EP0797006A2 - Raccord de pompe - Google Patents

Raccord de pompe Download PDF

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Publication number
EP0797006A2
EP0797006A2 EP97103310A EP97103310A EP0797006A2 EP 0797006 A2 EP0797006 A2 EP 0797006A2 EP 97103310 A EP97103310 A EP 97103310A EP 97103310 A EP97103310 A EP 97103310A EP 0797006 A2 EP0797006 A2 EP 0797006A2
Authority
EP
European Patent Office
Prior art keywords
foot piece
pump
piece
valve
ball
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.)
Withdrawn
Application number
EP97103310A
Other languages
German (de)
English (en)
Other versions
EP0797006A3 (fr
Inventor
Rolf Trimborn
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.)
ABS Pumps Ltd
Original Assignee
ABS Pumps Ltd
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 ABS Pumps Ltd filed Critical ABS Pumps Ltd
Publication of EP0797006A2 publication Critical patent/EP0797006A2/fr
Publication of EP0797006A3 publication Critical patent/EP0797006A3/fr
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • F04D15/0072—Installation or systems with two or more pumps, wherein the flow path through the stages can be changed, e.g. series-parallel
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/406—Casings; Connections of working fluid especially adapted for liquid pumps

Definitions

  • the invention relates to a foot piece for a riser.
  • waste water shafts which are designed, for example, as concrete shafts
  • dirty water collecting from these waste water is usually pumped into these shafts by means of pumps into the sewerage system, which generally runs at a higher level from the waste water shaft.
  • sewerage system which generally runs at a higher level from the waste water shaft.
  • the shafts usually consist of a roughly cylindrical concrete base element with a dirty water inlet and a wall duct for an installed pipe system, which leads, for example, to the nearby sewage system.
  • the base body is provided with a manhole neck which tapers towards the surface of the earth, with an installation and inspection opening provided with a cover, or with an end plate with one or more installation and inspection openings.
  • One or more risers extend in the longitudinal axis of the shaft, each of which are provided with gate valves and check valves and open into a common pressure pipe at their upper end.
  • risers are supported on the shaft floor by separately arranged foot pieces attached to the shaft floor.
  • the pump shafts are equipped with one or two pumps.
  • at least two submersible pumps are provided, each submersible pump delivering to a separately arranged riser pipe, each provided with fittings.
  • risers are brought together in a union located above the fittings.
  • Each riser must be equipped with a non-return valve or a check valve, which is absolutely necessary to prevent backflow from the pressure pipe when the pump is at a standstill or to prevent backflow through the other riser when only one pump is operating.
  • the object of the invention is therefore to reduce the outlay on equipment in a pumping station with two or more pumps and to minimize the hydraulic losses in such a pumping station.
  • a foot piece for a riser in particular as a connecting element between at least one submersible pump to be arranged in a sewage shaft and the riser to be acted on by the pump, which has at least two pump connections and at least one integrated check valve.
  • the arrangement of at least two pump connections on a foot piece means that a second or additional riser pipe in the sewage shaft can be dispensed with entirely. This also advantageously reduces the outlay on fittings. All that is required is a slide in the riser. All that is required is a standardized shaft opening for the installation of the pipes, fittings and pumps.
  • the pump connections can open into the foot piece in such a way that flow-efficient delivery is also made possible by two pumps which deliver at the same time.
  • the diameter of the prefabricated concrete shaft can be chosen to be correspondingly small, so that the construction costs for the pumping station are overall significantly lower.
  • the pump connections preferably each open into a connecting piece of the foot piece, the connecting pieces being arranged at an angle of 180 ° or less to one another.
  • the check valves integrated in the foot piece are designed as ball valves.
  • Such valves have relatively small dimensions.
  • the pockets or receptacles for the balls serving as valve bodies in the open position of the valves can advantageously be formed in one piece with the foot piece.
  • the pump connections are expediently designed as coupling pieces screwed onto the connecting pieces.
  • the coupling pieces each form a valve seat for a ball that can be freely moved through both connecting pieces and serves as a common valve body.
  • the ball is moved by the flow into the valve seat of the pump connection of the pump that is not in operation.
  • a check valve is required in the riser pipe or in the outlet connection of the foot piece in order to prevent the liquid from flowing back from the further pressure pipe.
  • two guide rails for the ball are preferably provided in the inner wall of the connecting piece.
  • the connecting pieces then expediently form a U-shaped curved channel which serves as a guide for the ball and which opens approximately in the area of its maximum curvature in a pressure port or outlet port.
  • a pocket-shaped trough for receiving the valve body when both pumps deliver in parallel operation can be provided in the bottom of the foot piece approximately in the mouth region of the connecting piece in the pressure port.
  • an elevation protruding into the cross section of the foot piece can be provided in the bottom of the foot piece, from which the ball runs down in the direction of the non-pressurized pump connection, depending on the pressurized pump connection.
  • a check valve consisting of valve seat and valve body, is assigned to each pump connection.
  • a valve cup for receiving the valve body or the ball in question is then expediently formed in the wall of the connecting piece when the valve is in the open position.
  • Such a foot piece can be pressurized either with two pumps in parallel or with just one pump.
  • At least one pneumatically or hydraulically actuable locking member can be provided for locking the valve body in the open position.
  • the locking member can lock the valve body in the valve cup, for example when a pump is connected, so that the pump medium can be circulated within the pumping station with only one pump.
  • the coupling pieces are each formed as part of a quick coupling known per se.
  • the connector in question takes a large part of the weight attached to it Submersible pump on.
  • this is expediently provided with support feet on its underside.
  • the foot piece can be made of plastic, for example. Such a foot piece is particularly simple and inexpensive to manufacture and in one piece.
  • sewage shaft 1 designed as a concrete prefabricated shaft, which has an approximately cylindrical concrete base body 2 with a dirty water inlet 3 and a wall duct 4 for a pipe system 5.
  • base body 2 On the base body 2, an end plate 6 with an installation and inspection opening 8 provided with a cover 7 is arranged.
  • a foot piece 10 according to the prior art is fastened on the shaft base 9 by means of a base 11.
  • the foot piece 10 is fastened to a riser 12, which is connected to fittings, not specified.
  • a union designated 13 connects two risers 12 arranged one behind the other in the plane of the drawing above the fittings, only one riser 12 being visible.
  • a guide tube 15 extends between an angle 14 fastened to the end plate 6 and the foot piece 10, along which the submersible motor pump 16 can be moved in the direction of the installation and inspection opening 8 by means of a lifting device (not shown).
  • a lifting device not shown
  • the pump-side half 18a of the quick coupling 18 is provided with a guide claw 19, the arms of which grip around the guide tube 15.
  • the halves 18a and 18b of the quick coupling 18 engage in one another and the sealing surfaces of the coupling halves 18a and 18b lying on top of one another are pressed against one another by the weight of the submersible pump 16.
  • FIGS. 2 and 3 A foot piece according to a first embodiment of the invention is shown in FIGS. 2 and 3.
  • the foot piece 10 essentially consists of the foot piece body 20 with a pressure connection 21 and two connection pieces 22 arranged at an angle to one another.
  • the pressure piece 21 is flanged to the riser 12 on the pressure pipe 21.
  • the pressure connection 21 extends essentially perpendicular to the connection connection 22, the longitudinal axes of which are arranged approximately in one plane and enclose an angle between them of preferably between and 45 ° and 35 °.
  • Coupling pieces serving as pump connections are provided, each of which forms one half 18b of the quick coupling 18.
  • the foot piece 10 is arranged on feet 23 on a base plate 24 screwed to the shaft base 9.
  • the halves 18b of the quick coupling 18 or the coupling pieces 18b are screwed onto the foot piece body 20 and each form a valve seat 25 for the balls 26 designed as a valve body. If the coupling pieces 18b are unscrewed, the balls 26 can be removed and possibly replaced .
  • the balls 26 can be designed as normal balls, the cross-sectional profile of the connecting piece 22 being selected such that the direction of movement of the ball 26 in the valve cup 27 is predetermined when pressure is applied. This requirement can be achieved, for example, by guide rails which are cast in the foot piece housing 20.
  • only one ball 26 is provided as a common valve body for both valve seats 25.
  • the ball 26 in the drawing is pressed from right to left into the valve seat 25 of the left connecting piece 22.
  • an additional ball check valve 28 is arranged on the pressure connection 21.
  • the cross section of the connecting piece 22 is provided with two guide rails 29 for the valve body or for the ball 26, which in the foot piece 10 are cast.
  • the design of the guide rails 29 can be seen from the section shown in FIG. 7.
  • strip-like beads are formed in the tube wall of the connecting piece, which form an abutment for the ball 26. These are guided continuously through both connecting pieces 22 and also prevent the ball 26 from being pressed into the pressure piece 21.
  • the connecting pieces are approximately U-shaped to each other, as can be seen from the plan view in Fig. 5.
  • a pocket-shaped trough (not shown in the drawings) is provided in the bottom of the foot piece body 20 below the pressure port 21, which receives the ball when two pumps simultaneously deliver approximately the same output .
  • This trough also serves to enlarge the passage cross-section in order to keep the flow resistance when two pumps are pumped in parallel as low as possible.
  • a check valve integrated in the connecting piece 22 is designed as a flushing valve.
  • an additional ball check valve 28 is also provided here above the pressure connection 21.
  • the ball 26 shown in the left half of the foot piece 10, which can be locked by means of the pneumatically or hydraulically actuated locking member 30, is designed as a floating ball.
  • the ball shown in the right half of the figure, however, is not buoyant. If there is no flow in the foot piece 10, the floating ball tends to float in the valve cup.
  • the locking member 30 holds the floating ball firmly or this can be moved freely in the connecting piece 22.
  • the pump 16 shown on the right in the drawing conveys when locked Ball 26 the medium, when a second pump is connected and not in operation, through the pump pressure nozzle to its suction nozzle back into the shaft.
  • the guide tubes 15 and the quick couplings 18 are designed in accordance with the components described in FIG. 1 and provided with the same reference numerals.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Sewage (AREA)
EP97103310A 1996-03-19 1997-02-28 Raccord de pompe Withdrawn EP0797006A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19610697 1996-03-19
DE1996110697 DE19610697A1 (de) 1996-03-19 1996-03-19 Fußstück

Publications (2)

Publication Number Publication Date
EP0797006A2 true EP0797006A2 (fr) 1997-09-24
EP0797006A3 EP0797006A3 (fr) 1999-01-13

Family

ID=7788697

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97103310A Withdrawn EP0797006A3 (fr) 1996-03-19 1997-02-28 Raccord de pompe

Country Status (2)

Country Link
EP (1) EP0797006A3 (fr)
DE (1) DE19610697A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002031391A1 (fr) 2000-10-10 2002-04-18 Miroslaw Szuster Clapet anti-retour a corps en forme de bille
EP2224069A1 (fr) * 2009-02-27 2010-09-01 KSB Aktiengesellschaft Système de montage transportant du fluide

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10233281A1 (de) * 2002-07-23 2004-02-05 Ksb Aktiengesellschaft Einrichtung zur Erhaltung der Saugfähigkeit einer Tauchmotorpumpe

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3018925A (en) * 1955-10-07 1962-01-30 Flygts Pumpar Ab Dispensing pump and coupling
SE422484B (sv) * 1977-09-15 1982-03-08 Jula Boats Sweden Ab Pumpstation
US4289456A (en) * 1978-05-24 1981-09-15 Masamitsu Ishihara Underwater pump
DE3322259C2 (de) * 1983-06-21 1986-09-25 Albert 5204 Lohmar Blum Abwasserhebeanlage
JPS61500323A (ja) * 1983-10-21 1986-02-27 ユ−ラ・ボ−ツ・スウエ−デン・ア−・ベ− ポンプステ−シヨン
US4614480A (en) * 1984-02-06 1986-09-30 Hardison John C Liquid pumping system
DE4415233C1 (de) * 1994-04-30 1995-12-14 Abs Pumps Ltd Spülventil

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002031391A1 (fr) 2000-10-10 2002-04-18 Miroslaw Szuster Clapet anti-retour a corps en forme de bille
EP2224069A1 (fr) * 2009-02-27 2010-09-01 KSB Aktiengesellschaft Système de montage transportant du fluide

Also Published As

Publication number Publication date
EP0797006A3 (fr) 1999-01-13
DE19610697A1 (de) 1997-09-25

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