EP4001655B1 - Submersible pressure pump for liquid and use thereof - Google Patents
Submersible pressure pump for liquid and use thereof Download PDFInfo
- Publication number
- EP4001655B1 EP4001655B1 EP21202591.0A EP21202591A EP4001655B1 EP 4001655 B1 EP4001655 B1 EP 4001655B1 EP 21202591 A EP21202591 A EP 21202591A EP 4001655 B1 EP4001655 B1 EP 4001655B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure pump
- housing
- liquid
- pump
- submersible pressure
- 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.)
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Links
- 239000007788 liquid Substances 0.000 title claims description 88
- 238000005253 cladding Methods 0.000 claims description 13
- 230000001419 dependent effect Effects 0.000 claims description 8
- 238000005096 rolling process Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000000605 extraction Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 2
- 229920006328 Styrofoam Polymers 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000008261 styrofoam Substances 0.000 description 1
Images
Classifications
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- 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
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- 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
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- 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
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- 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 basket and a second, individual housing inlet formed 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 input -/off circuit, and a suction inlet into 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, the second housing inlet being closed, and in 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 individual second housing inlet, with an adapter being provided for changing from the first suction situation to the second suction situation, which is designed such that the fluidic Connection between the suction inlet and the first housing inlet is interrupted
- 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 close to the ground in the lower area of the submersible pressure pump through the large suction basket or via an additional hose which is connected to the bottom of the pump and floats near the surface of the liquid using a buoyancy unit, so that the Liquid is sucked in near the surface.
- floating extraction or suction the submersible pressure pump is placed on its side so that the hose can be connected to the bottom of the pump.
- conventional submersible pressure pumps do not lie stably on their side on the ground and then roll back and forth.
- changing between the two suction situations is complex because the submersible pressure pump has to be partially dismantled for floating extraction, i.e. for installing the hose.
- the inventors have recognized that the change in suction situations or the necessary changes to the submersible pressure pump can be done without tools, without having to at least partially dismantle 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 adapter design.
- an external float switch experiences improved buoyancy if its righting moment is different depending on the area of the float switch.
- a submersible pressure pump for liquid at least comprising a pump housing with a housing outlet, a first, large-area housing inlet designed as a suction strainer and a second, individual housing inlet formed 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 into 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, the second housing inlet being closed, and in 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 individual second housing inlet, with an adapter being provided for changing from the first suction situation to the second suction situation, which is designed such that the fluidic Connection between the suction inlet and the first housing inlet is interrupted and at the
- the liquid is preferably water. However, in principle, 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 basket 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 laterally, but preferably in the lower region of the pump housing.
- the second housing inlet is designed as a single opening in the bottom of the pump housing.
- the pump housing can be made in one piece or in several parts. Furthermore, a cover for the pump housing can be provided to protect the pump housing and to improve handling of the submersible pressure pump.
- the cladding is made in one piece or in several parts. In a particularly favorable embodiment, the cladding is made in several parts includes at least an upper fairing part, a middle fairing part and a lower fairing 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 is sucked in through one of the housing inlets and then enters the liquid pump.
- the liquid pump includes, for example, three or four impellers, which generate the necessary negative pressure 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 lock or an insertable cap such as a rubber cap or the like.
- the liquid is then sucked in through the large first housing inlet.
- a fluidic connection is formed 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 sucked in through the individual second housing inlet.
- an adapter is used to change from the first suction situation to the second suction situation.
- This adapter is inserted into the second housing inlet instead of the conventional closure, which closes the second housing inlet in the base in the first suction situation.
- the adapter is preferably provided with an additional sealing ring for sealing the suction thread from the suction opening of the impeller set.
- 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 suction situation is therefore carried out in a simple manner by replacing the cover in the second housing inlet with the adapter or vice versa. This is advantageously done without tools.
- Another advantage is that it is not necessary to dismantle parts of the submersible pressure pump, in particular parts of the pump housing, to change the suction 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 cover can advantageously be inserted and removed into the second housing inlet 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 lid so that it has an opening.
- the adapter designed as a cover 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 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. That means with others In other words, the liquid can only be sucked in through the threaded connector in the second housing inlet.
- Other embodiments than the threaded connector for producing a suction-tight connection option for connecting a suction hose or a plug-in connection for the suction hose are also within the scope of the invention.
- This suction situation is also referred to below as floating removal or suction. Floating removal is particularly suitable for contaminated liquids, where the impurities usually collect 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 formed opposite each other on the pump housing, so that two opposite lateral support surfaces are formed.
- the handles are preferably integrated into the cladding of the pump housing, in particular into the upper cladding 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 standing on the ground, as 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 down. The submersible pressure pump then lies stably on one side with the hose connected on a support surface formed by a handle. By making the handles or the support surfaces as flat as possible, this prevents the submersible pressure pump from rolling back and forth and possibly causing the hose to become tangled.
- the on/off circuit of the liquid pump comprises a float switch, the float switch detecting a liquid level that is sufficient for the operation of the submersible pressure pump based on its buoyancy in the liquid. Furthermore, a means for manually overriding the liquid level-dependent on/off switch is advantageously provided.
- the float switch is designed as an external float switch, which is connected to the pump housing by means of a connecting cable.
- the external float switch has a central body which is shaped approximately as a three-sided prism, with the connecting cable being connected to the body at a triangular edge.
- the base surfaces of the three-sided prism are preferably designed as isosceles triangles. The distance between the base surfaces of the three-sided prism starting from the connection of the connecting cable increases, so that the buoyancy of the body of the float switch increases with increasing distance from the connection of the connecting cable.
- the float switch therefore has a substantially 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 connecting cable is attached is hereinafter referred to as the front; the opposite side as the back.
- the buoyancy of the float switch is improved.
- the buoyancy or the righting moment of the float switch is due to the triangular basic shape and the Widening of the float switch to the rear in the rear area of the float switch is larger than at the front. This means that the float switch sets itself up even at low liquid levels.
- a ring is formed around the central body of the float switch, which ensures better gliding of the float switch over a surface and improved buoyancy. Thanks to this design, the float switch is less likely to get caught on uneven surfaces or in a pump shaft.
- the float switch can either be integrated into the submersible pressure pump or designed externally.
- the float switch is advantageously integrated into the submersible pressure pump.
- the override of the liquid level-dependent on/off switch can advantageously be activated.
- the invention further relates to the use of a submersible pressure pump according to the invention, described above, in a first suction situation, wherein the liquid is sucked in through the large-area first housing inlet and the submersible pressure pump is operated standing in the liquid.
- the submersible pressure pump is used in a cistern or a water storage tank.
- the invention still further relates to the use of a submersible pressure pump according to the invention, described above, in a second suction situation, wherein the liquid is sucked in through the individual second housing inlet in the bottom of the pump housing and the submersible pressure pump is operated lying on a surface.
- the adapter described above is inserted into the second housing inlet.
- a hose with a is advantageous Buoyancy unit is connected to the adapter and the submersible pressure pump is either in the liquid, for example in a cistern, or the submersible pressure pump is on solid ground in the dry and only the hose hangs in the liquid.
- the submersible pressure pump can also be suspended and operated, for example, hanging on a rope.
- the handles are ideal for attaching a rope.
- the change between the different uses of the submersible pressure pump with the different suction situations is done by the different closure of the second housing inlet.
- the second housing inlet In the first suction situation, 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 suction basket.
- the adapter In the second, floating suction situation, the adapter is inserted into the second housing inlet and interrupts the fluidic connection to the suction basket 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 shows a side view of the submersible pressure pump 1 in the first embodiment.
- the submersible pressure pump 1 includes a pump housing 2 with a substantially cylindrical shape.
- the pump housing 2 is surrounded by a multi-part cladding, an upper cladding part 2a, a middle cladding part 2b and a lower cladding part 2c. Between the middle cladding part 2b and the lower cladding part 2c, a suction basket 3 with a large-area suction grille is arranged with a large number of openings into the interior of the pump housing 2.
- the upper cladding 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, for example, a hose can be attached.
- the openings of the suction grille of the suction basket 3 form the first housing inlet E1, which is therefore 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 Figures 4 to 6 .
- the submersible pressure pump 1 in the embodiment shown here includes an external float 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 depending on the liquid level.
- a holder 7 is attached to one of the two handles 6 or to the upper panel 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 suction situations.
- first suction situation shown here as an example there is a fluidic connection I between the suction inlet 4 and the first housing inlet E1, so that the liquid is sucked in through the suction basket 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 Figure 1 .
- the submersible pressure pump 1 is operated primarily while standing.
- the Figure 4 shows another lower 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, that is, the liquid is sucked through the first housing inlet E1, i.e. the openings of the suction basket 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 lock is used to close the second housing inlet E2.
- FIG 6 is a cross-sectional view of the submersible pressure pump 1 according to the Figure 1 shown in which the path of the liquid according to the fluidic connection I in the first suction situation from the suction basket 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 shown in the Figures 1 to 6 is shown.
- the float switch 14 has a central body 14a shaped as a three-sided prism, with the connecting cable 15 being connected to the body 14a at a triangular edge.
- the central body 14a expands from the connecting cable 15, i.e. becomes wider.
- the body 14a experiences the greatest buoyancy or the greatest righting moment in the outer area, i.e. opposite the triangular edge to which the connecting cable 15 is attached.
- a ring 14b is formed around the central body 14a of the float switch 14, which ensures better sliding of the float switch over a surface and further improved buoyancy.
- the Figure 8 shows a side view of the submersible pressure pump 1 in the other embodiment.
- the submersible pressure pump 1 according to the Figure 8 differs from the submersible pressure pump 1 according to the Figure 1 in that initially the float switch is not designed as an external float switch, but rather is designed to be integrated into the pump housing 2 and therefore cannot be seen.
- the submersible pressure pump 1 differs according to Figure 8 from the submersible pressure pump 1 according to the Figure 1 that the suction basket 3 and thus the first housing inlet E1 is significantly larger.
- the submersible pressure pump 1 is also operated in the second suction situation, that is, 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 operated primarily while lying down, see 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 Figure 8 .
- the two handles 6 are flattened in the upper area and, together with the middle cladding part 2b, form two lateral three-point-like support surfaces for the submersible pressure pump 1.
- the first fluidic connection I must be interrupted and the second fluidic connection II must be established.
- the cover 9, which closes the second housing inlet E2 is replaced with an adapter 10.
- the cover 9 and adapter 10 can be replaced without tools.
- the Figure 11 shows another lower 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 using a bayonet lock.
- the adapter 10 has an open threaded connection 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 is a cross-sectional view of the submersible pressure pump 1 according to the 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 is shown in dashed lines with the first fluidic connection I interrupted.
- the Figure 14 shows a schematic representation of the submersible pressure pump 1 according to Figure 8 , which is operated in the second suction situation while lying down, the so-called floating extraction.
- the submersible pressure pump 1 lies on one of its side support surfaces at the bottom of a water-filled cistern 20.
- the water surface is indicated as a dashed line.
- a hose 21 is connected to the housing outlet A, which conveys the water out of the cistern 20.
- a hose 12 is also connected to the threaded connector 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 at the top so that the water is always sucked in close to the surface in order to avoid contaminants deposited on the bottom from entering the liquid pump.
- the invention proposes a submersible pressure pump for liquid, at least comprising 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, wherein in a first suction situation a fluidic There is a connection between the suction inlet and the first housing inlet, in a second suction situation there is a fluidic 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 such that the fluidic connection between the suction inlet and the first housing inlet is interrupted 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 suction situation and in the second suction situation.
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Description
Die Erfindung betrifft eine Tauchdruckpumpe für Flüssigkeit, zumindest aufweisend ein Pumpengehäuse mit einem Gehäuseauslass, einem ersten als Saugkorb ausgebildeten, großflächigen Gehäuseeinlass und einem zweiten, im Boden des Pumpengehäuses ausgebildeten, einzelnen Gehäuseeinlass, eine in dem Pumpengehäuse angeordnete Flüssigkeitspumpe mit einer flüssigkeitsniveauabhängigen oder druckgesteuerten flüssigkeitsniveauabhängigen Ein-/Aus-Schaltung, und einen Saugeinlass in die Flüssigkeitspumpe, wobei in einer ersten Ansaugsituation eine fluidische Verbindung zwischen dem Saugeinlass und dem ersten Gehäuseeinlass besteht, sodass die Flüssigkeit durch den großflächigen ersten Gehäuseeinlass angesaugt wird, wobei der zweite Gehäuseeinlass verschlossen ist, und in einer zweiten Ansaugsituation eine fluidische Verbindung zwischen dem Saugeinlass und dem zweiten Gehäuseeinlass hergestellt ist, sodass die Flüssigkeit durch den einzelnen zweiten Gehäuseeinlass angesaugt wird, wobei zum Wechsel von der ersten Ansaugsituation zur zweiten Ansaugsituation ein Adapter vorgesehen ist, welcher derart ausgestaltet ist, dass die fluidische Verbindung zwischen dem Saugeinlass und dem ersten Gehäuseeinlass unterbrochen und gleichzeitig die fluidische Verbindung zwischen dem Saugeinlass und dem zweiten Gehäuseeinlass herstellt ist.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 basket and a second, individual housing inlet formed 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 input -/off circuit, and a suction inlet into 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, the second housing inlet being closed, and in 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 individual second housing inlet, with an adapter being provided for changing from the first suction situation to the second suction situation, which is designed such that the fluidic Connection between the suction inlet and the first housing inlet is interrupted and at the same time the fluidic connection between the suction inlet and the second housing inlet is established.
Weiterhin betrifft die Erfindung unterschiedliche Verwendungen einer Tauchdruckpumpe.Furthermore, the invention relates to different uses of a submersible pressure pump.
Aus dem Stand der Technik sind Tauchdruckpumpen bekannt, die auf unterschiedliche Weise eine Flüssigkeit ansaugen können. Die Flüssigkeit wird entweder bodennah im unteren Bereich der Tauchdruckpumpe durch den großflächigen Saugkorb angesaugt oder über einen zusätzlichen Schlauch, welcher am Boden der Pumpe angeschlossen ist und mittels einer Auftriebseinheit nahe der Flüssigkeitsoberfläche schwimmt, sodass die Flüssigkeit nahe der Oberfläche angesaugt wird. Bei dieser so genannten schwimmenden Entnahme oder Ansaugung wird die Tauchdruckpumpe auf die Seite gelegt, um den Schlauch am Boden der Pumpe anschließen zu können. Herkömmliche Tauchdruckpumpen liegen jedoch nicht stabil auf der Seite auf dem Untergrund auf und rollen dann hin und her. Weiterhin ist der Wechsel zwischen den beiden Ansaugsituationen aufwändig, da die Tauchdruckpumpe für die schwimmende Entnahme, also zur Montage des Schlauches, teilweise zerlegt werden muss.Submersible pressure pumps are known from the prior art, which can suck in a liquid in different ways. The liquid is either sucked in close to the ground in the lower area of the submersible pressure pump through the large suction basket or via an additional hose which is connected to the bottom of the pump and floats near the surface of the liquid using a buoyancy unit, so that the Liquid is sucked in near the surface. With this so-called floating extraction or suction, the submersible pressure pump is placed on its side so that the hose can be connected to the bottom of the pump. However, conventional submersible pressure pumps do not lie stably on their side on the ground and then roll back and forth. Furthermore, changing between the two suction situations is complex because the submersible pressure pump has to be partially dismantled for floating extraction, i.e. for installing the hose.
Weiterhin sind externe Schwimmschalter für Tauchdruckpumpen bekannt, welche ein Flüssigkeitsniveau erfassen, um den Betrieb der Pumpe nur für Flüssigkeitsniveaus über einem vorgestimmten Schwellwert zu ermöglichen, um so ein Trockenlaufen der Pumpe zu verhindern. Diese Schwimmschalter erfassen ein ausreichendes Flüssigkeitsniveau, indem sie durch ihren eigenen Auftrieb in eine aufrechte Lage gebracht werden. Je nach Ausgestaltung der bisher bekannten Schwimmschalter ist der Auftrieb jedoch sehr gering.Furthermore, external float switches for submersible pressure pumps are known, which detect a liquid level in order to enable the pump to operate only for liquid levels above a predetermined threshold value in order to prevent the pump from running dry. These float switches detect a sufficient liquid level by using their own buoyancy to bring them into an upright position. However, depending on the design of the previously known float switches, the buoyancy is very low.
Als Stand der Technik wird auf die Druckschriften
Es ist daher Aufgabe der Erfindung, eine verbesserte Tauchdruckpumpe bereitzustellen, die in unterschiedlichen Ansaugsituationen verwendet werden kann.It is therefore the object of the invention to provide an improved submersible pressure pump that can be used in different suction situations.
Diese Aufgabe wird durch die Merkmale der unabhängigen Patentansprüche gelöst. Vorteilhafte Weiterbildungen der Erfindung sind Gegenstand untergeordneter Ansprüche.This task is solved by the features of the independent patent claims. Advantageous developments of the invention are the subject of subordinate claims.
Die Erfinder haben erkannt, dass der Wechsel der Ansaugsituationen beziehungsweise die dazu notwendige Veränderung an der Tauchdruckpumpe werkzeuglos erfolgen kann, ohne die Tauchdruckpumpe zumindest teilweise zerlegen zu müssen. Hierfür eignet sich ein einfacher Adapter, welcher werkzeuglos in die Tauchdruckpumpe eingesetzt werden kann, sodass je nach Ausführung des Adapters die eine oder die andere Ansaugsituationen hergestellt ist.The inventors have recognized that the change in suction situations or the necessary changes to the submersible pressure pump can be done without tools, without having to at least partially dismantle 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 adapter design.
Weiterhin haben die Erfinder erkannt, dass ein externer Schwimmschalter einen verbesserten Auftrieb erfährt, wenn sein aufrichtendes Moment je nach Bereich des Schwimmschalters unterschiedlich groß ist.Furthermore, the inventors have recognized that an external float switch experiences improved buoyancy if its righting moment is different depending on the area of the float switch.
Demgemäß schlagen die Erfinder vor, eine Tauchdruckpumpe für Flüssigkeit, zumindest aufweisend ein Pumpengehäuse mit einem Gehäuseauslass, einem ersten als Saugkorb ausgebildeten, großflächigen Gehäuseeinlass und einem zweiten, im Boden des Pumpengehäuses ausgebildeten, einzelnen Gehäuseeinlass, eine in dem Pumpengehäuse angeordnete Flüssigkeitspumpe mit einer flüssigkeitsniveauabhängigen oder druckgesteuerten Ein-/AusSchaltung, und einen Saugeinlass in die Flüssigkeitspumpe, wobei in einer ersten Ansaugsituation eine fluidische Verbindung zwischen dem Saugeinlass und dem ersten Gehäuseeinlass besteht, sodass die Flüssigkeit durch den großflächigen ersten Gehäuseeinlass angesaugt wird, wobei der zweite Gehäuseeinlass verschlossen ist, und in einer zweiten Ansaugsituation eine fluidische Verbindung zwischen dem Saugeinlass und dem zweiten Gehäuseeinlass hergestellt ist, sodass die Flüssigkeit durch den einzelnen zweiten Gehäuseeinlass angesaugt wird, wobei zum Wechsel von der ersten Ansaugsituation zur zweiten Ansaugsituation ein Adapter vorgesehen ist, welcher derart ausgestaltet ist, dass die fluidische Verbindung zwischen dem Saugeinlass und dem ersten Gehäuseeinlass unterbrochen und gleichzeitig die fluidische Verbindung zwischen dem Saugeinlass und dem zweiten Gehäuseeinlass herstellt ist, dahingehend zu verbessern, dass die Ein-/Aus-Schaltung einen Schwimmschalter umfasst, wobei der Schwimmschalter ein für den Betrieb der Tauchdruckpumpe ausreichendes Flüssigkeitsniveau anhand seines Auftriebes in der Flüssigkeit erfasst und der Schwimmschalter als externer Schwimmschalter ausgebildet ist, welcher mittels eines Verbindungskabels mit dem Pumpengehäuse verbunden ist, wobei weiterhin der Schwimmschalter einen zentralen Körper aufweist, welcher annähernd als dreiseitiges Prisma geformt ist, wobei das Verbindungskabel an einer Dreieckskante mit dem Körper verbunden ist, der Abstand der Grundflächen des dreiseitigen Prismas ausgehend vom Anschluss des Verbindungskabels zunimmt, sodass der Auftrieb des Körpers mit steigender Entfernung vom Anschluss des Verbindungskabels steigt, und um den zentralen Körper des Schwimmschalters ein Ring ausgebildet ist, welcher für eine bessere Gleitfähigkeit des Schwimmschalters über einen Untergrund sowie einen verbesserten Auftrieb sorgt.Accordingly, the inventors propose a submersible pressure pump for liquid, at least comprising a pump housing with a housing outlet, a first, large-area housing inlet designed as a suction strainer and a second, individual housing inlet formed 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 into 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, the second housing inlet being closed, and in 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 individual second housing inlet, with an adapter being provided for changing from the first suction situation to the second suction situation, which is designed such that the fluidic Connection between the suction inlet and the first housing inlet is interrupted and at the same time the fluidic connection between the suction inlet and the second housing inlet is established, to be improved in such a way that the on/off circuit comprises a float switch, the float switch being sufficient for the operation of the submersible pressure pump Liquid level is detected based on its buoyancy in the liquid and the float switch is designed as an external float switch, which is connected to the pump housing by means of a connecting cable, with the float switch also having a central body, which is approximately shaped as a three-sided prism, the connecting cable being connected to the body at a triangular edge, the distance between the base surfaces of the three-sided prism increasing starting from the connection of the connecting cable, so that the buoyancy of the body increases with increasing distance from the connection of the connecting cable rises, and a ring is formed around the central body of the float switch, which ensures better gliding of the float switch over a surface and improved buoyancy.
Bei der Flüssigkeit handelt es sich bevorzugt um Wasser. Es kann jedoch grundsätzlich auch jegliche andere Flüssigkeit mit der erfindungsgemäßen Tauchdruckpumpe angesaugt und gefördert werden.The liquid is preferably water. However, in principle, any other liquid can also be sucked in and pumped with the submersible pressure pump according to the invention.
Bei der nachfolgenden Beschreibung einer Tauchdruckpumpe sowie deren Funktion und Verwendung wird stets lediglich auf die für die Erfindung wesentlichen Merkmale eingegangen.In the following description of a submersible pressure pump and its function and use, only the features essential to the invention are discussed.
Die erfindungsgemäße Tauchdruckpumpe weist ein Pumpengehäuse auf. Weiterhin erfindungsgemäß weist das Pumpengehäuse einen Gehäuseauslass und zwei Gehäuseeinlässe auf. Der erste Gehäuseeinlass ist als Saugkorb mit einem großflächigen Ansauggitter ausgebildet und stellt einen großflächigen Einlass mit einer Vielzahl an Öffnungen wie runden Löchern, Schlitzen oder dergleichen dar. Die Öffnungen des ersten Gehäuseeinlasses sind seitlich, jedoch bevorzugt im unteren Bereich des Pumpengehäuses ausgebildet. Der zweite Gehäuseeinlass ist als einzelne Öffnung im Boden des Pumpengehäuses ausgebildet.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 basket 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 laterally, but preferably in the lower region of the pump housing. The second housing inlet is designed as a single opening in the bottom of the pump housing.
Das Pumpengehäuse kann einteilig oder mehrteilig ausgeführt sein. Weiterhin kann zum Schutz des Pumpengehäuses und zum besseren Handling der Tauchdruckpumpe eine Verkleidung des Pumpengehäuses vorgesehen sein. Die Verkleidung ist einteilig oder mehrteilig ausgeführt. In einer besonders günstigen Ausführungsform ist die Verkleidung mehrteilig ausgeführt und umfasst zumindest ein oberes Verkleidungsteil, ein mittleres Verkleidungsteil und ein unteres Verkleidungsteil.The pump housing can be made in one piece or in several parts. Furthermore, a cover for the pump housing can be provided to protect the pump housing and to improve handling of the submersible pressure pump. The cladding is made in one piece or in several parts. In a particularly favorable embodiment, the cladding is made in several parts includes at least an upper fairing part, a middle fairing part and a lower fairing part.
Weiterhin weist die Tauchdruckpumpe eine in dem Pumpengehäuse angeordnete Flüssigkeitspumpe mit einer flüssigkeitsniveauabhängigen oder druckgesteuerten Ein-/AusSchaltung und einen Saugeinlass in die Flüssigkeitspumpe auf, durch welchen die Flüssigkeit durch einen der Gehäuseeinlasse angesaugt wird und dann in die Flüssigkeitspumpe gelangt. Zwischen dem Saugeinlass und den Gehäuseeinlassen liegt somit grundsätzlich eine fluidische Verbindung vor. Die Flüssigkeitspumpe umfasst beispielsweise drei oder vier Laufräder, welche den notwendigen Unterdruck zum Ansaugen der Flüssigkeit erzeugen. Andere Ausführungsformen der Flüssigkeitspumpe sind ebenfalls möglich.Furthermore, 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 is sucked in through one of the housing inlets and then enters the liquid pump. There is therefore fundamentally a fluidic connection between the suction inlet and the housing inlets. The liquid pump includes, for example, three or four impellers, which generate the necessary negative pressure to suck in the liquid. Other embodiments of the liquid pump are also possible.
Je nach Ansaugsituation wird die Flüssigkeit entweder durch den ersten Gehäuseeinlass oder den zweiten Gehäuseeinlass angesaugt. Entsprechend ist in der ersten Ansaugsituation eine fluidische Verbindung zwischen dem Saugeinlass und dem ersten Gehäuseeinlass ausgebildet, wobei der zweite Gehäuseeinlass verschlossen ist, beispielsweise mittels eines Schraubdeckels oder eines Deckels mit Bajonettverschluss oder eines einsteckbaren Deckels wie zum Beispiel einer Gummikappe oder Ähnlichem. Die Flüssigkeit wird dann durch den großflächigen ersten Gehäuseeinlass angesaugt. In der zweiten Ansaugsituation ist eine fluidische Verbindung zwischen dem Saugeinlass und dem zweiten Gehäuseeinlass ausgebildet, während gleichzeitig die fluidische Verbindung zwischen dem Saugeinlass und dem ersten Gehäuseeinlass unterbrochen ist, sodass die Flüssigkeit durch den einzelnen zweiten Gehäuseeinlass angesaugt wird.Depending on the suction situation, the liquid is sucked in either through the first housing inlet or the second housing inlet. Accordingly, in the first suction situation, 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 lock or an insertable cap such as a rubber cap or the like. The liquid is then sucked in through the large first housing inlet. In the second suction situation, a fluidic connection is formed 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 sucked in through the individual second housing inlet.
Zum Wechsel von der ersten Ansaugsituation zur zweiten Ansaugsituation dient erfindungsgemäß ein Adapter. Dieser Adapter wird anstelle des herkömmlichen Verschlusses, welcher in der ersten Ansaugsituation den zweiten Gehäuseeinlass im Boden verschließt, in den zweiten Gehäuseeinlass eingesetzt.According to the invention, an adapter is used to change from the first suction situation to the second suction situation. This adapter is inserted into the second housing inlet instead of the conventional closure, which closes the second housing inlet in the base in the first suction situation.
Vorzugsweise ist der Adapter mit einem zusätzlichen Dichtring zum Abdichten des Sauggewindes gegenüber der Ansaugöffnung des Laufradsatz versehen. In der zweiten Ansaugsituation unterbricht der Adapter einerseits die fluidische Verbindung zwischen dem Saugeinlass und dem ersten Gehäuseeinlass und stellt andererseits die fluidische Verbindung zwischen dem Saugeinlass und dem zweiten Gehäuseeinlass her. Das Ändern der Ansaugsituation erfolgt somit in einfacher Weise, indem der Deckel in dem zweiten Gehäuseeinlass gegen den Adapter ausgetauscht wird oder andersrum. Dies erfolgt vorteilhafterweise werkzeuglos. Weiterhin vorteilhaft ist es nicht notwendig, Teile der Tauchdruckpumpe, insbesondere Teile des Pumpengehäuses, für den Wechsel der Ansaugsituation zu demontieren.The adapter is preferably provided with an additional sealing ring for sealing the suction thread from the suction opening of the impeller set. 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 suction situation is therefore carried out in a simple manner by replacing the cover in the second housing inlet with the adapter or vice versa. This is advantageously done without tools. Another advantage is that it is not necessary to dismantle parts of the submersible pressure pump, in particular parts of the pump housing, to change the suction situation.
Eine einfache Ausführungsform sieht vor, dass der Adapter als Deckel ausgebildet ist, welcher in den zweiten einzelnen Gehäuseeinlass eingesetzt werden kann. Beispielswiese ist der Adapter als Schraubdeckel oder als Deckel mit Bajonettverschluss oder als einsteckbarer Deckel wie zum Beispiel eine Gummikappe oder Ähnliches ausgebildet. Das Einsetzen und Lösen des Deckels in den zweiten Gehäuseeinlass kann vorteilhafterweise werkzeuglos erfolgen. Bevorzugt umfasst der Adapter einen Gewindestutzen, sodass die Flüssigkeit durch den Adapter angesaugt werden kann. Der Gewindestutzen ist vorteilhafterweise mittig in dem Deckel ausgebildet, sodass dieser eine Öffnung aufweist.A simple embodiment provides that the adapter is designed as a cover, which can be inserted into the second individual housing inlet. For example, 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 cover can advantageously be inserted and removed into the second housing inlet 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 lid so that it has an opening.
Somit verschließt der als Deckel ausgebildete Adapter zum einen den zweiten Gehäuseeinlass und erzeugt gleichzeitig über den Gewindestutzen die fluidische Verbindung zum Saugeinlass, sodass die Flüssigkeit durch den Gewindestutzen durch den Deckel angesaugt werden kann. Der Gewindestutzen wird mit dem Deckel in den zweiten Gehäuseeinlass eingesetzt und dabei vorteilhafterweise so auf den Saugeinlass gesetzt, dass der Saugeinlass ausschließlich mit dem zweiten Gehäuseeinlass beziehungsweise der Öffnung des Adapterdeckels durch den Gewindestutzen verbunden ist. Das heißt mit anderen Worten, dass die Flüssigkeit nur durch den Gewindestutzen in dem zweiten Gehäuseeinlass angesaugt werden kann. Andere Ausführungsformen als der Gewindestutzen zum Herstellen einer saugdichten Verbindungsmöglichkeit zum Anschließen eines Saugschlauches oder eines aufsteckbaren Anschlusses für den Saugschlauch liegen ebenfalls im Rahmen der Erfindung.Thus, the adapter designed as a cover on the one hand 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 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. That means with others In other words, the liquid can only be sucked in through the threaded connector in the second housing inlet. Other embodiments than the threaded connector for producing a suction-tight connection option for connecting a suction hose or a plug-in connection for the suction hose are also within the scope of the invention.
Besonders günstig ist in der zweiten Ansaugsituation ein Schlauch mit einer an einem Ende befestigten Auftriebseinheit und einem Gewinde an dem anderen Ende vorgesehen, welcher mit dem Gewindestutzen verbunden werden kann. Durch die Auftriebseinheit an dem Schlauch, beispielsweise eine luftgefüllte Kugel, beispielsweise ein Ballon, oder eine Styroporkugel, steigt dieses Ende des Schlauches stets in Richtung Flüssigkeitsoberfläche, sodass die Flüssigkeit im Bereich der Oberfläche angesaugt wird. Diese Ansaugsituation wird im Folgenden auch als schwimmende Entnahme beziehungsweise Ansaugung bezeichnet. Die schwimmende Entnahme eignet sich vor allem für verunreinigte Flüssigkeiten, bei denen sich die Verunreinigungen normalerweise in den tieferen Bereichen sammeln. Der Schlauch kann bevorzugt werkzeuglos an dem Gewindestutzen des Adapters befestigt werden.Particularly advantageous in the second suction situation is a hose with a buoyancy unit attached at one end and a thread at the other end, which can be connected to the threaded connector. 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 towards 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 removal is particularly suitable for contaminated liquids, where the impurities usually collect in the deeper areas. The hose can preferably be attached to the threaded connector of the adapter without tools.
Eine vorteilhafte Ausführungsform der Tauchdruckpumpe sieht mindestens einen Handgriff am Pumpengehäuse vor, welcher mindestens eine seitliche Auflagefläche ausbildet. Bevorzugt sind zwei Handgriffe gegenüberliegend am Pumpengehäuse ausgebildet, sodass zwei gegenüberliegende seitliche Auflageflächen ausgebildet sind. Weiterhin bevorzugt sind die Handgriffe in die Verkleidung des Pumpengehäuses, insbesondere in das obere Verkleidungsteil, integriert ausgebildet. Wird die Tauchdruckpumpe in der schwimmenden Ansaugsituation betrieben, wird die Tauchdruckpumpe bevorzugt auf die Seite gelegt und nicht stehend auf dem Untergrund positioniert, da der Zugang zum zweiten Gehäuseeinlass am Boden des Pumpengehäuses zum Anschluss des Schlauches bei liegender Tauchdruckpumpe einfacher ist. Die Tauchdruckpumpe liegt dann mit angeschlossenem Schlauch stabil auf einer Seite auf einer durch einen Handgriff ausgebildeten Auflagefläche. Durch eine möglichst flache Ausbildung der Handgriffe beziehungsweise der Auflageflächen wird verhindert, dass die Tauchdruckpumpe hin und her rollt und sich möglicherweise der Schlauch verheddert.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. Preferably, two handles are formed opposite each other on the pump housing, so that two opposite lateral support surfaces are formed. Furthermore, the handles are preferably integrated into the cladding of the pump housing, in particular into the upper cladding 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 standing on the ground, as 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 down. The submersible pressure pump then lies stably on one side with the hose connected on a support surface formed by a handle. By making the handles or the support surfaces as flat as possible, this prevents the submersible pressure pump from rolling back and forth and possibly causing the hose to become tangled.
Erfindungsgemäß umfasst die Ein-/Aus-Schaltung der Flüssigkeitspumpe einen Schwimmschalter, wobei der Schwimmschalter ein für den Betrieb der Tauchdruckpumpe ausreichendes Flüssigkeitsniveau anhand seines Auftriebes in der Flüssigkeit erfasst. Weiterhin vorteilhaft ist ein Mittel zum manuellen Übersteuern der flüssigkeitsniveauabhängigen Ein-/Aus-Schaltung vorgesehen.According to the invention, the on/off circuit of the liquid pump comprises a float switch, the float switch detecting a liquid level that is sufficient for the operation of the submersible pressure pump based on its buoyancy in the liquid. Furthermore, a means for manually overriding the liquid level-dependent on/off switch is advantageously provided.
Weiterhin erfindungsgemäß ist der Schwimmschalter als externer Schwimmschalter ausgebildet, welcher mittels eines Verbindungskabels mit dem Pumpengehäuse verbunden ist. Der externe Schwimmschalter weist einen zentralen Körper auf, welcher annähernd als dreiseitiges Prisma geformt ist, wobei das Verbindungskabel an einer Dreieckskante mit dem Körper verbunden ist. Weiterhin bevorzugt sind die Grundflächen des dreiseitigen Prismas als gleichschenkelige Dreiecke ausgebildet. Der Abstand der Grundflächen des dreiseitigen Prismas ausgehend vom Anschluss des Verbindungskabels nimmt zu, sodass der Auftrieb des Körpers des Schwimmschalters mit steigender Entfernung vom Anschluss des Verbindungskabels steigt. Vorteilhafterweise hat der Schwimmschalter somit sowohl in der Draufsicht als auch im Querschnitt entlang einer Ebene durch das Verbindungskabel eine im Wesentlichen dreieckige Form. Die Dreieckskante des Schwimmschalters, an der das Verbindungskabel befestigt ist, wird im Folgenden als vorne bezeichnet; die gegenüberliegende Seite als hinten. Zum einen des Schwimmschalters und zum anderen durch die Verbreiterung des Schwimmschalters entlang zwei Achsen wird der Auftrieb des Schwimmschalters verbessert. Der Auftrieb beziehungsweise das aufrichtende Moment des Schwimmschalters ist durch die dreieckige Grundform und durch die Verbreiterung des Schwimmschalters nach hinten im hinteren Bereich des Schwimmschalters größer als vorne. Somit richtet sich der Schwimmschalter auch bei geringen Flüssigkeitsniveaus bereits auf.Furthermore, according to the invention, the float switch is designed as an external float switch, which is connected to the pump housing by means of a connecting cable. The external float switch has a central body which is shaped approximately as a three-sided prism, with the connecting cable being connected to the body at a triangular edge. Furthermore, the base surfaces of the three-sided prism are preferably designed as isosceles triangles. The distance between the base surfaces of the three-sided prism starting from the connection of the connecting cable increases, so that the buoyancy of the body of the float switch increases with increasing distance from the connection of the connecting cable. Advantageously, the float switch therefore has a substantially 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 connecting cable is attached is hereinafter referred to as the front; the opposite side as the back. On the one hand the float switch and on the other hand by widening the float switch along two axes, the buoyancy of the float switch is improved. The buoyancy or the righting moment of the float switch is due to the triangular basic shape and the Widening of the float switch to the rear in the rear area of the float switch is larger than at the front. This means that the float switch sets itself up even at low liquid levels.
Zudem ist um den zentralen Körper des Schwimmschalters ein Ring ausgebildet, welcher für eine bessere Gleitfähigkeit des Schwimmschalters über einen Untergrund sowie einen verbesserten Auftrieb sorgt. Der Schwimmschalter bleibt durch diese Ausgestaltung beispielsweise weniger an Unebenheiten am Untergrund oder in einem Pumpenschacht hängen.In addition, a ring is formed around the central body of the float switch, which ensures better gliding of the float switch over a surface and improved buoyancy. Thanks to this design, the float switch is less likely to get caught on uneven surfaces or in a pump shaft.
In der ersten Ansaugsituation kann der Schwimmschalter entweder in die Tauchdruckpumpe integriert oder extern ausgebildet sein. In der zweiten Ansaugsituation, also bei der schwimmenden Entnahme, ist der Schwimmschalter vorteilhafterweise in die Tauchdruckpumpe integriert. Hier kann vorteilhafterweise die Übersteuerung der flüssigkeitsniveauabhängigen Ein-/Aus-Schaltung aktiviert sein.In the first suction situation, the float switch can either be integrated into the submersible pressure pump or designed externally. In the second suction situation, i.e. during floating extraction, the float switch is advantageously integrated into the submersible pressure pump. Here, the override of the liquid level-dependent on/off switch can advantageously be activated.
Weiter betrifft die Erfindung die Verwendung einer erfindungsgemäßen, voranstehend beschriebenen Tauchdruckpumpe in einer ersten Ansaugsituation, wobei die Flüssigkeit durch den großflächigen ersten Gehäuseeinlass angesaugt wird und die Tauchdruckpumpe in der Flüssigkeit stehend betrieben wird. Beispielsweise wird die Tauchdruckpumpe in einer Zisterne oder einem Wasserspeicher eingesetzt.The invention further relates to the use of a submersible pressure pump according to the invention, described above, in a first suction situation, wherein the liquid is sucked in through the large-area first housing inlet and the submersible pressure pump is operated standing in the liquid. For example, the submersible pressure pump is used in a cistern or a water storage tank.
Noch weiter betrifft die Erfindung die Verwendung einer erfindungsgemäßen, voranstehend beschriebenen Tauchdruckpumpe in einer zweiten Ansaugsituation, wobei die Flüssigkeit durch den einzelnen zweiten Gehäuseeinlass im Boden des Pumpengehäuses angesaugt wird und die Tauchdruckpumpe auf einem Untergrund liegend betrieben wird. Um die zweite Ansaugsituation zu ermöglichen, ist der voranstehend beschriebene Adapter in den zweiten Gehäuseeinlass eingesetzt. Vorteilhafterweise ist ein Schlauch mit einer Auftriebseinheit an dem Adapter angeschlossen ist und die Tauchdruckpumpe liegt entweder in der Flüssigkeit, beispielsweise in einer Zisterne, oder die Tauchdruckpumpe liegt auf festem Boden im Trockenen und nur der Schlauch hängt in die Flüssigkeit. Alternativ kann die Tauchdruckpumpe auch aufgehängt und beispielsweise an einem Seil hängend betrieben werden. Zur Befestigung eines Seiles eignen sich vorteilhafterweise die Handgriffe.The invention still further relates to the use of a submersible pressure pump according to the invention, described above, in a second suction situation, wherein the liquid is sucked in through the individual second housing inlet in the bottom of the pump housing and the submersible pressure pump is operated lying on a surface. In order to enable the second suction situation, the adapter described above is inserted into the second housing inlet. A hose with a is advantageous Buoyancy unit is connected to the adapter and the submersible pressure pump is either in the liquid, for example in a cistern, or the submersible pressure pump is on solid ground in the dry and only the hose hangs in the liquid. Alternatively, the submersible pressure pump can also be suspended and operated, for example, hanging on a rope. The handles are ideal for attaching a rope.
Der Wechsel zwischen den unterschiedlichen Verwendungen der Tauchdruckpumpe mit den unterschiedlichen Ansaugsituationen erfolgt durch den unterschiedlichen Verschluss des zweiten Gehäuseeinlasses. In der ersten Ansaugsituation ist der zweite Gehäuseeinlass verschlossen, beispielsweise mittels eines herkömmlichen Schraubdeckels, sodass die Flüssigkeit durch den großflächigen Saugkorb angesaugt wird. In der zweiten, schwimmenden Ansaugsituation ist der Adapter in den zweiten Gehäuseeinlass eingesetzt und unterbricht die fluidische Verbindung zum Saugkorb während durch den Gewindestutzen im Adapter und den optional angeschlossenen Schlauch die Flüssigkeit angesaugt wird.The change between the different uses of the submersible pressure pump with the different suction situations is done by the different closure of the second housing inlet. In the first suction situation, 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 suction basket. In the second, floating suction situation, the adapter is inserted into the second housing inlet and interrupts the fluidic connection to the suction basket while the liquid is sucked in through the threaded connector in the adapter and the optionally connected hose.
Im Folgenden wird die Erfindung anhand der bevorzugten Ausführungsbeispiele mit Hilfe der Figuren näher beschrieben, wobei nur auf die zum Verständnis der Erfindung notwendigen Merkmale eingegangen wird.The invention will be described in more detail below using the preferred exemplary embodiments with the aid of the figures, with only the features necessary to understand the invention being discussed.
Es zeigen im Einzelnen:
- FIG 1:
- eine Seitenansicht einer Tauchdruckpumpe in einer ersten Ausführungsform,
- FIG 2:
- eine obere Perspektivansicht der Tauchdruckpumpe gemäß der
Figur 1 , - FIG 3:
- eine Draufsicht der Tauchdruckpumpe gemäß der
Figur 1 , - FIG 4:
- eine untere Perspektivansicht der Tauchdruckpumpe gemäß der
Figur 1 , - FIG 5:
- eine Unteransicht der Tauchdruckpumpe gemäß der
Figur 1 , - FIG 6:
- eine Querschnittsansicht der Tauchdruckpumpe gemäß der
Figur 1 , - FIG 7:
- eine Seitenansicht eines externen Schwimmschalters,
- FIG 8:
- eine Seitenansicht einer Tauchdruckpumpe in einer anderen Ausführungsform,
- FIG 9:
- eine obere Perspektivansicht der Tauchdruckpumpe gemäß der
,Figur 8 - FIG 10:
- eine Draufsicht der Tauchdruckpumpe gemäß der
,Figur 8 - FIG 11:
- eine untere Perspektivansicht der Tauchdruckpumpe gemäß der
,Figur 8 - FIG 12:
- eine Unteransicht der Tauchdruckpumpe gemäß der
,Figur 8 - FIG 13:
- eine Querschnittsansicht der Tauchdruckpumpe gemäß der
, undFigur 8 - FIG 14:
- eine schematische Darstellung der Tauchdruckpumpe gemäß der
Figur 8 in der schwimmenden Entnahme.
- FIG 1:
- a side view of a submersible pressure pump in a first embodiment,
- FIG 2:
- a top perspective view of the submersible pressure pump according to
Figure 1 , - FIG 3:
- a top view of the submersible pressure pump according to
Figure 1 , - FIG 4:
- a lower perspective view of the submersible pressure pump according to
Figure 1 , - FIG 5:
- a bottom view of the submersible pressure pump according to
Figure 1 , - FIG 6:
- a cross-sectional view of the submersible pressure pump according to
Figure 1 , - FIG 7:
- a side view of an external float switch,
- FIG 8:
- a side view of a submersible pressure pump in another embodiment,
- FIG 9:
- a top perspective view of the submersible pressure pump according to
Figure 8 , - FIG 10:
- a top view of the submersible pressure pump according to
Figure 8 , - FIG 11:
- a lower perspective view of the submersible pressure pump according to
Figure 8 , - FIG 12:
- a bottom view of the submersible pressure pump according to
Figure 8 , - FIG 13:
- a cross-sectional view of the submersible pressure pump according to
Figure 8 , and - FIG 14:
- a schematic representation of the submersible pressure pump according to
Figure 8 in floating extraction.
In den
Die
Das Pumpengehäuse 2 ist umgeben von einer mehrteiligen Verkleidung einem oberen Verkleidungsteil 2a, einem mittleren Verkleidungsteil 2b und einem unteren Verkleidungsteil 2c. Zwischen dem mittleren Verkleidungsteil 2b und dem unteren Verkleidungsteil 2c ist ein Saugkorb 3 mit einem großflächigen Ansauggitter angeordnet mit einer Vielzahl an Öffnungen in das Innere des Pumpengehäuses 2. Das obere Verkleidungsteil 2a bildet zudem zwei gegenüberliegende Handgriffe 6 aus.The
Das Pumpengehäuse 2 weist einen Gehäuseauslass A und zwei Gehäuseeinlässe E1, E2 auf, durch welche eine Flüssigkeit in das Pumpengehäuse 2 eingesaugt und wieder aus dem Pumpengehäuse 2 rausgepumpt werden kann. Der Gehäuseauslass A befindet sich oben am Pumpengehäuse 2 und weist einen Gewindestutzen auf, an den beispielsweise ein Schlauch angebracht werden kann. Die Öffnungen des Ansauggitters des Saugkorbes 3 bilden den ersten Gehäuseeinlass E1, welcher somit großflächig und um den gesamten Umfang des Pumpengehäuses 2 herum ausgebildet ist. Der zweite Gehäuseeinlass E2 ist als einzelne Öffnung im Boden 8 des Pumpengehäuses 2 ausgebildet, siehe
Weiterhin umfasst die Tauchdruckpumpe 1 in der hier gezeigten Ausführungsform einen externen Schwimmschalter 14, welcher über ein Verbindungskabel 15 mit dem Pumpengehäuse 2 verbunden ist. Der Schwimmerschalter 14 gewährleistet eine flüssigkeitsniveauabhängige Ein-/Aus-Schaltung einer in dem Pumpengehäuse 2 angeordneten Flüssigkeitspumpe.Furthermore, the submersible pressure pump 1 in the embodiment shown here includes an
Zudem liegt ein Stromkabel 5 vor, über welches die Tauchdruckpumpe 1 mit Energie versorgt werden kann. An einem der beiden Handgriffe 6 beziehungsweise an dem oberen Verkleidungsteil 2a ist eine Halterung 7 angebracht, in die das Stromkabel 5 oder das Verbindungskabel 15 des Schwimmschalters 14 oder der Schwimmschalter 14 selbst eingehängt werden kann.There is also a
Die Tauchdruckpumpe 1 kann in unterschiedlichen Ansaugsituationen verwendet und betrieben werden In der hier beispielhaft gezeigten ersten Ansaugsituation liegt eine fluidische Verbindung I zwischen dem Saugeinlass 4 und dem ersten Gehäuseeinlass E1 vor, sodass die Flüssigkeit durch den Saugkorb 3 angesaugt wird. In der hier beispielhaft gezeigten zweiten Ansaugsituation liegt eine fluidische Verbindung II zwischen dem Saugeinlass 4 und dem zweiten Gehäuseeinlass E2 vor, sodass die Flüssigkeit durch den einzelnen zweiten Gehäuseeinlass E2 angesaugt wird. Je nach Ansaugsituation wird die Tauchdruckpumpe 1 in aufrecht stehender Position oder im Liegen betrieben.The submersible pressure pump 1 can be used and operated in different suction situations. In the first suction situation shown here as an example, there is a fluidic connection I between the
Die
Die
In der
Die
In den
Die
In der zweiten Ansaugsituation wird die Flüssigkeitspumpe 1 vor allem im Liegen betrieben, siehe
Zum Wechsel von der ersten Ansaugsituation zur zweiten Ansaugsituation muss die erste fluidische Verbindung I unterbrochen und die zweite fluidische Verbindung II hergestellt werden. Dazu wird der Deckel 9, welcher den zweiten Gehäuseeinlass E2 verschließt, gegen einen Adapter 10 ausgetauscht. Das Austauschen von Deckel 9 und Adapter 10 erfolgt werkzeuglos.To change from the first suction situation to the second suction situation, the first fluidic connection I must be interrupted and the second fluidic connection II must be established. For this purpose, the
Die
In der
Die
Insgesamt wird mit der Erfindung also eine Tauchdruckpumpe für Flüssigkeit vorgeschlagen, zumindest aufweisend ein Pumpengehäuse mit einem Gehäuseauslass, einem ersten großflächigen Gehäuseeinlass und einem zweiten einzelnen Gehäuseeinlass, eine in dem Pumpengehäuse angeordnete Flüssigkeitspumpe und einen Saugeinlass in die Flüssigkeitspumpe, wobei in einer ersten Ansaugsituation eine fluidische Verbindung zwischen dem Saugeinlass und dem ersten Gehäuseeinlass besteht, in einer zweiten Ansaugsituation eine fluidische Verbindung zwischen dem Saugeinlass und dem zweiten Gehäuseeinlass besteht, wobei zum Wechsel von der ersten Ansaugsituation zur zweiten Ansaugsituation ein Adapter vorgesehen ist, welcher derart ausgestaltet ist, dass die fluidische Verbindung zwischen dem Saugeinlass und dem ersten Gehäuseeinlass unterbrochen und gleichzeitig die fluidische Verbindung zwischen dem Saugeinlass und dem zweiten Gehäuseeinlass herstellt ist. Weiter betrifft die Erfindung die Verwendung der Tauchdruckpumpe sowohl in der ersten Ansaugsituation als auch in der zweiten Ansaugsituation.Overall, the invention proposes a submersible pressure pump for liquid, at least comprising 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, wherein in a first suction situation a fluidic There is a connection between the suction inlet and the first housing inlet, in a second suction situation there is a fluidic 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 such that the fluidic connection between the suction inlet and the first housing inlet is interrupted 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 suction situation and in the second suction situation.
Obwohl die Erfindung im Detail durch das bevorzugte Ausführungsbeispiel näher illustriert und beschrieben wurde, so ist die Erfindung nicht durch die offenbarten Beispiele eingeschränkt und andere Variationen können vom Fachmann hieraus abgeleitet werden, ohne den Schutzumfang der Erfindung, der durch die folgenden Ansprüche definiert ist, zu verlassen.Although the invention has been illustrated and described in detail by the preferred embodiment, the invention is not limited by the examples disclosed and other variations may be derived therefrom by those skilled in the art without departing from the scope of the invention, which is defined by the following claims leave.
- 11
- TauchdruckpumpeSubmersible pressure pump
- 22
- PumpengehäusePump housing
- 2a2a
- oberes Verkleidungsteilupper fairing part
- 2b2 B
- mittleres Verkleidungsteilmiddle fairing part
- 2c2c
- unteres Verkleidungsteillower fairing part
- 33
- SaugkorbSuction basket
- 44
- SaugeinlassSuction inlet
- 55
- StromkabelPower cable
- 66
- HandgriffHandle
- 77
- Halterungbracket
- 88th
- BodenFloor
- 99
- DeckelLid
- 1010
- AdapterdeckelAdapter cover
- 1111
- Gewindestutzenthreaded connector
- 1212
- SchlauchHose
- 1313
- AuftriebseinheitBuoyancy unit
- 1414
- SchwimmschalterFloat switch
- 14a14a
- KörperBody
- 14b14b
- Ringring
- 1515
- Verbindungskabelconnection cable
- 2020
- Zisternecistern
- 2121
- Auslassschlauchoutlet hose
- AA
- GehäuseauslassHousing outlet
- E1E1
- erster Gehäuseeinlassfirst housing inlet
- E2E2
- zweiter Gehäuseeinlasssecond housing inlet
- II
- fluidische Verbindung in der ersten Ansaugsituationfluidic connection in the first suction situation
- IIII
- fluidische Verbindung in der zweiten Ansaugsituationfluidic connection in the second suction situation
Claims (15)
- Submersible pressure pump (1) for liquid, at least having:1.1. a pump housing (2) with a housing outlet (A), with a first, large-area, housing inlet (E1) in the form of a suction strainer (3), and with a second, individual, housing inlet (E2) formed in the base (8) of the pump housing (2),1.2. a liquid pump which is arranged in the pump housing (2) and which has an arrangement for liquid-level-dependent or pressure-controlled on/off-switching, and1.3. a suction inlet (4) into the liquid pump, wherein,1.4. in a first intake situation, there is a fluidic connection (I) between the suction inlet (4) and the first housing inlet (E1) such that the liquid is sucked in through the large-area first housing inlet (E1), wherein the second housing inlet (E2) is closed off, and, in a second intake situation, there is established a fluidic connection (II) between the suction inlet (4) and the second housing inlet (E2) such that the liquid is sucked in through the individual second housing inlet (E2), wherein,1.5. for changing from the first intake situation to the second intake situation, provision is made of an adaptor (10) which is configured in such a way that the fluidic connection (I) between the suction inlet (4) and the first housing inlet (E1) is interrupted and, at the same time, the fluidic connection (II) between the suction inlet (4) and the second housing inlet (E2) is established, wherein1.6. the arrangement for on/off-switching comprises a float switch (14), wherein the float switch (14), on the basis of its buoyancy in the liquid, detects a liquid level which is sufficient for operation of the submersible pressure pump (1), and the float switch is in the form of an external float switch (14) which is connected to the pump housing (2) by means of a connecting cable (15), characterized in that1.7. the float switch (14) has a central body (14a) which is shaped approximately in the form of a triangular prism, wherein the connecting cable (15) is connected to the body (14a) at a triangle edge,1.8. proceeding from the connection of the connecting cable (15), the spacing between the bases of the triangular prism increases, so that the buoyancy of the body (14a) increases with increasing distance from the connection of the connecting cable (15), and1.9. a ring (14b) is formed around the central body (14a) of the float switch (14), which ring provides for better capability of sliding of the float switch (14) over an underlying surface and also for improved buoyancy.
- Submersible pressure pump (1) according to preceding Patent Claim 1, characterized in that the adaptor (10) is in the form of a cover which can be inserted into the second, individual, housing inlet (E2).
- Submersible pressure pump (1) according to either of preceding Patent Claims 1 and 2, characterized in that the adaptor (10) comprises a threaded connection piece (11) such that the liquid can be sucked in through the adaptor (10).
- Submersible pressure pump (1) according to preceding Patent Claim 3, characterized in that provision is made of a hose (12) with a buoyancy unit (13) fastened to one end and with a thread at the other end, which hose can be connected to the threaded connection piece (11).
- Submersible pressure pump (1) according to one of preceding Patent Claims 1 to 3, characterized in that provision is made on the pump housing (2) of at least one handle (6) which forms at least one lateral bearing surface.
- Submersible pressure pump (1) according to one of preceding Patent Claims 1 to 5, characterized in that the arrangement for on/off-switching of the liquid pump comprises a float switch (14), wherein the float switch (14), on the basis of its buoyancy in the liquid, detects a liquid level which is sufficient for operation of the submersible pressure pump (1).
- Submersible pressure pump (1) according to one of preceding Patent Claims 1 to 6, characterized in that provision is made of a means for manually overriding the liquid-level-dependent or pressure-controlled on/off-switching.
- Submersible pressure pump (1) according to either of preceding Patent Claims 6 and 7, characterized in that the float switch (14) is integrated into the pump housing (2).
- Submersible pressure pump (1) according to either of preceding Patent Claims 6 and 7, characterized in that the float switch is in the form of an external float switch (14) which is connected to the pump housing (2) by means of a connecting cable (15) .
- Submersible pressure pump (1) according to preceding Patent Claim 9, characterized in that the float switch (14) has a central body (14a) which is shaped approximately in the form of a triangular prism, wherein the connecting cable (15) is connected to the body (14a) at a triangle edge.
- Submersible pressure pump (1) according to preceding Patent Claim 10, characterized in that, proceeding from the connection of the connecting cable (15), the spacing between the bases of the triangular prism increases, so that the buoyancy of the body (14a) increases with increasing distance from the connection of the connecting cable (15).
- Submersible pressure pump (1) according to either of preceding Patent Claims 10 and 11, characterized in that a ring (14b) is formed around the central body (14a) of the float switch (14), which ring provides for better capability of sliding of the float switch (14) over an underlying surface and also for improved buoyancy.
- Submersible pressure pump (1) according to one of preceding Patent Claims 1 to 12, characterized in that provision is made laterally at the upper end of the pump housing (2) of at least one handle (6), which is flattened at the upper end, such that the at least one handle (6) forms, together with a middle cladding part (2b) of the submersible pressure pump (1), a lateral three-point-type bearing surface such that, in the second intake situation, the submersible pressure pump (1) lies on one side in a stable manner and the at least one handle (6) prevents the submersible pressure pump (1) from rolling back and forth.
- Use of a submersible pressure pump (1) according to one of preceding Patent Claims 1 to 13 in a first intake situation, wherein the liquid is sucked in through the large-area first housing inlet (E1) and the submersible pressure pump (1) is operated standing in the liquid.
- Use of a submersible pressure pump (1) according to one of preceding Patent Claims 1 to 13 in a second intake situation, wherein the liquid is sucked in through the individual second housing inlet (E2) in the base (8) of the pump housing (2) and the submersible pressure pump (1) is operated lying on an underlying surface.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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EP22172716.7A EP4074977B1 (en) | 2020-11-19 | 2021-10-14 | Submersible pressure pump for liquid and use thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE102020130566.4A DE102020130566A1 (en) | 2020-11-19 | 2020-11-19 | Submersible pressure pump for liquid and its use |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
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EP22172716.7A Division EP4074977B1 (en) | 2020-11-19 | 2021-10-14 | Submersible pressure pump for liquid and use thereof |
EP22172716.7A Division-Into EP4074977B1 (en) | 2020-11-19 | 2021-10-14 | Submersible pressure pump for liquid and use thereof |
Publications (2)
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EP4001655A1 EP4001655A1 (en) | 2022-05-25 |
EP4001655B1 true EP4001655B1 (en) | 2024-02-21 |
Family
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Application Number | Title | Priority Date | Filing Date |
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EP22172716.7A Active EP4074977B1 (en) | 2020-11-19 | 2021-10-14 | Submersible pressure pump for liquid and use thereof |
EP21202591.0A Active EP4001655B1 (en) | 2020-11-19 | 2021-10-14 | Submersible pressure pump for liquid and use thereof |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
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EP22172716.7A Active EP4074977B1 (en) | 2020-11-19 | 2021-10-14 | Submersible pressure pump for liquid and use thereof |
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EP (2) | EP4074977B1 (en) |
DE (1) | DE102020130566A1 (en) |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7115805U (en) | 1971-04-23 | 1971-07-15 | Oase Pumpen Wuebker A & Soehne Maschinenfabrik | MULTI-PURPOSE SUBMERSIBLE PUMP |
DE2618068A1 (en) | 1976-04-24 | 1977-11-10 | Albert Blum | Suction duct connection for submersible pump - has duct either connected with perforated bottom intake or connection for external suction line |
WO1982002113A1 (en) | 1980-12-11 | 1982-06-24 | Kliemt Wolfgang | Device for starting and stopping a pump driven by an electric motor |
DE3607466A1 (en) | 1986-03-07 | 1987-09-24 | Blum Albert | PUMP UNIT WITH A LEVEL SWITCHING DEVICE |
DE102005031420B4 (en) | 2005-07-04 | 2010-07-08 | Al-Ko Kober Ag | Combined immersion / flat suction rotary pump with concentric impeller inlet opening |
DE102011120837B4 (en) | 2011-12-13 | 2014-10-16 | AL-KO Geräte GmbH | Submersible pump for liquid with automatic switching device |
US9362072B2 (en) | 2012-06-07 | 2016-06-07 | Pentair Flow Technologies, Llc | Magnetic float switch |
WO2018162044A1 (en) | 2017-03-07 | 2018-09-13 | Husqvarna Ab | Submersible pump |
CN107044427A (en) | 2017-05-23 | 2017-08-15 | 苏州优德通力科技有限公司 | A kind of amphibious pump of block-resistant type ultra low water level land diving |
CN107387428B (en) | 2017-08-31 | 2024-02-13 | 利欧集团浙江泵业有限公司 | submersible pump |
-
2020
- 2020-11-19 DE DE102020130566.4A patent/DE102020130566A1/en active Pending
-
2021
- 2021-10-14 EP EP22172716.7A patent/EP4074977B1/en active Active
- 2021-10-14 EP EP21202591.0A patent/EP4001655B1/en active Active
Also Published As
Publication number | Publication date |
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EP4074977A1 (en) | 2022-10-19 |
DE102020130566A1 (en) | 2022-05-19 |
EP4001655A1 (en) | 2022-05-25 |
EP4074977B1 (en) | 2023-08-09 |
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