US3394925A - Apparatus for mixing abrasive liquids - Google Patents

Apparatus for mixing abrasive liquids Download PDF

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Publication number
US3394925A
US3394925A US550227A US55022766A US3394925A US 3394925 A US3394925 A US 3394925A US 550227 A US550227 A US 550227A US 55022766 A US55022766 A US 55022766A US 3394925 A US3394925 A US 3394925A
Authority
US
United States
Prior art keywords
liquid
conduit
gear
abrasive
gears
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
US550227A
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English (en)
Inventor
Sluijters Robert
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.)
Akzona Inc
Original Assignee
American Enka Corp
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
Priority claimed from NL6504738A external-priority patent/NL6504738A/xx
Application filed by American Enka Corp filed Critical American Enka Corp
Application granted granted Critical
Publication of US3394925A publication Critical patent/US3394925A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D11/00—Control of flow ratio
    • G05D11/006—Control of flow ratio involving a first fluid acting on the feeding of a second fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/60—Pump mixers, i.e. mixing within a pump
    • B01F25/62—Pump mixers, i.e. mixing within a pump of the gear type
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D1/00—Treatment of filament-forming or like material
    • D01D1/06—Feeding liquid to the spinning head
    • D01D1/065—Addition and mixing of substances to the spinning solution or to the melt; Homogenising
    • 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
    • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
    • F04C13/001—Pumps for particular liquids
    • 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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
    • 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
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms

Definitions

  • ABSTRACT on THE DISCLOSURE Apparatus for admixing an abrasive-containing component with a liquid especially suitable for being manufactured into film, filaments, fibers or yarns comprising a plurality of serially arranged gear pumping means positioned in a single housing, a first of said pumping means constructed to meter an unmixed liquid to a second and third pumping means, the second pumping means constructed to meter a portion of the unmixed liquid from the first pumping means through a conduit system in order to wash and lubricate moving parts of the third pumping means, said third pumping means constructed to meter the abrasive component to a main stream of viscous liquid flow.
  • This invention relates to apparatus for supplying to a stream of viscous liquid an additive having a relatively low viscosity and having an abrasive component suspended therein.
  • abrasive additives are preferably injected into the bypass stream between two or more gear pumps, an expedient particularly expounded upon in the above-identified patent.
  • This third gear pump feeds unmixed washing and lubricating liquid to the second of said gear pumps in the series and prevents the abrasive components of the suspension being added to the main liquid flow stream from coming in contact with various moving components of the pump where normally excessive wear occurse.g., gear side faces, drive shaft bearings, etc.
  • Disadvantages associated with this arrangement reside in the fact that the three gear pumps must be separately driven, an expedient which requires rather complicated construction. For example, the three pumps each require three separate driving mechanisms having to be separately sealed and further having a separate and distinct lubricating system. More importantly, it has been found that if the ratio of the amount of pigment suspension to that of spinning liquid is to be changed and readjusted, a complicated and time consuming procedure is required to adapt the apparatus to such a change.
  • a novel three pump arrangement provided as a unit in a single housing and having means with a common drive shaft for metering a plurality of liquid streams through a unique system of interconnecting conduits.
  • the invention provides means for continuously mixing a number of streams of different composition into a single stream by providing arbitrarily arranged gear couplings permitting a metered flow.
  • the unique arrangement of the channels permitting metering of the liquids to be admixed also provides for an effective washing of the pumping gear coupling through which the abrasive component passes.
  • This washing and lubricating is principally achieved by mounting the pumps in a plate pack arrangement and having one gear coupling metering a washing and lubricating liquid to the particular pump through which the abrasive component passes and preferably positioned between two sets of gear couplings.
  • Another advantage facilitated by the construction of the present invention resides in the means for easily changing the ratio of the abrasive suspension to the highly viscous unmixed spinning liquid in the bypass stream.
  • a mixer used for initial mixing and forming a suspension of the abrasive component in a lower viscosity carrier liquid facilitates a direct mechanical coupling between a stirrer of the mixer and the drive shaft.
  • the two elements can now be effectively interconnected by a speed regulator. Control of the speed regulator controls the rate of mixing action and delivery of the lubricating pump as Well as the rate of the feed of the suspension to the bypass stream.
  • a set or a gear coupling is a cooperating gear arrangement, known in the art, providing for metered liquid flow through the apparatus and to the viscous liquid to which an abrasive component is being added.
  • the coupling can be used to feed a liquid which has not been admixed with an abrasive suspension or a liquid which has been admixed with an abrasive suspension.
  • a plate pack arrangement is a series of plates which, according to this invention, is channeled to provide a unique system of flow channels for both the liquid material to be admixed and the liquid material serving as the lubricating and washing component for the various moving parts of the apparatus set out in more detail below.
  • the plate pack further acts to contain, position and provide a proper proximal relationship between opposed gear couplings pumping and metering the liquids passing through the apparatus.
  • FIGURE 1 is a schematic representation of the apparatus
  • FIGURE 2 shows a detail of the apparatus in longitudinal section useful in carrying out the invention.
  • FIGURE 3 shows the same detail in longitudinal section along lines IIIIII of FIGURE 2.
  • numeral 1 represents the entire pump assembly according to the invention shown schematically, with externally assembled mixing container 2 having a stirrer or mixing blade assembly.
  • Pump assembly 1 and mixing blades 16 are driven by shafts 3 and 4, respectively, which by way of gears 5 and 6, are driven by a gear 7 mounted on the output shaft of a speed regulator 8.
  • speed regulator 8 is driven by an electric motor 9.
  • the main stream of a spinning liquid is pumped through conduit 10 by a gear pump (not shown). From conduit 10 there leads off a conduit or side stream 11 which runs to the pump assembly 1.
  • abrasive suspension will eventually be added.
  • the abrasive is initially fed to the apparatus through conduit 12 and into mixing container 2. After the abrasive suspension and the sidestream of spinning liquid have been joined and mixed, they are passed through conduit 13 and returned to conduit 10 which is used to feed the major portion of spinning liquids.
  • the mass fed from conduit 13 and the liquid flowing through conduit 10 (containing unmixed liquid) are thoroughly mixed by a mixer 18 usually immediately before being passed to a spinning point.
  • This spinning point may be of conventional design.
  • Mixer 18 can be of the type particularly described in US. Patents Nos. 3,051,452 and/or 3,051,453.
  • the suspension is fed to the spinning liquid by initially bringing together in the mixer a stream of the suspension being supplied through conduit 12 and a spinning liquid being pumped through conduit 14 from pump assembly 1. From mixer 2 (through conduit 15 to pump assembly 1) an amount of liquid is discharged which is equal to the sum of amounts of liquid fed per unit time through conduits 12 and 14 to mixer 2.
  • Mixer 2 is of known design and comprises driving shaft 4 fixedly positioning radially extending pins or blades 16. Blades 16 rotate between fixed pins 17 attached to and extending outwardly from the inside wall of the mixer housing.
  • Pump assembly 1 comprises three gear pumps having gears 19, 20 and 21 mounted on drive shaft 3.
  • the three gears are coupled with gears 22, 23 and 24 which are freely rotatable.
  • Conduit 11 feeds to the intake opening adjacent to the first pumping gear couple formed by gears 19 and 22.
  • This gear couple displaces the liquid mainly through conduit 14 to mixing container 2 while the remainder of the liquid is displaced through conduit 25 to the pumping gear couple formed by gears 20 and 23.
  • This unmixed liquid being pumped by gears 20 and 23 acts as the lubricating liquid.
  • the relatively small proportion of liquids applied through conduit 25 is displaced by the pumping couple formed by gears 20 and 23 through conduit 26 and subsequently through conduits 27, 28, 29 and 30.
  • the liquid being supplied through conduit 15 is pumped by the pumping couple formed by gears 21 and 24 through conduit 13 and back to main conduit 10.
  • Channels 27, 28, 29 and 30 feed into points where drive shaft 3, shaft 48, and gears 21 and 24 are supported by bearings.
  • the liquid supplied by the lubricating pumping gear couples 20 and 23 will flow through these bearings radially outwardly along the side face of gears 21 and 24 and to the circumferential surfaces of said gears. From this point the liquid is further pumped through conduit 13.
  • This unique system of channels prevents the abrasivecontaining liquid flowing from the space between the teeth of gears 21 and 24 to between the side faces of the gears and the stationary plates of pump assembly 1. This prevents any wear which usually occurs in known types of apparatus.
  • the pump assembly is shown being made up of a number of fiat plates 31 through 43 which form a plate pack (together with a bearing housing 44 for drive shaft 3).
  • Drive shaft 3 passes through the bearing housing and the passage is sealed by means of packing assembly 45.
  • Gears 22, 23 and 24 are attached to shafts 46, 47 and 48 mounted in plate pairs 32, 34, 36, 38, 40 and 42, respectively.
  • drive shaft 3 consists of several short sections on which the gears 19, 20 and 21 are mounted. These are intercoupled by the coupling members 49, 50 and 51 rotatable in plates 35, 39 and 43, respectively.
  • Plates 33, 37 and 41 are provided with openings which contain gear couples 19 and 22; 20 and 23; 21 and 24, respectively.
  • the conduits 11, 14, 15 and 13 of FIGURE 1 run partly through plates 31, 35, 39 and 43.
  • Channels 25 to 30, inclusive (shown in FIGURE 1) are bores through the pack formed by the plates 31 to 43, inclusive, and the bearing housing 44.
  • Lubricating liquid flows through the channels 28 and 29 to the ends of shaft 48. The liquid then flows in an axial direction to gear 24 and in a radial direction over the side faces thereof and then to the spaces between the teeth of the coacting gears.
  • grooves 53 and 54 To especially facilitate the flow of the liquid along the journals of drive shaft 48 there are provided grooves 53 and 54. By rotation of the drive shaft, such grooves, in fact, provide a pumping action to the lubricating liquid. Similarly, the lubricating liquid is guided to the channels 27 and 30 to coupling member 50 and to the collar on the drive shaft 3, respectively. The direction of flow of the liquids is indicated by the arrows.
  • the various coupling members 50 and 51 are also provided with pumping grooves 52 and 55, which facilitate the flow of the liquid from points of entrance in channels 27 and 30 and in the direction of gear 21.
  • the entire pump assembly is of a very compact construction and facilitates the incorporation of the unique system of conduits.
  • the drive assembly does not present any problems whatsoever in the operation of the apparatus as described above and may be varied in any desired manner.
  • the apparatus ermits spinning pigmented filaments yielding highly satisfactory filaments and fibers, particularly when compared with filaments and fibers wherein the color is added by known means.
  • the filaments and fibers formed when using apparatus according to this invention are not just colored on the surface but possess a generally uniform colored cross-section. Consequently, the colors of such filaments and fibers are less sensitive to the effects of chemical action and effects of heat and light. Moreover, eliminating the need for frequent changing of parts, as is characteristic to known apparatus, improves the cost factor of the process.
  • Apparatus for admixing an abrasive-containing component with a higher viscosity liquid suitable for being formed into film, filaments, fibers, yarns or threads, comprising in combination,
  • said plural pumping means having a common drive means and a system of interconnecting conduits for liquid flow
  • conduits constructed to confine and properly channel an unmixed viscous liquid, an abrasive component, and a mixed viscous liquid-abrasive component being pumped by said plural pumping means,
  • a first of said plural pumping means comprising a gear couple, constructed to meter an unmixed, viscous liquid to a second and third pumping means,
  • the second pumping means comprising a gear couple, constructed to meter a portion of the unmixed liquid from the first pumping means through a conduit system to lubricate and wash the drive shaft, bearins and gears comprising elements of the third pumping means, and
  • said third pumping means constructed to meter the said abrasive component to a main stream of viscous liquid flow.
  • Apparatus according to claim 1 wherein said housing supports and maintains the plurality of pumping means and is constructed of a series of juxtaposed plates of varying thickness.
  • Apparatus according to claim 1 wherein a separately housed mixer is provided for admixing said abrasive component and said viscous liquid, a plurality of stirrer means mounted on a drive shaft in said mixer, and means mechanically interconnecting said shaft to the drive shaft for the said plural pumping means through a speed regulating means.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Coating Apparatus (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
US550227A 1965-04-14 1966-05-16 Apparatus for mixing abrasive liquids Expired - Lifetime US3394925A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL6504738A NL6504738A (enrdf_load_stackoverflow) 1965-04-14 1965-04-14
NL6506835A NL6506835A (enrdf_load_stackoverflow) 1965-04-14 1965-05-29

Publications (1)

Publication Number Publication Date
US3394925A true US3394925A (en) 1968-07-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
US550227A Expired - Lifetime US3394925A (en) 1965-04-14 1966-05-16 Apparatus for mixing abrasive liquids

Country Status (6)

Country Link
US (1) US3394925A (enrdf_load_stackoverflow)
BE (1) BE681424A (enrdf_load_stackoverflow)
DE (1) DE1557166A1 (enrdf_load_stackoverflow)
FR (1) FR94454E (enrdf_load_stackoverflow)
GB (2) GB1152326A (enrdf_load_stackoverflow)
NL (1) NL6506835A (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2693675A1 (fr) * 1992-07-16 1994-01-21 Bayer Ag Dispositif de préparation d'un mélange réactionnel fluide formateur de matière plastique massive ou cellulaire.
US5453250A (en) * 1992-07-16 1995-09-26 Bayer Aktiengesellschaft Apparatus for the preparation of a flowable reaction mixture
US20120087821A1 (en) * 2010-10-06 2012-04-12 Agustawestland S.P.A. Pump Assembly, In Particular for Helicopter Lubrication
CN102817831A (zh) * 2011-06-08 2012-12-12 苏州工业园区华西泵业有限公司 大容量搅拌计量泵
CN102817832A (zh) * 2011-06-08 2012-12-12 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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4130312C1 (enrdf_load_stackoverflow) * 1991-09-12 1992-12-24 Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover, De
TW509738B (en) * 1999-03-25 2002-11-11 Barmag Barmer Maschf Lubrication apparatus and method of applying a lubricant
CN109554769B (zh) * 2019-01-11 2024-05-10 江苏帝达智能科技有限公司 一种熔体注入装置及其动态混合器

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US796724A (en) * 1905-01-18 1905-08-08 Peter Cooper Hewitt Pumping apparatus.
US1665026A (en) * 1927-06-10 1928-04-03 Albert E Grant Apparatus for maintaining uniform oil level
US1689673A (en) * 1925-06-13 1928-10-30 Lalor Fuel Oil System Company Gear pump
US2125455A (en) * 1936-03-31 1938-08-02 Geneva Processes Inc Mixing device for preparing mixtures such as mayonnaise and salad dressing
US2207493A (en) * 1936-07-09 1940-07-09 Deutsche Waffen & Munitionsfab Means for feeding a continuously uniform quantity of fluids
US2986096A (en) * 1955-10-24 1961-05-30 Plessey Co Ltd Journal bearing
US3051452A (en) * 1957-11-29 1962-08-28 American Enka Corp Process and apparatus for mixing

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US796724A (en) * 1905-01-18 1905-08-08 Peter Cooper Hewitt Pumping apparatus.
US1689673A (en) * 1925-06-13 1928-10-30 Lalor Fuel Oil System Company Gear pump
US1665026A (en) * 1927-06-10 1928-04-03 Albert E Grant Apparatus for maintaining uniform oil level
US2125455A (en) * 1936-03-31 1938-08-02 Geneva Processes Inc Mixing device for preparing mixtures such as mayonnaise and salad dressing
US2207493A (en) * 1936-07-09 1940-07-09 Deutsche Waffen & Munitionsfab Means for feeding a continuously uniform quantity of fluids
US2986096A (en) * 1955-10-24 1961-05-30 Plessey Co Ltd Journal bearing
US3051452A (en) * 1957-11-29 1962-08-28 American Enka Corp Process and apparatus for mixing

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2693675A1 (fr) * 1992-07-16 1994-01-21 Bayer Ag Dispositif de préparation d'un mélange réactionnel fluide formateur de matière plastique massive ou cellulaire.
US5453250A (en) * 1992-07-16 1995-09-26 Bayer Aktiengesellschaft Apparatus for the preparation of a flowable reaction mixture
US20120087821A1 (en) * 2010-10-06 2012-04-12 Agustawestland S.P.A. Pump Assembly, In Particular for Helicopter Lubrication
US8668481B2 (en) * 2010-10-06 2014-03-11 Agustawestland S.P.A. Pump assembly, in particular for helicopter lubrication
CN102817831A (zh) * 2011-06-08 2012-12-12 苏州工业园区华西泵业有限公司 大容量搅拌计量泵
CN102817832A (zh) * 2011-06-08 2012-12-12 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
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
CN102817831B (zh) * 2011-06-08 2015-08-26 苏州工业园区华西泵业有限公司 大容量搅拌计量泵

Also Published As

Publication number Publication date
GB1152654A (en) 1969-05-21
DE1557166A1 (de) 1970-08-27
FR94454E (fr) 1969-08-22
BE681424A (enrdf_load_stackoverflow) 1966-10-31
GB1152326A (en) 1969-05-14
NL6506835A (enrdf_load_stackoverflow) 1966-11-30

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