences the greatest buoyancy or the greatest righting moment in the outer area, ie opposite the edge of the triangle to which the connecting cable 15 is attached.
  • a ring 14b is formed around the central body 14a of the float switch 14, which provides better gliding ability of the float switch over a surface as well as further improved buoyancy.
  • the figure 8 12 shows a side view of the submersible pressure pump 1 in the other embodiment.
  • the submersible pressure pump 1 according to figure 8 differs from the submersible pressure pump 1 according to the figure 1 is that initially the float switch is not designed as an external float switch, but is integrated into the pump housing 2 and is therefore not visible.
  • the submersible pressure pump 1 differs according to the figure 8 from the submersible pressure pump 1 according to the figure 1 that the strainer 3 and thus the first housing inlet E1 is significantly larger.
  • the submersible pressure pump 1 is also operated in the second suction situation, ie the liquid is sucked through the second housing inlet E2 through the suction inlet 4 into the liquid pump in the pump housing 2 .
  • the liquid pump 1 is mainly operated while lying down, see FIG figure 13 .
  • the figure 9 shows a top perspective view and the figure 10 a top view of the submersible pressure pump 1 according to FIG figure 8 .
  • the two handles 6 are flattened in the upper area and together with the middle covering part 2b form two lateral three-point-type contact surfaces for the submersible pressure pump 1.
  • the first fluidic connection I must be interrupted and the second fluidic connection II established.
  • the cover 9, which closes the second housing inlet E2 is exchanged for an adapter 10. The exchange of cover 9 and adapter 10 takes place without tools.
  • the figure 11 still shows a bottom perspective view and the figure 12 a bottom view of the submersible pressure pump 1 according to figure 8 .
  • the adapter 10 is also designed as a type of cover, which in this embodiment is screwed into the second housing inlet E2 by means of a bayonet lock.
  • the adapter 10 has an open threaded connector 11 which extends to the suction inlet 4 so that on the one hand the second fluidic connection II is created and on the other hand the first fluidic connection I is interrupted. The liquid is then sucked in through the threaded connector 11 of the adapter 10 via the suction inlet 4 .
  • FIG 13 12 is a cross-sectional view of the submersible pressure pump 1 according to FIG figure 8 shown, in which the path of the liquid according to the fluidic connection II in the second suction situation through the threaded connector 11 of the adapter 10 to the suction inlet 4 with an interrupted first fluidic connection I is shown in dashed lines.
  • the figure 14 shows a schematic representation of the submersible pressure pump 1 according to FIG figure 8 , which in the second suction situation lying down, the so-called floating extraction, is operated.
  • the submersible pressure pump 1 lies on one of its lateral bearing surfaces on the bottom of a cistern 20 filled with water.
  • the water surface is indicated as a dashed line.
  • a hose 21 is connected to the housing outlet A, which hose conveys the water out of the cistern 20 .
  • a tube 12 is also connected to the threaded socket of the adapter, at the other end of which a buoyancy unit 13 in the form of an air-filled balloon is attached. The balloon holds the hose 12 up so that the water is always sucked in close to the surface in order to prevent impurities deposited on the bottom from entering the liquid pump.
  • the invention therefore proposes a submersible pressure pump for liquid, at least having a pump housing with a housing outlet, a first large-area housing inlet and a second individual housing inlet, a liquid pump arranged in the pump housing and a suction inlet into the liquid pump, with a fluidic
  • a connection between the suction inlet and the first housing inlet in a second suction situation there is a fluid connection between the suction inlet and the second housing inlet, with an adapter being provided for changing from the first suction situation to the second suction situation, which is designed in such a way that the fluid connection is interrupted between the suction inlet and the first housing inlet and at the same time the fluidic connection between the suction inlet and the second housing inlet is established.
  • the invention further relates to the use of the submersible pressure pump both in the first intake situation and in the second intake situation.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
EP21202591.0A 2020-11-19 2021-10-14 Pompe submersible à pression pour liquide et son utilisation Active EP4001655B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22172716.7A EP4074977B1 (fr) 2020-11-19 2021-10-14 Pompe submersible à pression pour liquide et son utilisation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020130566.4A DE102020130566A1 (de) 2020-11-19 2020-11-19 Tauchdruckpumpe für Flüssigkeit und deren Verwendung

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP22172716.7A Division-Into EP4074977B1 (fr) 2020-11-19 2021-10-14 Pompe submersible à pression pour liquide et son utilisation
EP22172716.7A Division EP4074977B1 (fr) 2020-11-19 2021-10-14 Pompe submersible à pression pour liquide et son utilisation

Publications (2)

Publication Number Publication Date
EP4001655A1 true EP4001655A1 (fr) 2022-05-25
EP4001655B1 EP4001655B1 (fr) 2024-02-21

Family

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EP21202591.0A Active EP4001655B1 (fr) 2020-11-19 2021-10-14 Pompe submersible à pression pour liquide et son utilisation
EP22172716.7A Active EP4074977B1 (fr) 2020-11-19 2021-10-14 Pompe submersible à pression pour liquide et son utilisation

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Application Number Title Priority Date Filing Date
EP22172716.7A Active EP4074977B1 (fr) 2020-11-19 2021-10-14 Pompe submersible à pression pour liquide et son utilisation

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DE (1) DE102020130566A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018162044A1 (fr) * 2017-03-07 2018-09-13 Husqvarna Ab Pompe immergée
US20190120233A1 (en) * 2017-08-31 2019-04-25 Leo Group Pump (Zhejiang) Co., Ltd. Submersible pump
US20190154039A1 (en) * 2017-05-23 2019-05-23 Gp Enterprises Co., Ltd Anti-Blocking Ultra-Low Water Level Land Submersible Amphibious Pump

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7115805U (de) 1971-04-23 1971-07-15 Oase Pumpen Wuebker A & Soehne Maschinenfabrik Mehrzweck-tauchpumpe
DE2618068A1 (de) 1976-04-24 1977-11-10 Albert Blum Pumpenaggregat
EP0066568A1 (fr) 1980-12-11 1982-12-15 BLUM, Albert Dispositif pour enclencher et declencher une pompe entrainee par moteur electrique
DE3607466A1 (de) 1986-03-07 1987-09-24 Blum Albert Pumpenaggregat mit einer niveauschalteinrichtung
DE102005031420B4 (de) 2005-07-04 2010-07-08 Al-Ko Kober Ag Kombinierte Tauch-/Flachabsaug-Rotationspumpe mit konzentrischer Laufradeintrittsöffnung
DE102011120837B4 (de) 2011-12-13 2014-10-16 AL-KO Geräte GmbH Tauchpumpe für Flüssigkeit mit automatischer Schaltvorrichtung
US9362072B2 (en) 2012-06-07 2016-06-07 Pentair Flow Technologies, Llc Magnetic float switch

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018162044A1 (fr) * 2017-03-07 2018-09-13 Husqvarna Ab Pompe immergée
US20190154039A1 (en) * 2017-05-23 2019-05-23 Gp Enterprises Co., Ltd Anti-Blocking Ultra-Low Water Level Land Submersible Amphibious Pump
US20190120233A1 (en) * 2017-08-31 2019-04-25 Leo Group Pump (Zhejiang) Co., Ltd. Submersible pump

Also Published As

Publication number Publication date
DE102020130566A1 (de) 2022-05-19
EP4001655B1 (fr) 2024-02-21
EP4074977B1 (fr) 2023-08-09
EP4074977A1 (fr) 2022-10-19

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