WO2013105996A1 - Joint mécanique pour pompe à fluide - Google Patents

Joint mécanique pour pompe à fluide Download PDF

Info

Publication number
WO2013105996A1
WO2013105996A1 PCT/US2012/025394 US2012025394W WO2013105996A1 WO 2013105996 A1 WO2013105996 A1 WO 2013105996A1 US 2012025394 W US2012025394 W US 2012025394W WO 2013105996 A1 WO2013105996 A1 WO 2013105996A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump
drive shaft
fluid
spring seat
pumping chamber
Prior art date
Application number
PCT/US2012/025394
Other languages
English (en)
Inventor
Robert R. Kimberlin
Jie Jiang
Original Assignee
Standex International Corporation
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 Standex International Corporation filed Critical Standex International Corporation
Publication of WO2013105996A1 publication Critical patent/WO2013105996A1/fr

Links

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
    • F04C2/12—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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C19/00—Sealing arrangements in rotary-piston machines or engines
    • F01C19/005—Structure and composition of sealing elements such as sealing strips, sealing rings and the like; Coating of these elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C19/00—Sealing arrangements in rotary-piston machines or engines
    • F01C19/12—Sealing arrangements in rotary-piston machines or engines for other than working fluid
    • F01C19/125—Shaft sealings specially adapted for rotary or oscillating-piston machines or engines
    • 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
    • F04C15/0034—Sealing arrangements in rotary-piston machines or pumps for other than the working fluid, i.e. the sealing arrangements are not between working chambers of the machine
    • F04C15/0038—Shaft sealings specially adapted for 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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/60—Assembly methods
    • F04C2230/603—Centering; Aligning

Definitions

  • This disclosure relates to the field of fluid pumps. More particularly, this disclosure relates to an improved drive shaft mechanical seal for pumps such as gear pumps.
  • gear pumps are known to be used in fluid applications requiring precise metering or dosing capabilities because the volume and flow rate of the liquid supplied by the gear pump is based upon the rate of rotation of the gears.
  • Typical gear pumps include a pump housing and a pair of intermeshing gears disposed within an internal pumping chamber within the housing. Input and output ports are located on opposing sides of the pump housing.
  • a drive gear is driven by a drive shaft which in turn rotates an idler gear.
  • the fluid being pumped is primarily carried from the input port through the internal pumping chamber and the spaces disposed between adjacent idler teeth to the output port.
  • the present disclosure provides a fluid pump having a pump motor, a pump housing, and a pump seal enclosure.
  • the pump housing includes an internal pumping chamber, a suction orifice in flow communication with the pumping chamber, a discharge orifice in flow communication with the pumping chamber, and a drive shaft opening.
  • the pump seal enclosure is disposed between the pump motor and the pump housing.
  • a pump drive shaft is rotatably driven by the pump motor and extends through the pump seal enclosure and the drive shafting opening into the pumping chamber.
  • a drive shaft seal assembly is disposed within the pump seal enclosure.
  • the drive shaft seal assembly includes a spring seat fastened to the drive shaft, the spring seat being disposed coaxially with the drive shaft and adjacent the pump motor and further having a first alignment mechanism, a rotary ring disposed coaxially with the drive shaft and having a second alignment mechanism for engaging the first alignment mechanism of the spring seat, a stationary ring disposed coaxially with the drive shaft and fastened to the pump seal enclosure adjacent the drive shaft opening, and a compressible spring disposed coaxially with the drive shaft between the spring seat and the rotary ring, wherein the spring biases the rotary ring against the stationary ring.
  • the spring seat is fastened to the drive shaft by at least one set screw.
  • a washer may be disposed coaxially with the drive shaft and adjacent the stationary ring, and the washer and stationary ring are non-rotatably fastened to the pump seal enclosure by at least one set screw.
  • An O-ring may also be disposed between the stationary ring and the pump housing.
  • the draft seal assembly causes substantially no pumped fluids to enter the pump seal enclosure during normal operation of the pump. Also, substantially no pumped fluids contact the spring seat, the compressible spring, or the rotary ring during normal operation of the pump.
  • the stationary ring comprises one of a ceramic material and a silicon carbide material and the rotary ring comprises a graphite material.
  • the first alignment mechanism of the spring seat includes may includes at least one alignment rib and the second alignment mechanism of the rotary ring includes at least one slot for receiving and engaging the at least one alignment rib.
  • a fluid gear pump having a pump motor, a pump housing, and a pump seal enclosure.
  • the pump housing includes an internal pumping chamber, a suction orifice in flow communication with the pumping chamber, a discharge orifice in flow communication with the pumping chamber, and a drive shaft opening.
  • the pump seal enclosure is disposed between the pump motor and the pump housing.
  • a pump drive shaft is rotatably driven by the pump motor and extends through the pump seal enclosure and the drive shafting opening into the pumping chamber.
  • a drive gear having a plurality of drive gear teeth, is disposed within the pumping chamber and is rotatably driven by the drive shaft.
  • An idler gear having a plurality of idler gear teeth intermeshed with the drive gear teeth, is disposed within the pumping chamber and attached to an idler shaft disposed within the pumping chamber.
  • a drive shaft seal assembly is disposed within the pump seal enclosure.
  • the drive shaft seal assembly includes a spring seat fastened to the drive shaft, the spring seat being disposed coaxially with the drive shaft and adjacent the pump motor and further having a first alignment mechanism, a rotary ring disposed coaxially with the drive shaft and having a second alignment mechanism for engaging the first alignment mechanism of the spring seat, a stationary ring disposed coaxially with the drive shaft and fastened to the pump seal enclosure adjacent the drive shaft opening, and a compressible spring disposed coaxially with the drive shaft between the spring seat and the rotary ring, wherein the spring biases the rotary ring against the stationary ring.
  • the spring seat is fastened to the drive shaft by at least one set screw.
  • a washer is disposed coaxially with the drive shaft and adjacent the stationary ring, and the washer and stationary ring are non-rotably fastened to the pump seal enclosure by at least one set screw.
  • An O-ring is disposed between the stationary ring and the pump housing.
  • the stationary ring comprises one of a ceramic material and a silicon carbide material and the rotary ring comprises a graphite material.
  • the first alignment mechanism of the spring seat includes at least one alignment rib and the second alignment mechanism of the rotary ring includes at least one slot for receiving and engaging the at least one alignment rib.
  • FIG. 1 is a cross-sectional side view of a fluid gear pump according to one embodiment of the present disclosure
  • FIG. 2 is a cross-sectional front view of a fluid gear pump according to one embodiment of the present disclosure illustrating the internal pumping chamber;
  • FIG. 3 is a cross-sectional view side view of a pump housing and pump seal enclosure according to one embodiment of the present disclosure.
  • FIG. 4 is an exploded view of a drive shaft seal assembly according to one embodiment of the present disclosure.
  • a fluid pump 10 is provided.
  • the fluid pump 10 according to the present disclosure is suitable for pumping a wide variety of liquids.
  • the fluid pump 10 is particularly suited for pumping liquids for use in beverages, such as for pumping liquids in carbonated water systems, for espresso and cappuccino machines, and for beer cooling systems.
  • the fluid pump 10 includes a motor 12.
  • the pump motor 12 is preferably an electric motor; however, the pump motor 12 may alternatively be powered by other means such as by internal combustion.
  • a pump drive shaft 14 is attached to the pump motor 12 and driven thereby.
  • the pump drive shaft 14 is preferably made from a metal such as steel.
  • the fluid pump 10 includes a pump assembly 16 having a pump housing 18 and a pump seal enclosure 20 disposed between the pump motor 12 and pump housing 18.
  • the pump seal enclosure 20 is preferably readily removable from the pump housing 18 for pump disassembly and cleaning.
  • the pump drive shaft 14 extends through the pump seal enclosure 20 into the pump housing 18 for driving the pump assembly 16. While it should be understood that the mechanical seal assembly of the present disclosure may be used in connection with numerous types of fluid displacement pump such as a gear pump, vane pump, centrifugal pumps, etc., the mechanical seal assembly of the present disclosure, as shown and described in the exemplary embodiments herein, is preferably used with a gear pump.
  • the pump housing 18 is preferably oval shaped and includes an internal pumping chamber 22, a suction orifice 24 in flow communication with the pumping chamber 22, and a discharge orifice 26 in flow communication with the pumping chamber 22.
  • the pump housing 18 further includes a drive shaft opening 28 through which the drive shaft 14 extends into the pump housing 18.
  • a drive gear 30, having a plurality of drive gear teeth 31, is disposed within the pumping chamber 22 and is operable to be rotatably driven by the drive shaft 14.
  • An idler gear 32 having a plurality of idler gear teeth 33 operable to be intermeshed with the drive gear teeth 31 so that the idler gear 32 is rotatable when the drive gear 30 is driven by the drive shaft 14, is also disposed within the pumping chamber 22 and is attached to an idler shaft 36 disposed within the pumping chamber 22.
  • the drive shaft 14 rotates the drive gear 30 which in turn rotates the idler gear 32.
  • the drive gear teeth 31 come out of mesh with the idler gear teeth 33, the teeth 31 and 33 create expanding volume on the suction orifice 24. Liquid flows into the suction orifice 24 and is trapped by the gear teeth 31 and 33 as they rotate. Liquid then travels around the interior of the pumping chamber 22 until it is forced out through the discharge orifice 26 at a greater pressure than when the liquid flowed into the suction orifice 24.
  • the suction orifice 24 and discharge orifice 26 are interchangeable depending on the direction of rotation of the drive gear 30 and idler gear 32.
  • the pump housing 18 is generally formed from a high strength material.
  • the pump housing 18 is preferably formed of a metal such as brass or stainless steel; however, in other embodiments, the pump housing 18 is preferably made from a high strength plastic material. More preferably, the pump housing 18 is made from an injection molded plastic material. The plastic material may be reinforced with fibers such as glass fibers for added strength.
  • the pump seal enclosure 20 is generally formed from a high strength material.
  • the pump seal enclosure 20 is preferably formed of stainless steel, carbon, or silicon carbide. However, these and other materials may be used and are often dependent on the particular fluids being pumped through the pump assembly 16.
  • the drive shaft opening 28 is sealed by a drive shaft seal assembly 34 disposed within the pump seal enclosure 20.
  • the drive shaft seal assembly 34 includes a spring seat 36 disposed adjacent the pump motor 12, a stationary ring 50 disposed adjacent the pump housing 18, and a rotary ring 44 disposed between the spring seat 36 and the stationary ring 50.
  • Each of the spring seat 36, rotary ring 44, and stationary ring 50 are disposed coaxially with the drive shaft 14.
  • the spring seat 36 is fastened to the drive shaft 14 adjacent the pump motor using at least one set screw 38, or other known attachment mechanisms.
  • the spring seat 36 includes at least one first alignment mechanism 40 attached to the spring seat 36 for engaging a corresponding second alignment mechanism 46 attached to the rotary ring 44 for coupling the spring seat 36 with the rotary ring 44.
  • the first alignment mechanism 40 is an alignment rib disposed on an outer surface 42 of the spring seat 36 and the second alignment mechanism 46 is a slot disposed within an outer surface 48 of the rotary ring 44 for receiving the alignment rib 40 of the spring seat 36.
  • the stationary ring 50 is attached to the pump seal enclosure 20 adjacent the drive shaft opening 28 using at least one set screw 52, or other known attachment mechanisms.
  • a compressible spring 54 is also disposed coaxially with the drive shaft 14 between the spring seat 36 and the rotary ring 44 for biasing the rotary ring 44 against the stationary ring 50.
  • the drive shaft seal assembly 34 may include a washer 56 disposed between the stationary ring 50 and the rotary ring 44. Washer 56 is preferably also fixed to the pump seal enclosure using set screws 52.
  • the drive shaft seal assembly 34 may also include an O-ring 58 disposed between the stationary ring 50 and the pump housing 18 for further sealing the drive shaft seal assembly 34 against the pump housing 18.
  • the stationary ring 50 As the stationary ring 50 is attached to the pump seal enclosure 20, the stationary ring 50 is fixed and does not rotate in conjunction with the drive shaft 14 during operation of the pump 10. Accordingly, the stationary ring 50, and O-ring 58 if present, prevents pumped fluids from entering the pump seal enclosure 20 during normal operation of the pump 10. Thus, substantially no pumped fluids contact the spring seat 36, the compressible spring 54, or the rotary ring 44 during normal operation of the pump.
  • This design results in a fluid pump operable to be used in sanitary applications because fewer parts of the pump are in contact with the fluid flow path, and the design reduces the amount of liquid waste when the pump is being flushed for cleaning.
  • the stationary ring 50 While the stationary ring 50 is fixed to the pump seal enclosure 20 so that the stationary ring 50 does not rotate during operation of the pump 10, the spring seat 36 is attached to and rotates with the drive shaft 14. Because the rotary ring 44 is coupled with the spring seat 36, the rotary ring 44 also rotates in conjunction with the spring seat 36 and drive shaft 14. Due to the friction caused by the rotary ring 44 being biased against the stationary ring 50, the stationary ring 50 is preferably composed of a ceramic material while the rotary ring 44 is composed of a graphite material.

Abstract

L'invention porte sur une pompe à fluide qui comprend un moteur de pompe, un corps de pompe et un logement de joint de pompe. Le corps de pompe comprend une chambre de pompage interne, un orifice d'aspiration en communication d'écoulement avec la chambre de pompage, un orifice de refoulement en communication d'écoulement avec la chambre de pompage et une ouverture d'arbre d'entraînement. Le logement de joint de pompe est disposé entre le moteur de pompe et le corps de pompe. Un arbre d'entraînement de pompe est entraîné en rotation par le moteur de pompe et s'étend à travers le logement de joint de pompe et à travers l'ouverture d'arbre d'entraînement pour pénétrer dans la chambre de pompage. Un ensemble joint d'arbre d'entraînement est disposé à l'intérieur du logement de joint de pompe. L'ensemble joint d'arbre d'entraînement comprend une portée de ressort fixée à l'arbre d'entraînement, la portée de ressort étant disposée coaxialement à l'arbre d'entraînement et adjacente au moteur de pompe et ayant en outre un premier mécanisme d'alignement, une bague rotative disposée coaxialement à l'arbre d'entraînement et ayant un second mécanisme d'alignement destiné à s'accoupler avec le premier mécanisme d'alignement de la portée de ressort, une bague fixe disposée coaxialement à l'arbre d'entraînement et fixée au logement de joint de pompe dans une position adjacente à l'ouverture d'arbre d'entraînement, et un ressort compressible disposé coaxialement à l'arbre d'entraînement entre la portée de ressort et la bague rotative, le ressort appuyant la bague rotative contre la bague fixe.
PCT/US2012/025394 2011-02-17 2012-02-16 Joint mécanique pour pompe à fluide WO2013105996A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201161443826P 2011-02-17 2011-02-17
US61/443,826 2011-02-17

Publications (1)

Publication Number Publication Date
WO2013105996A1 true WO2013105996A1 (fr) 2013-07-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2012/025394 WO2013105996A1 (fr) 2011-02-17 2012-02-16 Joint mécanique pour pompe à fluide

Country Status (2)

Country Link
US (1) US20120213657A1 (fr)
WO (1) WO2013105996A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6278440B2 (ja) * 2013-09-24 2018-02-14 Ｎｅｃエナジーデバイス株式会社 リチウム電池用電極の製造方法およびそれを用いたリチウム電池の製造装置
CN103696959A (zh) * 2013-12-10 2014-04-02 无锡威孚精密机械制造有限责任公司 齿轮泵装置
RU2700840C2 (ru) 2014-02-28 2019-09-23 Проджект Феникс, Ллк Насос, объединенный с двумя первичными приводами, приводимыми в действие независимо друг от друга (варианты), и способ работы насоса (варианты)
US10294936B2 (en) * 2014-04-22 2019-05-21 Project Phoenix, Llc. Fluid delivery system with a shaft having a through-passage
EP3957853A1 (fr) 2014-06-02 2022-02-23 Project Phoenix LLC Ensemble actionneur linéaire et système
RU2683005C2 (ru) 2014-07-22 2019-03-25 Проджект Феникс, Ллк Шестеренчатый насос с внешним зацеплением, объединенный с двумя независимо приводимыми в действие первичными приводами
US10072676B2 (en) 2014-09-23 2018-09-11 Project Phoenix, LLC System to pump fluid and control thereof
EP3344853B1 (fr) 2015-09-02 2020-11-04 Project Phoenix LLC Système de pompage de fluide et commande associée
DE102018129054B4 (de) * 2018-11-19 2023-08-31 FRISTAM Pumpen Schaumburg GmbH Rotierende Pumpe

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2423436A (en) * 1945-03-30 1947-07-08 Byron Jackson Co Submersible motorpump
US4251192A (en) * 1978-12-07 1981-02-17 Clark Alonzo R Rotary pump with symmetrical by-pass and rotor with resiliently mounted vanes
US5096396A (en) * 1991-03-05 1992-03-17 V. Q. Corporation Rotary apparatus having passageways to clean seal chambers
US20060061041A1 (en) * 2004-09-22 2006-03-23 Scenic Precise Element Inc. Shaft-sealing device having an inner modular structure for combining with a rotary machine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2347386A (en) * 1939-05-25 1944-04-25 Nash Engineering Co Pump

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2423436A (en) * 1945-03-30 1947-07-08 Byron Jackson Co Submersible motorpump
US4251192A (en) * 1978-12-07 1981-02-17 Clark Alonzo R Rotary pump with symmetrical by-pass and rotor with resiliently mounted vanes
US5096396A (en) * 1991-03-05 1992-03-17 V. Q. Corporation Rotary apparatus having passageways to clean seal chambers
US20060061041A1 (en) * 2004-09-22 2006-03-23 Scenic Precise Element Inc. Shaft-sealing device having an inner modular structure for combining with a rotary machine

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