US3797962A - Spinning turbine - Google Patents

Spinning turbine Download PDF

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Publication number
US3797962A
US3797962A US00220597A US3797962DA US3797962A US 3797962 A US3797962 A US 3797962A US 00220597 A US00220597 A US 00220597A US 3797962D A US3797962D A US 3797962DA US 3797962 A US3797962 A US 3797962A
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US
United States
Prior art keywords
turbine
housing
bore
back wall
insert
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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
US00220597A
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English (en)
Inventor
F Stahlecker
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.)
Wilhelm Stahlecker GmbH
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Wilhelm Stahlecker GmbH
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Filing date
Publication date
Application filed by Wilhelm Stahlecker GmbH filed Critical Wilhelm Stahlecker GmbH
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Publication of US3797962A publication Critical patent/US3797962A/en
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/04—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by contact of fibres with a running surface
    • D01H4/08—Rotor spinning, i.e. the running surface being provided by a rotor
    • D01H4/10—Rotors

Definitions

  • the 27 shaft of the turbine which is to be rotatably mounted I d 0 care 2 1 outside of the housing, preferably on indirect bearing l meana, 9 9 9.95 h u h htl ,l299 51 h 56 R f C d back wall of the housing or in an annular flange on 1 e erences this back wall so as to form an intermediate annular UNITED STATES PATENTS slot.
  • the present invention relates to a spinning turbine which runs within a housing in which a pressure below atmospheric is maintained and the back wall of which is provided with a bore through which the shaft of the turbine passes which is rotatably mounted independently and outside of the housing, for example, on indirect bearing means.
  • Such a turbine construction has. however, the disadvantage that air may easily pass from the outside through the bore for the turbine shaft in the back wall of the housing into the spinning chamber, especially since because of manufacturing tolerances the bore in this back wall must be considerably larger than the diameter of the turbine shaft or of a hub or collar on this shaft which passes through this bore. An annular slot is thus formed between the wall of the bore and the shaft through which air may pass from the outside into the interior of the housing. If the turbine shaft runs on supporting rollers. it is practically unavoidable that in the course of time the surfaces of these rollers will be worn with the result that their diameter will be reduced and the position of the turbine shaft relative to the axis of the bore in the back wall of the turbine housing will at least be slightly changed.
  • a principal feature of the present invention for attaining this object consists in designing the bore for the turbine shaft so as to form air stagnation or damming chambers and/or to provide such chambers within the area of the housing subsequent to the bore between the back wall of the housing and the adjacent rotating part or parts of the turbine. By providing such damming chambers. it is possible to attain an increased sealing effect without requiring any reduction of the size of the annular slot between the wall of the bore in the back wall of the turbine housing and the turbine shaft.
  • these damming chambers are provided in the form of annular grooves, preferably of a V-shaped cross section, in the rear wall of the spinning turbine which faces and is closely adjacent to the inner side of the back wall of the housing and/or in a hub or collar projecting from the back wall of the turbine.
  • the sealing effect may be further improved by also providing similar annular grooves in the back wall of the housing and/or in the wall of the bore through which the turbine shaft or its hub or collar extends from the inside of the housing. In this manner it is possible to attain a cumulative sealing effect by providing a larger number of such air damming chamber behind each other, as seen in the direction from the outer end of the bore toward the inside of the housing.
  • Another feature of the invention consists in providing the back wall of the housing or a hublike projection thereon with one or more inserts, preferably of plastic which are provided with the bore through which the turbine shaft extends and in combination with the shaft and/or the back wall of the turbine also define the air damming chambers.
  • inserts have the advantage that in the manufacture of the turbine housing its tolerances do not have to be very small and that the insert or inserts themselves may be easily and accurately produced.
  • the bore which is provided in the insert or inserts corresponds to the rotary part extending through this bore. that is. to the turbine shaft or the hub or collar on this shaft or on the back wall of the turbine, and the insert or inserts are preferably made of a material which has good antifriction properties.
  • the diameter of the bore may be made relatively small as compared with the diameter of the rotary part extending through this bore since because of the antifriction properties of the stationary insert or inserts a slight engagement between the rotary part and the wall of the bore in the insert or inserts would be permissible during the running-in period of the turbine.
  • Another feature of the invention consists in adjustably securing the insert to the back wall of the turbine housing so as to permit the bore in the insert to be adjusted so as to extend coaxially to the turbine shaft.
  • This feature also permits the bore to be made of a diameter only slightly larger than that of the rotary part extending through this bore, that is, of the shaft or the hub or collar on the back wall of the turbine, since the bore may be accurately centered relative to the shaft during the assembly of the turbine or even subsequently if a wear of the bearing means of the shaft which are separate and spaced from the housing causes a slight displacement of the shaft.
  • such a centering of the bore relative to the turbine shaft or to the hub or collar on the back wall of the turbine may also be effected by making the insert of a cylinderical outer shape, by inserting it into a large bore in the back wall of the housing so as to permit it to be turned therein, and by providing the bore in the insert eccentrically to its outer surface. The insert may then be adjusted so that its bore extends coaxially to the turbine shaft by turning it within the back wall of the housing.
  • the sealing effect even of a narrow annular slot between the wall of the bore in the insert and the turbine shaft or the hub or collar on the back wall of the turbine may be further increased by providing the wall of the bore in the insert with annular grooves which serve as air damming chambers.
  • These annular grooves may also be of different diameters so as to form a step-shaped series of grooves, and the hub or collar which connects the back wall of the turbine with the shaft and may be integral either with the back wall or the shaft or both of them may be provided with a step-shaped series of cylinderical surfaces of different diameters slightly smaller than those of the surfaces of the annular grooves with which they are operatively associated to define air damming chambers.
  • the air damming chambers may, however, also be formed, for example, by providing annular projections and intermediate recesses of different diameters on the back wall of the turbine and by providing the insert with similar projections which engage into the annular recesses of the back wall of the turbine.
  • they may also be provided on a separate rotary element which may be either secured to the turbine itself within the housing or be mounted on its shaft outside of the housing.
  • Another feature of the invention consists in providing the back wall of the turbine and/or a part of its hub or collar with vanes or the like which during the rotation of the turbine tend to produce an air current from the inside toward the outside of the housing which increases the sealing effect of the annular slot between the turbine shaft or the hub or collar and the wall of the bore in the housing or in the insert and at least prevents the entry of outside air through this slot into the housing or may even produce a suction upon the inside of the housing and the spinning chamber so as to lower the pressure therein to a still greater extent.
  • FIG. 1 shows, partly in cross section, a first embodiment of the invention
  • FIG. 2 shows a similar view of a second embodiment of the invention
  • FIG. 3 shows a similar view of an embodiment of the invention which forms a combination of the embodiments as shown in FIGS. 1 and 2;
  • FIG. 4 shows a similar view of a modification of the embodiment as shown in FIG. 2;
  • FIG. 5 shows a similar view of another embodiment of the invention.
  • FIG. 6 shows a similar view of a further embodiment of the invention.
  • FIG. 7 shows a similar view of a further embodiment of the invention
  • FIG. 8 shows a similar view of a modification of the embodiment as shown in FIG. 7.
  • FIG. 1 illustrates a spinning turbine -l which is freely rotatable within a housing 2 in which a pressure below atmospheric prevails during the spinning operation.
  • the housing 2 is adapted to be tightly closed by a cover, not shown, which may be removed or pivoted to its open position.
  • a cover not shown
  • the wall of housing 2 may then be provided with one or more connections 3 to which a suction line may be connected.
  • the shaft 4 of the spinning turbine 1 extends through the back wall 5 of housing 2 and is indirectly mounted at the outside of this housing in a manner not shown in an air suspension bearing or on two pairs of rollers or the like.
  • the back wall 5 of housing 2 is provided with a tubular hub or flange 6 which has a bore 7 through which the turbine shaft 4 extends.
  • the bore 7 should be made of such a size that an annular slot remains between the turbine shaft 4 and the wall of the bore 7.
  • several air stagnation or damming chambers 8 are provided behind each other subsequent to the annular slot.
  • the lower wall of the turbine l which is located closely adjacent to the inner side of the back wall 5 of housing 2 is for this purpose provided with a plurality of annular grooves 9 of a V-shaped cross section.
  • FIG. 2 illustrates an embodiment of the invention which is functionally similar to the embodiment according to FIG. 1, but in which the air damming chambers 10 are formed within the bore 7 in the flange or hub 6 on the back wall 5 of housing 2.
  • the wall of bore 7 is for this purpose provided with a plurality of annular V-shaped grooves 11 which are associated with corresponding annular grooves 12 which are provided in the peripheral surface of the hub 13 of the spinning turbine l which extends through the bore 7.
  • the opposite V- shaped grooves 11 and 12 in the walls of the bore 7 and the hub 13 then together form air damming chambers of a substantially rectangular cross section.
  • FIG. 3 illustrates another embodiment of the invention in which the rear side of the spinning turbine 1 is provided with annular V-shaped grooves 9 like those shown in FIG. 1.
  • These grooves 9 are laterally offset by the maximum width of a half groove relative to similar annular V-shaped grooves 14 in the inner side of the bottom wall 5 of the housing so that the V-shaped projections on one wall project into the V-shaped grooves in the other wall.
  • a labyrinth gland is thus formed which extends from the inner end of bore 7 toward the inside of the housing 2.
  • the wall of bore 7 is further provided with annular grooves 11 like those shown in FIG. 2 so that additional air damming chambers 10 are formed.
  • the hub of this spinning turbine l is, however, cylindrical and not provided with annular grooves.
  • FIG. 4 illustrates another embodiment of the invention which is functionally similar to the embodiment as shown in FIG. 2.
  • the wall of bore 7 through which the turbine shaft 4 or a shaft part 16 of a larger diameter extends is also in this case provided with annular grooves 11 which form several air damming chambers behind each other.
  • the bore 7 with the annular grooves 11 in its wall is provided in a cylindrical insert 17 which is mounted in the back wall 5 of housing 2 and in the tubular flange 6 thereon. Bore 7 extends eccentrically to the outer peripheral surface of the insert 17. Before the spinning turbine is inserted into the housing 2, the insert 17 is turned so that the axis of bore 7 coincides exactly with the axis of rotation of the shaft and the enlarged part 16 thereof so that a very small annular slot may be attained.
  • the wall of bore 7 may be provided with a continuous thread flute instead of annular grooves 11, so that an outwardly directed air current through this flute is formed during the rotation of the turbine. This may apply likewise to the embodiments as shown in FIGS. 1 to 3.
  • the back wall 5 of housing 2 is likewise provided with a large aperture into which an insert 18 is fitted which preferably consists of plastic and is provided with a bore 19 through which the turbine shaft 4 is passed.
  • This bore 19 in the insert 18 is step-shaped, and from the inside toward the outside of the housing each step has a smaller diameter than the previous step.
  • turbine 1 Underneath its bottom, turbine 1 is provided with a step-shaped hub or collar 20 the individual steps of which are likewise of diminishing diameters.
  • a stepshaped gland is thus formed which is provided with a succession of air damming chambers in the direction of bore 19.
  • the ring of this collar 20 which is immediately adjacent to the bottom of the spinning turbine l and has the largest diameter is provided with vanes 21 or the like which during the rotation of the turbine form air conveying means which produce an air current through the step-shaped annular slot between bore 19 and collar 20 in the direction from the inside to the outside of the housing.
  • the effect of the air damming chambers is increased by the additional air conveying means which may be designed so that either a stagnation of air will occur in the annular slot between the walls of bore 19 and the collar 20 or that additional air will be sucked out of the housing 2 and the degree of the vacuum in the housing will be further increased.
  • FIG. 6 shows an embodiment of the invention in which the back wall 5 of the housing 2 and the flange thereon are provided with two separate inserts 22 and 23. These two inserts are cup-shaped and are spaced from each other by a chamber 24 around the enlarged collar 25 of turbine 1.
  • These inserts 22 and 23 are made of a material with good antifriction properties and are provided with coaxial bores 26 which have a diameter nearly equal to the diameter of collar 25 so that only a very small annular slot will be formed between the collar 25 and the walls of the bores 26 in the two inserts 22 and 23 and any friction which might occur between these surfaces during the running-in period of the turbine will be negligable because of the good antifriction properties of the material of the inserts 22 and 23.
  • collar 25 will be disengaged entirely from the walls of the bores 26 so that no further friction will occur.
  • an insert 27 which preferably consists likewise of plastic is fitted into an aperture in the back walls 5 of the housing and has a bore 29 the diameter of which differs only very slightly from the diameter of the collar 28 on the turbine 1.
  • a lower surface of the insert 27 engages upon the upper surface of the back wall 5 of the housing to which it is adjustably secured by screws. Due to this adjustability, the annular slot between the wall of bore 29 and the collar 28 may be made very small even though the manufacturing tolerances of the different parts as required for a quantity production may be of sufficient sizes.
  • the insert 27 is accurately centered relative to the axis of rotation of the turbine by a special gauge which is preferably supported on the turbine bearings, not shown. This adjustment eliminates the effects of the manufacturing tolerances which otherwise might seriously interfere with the operation of the turbine.
  • FIG. 8 functionally corresponds substantially to the embodiment as shown in FIG. 7.
  • an insert 32 is centered and secured by screws. This centering operation is carried out by means of a special gauge which is supported on the bearing or parts of the bearing means of the turbine shaft 4 which are not shown. Bore 33 therefore only needs to be slightly larger than the diameter of the turbine shaft 4. The resulting annular slot'between the wall of bore 33 and the turbine shaft 4 is therefore so narrow that the entry of outside air into the housing 2 will be substantially prevented.
  • the insert 32 is provided on its inner side with an annular recess 34 into which a cylindrical projection 35 engages which is provided on the rear side of the spinning turbine l. A step-shaped gland is thus formed which additionally interferes with the entry of outside air in the housing 2.
  • a spinning turbine comprising: a rotary turbine element having a back wall and a collar portion, a shaft having said collar portion force-fitted on one end thereof, a stationary housing enclosing said turbine element, means for maintaining said stationary housing at a pressure below atmospheric pressure during the operation of said turbine, said housing including a back wall spaced slightly from said back wall of said turbine element forming a first narrow annular slot, said housing back wall being provided with a bore, said bore being provided in an extension of said housing back wall which substantially corresponds to the length of said collar portion, said shaft and said collar portion being disposed in said bore with said shaft extending to the outside of said housing, said bore having a diameter slightly larger than the diameter of said shaft and said collar portion extending there-through thereby forming a second narrow annular slot between the wall of said bore and the wall of said collar portion, said second narrow annular slot being in communication with said first annular slot, at least one of said walls being provided with a plurality of continuous recesses forming air damming chambers for substantially preventing air
  • a spinning turbine as defined in claim 4 further comprising a rotary member secured to and rotatable with said shaft outside of said housing and said insert, parts of said rotary member and of said insert directly facing each other and each having annular projections and annular recesses between said projections, said projections of one of said parts engaging into said recesses of the other part but the walls of said interengaging projections and recesses being slightly spaced from each other so as to form annular gaps, said gaps forming said air damming chambers.
  • a spinning turbine as defined in claim 1 further comprising air conveying means connected to and rotatable with said turbine element for drawing air from the inside of said housing to the outside.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
US00220597A 1971-01-27 1972-01-25 Spinning turbine Expired - Lifetime US3797962A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2103718A DE2103718C2 (de) 1971-01-27 1971-01-27 Offenend-Spinnaggregat mit einem Spinnrotor

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US3797962A true US3797962A (en) 1974-03-19

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US00220597A Expired - Lifetime US3797962A (en) 1971-01-27 1972-01-25 Spinning turbine

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US (1) US3797962A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2103718C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2123468B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1377853A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
IT (1) IT946871B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3911659A (en) * 1972-08-17 1975-10-14 Rieter Ag Maschf Bearing arrangement for a spinning rotor of an open end spinning device
US3924398A (en) * 1973-10-24 1975-12-09 Vyzk Ustav Bavlnarsky Method of and apparatus for open end spinning from staple fibers
US3981132A (en) * 1973-06-29 1976-09-21 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Device for supporting a spindle of an open-end spinning apparatus
US4273343A (en) * 1978-11-10 1981-06-16 Ihc Holland N.V. Shaft seal
US4335886A (en) * 1980-07-22 1982-06-22 Cornell Pump Company Labyrinth seal with current-forming sealing passages
US6830426B1 (en) * 2002-07-11 2004-12-14 David T. Stilcs Gas injection seal system for a centrifugal pump
US20160326987A1 (en) * 2014-02-19 2016-11-10 Mitsubishi Heavy Industries, Ltd. Thrust vectoring device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2538261C3 (de) * 1975-08-28 1981-08-06 Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt Offenend-Spinneinrichtung
DE2721385A1 (de) * 1977-05-12 1978-11-23 Stahlecker Fritz Vorrichtung zum abdichten einer oeffnung in der rueckwand eines rotorgehaeuses
DE10237040B4 (de) * 2002-08-07 2011-08-11 Wilhelm Stahlecker GmbH, 73326 Vorrichtung zum Abdichten einer Öffnung eines Rotorgehäuses
DE102016123698A1 (de) * 2016-12-07 2018-06-07 Saurer Germany Gmbh & Co. Kg Spinnrotor für eine Offenend-Spinnvorrichtung und Offenend- Spinnvorrichtung

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US835836A (en) * 1906-02-27 1906-11-13 Richard Schulz Labyrinth packing for rotary machines.
GB190613004A (en) * 1906-06-05 1907-02-14 Wilhelm Heinrich Eyermann Improvements in Stuffing Box Substitutes.
US963593A (en) * 1909-07-23 1910-07-05 Henri Legros Centrifugal pump.
GB191315487A (en) * 1912-08-15 1913-12-11 William Laighton Tobey Improved Exhaust Silencer for Internal Combustion Engines.
US2005429A (en) * 1932-03-21 1935-06-18 Foster Wheeler Corp Centrifugal pump and the like
GB527811A (en) * 1939-04-21 1940-10-16 Albert Frank Collins Oil throwers for roller bearing axleboxes and the like
US2729106A (en) * 1952-11-01 1956-01-03 Norden Ketay Corp Air-supported gyroscope
US2732232A (en) * 1956-01-24 whitfield
DE1093628B (de) * 1957-09-19 1960-11-24 Goerlitzer Maschb Veb Labyrinthspaltdichtung, insbesondere fuer Dampf- oder Gasturbinen
US3273906A (en) * 1963-08-15 1966-09-20 James A Pennington Rotating shaft seal
US3367099A (en) * 1966-03-05 1968-02-06 Vyzk Ustav Bavinarsky Sealing arrangement for a spinning apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1490165A (fr) * 1966-03-05 1967-07-28 Vyzk Ustav Bavlnarsky Chambre de filage pour le filage continu sans anneau de fibres textiles sous dépression et machine à filer pourvue d'une chambre conforme ou similaire
CH485876A (de) * 1968-01-22 1970-02-15 Elitex Zavody Textilniho Maschine zum ringlosen, kontinuierlichen Feinspinnen von Garn
GB1297308A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1969-03-20 1972-11-22
GB1286960A (en) * 1969-04-09 1972-08-31 Tmm Research Ltd Improvements relating to open-end spinning devices

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2732232A (en) * 1956-01-24 whitfield
US835836A (en) * 1906-02-27 1906-11-13 Richard Schulz Labyrinth packing for rotary machines.
GB190613004A (en) * 1906-06-05 1907-02-14 Wilhelm Heinrich Eyermann Improvements in Stuffing Box Substitutes.
US963593A (en) * 1909-07-23 1910-07-05 Henri Legros Centrifugal pump.
GB191315487A (en) * 1912-08-15 1913-12-11 William Laighton Tobey Improved Exhaust Silencer for Internal Combustion Engines.
US2005429A (en) * 1932-03-21 1935-06-18 Foster Wheeler Corp Centrifugal pump and the like
GB527811A (en) * 1939-04-21 1940-10-16 Albert Frank Collins Oil throwers for roller bearing axleboxes and the like
US2729106A (en) * 1952-11-01 1956-01-03 Norden Ketay Corp Air-supported gyroscope
DE1093628B (de) * 1957-09-19 1960-11-24 Goerlitzer Maschb Veb Labyrinthspaltdichtung, insbesondere fuer Dampf- oder Gasturbinen
US3273906A (en) * 1963-08-15 1966-09-20 James A Pennington Rotating shaft seal
US3367099A (en) * 1966-03-05 1968-02-06 Vyzk Ustav Bavinarsky Sealing arrangement for a spinning apparatus

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3911659A (en) * 1972-08-17 1975-10-14 Rieter Ag Maschf Bearing arrangement for a spinning rotor of an open end spinning device
US3981132A (en) * 1973-06-29 1976-09-21 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Device for supporting a spindle of an open-end spinning apparatus
US3924398A (en) * 1973-10-24 1975-12-09 Vyzk Ustav Bavlnarsky Method of and apparatus for open end spinning from staple fibers
US4273343A (en) * 1978-11-10 1981-06-16 Ihc Holland N.V. Shaft seal
US4335886A (en) * 1980-07-22 1982-06-22 Cornell Pump Company Labyrinth seal with current-forming sealing passages
US6830426B1 (en) * 2002-07-11 2004-12-14 David T. Stilcs Gas injection seal system for a centrifugal pump
US20160326987A1 (en) * 2014-02-19 2016-11-10 Mitsubishi Heavy Industries, Ltd. Thrust vectoring device

Also Published As

Publication number Publication date
DE2103718A1 (de) 1972-08-17
FR2123468A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1972-09-08
IT946871B (it) 1973-05-21
GB1377853A (en) 1974-12-18
DE2103718C2 (de) 1982-08-05
FR2123468B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1975-10-24

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