EP0718530B1 - Unité de pompage - Google Patents

Unité de pompage Download PDF

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Publication number
EP0718530B1
EP0718530B1 EP95120173A EP95120173A EP0718530B1 EP 0718530 B1 EP0718530 B1 EP 0718530B1 EP 95120173 A EP95120173 A EP 95120173A EP 95120173 A EP95120173 A EP 95120173A EP 0718530 B1 EP0718530 B1 EP 0718530B1
Authority
EP
European Patent Office
Prior art keywords
propeller
pump
shaft
housing
ring seal
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
EP95120173A
Other languages
German (de)
English (en)
Other versions
EP0718530A1 (fr
Inventor
Michael Kowalik
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.)
Friatec-Rheinhuette & Co GmbH
Original Assignee
Friatec-Rheinhuette & Co GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Friatec-Rheinhuette & Co GmbH filed Critical Friatec-Rheinhuette & Co GmbH
Publication of EP0718530A1 publication Critical patent/EP0718530A1/fr
Application granted granted Critical
Publication of EP0718530B1 publication Critical patent/EP0718530B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04D3/00—Axial-flow pumps
    • F04D3/005—Axial-flow pumps with a conventional single stage rotor
    • 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
    • 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
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/12—Shaft sealings using sealing-rings
    • F04D29/126—Shaft sealings using sealing-rings especially 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
    • F04D29/605—Mounting; Assembling; Disassembling specially adapted for liquid pumps

Definitions

  • the invention relates to a pump unit, in particular with a propeller pump, comprising a delivery pipe with a Pump propeller receiving suction nozzle and one behind it outgoing pressure connection as well as the propeller shaft their bearing supports, the Delivery pipe between the two nozzles on the pump shaft has concentrically surrounding seal housing, the one Mechanical seal in cartridge design for sealing the Record shaft passage, as well as with one on one Motor console arranged motor and a belt drive for Propeller pump drive.
  • Pump units of the type mentioned are known. You are suitable is particularly committed to promoting large production volumes comparatively low delivery heights. They are suitable preferred for drainage, drainage at construction pits and generally for lowering water, for example in civil engineering, Open-cast mining areas or as circulation pumps in evaporation or Crystallization plants.
  • a propeller pump is outside of it Conveyor tube a bearing bracket in the manner of a lantern with Spaced roller bearings for the propeller shaft.
  • a mechanical seal is located between these and the delivery pipe, which the pressure chamber of the pump opposite the bearing bracket and its rolling bearings seals.
  • the sealing effect of this mechanical seal is known in the Way caused by slip rings, both against the medium and also seal against the atmosphere, leaving the space between the sealing rings of a barrier medium is applied, which lubricates and cools the Slip rings takes over. Nevertheless, this mechanical seal is a Wear part, which according to its stress in certain Intervals must be expanded and replaced with a new part.
  • FR-A-1.329.338 is a rotating union of a stationary Liquid line described in a rotating shaft.
  • the Rotary union is sealed by axial mechanical seals, which are in a cylindrical mechanical seal housing are arranged rotatably.
  • the Mechanical seal housing sits in a bore of the shaft and is from Clamping screws over a clamping ring and one in an external groove of the Mechanical seal seated support ring against a shoulder of the Drilled hole. In this way, the rotating union is simple to be replaced if the mechanical seals are worn.
  • the invention has for its object the type of a pump unit to improve with a propeller pump while avoiding the aforementioned difficulties when changing a mechanical seal this especially replace without dismantling the pump shaft and its drive to, by removing the mechanical seal housing in Direction of the propeller to be removed.
  • the design of the invention enables Removal of the complete mechanical seal including your Housing and the shaft sleeve after removing the propeller in Direction to the free end of the pump shaft.
  • the clamping screws loosened and at least partially removed, so that the support ring from the circumferential groove can be pulled out, after which at least part of the Screwed in again and as a removal aid in the Senses are used that by unscrewing the Clamping rings with the help of the clamping screw nuts
  • Mechanical seal housing together with the shaft sleeve pushed out of the centering collar of the pump housing at the front become.
  • the mechanical seal can be removed from its housing removed and replaced with a new mechanical seal, after which the housing in the opposite direction through the sleeve is pushed through until the circumferential groove with the Centering collar is flush, after which the two-part or multi-part Support ring inserted into the circumferential groove and then the Clamping screws in the flange formed on the sleeve screwed in, then from above the clamping ring on the Mechanical seal housing placed on and after screwing on the nuts on the tensioning screws and tightened them the housing is clamped between the support ring and the clamping ring.
  • the order the shoulders on the shaft sleeve, on which support rings for supporting Gaskets abut, allows easy removal of the removed Mechanical seals.
  • Figure 1 shows a pump unit with a propeller pump.
  • This includes a Delivery pipe (1) with a suction nozzle that receives the pump propeller (10) (2) and a outgoing pressure connection (3) and a die Propeller shaft (11) with its bearings (12, 13) receiving bearing supports (14).
  • the delivery pipe (1) has a between the two connecting pieces (2, 3) Propeller shaft (11) concentrically surrounding sleeve (15) in one Centering collar (16) together with a mechanical seal housing (21, 21 ') a shaft sleeve (22) arranged on the shaft (11). This is sealed against the shaft (11) by means of a sealing element (29, Fig. 2).
  • the advantage is the installation and removal of the mechanical seal housing (21, 21 ') facilitated by the fact that the installation space (40) surrounding the housing for example by a removable drip pan (41) for holding and Removal of any leaks that may occur can be.
  • a pump housing (46) receiving the delivery pipe (1) is the bearing bracket (14) and next to or below on one Support unit (47) a motor console (43) with the motor (44) and a belt drive (45) for driving the propeller pump arranged.
  • FIG. 2 shows in an enlarged partial representation, points the mechanical seal housing (21, 21 ') in the front or lower region (21) on a circumferential groove (23) into which a two-part or multi-part support ring (24) can be inserted with the the housing (21, 21 ') is supported axially, whereas it is from the other side by means of a clamping ring (25) for example four clamping screws (26) against the support ring (24) can be braced.
  • the mechanical seal can be taken so that the Mechanical seal (20) in two parts in the axial direction formed and each part (21, 21 ') with a connection hole (18, 19) is provided for rinsing liquid.
  • the Tensioning screws (26) in one on the inside of the sleeve (15) formed flange (17), spaced apart in the circumferential direction, screwable and on the outer circumference of the parts of the support ring (24) are arranged adjacent. In this way they serve Clamping screws (26) at the same time for a secure hold in the Circumferential groove (23) used support ring (24) so that it No more seat and hold in the groove (23) Securing elements are more required.
  • the mechanical seal (20) is in section shown. It comprises the housing (21), which on a End in the centering collar (16) of the sleeve (15) fitted and between the support ring (24) and the clamping ring (25) through the Screws (26) is clamped. Furthermore, the Mechanical seal (20) rotating with the shaft (11) Shaft sleeve (22) opposite the shaft (11) with the Sealing ring (29) is sealed at a snug fit. Between there are two pairs of slide rings in a two-stage arrangement (50, 51) and (52, 53), each as a pair of sealing rings interact with each other.
  • the sealing rings (50) and (52) each on support rings (54, 55), which in turn on Shoulders (60, 61) of the shaft sleeve (22) are held axially.
  • the sealing rings (50, 52) rotate with the shaft (11), while the sealing rings (51, 52) in the housing (21) are non-rotatable are held.
  • the mechanical seal (20) thus consists of functionally well-proven individual parts and is as a result their two-tier arrangement compared to both Pumped medium from one side, as well as opposite The atmosphere from the other side is reliably tight.
  • the replacement of the Wear part existing mechanical seal (20) essential facilitates and simplifies, reducing downtime and costs avoided or reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Mechanical Sealing (AREA)
  • Eye Examination Apparatus (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Claims (4)

  1. Unité de pompage, en particulier avec une pompe-hélice, comprenant un tuyau de refoulement (1) avec un ajutage d'aspiration recevant l'hélice de la pompe (10) et un ajutage sous pression partant de l'arrière ainsi qu'un support de paliers recevant l'arbre de l'hélice (11) avec ses paliers (12, 13), dans laquelle le tuyau de refoulement (1) présente entre les deux ajutages (2, 3) un carter de joint d'étanchéité à anneaux glissants (21, 21') qui entoure de façon concentrique l'arbre de la pompe (11), carter qui reçoit un joint d'étanchéité à anneaux glissants selon une réalisation à cartouche pour assurer l'étanchéité du passage de l'arbre, ainsi qu'avec un moteur (44) disposé sur une console (43) et un jeu de courroies d'entraínement (45) servant à entraíner la pompe-hélice,
    caractérisée en ce que
    le carter de joint d'étanchéité à anneaux glissants (21, 21') du joint d'étanchéité à anneaux glissants (20) présente dans la zone proche de l'hélice une rainure périphérique (23), dans laquelle on peut insérer une bague d'appui (24) en une ou plusieurs parties qui sert à la mise en appui axial du carter de joint d'étanchéité à anneaux glissants (21, 21'), que l'on peut serrer à partir du côté qui est loin de l'hélice au moyen de boulons de serrage (26) par l'intermédiaire d'une bague de serrage (25) contre la bague d'appui (24), et
    on constitue un manchon d'arbre (22), qui est disposé sur l'arbre (11) de l'hélice , à partir de son extrémité située du côté de l'hélice de façon croissante avec des épaulements (60, 61), sur lesquels reposent des bagues d'appui (54, 55) pour la mise en appui des anneaux d'étanchéité (50, 52).
  2. Unité de pompage selon la revendication 1,
    caractérisée en ce que
    le manchon d'arbre (22) présente à son extrémité éloignée de l'hélice une rainure périphérique (36) pour un élément de blocage (37), par exemple un jonc.
  3. Unité de pompage selon la revendication 1 ou 2,
    caractérisée en ce que
    le carter de joint d'étanchéité à anneaux glissants (21, 21') du joint d'étanchéité à anneaux glissants (20) est constitué dans le sens axial en deux parties et
    chaque partie (21, 21') est pourvue d'un alésage de raccordement (18, 19) pour du liquide de rinçage.
  4. Unité de pompage selon l'une des revendications 1 à 3,
    caractérisée en ce que
    les boulons de serrage (26) peuvent être vissés dans une bride (17) sur le côté éloigné de l'hélice d'un manchon (15) qui entoure l'arbre de l'hélice (11) en étant répartis sur son pourtour et en reposant sur le pourtour extérieur des parties de la bague d'appui (24).
EP95120173A 1994-12-23 1995-12-20 Unité de pompage Expired - Lifetime EP0718530B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9420534U DE9420534U1 (de) 1994-12-23 1994-12-23 Pumpenaggregat
DE9420534U 1994-12-23

Publications (2)

Publication Number Publication Date
EP0718530A1 EP0718530A1 (fr) 1996-06-26
EP0718530B1 true EP0718530B1 (fr) 2000-03-22

Family

ID=6917781

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95120173A Expired - Lifetime EP0718530B1 (fr) 1994-12-23 1995-12-20 Unité de pompage

Country Status (3)

Country Link
EP (1) EP0718530B1 (fr)
AT (1) ATE191072T1 (fr)
DE (2) DE9420534U1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITVI20090163A1 (it) * 2009-07-03 2011-01-04 Varisco S P A Pompa centrifuga autoportante ed assieme motopompa incorporante tale pompa
CN102116303B (zh) * 2011-04-06 2013-07-31 无锡锡山特种风机有限公司 插入式循环风机
DE102018112896A1 (de) 2018-05-30 2019-12-05 HWC GmbH & Co. KG Kreiselpumpe

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1329338A (fr) * 1962-07-20 1963-06-07 Joint tournant
FR2525699A1 (fr) * 1982-04-26 1983-10-28 Largeaud Paul Machine rotative - telle une pompe centrifuge - avec organe d'etancheite facilement demontable
WO1986004655A1 (fr) * 1985-02-01 1986-08-14 Pumps W.A. Ltd. Joint d'etancheite mecanique
US4625977A (en) * 1985-04-30 1986-12-02 A. W. Chesterton Company Convertible, stand-by rotary seal assembly

Also Published As

Publication number Publication date
EP0718530A1 (fr) 1996-06-26
ATE191072T1 (de) 2000-04-15
DE9420534U1 (de) 1995-02-16
DE59508051D1 (de) 2000-04-27

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