US3659964A - Self-coupling pump unit - Google Patents

Self-coupling pump unit Download PDF

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Publication number
US3659964A
US3659964A US67329A US3659964DA US3659964A US 3659964 A US3659964 A US 3659964A US 67329 A US67329 A US 67329A US 3659964D A US3659964D A US 3659964DA US 3659964 A US3659964 A US 3659964A
Authority
US
United States
Prior art keywords
pump
pump unit
unit
coupling
housing
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.)
Expired - Lifetime
Application number
US67329A
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English (en)
Inventor
Jens Karl Adolf Dahlgren
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.)
Xylem Water Solutions AB
Original Assignee
Stenberg Flygt AB
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 Stenberg Flygt AB filed Critical Stenberg Flygt AB
Application granted granted Critical
Publication of US3659964A publication Critical patent/US3659964A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/26—Couplings of the quick-acting type in which the connection is made by transversely moving the parts together, with or without their subsequent rotation
    • 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
    • F04D29/606—Mounting in cavities
    • F04D29/607—Mounting in cavities means for positioning from outside

Definitions

  • the invention relates to a pump unit immersible in a liquid and consisting of a liquidtight-enclosed motor and a pump with connection leading from the pump housing, the pump unit having a guide which, on lowering and raising of the pump unit, guides the pump connection to and from the vicinity of a coupling unit, the pump unit having a suspension device preferentially so placed that the central axis of the pump unit runs slightly obliquely downwards when the pump unit is freely suspended therein.
  • Another known procedure is to furnish the pump unit with gripping devices which grip across the flange of the outlet pipe.
  • the gripping devices and/or flange of the outlet pipe are given suitably charnfered shoulder areas so that a wedge efi'ect arises between the gripping device and the flange.
  • a fairly good seal is obtained between the pump unit and coupling unit when the area of the outlet is limited to relatively small diameters and/or the pump pressure to such low values that the torque occasioned by the outlet area, the pump pressure and the leverage does not overcome the torque determined by the weight of the pump unit and the distance to its point of gravity.
  • the aim of the present invention is to overcome such disadvantages and to find a new solution which is applicable both to small and large pumps, especially the latter, and provides a sufficiently high sealing pressure between the pump unit and coupling unit, where the pressure cannot be overcome but is instead magnified by forces of reaction arising during pumpmg.
  • the invention thus relates to a pump unit immersible in a liquid and consisting of a liquidtight-enclosed motor and a pump with connection leading laterally out of the pump housing, the pump unit having a guide which, on lowering and raising of the pump unit, guides the pump connection to and from the vicinity of a coupling unit, the pump unit having a suspension device preferentially so placed that the central axis of the pump unit runs slightly obliquely downwards when the pump unit is freely suspended therein.
  • the invention is essentially characterized in that a support for the pump unit in its lowered position is arranged at or close to the coupling unit, in addition to which, in the extension of the coupling unit beyond the support, there is arranged at least one possibly laterally displaced stop with an inclined plane facing the coupling unit, the point of contact between the pump unit and the inclined plane being arranged to lie below the force of reaction at the pump connection and coupling unit resulting from the pump pressure and the area.
  • connection of the pump housing and/or the coupling unit may suitably have special bearing and sealing surfaces.
  • these bearing and sealing surfaces may be of essentially spherical form, whereby they become self-centring and allow tolerances in the relations between the positions 6' the coupling unit and the stop.
  • the suspension device should preferentially be attached to the upper side of the enclosed motor on the central axis of the pump unit or on the side thereof furthest from the connection.
  • the pump unit bears against the inclined plane via at least one pin, stud, roller or the like. This pin, stud, roller or the like may be arranged so as, on raising and lowering of the pump unit, to engage with the guiding device for guiding of the pump unit to and from the connection.
  • coupling unit, support, stop and inclined plane are combined in one unit which, for example, can be placed on the bottom of a basin, cesspool or the like.
  • FIG. 1 shows the invention in schematic form, viewed from the side and partially in cross-section, the pump unit being shown with continuous lines in raised position and with broken lines in lowered position.
  • FIG. 2 shows a partial cross-sectional side view of a modification of the present invention.
  • the pump unit is in the conventional manner immersibly made up of a liquidtight-enclosed electric motor and a pump, preferentially a centrifugal pump. Laterally there projects from the pump housing a stub 3 with a connection 4, the end surfaces of which run essentially vertically. Pump and motor are coaxially arranged and, on the upper side of the motor on the common central axis 1, there is a suspension device in the form of an eyelet 2. The eyelet 2 need not lie on the central axis I even if the subsequent description assumes this position.
  • the point of gravity of the pump housing here lies, inter alia because of the connecting stub 3 projecting laterally from the pump housing, at the side of the central axis 1, to the left of it in the figure, so that the point of gravity Tp of the entire pump unit will lie outside the central axis 1. Consequently, during suspension of the pump unit, i.e. when its point of gravity Tp is below the suspension eyelet 2, the central axis 1 will run slightly obliquely downwards. Owing to the eccentric position of the point of gravity Tp the pump unit, and thus also the connection 4 of the pump housing, hangs slightly obliquely, as shown by continuous lines in the figure. Should the point of gravity Tp coincide with the central axis 1 of the pump unit.
  • the suspension device can be placed, for example, further to the right in the figure so that, when suspended, the pump unit hangs slightly obliquely, with the side facing the coupling unit 5 slightly lower.
  • the pump unit is intended to be coupled to the coupling unit 5, to the flange 6 of which the pumping pipe is intended to be connected.
  • the coupling unit 5 has an essentially vertical connecting body having a beating and sealing surface 7, which fits the corresponding bearing and sealing surface 8 of the connection 4 of the pump housing.
  • these bearing and sealing surfaces 7, 8 are spherical, so that the pump housing can be rotated around the midpoint of the sphere without the seal being affected thereby, and so that the connection 4 of the pump housing becomes self-centring in the coupling unit 5.
  • the pump unit When the pump unit, slightly obliquely suspended in the eyelet 2, is lowered, being guided in the known manner with some clearance on one or more essentially vertical U-shaped guides 10, the unit will finally assume a position with the connection 4 of the pump housing roughly opposite the coupling unit 5.
  • a support 9 prevents the connection 4 of the pump housing. from being lowered past the coupling unit 5 and furthermore, according to the invention, has the following function.
  • connection 4 of the pump housing comes into contact with the support 9, the pump unit still hangs obliquely.
  • the lower part of the connection 4 of the pump housing is then at a slightly greater distance from the coupling unit 5 than its upper part.
  • the pump unit, at the connection 4 of the pump housing will be carried by the support 9, whereas it is not supported at the opposite side of the pump housing, i.e. on its right side in the drawing, as a result of which the pump unit is rotated in the figure clockwise around a horizontal axis and the bearing and sealing surface 8 of the pump housing thus approaches the bearing and sealing surface 7 of the coupling unit 5.
  • a pin, stud, roller 11 or the like comes up against a stop 12 connected to the coupling unit 5 through a base plate 15. This takes place on an inclined plane 13 of the stop 12 facing the coupling unit 5.
  • the point of contact 14 between the stud or the like 11 and the inclined plane 13 here lies the distance below the now preferentially horizontal midplane of the pump housing and connecting stud 3, and therefore below the force of reaction R resulting from the pump pressure, whereby, through the resulting wedge effect, the bearing and sealing surfaces 7 and 8 are pressed together.
  • the placing of the point of contact 14 according to the invention viewed in the direction of the force of reaction, below the point of engagement of the force of reaction, has the following advantageous effect.
  • the downward directed suction aperture also contributes to an increase of the sealing force during operation of the pump.
  • the stop 12 with the inclined plane 13, the support 9 and the coupling unit 5 with coupling flange 6 are, in the embodiment described, connected together by means of a base plate 15, which can suitably be placed on the bottom of a basin, cesspool or the like, and from which the guides 10 may also proceed.
  • the invention thus provides an arrangement which is self-centring and self-coupling, provides an increasing sealing pressure with rising pump pressure and is usable for very large and heavy pump units.
  • FIG. 2 a variation of the pump mounting flange is provided.
  • the stop 11 is still located below the central thrust R so that a clockwise torque is produced, however, the bearing and sealing surface which is pressed together, will be at a point 18 adjacent support 9'.
  • a pump unit immersible in a liquid and consisting of a liquidtight-enclosed motor and pump for pumping liquid into an output conduit comprising:
  • connection member extending laterally out of the pump housing and terminating in a flange with a lower support portion
  • connection member flange and coupling member in direct relation to the torque force.
  • a pump unit as in claim 1 further including a suspension device adapted to connect the housing to a cable or the like, the suspension device positioned on the housing so that the connection member is inclined downward while suspended.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Electrolytic Production Of Metals (AREA)
US67329A 1969-08-29 1970-08-27 Self-coupling pump unit Expired - Lifetime US3659964A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE12019/69A SE331636B (cs) 1969-08-29 1969-08-29

Publications (1)

Publication Number Publication Date
US3659964A true US3659964A (en) 1972-05-02

Family

ID=20295010

Family Applications (1)

Application Number Title Priority Date Filing Date
US67329A Expired - Lifetime US3659964A (en) 1969-08-29 1970-08-27 Self-coupling pump unit

Country Status (9)

Country Link
US (1) US3659964A (cs)
AT (1) AT301353B (cs)
CH (1) CH515421A (cs)
FI (1) FI51631B (cs)
FR (1) FR2059372A5 (cs)
GB (1) GB1318443A (cs)
NL (1) NL148984B (cs)
NO (1) NO126586B (cs)
SE (1) SE331636B (cs)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3743447A (en) * 1971-06-24 1973-07-03 Baltimore Aircoil Co Inc Self coupling submersible pump
US3771914A (en) * 1972-05-08 1973-11-13 C Crespo Connecting flange arrangement of submersible pump for fixed discharge outlet
US3810718A (en) * 1970-11-30 1974-05-14 A Blum Submersible pump
JPS5060603U (cs) * 1973-09-29 1975-06-04
JPS5060602U (cs) * 1973-09-29 1975-06-04
JPS5060601U (cs) * 1973-09-29 1975-06-04
JPS50142504U (cs) * 1974-05-13 1975-11-25
JPS5315502U (cs) * 1976-07-21 1978-02-09
JPS5322302U (cs) * 1976-08-04 1978-02-24
US4308000A (en) * 1980-02-21 1981-12-29 Edison International, Inc. Discharge outlet coupling and guiderail assembly for submersible pumps
US5287612A (en) * 1992-02-27 1994-02-22 Goulds Pumps, Incorporated Apparatus for removal of a bearing frame assembly
US20140010683A1 (en) * 2011-03-31 2014-01-09 Ningbo Jushen Pumps Industry Co., Ltd. Large-scale submersible sewage pump

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3234885A (en) * 1963-02-20 1966-02-15 Flygts Pumpar Ab Pump device
US3427982A (en) * 1967-09-25 1969-02-18 Flygt Corp Submersible pumps

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3234885A (en) * 1963-02-20 1966-02-15 Flygts Pumpar Ab Pump device
US3427982A (en) * 1967-09-25 1969-02-18 Flygt Corp Submersible pumps

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3810718A (en) * 1970-11-30 1974-05-14 A Blum Submersible pump
US3743447A (en) * 1971-06-24 1973-07-03 Baltimore Aircoil Co Inc Self coupling submersible pump
US3771914A (en) * 1972-05-08 1973-11-13 C Crespo Connecting flange arrangement of submersible pump for fixed discharge outlet
JPS5347201Y2 (cs) * 1973-09-29 1978-11-11
JPS5060603U (cs) * 1973-09-29 1975-06-04
JPS5060602U (cs) * 1973-09-29 1975-06-04
JPS5060601U (cs) * 1973-09-29 1975-06-04
JPS5347203Y2 (cs) * 1973-09-29 1978-11-11
JPS5347202Y2 (cs) * 1973-09-29 1978-11-11
JPS5615440Y2 (cs) * 1974-05-13 1981-04-10
JPS50142504U (cs) * 1974-05-13 1975-11-25
JPS5315502U (cs) * 1976-07-21 1978-02-09
JPS5755998Y2 (cs) * 1976-07-21 1982-12-02
JPS5322302U (cs) * 1976-08-04 1978-02-24
JPS5851439Y2 (ja) * 1976-08-04 1983-11-22 株式会社鶴見製作所 水中ポンプの槽内装脱構造
US4308000A (en) * 1980-02-21 1981-12-29 Edison International, Inc. Discharge outlet coupling and guiderail assembly for submersible pumps
US5287612A (en) * 1992-02-27 1994-02-22 Goulds Pumps, Incorporated Apparatus for removal of a bearing frame assembly
US20140010683A1 (en) * 2011-03-31 2014-01-09 Ningbo Jushen Pumps Industry Co., Ltd. Large-scale submersible sewage pump
US9255577B2 (en) * 2011-03-31 2016-02-09 Ningbo Jushen Pumps Industry Co., Ltd. Large-scale submersible sewage pump

Also Published As

Publication number Publication date
DE2041984A1 (de) 1971-03-25
FR2059372A5 (cs) 1971-05-28
NL7012731A (cs) 1971-03-02
DE2041984B2 (de) 1975-08-28
FI51631B (cs) 1976-11-01
AT301353B (de) 1972-09-11
NL148984B (nl) 1976-03-15
SE331636B (cs) 1971-01-04
GB1318443A (en) 1973-05-31
NO126586B (cs) 1973-02-26
CH515421A (de) 1971-11-15

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