EP3879111A1 - Elektrische pumpe mit erleichterter montage und wartung - Google Patents

Elektrische pumpe mit erleichterter montage und wartung Download PDF

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Publication number
EP3879111A1
EP3879111A1 EP21153817.8A EP21153817A EP3879111A1 EP 3879111 A1 EP3879111 A1 EP 3879111A1 EP 21153817 A EP21153817 A EP 21153817A EP 3879111 A1 EP3879111 A1 EP 3879111A1
Authority
EP
European Patent Office
Prior art keywords
electric pump
footing
tray
pump
bar
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.)
Pending
Application number
EP21153817.8A
Other languages
English (en)
French (fr)
Inventor
Francesco Sinico
Michele Cappocchin
Diego MASSAUA
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.)
DAB Pumps SpA
Original Assignee
DAB Pumps SpA
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 DAB Pumps SpA filed Critical DAB Pumps SpA
Publication of EP3879111A1 publication Critical patent/EP3879111A1/de
Pending legal-status Critical Current

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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
    • F04D13/0606—Canned motor pumps
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D1/06—Multi-stage pumps
    • 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
    • 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
    • F04D15/0088—Testing machines
    • 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
    • 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
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps

Definitions

  • the present invention relates to an electric pump with facilitated assembly and maintenance.
  • An electric pump is a device for moving a liquid, generally water, by drawing it from a first region, by means of an intake duct, and sending it to a second region, by means of a delivery duct.
  • the electric pump comprises a pump body inside of which there are:
  • Some electric pumps are of the vertical type, i.e., they have a vertical configuration for use and a vertical axis of extension, with the mechanical section in the lower part of the electric pump and the electromechanical section in the upper part, above the mechanical section.
  • Some models of vertical electric pumps comprise a base footing, inside which there are two manifolds, a delivery manifold connected to the delivery port and an intake manifold connected to the intake port.
  • the pump body is stably associated with the footing by virtue of a plurality of means for mechanical fixing such as screws, bolts or pins.
  • the aim of the present invention is to provide an electric pump that is capable of improving the background art in one or more of the aspects mentioned above.
  • an object of the invention is to provide an electric pump that allows an easier and quicker association/separation of the pump body and the footing.
  • Another object of the invention is to provide an electric pump that allows quicker and easier assembly/disassembly thereof with respect to similar electric pumps of the known type, with consequent improvements in terms of speed and ease of maintenance.
  • Another object of the invention is to provide an electric pump in which it is not necessary, during assembly/maintenance, to apply/remove individually the means for mechanical fixing between the pump body and the footing.
  • Another object of the invention is to provide an electric pump that does not require the use of a plurality of tools to fix the pump body to the footing or to remove it from said footing.
  • a further object of the present invention is to overcome the drawbacks of the background art in a manner that is alternative to any existing solutions.
  • Another object of the invention is to provide an electric pump that is highly reliable, relatively easy to provide and at competitive costs.
  • an electric pump comprising:
  • an electric pump according to the invention in a first embodiment, is generally designated by the reference numeral 10.
  • the electric pump 10 comprises a pump body 11 inside of which there are:
  • the electric pump 10 is of the vertical type and comprises, below the pump body 11, a footing 19, inside which there are two manifolds:
  • the electric pump 10 is of the vertical type.
  • manifolds 20 and 21 are coplanar, parallel and of the type described in Italian Patent Application 102020000001468 , in the name of this same Applicant.
  • One of the particularities of the electric pump 10 is that it comprises a plurality of means for detachable association between the pump body 11 and the footing 19 which can be actuated from a single point 23 of the electric pump 10.
  • the footing 19 has a substantially tray-like body 24, made of plastic material, with the manifolds 20 and 21 that cross it, parallel to its base 26, by passing through two opposite first side walls 27a, 27b.
  • the pump body 11 is provided with a tray 25, made of plastic material, at the lower end of the mechanical section 12, which encloses the substantially tray-like body 24 of the footing 19.
  • the footing 19 comprises two rotatable bars:
  • the rotatable bars 28a, 28b have a cross-section which is:
  • At least the first rotatable bar 28a has a portion 39 that protrudes from the body 24 of the footing 19 and can be accessed, for its rotation, from the point 23 of the electric pump 10, mentioned above.
  • the second rotatable bar 28b also has a portion that protrudes from the body 24 of the footing 19, not shown in the figures, which is covered by a cap 70.
  • the cap 70 is arranged on the same second side wall 29a in which said point 23 is present.
  • the cap 70 can be removed: in this manner, the disconnection between the pump body 11 and the footing 19 can be performed by actuating only the second rotatable bar 28b or by actuating both rotatable bars 28a and 28b simultaneously.
  • Each engagement element 22a', 22a", 22b', 22b" is engaged with a corresponding bar 31a, 31b of the tray 25 in the configuration for use of the electric pump 10.
  • the bars 31a, 31b of the tray 25 are made of metal, at least partially embedded in the plastic material of which the tray 25 is composed, and are extended on the surface of this tray 25 that is directed toward the footing 19.
  • the bars 31a, 31b of the tray 25 are embedded in the plastic material of the tray 25 except in the regions for engagement with the corresponding engagement elements 22a', 22a", 22b', 22b".
  • Each one of the first engagement elements 22a', 22a', is coplanar with a corresponding second engagement element 22b', 22b".
  • each one of the first engagement elements 22a', 22a" is connected mechanically to a corresponding second engagement element 22b', 22b" by means of a linkage element 30.
  • the linkage element 30 allows to transmit the rotary motion imparted to the first rotatable bar 28a to the second rotatable bar 28b and to coordinate and synchronize the movement of all the engagement elements 22a', 22a", 22b', 22b".
  • each engagement element 22a', 22a", 22b', 22b comprises a plate 32, which is keyed on a corresponding rotatable bar 28a, 28b at right angles thereto.
  • the plate 32 has a rounded edge 33; moreover, an arc-like tab 34 extends from said plate 32, with an extension that is substantially parallel to the extension of the rounded edge 33.
  • the tab 34 is extended substantially starting from one end of the rounded edge 33.
  • An opening 35 for the sliding of a corresponding bar 31a, 31b of the tray 25 is present between the rounded edge 33 and the tab 34 of the plate 32.
  • Figure 10 shows the configuration of two corresponding engagement elements 22a' and 22b' and of the linkage element 30 that connects them, in a configuration for disengagement of the tray 25 from the footing 19.
  • Figure 11 shows the configuration of two corresponding engagement elements 22a' and 22b' and of the linkage element 30 that connects them, in a configuration for engagement of the tray 25 with the footing 19.
  • a shaped portion 36 which duplicates at least partially the profile of the bar 31a, 31b of the tray 25.
  • the shaped portion 36 is adapted for the stable resting of the tray 25 on the footing 19 in the configuration for disengagement of the pump body 11 from the footing 19.
  • stable resting in the present description, is understood to mean a resting that needs an external force in order to allow the relative motion of the tray 25 with respect to the footing 19, due to the sliding of the bars 31a, 31b, of the tray 25 in the openings 35 of the engagement elements 22a', 22a", 22b', 22b".
  • These shaped portions 36 are adapted also to guide and facilitate the assembly of the electric pump 10.
  • the means for detachable association between the pump body 11 and the footing 19 are constituted by:
  • the electric pump 10 comprises a lever 37 for the actuation of the means for detachable association.
  • the lever 37 has an end 38 for interaction with the first rotatable bar 28a of the footing 19, which is shaped complementarily or is complementary to the portion 39 that protrudes from the body 24 of said first rotatable bar 28a.
  • the lever 37 is used only during the step for association or separation of the pump body 11 and of the footing 19.
  • the lever 37 connects to and interacts with the protruding portion 39 of the first rotatable bar 28a, at the point 23 of the electric pump 10, shown above.
  • the lever 37 connects to and interacts with the protruding portion of the second rotatable bar 28b, after removing the cap 70.
  • the installation technician/user actuates the first rotatable bar 28a by means of the lever 37 and the second rotatable bar 28b by means of a per se known socket wrench, or vice versa.
  • the footing 19 has the engagement elements 22a', 22a", 22b', 22b" in the disengagement configuration, shown in Figures 3 , 4 , 4a , 10 .
  • the pump body 11 is arranged on the footing 19, so that the bars 31a, 31b of the tray 25 of the pump body 11 rest on the shaped portions 36 of the engagement elements 22a', 22a", 22b', 22b", with each one of the bars 31a, 31b of the tray 25 parallel to a corresponding rotatable bar 28a, 28b.
  • the lever 37 is associated with the protruding portion 39 of the first rotatable bar 28a, interlocking the protruding portion 39 of the first rotatable bar 28a in the end 38 of the lever 37, in the direction designated by the arrow 40 in Figure 3 , at the point 23 of the electric pump 10.
  • each first engagement element 22a', 22a" Due to the mechanical connection of each first engagement element 22a', 22a" with a corresponding second engagement element 22b', 22b", by means of a linkage element 30, the rotation of the first engagement elements 22a', 22a" entails the synchronized and coordinated rotation of the second engagement elements 22b', 22b".
  • the intake port 13 and the delivery port 42 of the pump body 11 are connected fluidically to the respective manifolds 21 and 20 of the footing 19, each manifold having an inlet 43 conveniently arranged for connection to a corresponding intake port 13 or delivery port 42.
  • Figures 6 to 9 and 12 show an electric pump 110, according to the invention, in a second embodiment.
  • the electric pump 110 is similar to the previous one and its components that correspond to components of the electric pump in its first embodiment bear the same numerals increased by 100.
  • the electric pump 110 comprises, additionally with respect to the electric pump in its first embodiment described above, two secondary removable fixing elements 150 between the pump body 111 and the footing 119.
  • the secondary removable fixing elements 150 are constituted by threaded knobs, which comprise a handle 151 and a stem 155 which extends from the handle 151 and is at least partially threaded.
  • the stem 155 is provided with a wider and threaded end 157 which:
  • the first hole 152 has a first portion 160 with reduced cross-section, which is tapped upon the passage of the end 157 of the stem 155, and a second portion 161 that has a cross-section that is wider and larger than the cross-section of the end 157 of the stem 155.
  • the second portion 161 is proximate to the second hole 153.
  • the wider end 157 of the stem 155 can slide within the second portion 161 of the first hole 152, but the first portion 160, with reduced cross-section, prevents its sliding and any exit from the first hole 152.
  • a spring 154 is present between the handle 151 of each knob 150 and the inlet of the first hole 152, surrounds the stem 155 and is suitable for the elastic return of the stem 155, in order to retract the end 157 of the knob 150 and retain it in the second portion 161 of the first hole 152, once the knob 150 has been unscrewed from the second hole 153.
  • the end 157 of the stem 155 of the knob 150 taps at least the first portion 160 of the hole 152, upon its passage, reaching the second portion 161, and screws into a threaded insert 162 that is present inside the second hole 153.
  • the shapes of the end 157 of the stem 155 and of the first portion of the first hole 152 allow the knob 150 to be always integral with the tray 125, both with the pump body 111 engaged with the footing 119 and with the pump body 111 disengaged from the footing 119.
  • said tray After engaging the tray 125 with the footing 119, in a manner similar to what occurs for the electric pump in its first embodiment, said tray is further secured to the footing 119 by means of the secondary fixing elements 150.
  • the tray 125 has a plurality of feet 156, which extend starting from the surface of the tray that is directed toward the footing 119, in the configuration for use of the electric pump 110.
  • These feet 156 are adapted to allow a stable vertical resting of the pump body 111 when it is not associated with the footing 119.
  • the electric pump 10, 110 comprises a sensor, not shown in the figures, which allows to detect, for example, by means of a signal displayed on the display of the electric pump, not designated in the figures, the correct fixing of the pump body 11, 111, to the footing 19, 119, before putting the electric pump 10, 110 into operation.
  • the invention achieves the intended aim and objects, providing an electric pump that allows easier and quicker association/separation of pump body and footing.
  • the invention provides an electric pump which allows a quicker and easier assembly/disassembly thereof than similar electric pumps of a known type, with consequent improvements in terms of speed and ease of maintenance.
  • the invention provides an electric pump in which it is not necessary, during assembly/maintenance, to apply/remove individually the means for mechanical fixing between the pump body and the footing.
  • the invention provides an electric pump that does not require the use of a plurality of tools in order to fix the pump body to the footing or to remove it therefrom.
  • the materials used may be any according to the requirements and the state of the art.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
EP21153817.8A 2020-03-09 2021-01-27 Elektrische pumpe mit erleichterter montage und wartung Pending EP3879111A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102020000004909A IT202000004909A1 (it) 2020-03-09 2020-03-09 Elettropompa ad assemblaggio e manutenzione facilitata

Publications (1)

Publication Number Publication Date
EP3879111A1 true EP3879111A1 (de) 2021-09-15

Family

ID=70804931

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21153817.8A Pending EP3879111A1 (de) 2020-03-09 2021-01-27 Elektrische pumpe mit erleichterter montage und wartung

Country Status (3)

Country Link
EP (1) EP3879111A1 (de)
CN (1) CN113374700A (de)
IT (1) IT202000004909A1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4549849A (en) * 1982-05-29 1985-10-29 Grundfos A/S Pumping assemblies
DE9208801U1 (de) * 1992-07-01 1992-09-03 Grundfos A/S, Bjerringbro Pumpenaggregat
EP2775145A1 (de) * 2013-03-08 2014-09-10 Dab Pumps S.p.A. Basis für Pumpenvorrichtungen
US20170324298A1 (en) * 2016-05-04 2017-11-09 Grundfos Holding A/S Circulation pump assembly

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4549849A (en) * 1982-05-29 1985-10-29 Grundfos A/S Pumping assemblies
DE9208801U1 (de) * 1992-07-01 1992-09-03 Grundfos A/S, Bjerringbro Pumpenaggregat
EP2775145A1 (de) * 2013-03-08 2014-09-10 Dab Pumps S.p.A. Basis für Pumpenvorrichtungen
US20170324298A1 (en) * 2016-05-04 2017-11-09 Grundfos Holding A/S Circulation pump assembly

Also Published As

Publication number Publication date
IT202000004909A1 (it) 2021-09-09
CN113374700A (zh) 2021-09-10

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