EP0447766B1 - Spinnpumpe - Google Patents

Spinnpumpe Download PDF

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Publication number
EP0447766B1
EP0447766B1 EP91101242A EP91101242A EP0447766B1 EP 0447766 B1 EP0447766 B1 EP 0447766B1 EP 91101242 A EP91101242 A EP 91101242A EP 91101242 A EP91101242 A EP 91101242A EP 0447766 B1 EP0447766 B1 EP 0447766B1
Authority
EP
European Patent Office
Prior art keywords
spinning pump
spinning
base plate
der
plane
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
EP91101242A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0447766A3 (en
EP0447766A2 (de
Inventor
Rüdiger Dipl.-Ing. Dollhopf
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.)
Cerdia Produktions GmbH
Original Assignee
Rhone Poulenc Rhodia AG
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 Rhone Poulenc Rhodia AG filed Critical Rhone Poulenc Rhodia AG
Publication of EP0447766A2 publication Critical patent/EP0447766A2/de
Publication of EP0447766A3 publication Critical patent/EP0447766A3/de
Application granted granted Critical
Publication of EP0447766B1 publication Critical patent/EP0447766B1/de
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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/086—Carter

Definitions

  • Known spinning pumps of this type are used in the chemical fiber industry in the manufacture of threads from solutions or melts of a wide variety of substances, such as a solution of cellulose acetate in acetone or melts of polyester, e.g. Polyethylene terephthalate, or of polyamide, e.g. Polyamide-66, used.
  • this solution (the spinning liquid) is passed under a pressure of, for example, 20 bar through an - inner - inlet channel of the spinning pump block and the corresponding, flush - inner - channel of the Spinning pump guided into the gear plate or plates of the spinning pump, passed there between the teeth of meshing gears and then under a pressure of, for example, 85 bar through - inner - outlet channels of the spinning pump, which are aligned with corresponding - inner - channels of the spinning pump block, again Spinning pump block fed.
  • melt spinning is carried out in the same way, but in this case considerably higher pressures have to be used to convey the spinning liquid, ie the melt, since such melts have a relatively high viscosity.
  • the pressure of the melt can be, for example, 40 bar in the inlet channel and, for example, 300 bar in the outlet channels.
  • An improvement in the aforementioned sealing cannot be achieved either by increasing the number of fastening screws or increasing the surface pressure (by reducing the contact area between the base plate of the spinning pump and the spinning pump block) or by using flat seals between the base plate of the spinning pump and spinning pump block.
  • the invention is therefore based on the object to provide a spinning pump of the type mentioned which, when used, enables such a good seal on the surface on which the base plate of the spinning pump and the connecting surface of the spinning pump block touch that even when using the highest pressures the spinning liquid cannot escape this liquid from the inlet and / or outlet channels in the area of that surface.
  • a spinning pump of the type mentioned which, when used, enables such a good seal on the surface on which the base plate of the spinning pump and the connecting surface of the spinning pump block touch that even when using the highest pressures the spinning liquid cannot escape this liquid from the inlet and / or outlet channels in the area of that surface.
  • the invention is based on the following principle: The power flow generated by the mounting screws is redirected with / in the adapter part so that it comes into effect in the - smaller - area of the spinning pump in which the spinning liquid flows (mostly mainly in the middle), i.e. where the Hydraulic forces acting on the pressure of the spin fluid and could cause a bulging - as described above.
  • cap screws can be used as fastening screws.
  • These through bores preferably allow a - slight - play between the bore walls and the fastening screws.
  • the fastening screws are screwed into internally threaded holes in the spinning pump block.
  • a hardened steel is preferably used as the material for the adapter part, the various plates of the spinning pump and the spinning pump block.
  • Fig. 1 shows schematically a spinning pump according to the invention.
  • the base plate 4, the gear plate 5 and the cover plate 6 of the spinning pump 1 consist of hardened steel and are connected to one another by means of screws (not shown in FIG. 1).
  • the spinning pump 1 also has an - inner - inlet channel 8 and four - inner - outlet channels 9 for the spinning liquid, which lead through the base plate 4 into the gear plate 5.
  • the inlet channel 8 leading through the base plate 4 into the gear plate 5 is aligned with the inlet channel 8 of the spinning pump block 2, and the outlet channels 9 leading through the base plate 4 into the gear plate 5 are respectively aligned with the corresponding outlet channels 9 of the spinning pump block 2.
  • the spinning pump block 2 is also made of hardened steel.
  • the spinning pump 1 is of round design, that is to say that it is essentially cylindrical.
  • the spinning pump 1 has a diameter of 92 mm.
  • the through holes 12 leave a play of 0.5 mm between the walls of the through holes 12 and the fastening screws 3.
  • the fastening screws 3 are screwed into internally threaded bores 13 in the spinning pump block 2.
  • the depth of the groove 16 is 19 mm; the width of the groove 16 is 3 mm.
  • the bore 14 in the adapter part 15 (for the drive shaft 7 and the coupling 17) is arranged round and centrally through the adapter part 15 and has a diameter of 30.6 mm.
  • the adapter part 15 has a height of 27 mm, and the groove 16 is at a distance of 10 mm from the screwing surface of the adapter part 15 to the cover plate 6 of the spinning pump 1.
  • the inside diameter of the groove 16 is 54 mm.
  • the invention is of course not limited to round spinning pumps, but can be applied to spinning pumps of any design.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Reciprocating Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • External Artificial Organs (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
EP91101242A 1990-03-13 1991-01-31 Spinnpumpe Expired - Lifetime EP0447766B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4007858 1990-03-13
DE4007858A DE4007858C1 (en) 1990-03-13 1990-03-13 Rotary liquid pump - has pump coupled to block by symmetrically placed fastening screws

Publications (3)

Publication Number Publication Date
EP0447766A2 EP0447766A2 (de) 1991-09-25
EP0447766A3 EP0447766A3 (en) 1992-03-04
EP0447766B1 true EP0447766B1 (de) 1993-12-15

Family

ID=6402031

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91101242A Expired - Lifetime EP0447766B1 (de) 1990-03-13 1991-01-31 Spinnpumpe

Country Status (10)

Country Link
US (1) US5118267A (da)
EP (1) EP0447766B1 (da)
JP (1) JP2876350B2 (da)
CN (1) CN1019593B (da)
AT (1) ATE98747T1 (da)
BR (1) BR9100920A (da)
DE (2) DE4007858C1 (da)
DK (1) DK0447766T3 (da)
ES (1) ES2047348T3 (da)
RU (1) RU2013661C1 (da)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995022002A1 (de) * 1994-02-14 1995-08-17 Rhone-Poulenc Viscosuisse Sa Spinnpumpe für polyamide
DE10027812A1 (de) * 2000-06-05 2001-12-13 Luk Fahrzeug Hydraulik Pumpe
GB2365927B (en) * 2000-08-15 2002-10-30 Sauer Danfoss Swindon Ltd Axially compact gear pump
US6824733B2 (en) * 2002-06-20 2004-11-30 3M Innovative Properties Company Meltblowing apparatus employing planetary gear metering pump
US8376369B2 (en) 2006-02-10 2013-02-19 Freudenberg-Nok General Partnership Seal with spiral grooves and contamination entrapment dams
US8925927B2 (en) 2006-02-10 2015-01-06 Freudenberg-Nok General Partnership Seal with controllable pump rate
US7494130B2 (en) 2006-02-13 2009-02-24 Freudenberg-Nok General Partnership Bi-directional pattern for dynamic seals
US7775528B2 (en) 2006-02-13 2010-08-17 Freudenberg-Nok General Partnership Bi-directional pattern for dynamic seals
US7891670B2 (en) 2008-02-01 2011-02-22 Freudenberg-Nok General Partnership Multi-directional shaft seal
US8454025B2 (en) 2010-02-24 2013-06-04 Freudenberg-Nok General Partnership Seal with spiral grooves and mid-lip band
EP2558724A2 (en) * 2010-04-12 2013-02-20 FIGURA, Pavol Gear pump with continuous variable output flow rate
CN102817832B (zh) * 2011-06-08 2015-04-08 苏州工业园区华西泵业有限公司 多出口注色混合纺丝计量泵
US8919782B2 (en) 2012-10-19 2014-12-30 Freudenberg-Nok General Partnership Dynamic lay down lip seal with bidirectional pumping feature

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE441214C (de) * 1927-02-25 Eduard Gerberich Zahnradpumpe fuer die Foerderung von Viskose zu den Spinnduesen von Kunstfaserspinnmaschinen
US3123012A (en) * 1964-03-03 Hydraulic gear apparatus
US1968110A (en) * 1932-02-29 1934-07-31 Albert S Walker Internal combustion engine
GB632491A (en) * 1945-04-18 1949-11-28 Sigma Improvements in systems including at least one gear pump
NL159507B (nl) * 1950-07-05 1955-04-15 Decca Ltd Ontvanger voor een radionavigatiestelsel met fasevergelijking.
CH284564A (de) * 1950-08-08 1952-07-31 Inventa Ag Zweistufige Zahnradspinnpumpe.
US2818023A (en) * 1954-06-17 1957-12-31 Nichols Co W H Metering pump
US3627455A (en) * 1970-02-05 1971-12-14 Trw Inc Multicycle self-balancing gear pump
FR2198805B1 (da) * 1972-09-08 1977-09-02 Smiths Industries Ltd
US4077751A (en) * 1975-05-01 1978-03-07 Caterpillar Tractor Co. End housing clamps for rotary mechanisms
US4080121A (en) * 1976-01-19 1978-03-21 Caterpillar Tractor Co. Joint sealing for engine housings
US4534717A (en) * 1981-05-01 1985-08-13 Ford Motor Company Flushable metering pump
US4530526A (en) * 1981-06-08 1985-07-23 Big-Inch Marine Systems, Inc. Swivel coupling element
US4767138A (en) * 1982-04-30 1988-08-30 Fisher Controls International, Inc. Hubless Flange
US4477087A (en) * 1983-07-20 1984-10-16 Sutter Jr Leroy V Seal formed out of a hard metal with a plating of soft metals
DE3538950A1 (de) * 1984-11-23 1986-06-05 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Spinnpumpe, insbesondere zahnradpumpe

Also Published As

Publication number Publication date
EP0447766A3 (en) 1992-03-04
DK0447766T3 (da) 1994-01-24
JP2876350B2 (ja) 1999-03-31
DE4007858C1 (en) 1991-08-14
JPH0610207A (ja) 1994-01-18
RU2013661C1 (ru) 1994-05-30
BR9100920A (pt) 1991-11-05
ES2047348T3 (es) 1994-02-16
ATE98747T1 (de) 1994-01-15
CN1019593B (zh) 1992-12-23
EP0447766A2 (de) 1991-09-25
US5118267A (en) 1992-06-02
DE59100705D1 (de) 1994-01-27
CN1055043A (zh) 1991-10-02

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