US3661058A - Pump having a varying output - Google Patents

Pump having a varying output Download PDF

Info

Publication number
US3661058A
US3661058A US857379A US3661058DA US3661058A US 3661058 A US3661058 A US 3661058A US 857379 A US857379 A US 857379A US 3661058D A US3661058D A US 3661058DA US 3661058 A US3661058 A US 3661058A
Authority
US
United States
Prior art keywords
barrel
pistons
pump
conical
casing
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
US857379A
Other languages
English (en)
Inventor
Robert J Gh Peron
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.)
DUMONT ET FRERES SA G
Original Assignee
DUMONT ET FRERES SA G
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 DUMONT ET FRERES SA G filed Critical DUMONT ET FRERES SA G
Application granted granted Critical
Publication of US3661058A publication Critical patent/US3661058A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F04B1/2014—Details or component parts
    • F04B1/2035—Cylinder barrels

Definitions

  • This invention relates to pumps having a varying output of the type comprising a plurality of parallel pistons housed in a common barrel, a means for rotating the said barrel about its axis and an angularly variable plate in relation with the said pistons for varying or adjusting their axial shifting.
  • This invention relates to pumps having a varying output of the type comprising a plurality of parallel pistons housed in a common barrel, a means for rotating the said barrel about its axis and an angularly variable plate in relation with the said pistons for varying or adjusting their axial shifting.
  • FIG. 1 is a diametral longitudinal section through a pump having a varying output according to the invention, the pump being shown in its state of maximum output;
  • FIG. 2 is a longitudinal section on the line Il-II of FIG. 1;
  • FIGS. 3, 4 and 5 show respectively sections on the lines III- III, IVIV, VV ofFIG. 1;
  • FIG. 6 shows, on an enlarged scale, the portion indicated in F on FIG. 1;
  • FIG. 7 is a view similar to FIG. 6 of another embodiment of the indicated portion.
  • the pump comprises the combination of a casing 1, a rotating barrel equipment 2 and a mechanism 3 for varying or adjusting the output of the pump.
  • the casing 1 comprises the assembly of two shells 4-5 and a back facing 6.
  • the configuration of the shells 4-5 is such that they define laterally two co-axial bearings 7-8 having a packing 9-10 en gaged by diametrally opposite journals 11-12 forming part of the said mechanism 3 for respectively varying and adjusting the output of the pump.
  • a passage 13 for the member 14 actuating the device provided for varying and adjusting the output of the pump.
  • the bottom of shell 4 has a central passage 15 both ends of which have a larger diameter.
  • the inner end 19 forms the housing of a roller or needle bearing 20 supported on the bottom 21 of the said widening through the intermediary of a resilient washer 22 which is tensioned when mounting the pump, as described hereafter.
  • the shell 5 has the configuration of a duly profiled sleeve firmly interconnected with the said shell 4 through tightening screws 23.
  • the annular back face of shell 5 is firmly fastened the facing 6 through the intermediary of screws 24.
  • the inner wall of shell 5 has an annular shoulder 25 housing the crown 26 supporting the roller or needle bearing 27 which abuts on the outer face of the barrel 28.
  • the said crown 26 is made stationary by a stop ring 29 housed in a peripheral corresponding groove of the inner face of shell 5.
  • the barrel 28 is traversed axially by a passage consisting namely of three sections having different diameters 30, 31, 32 respectively.
  • the axis 33 is interconnected with the said barrel 28 through the pin 34 and it is extended to rest upon shell 4 through the intermediary of the said bearing 20. This axis has a projecting section for fastening the driving device (not shown).
  • the axis 33 has stop rings 37-38 housed into the peripheral grooves -36.
  • the axis 33 has still, in its rear portion, an axial channel 39 opening into a diametral channel 40 which opens in turn into the free space of the casing 1 defined by shells 4 and 5.
  • the barrel 28 has a number of cylindrical housings 41 equally spaced and disposed at an equal distance form the longitudinal axis of the said barrel.
  • the said housings or cylinders are each extended by a chamber 42 in relation with a secant passage 43 opening onto the rear face of the barrel.
  • Each housing engages with a slight fit a hollow piston 44 the projecting portion of which is terminated by a spherical head 45.
  • an axial rod 46 having a conical head 47 the top of which rests upon the center of the conical bottom 48 of the hollow space of the piston.
  • a return spring 49 leaning, on one hand, upon the said head of the axial rod 46 and, on the other hand, upon the bottom 50 of the corresponding chamber 42 of the barrel 28.
  • the spherical head 45 of each piston is freely housed in a bearing 51 and these various bearings are supported on a ring 52 having a hub 53 defined interiorly by a cylindrical tapered wall 54-55.
  • This ring 52-53-54 is housed in an oscillating plate 56 upon which it is supported through the intermediary of a ring 57 and bearings 58-59.
  • the previously mentioned journals 11-12 form part of the said oscillating plate 56 and, by means of said journals, the said plate rests in the previously mentioned packings 9-10 through the intermediary of bushings 60-61.
  • the said packings and bushings are kept into position by means of pairs of stop rings 62-63 and 64-65 respectively.
  • the back face of facing 6 has two threaded holes 66 and 67 for fastening a suction conduit and a discharge conduit respectively.
  • Each hole 66-67 is extended by a port 68-69 respectively under the form of a ring portion extending each along an arc of about
  • These annular ports 68-69 open onto the front face of facing 6 in front of the adjoining face of the barrel 28, i.e. also in front of the back face of the barrel traversed by the said secant passages 43.
  • the front face of facing 6 has still a central circular recess 70 coaxial with the central axial passage 30 of barrel 28.
  • this head may have an axial channel 71 opening into a free space 72 defined by the front butt face of the said hollow piston 44 and the corresponding portion of the spherical wall defining the recess of bearing 51.
  • the bottom of the said recess is traversed throughout by a hole 73 thereby opening onto the front face of the said ring 52.
  • the shell 4 of the casing has a number of tapped holes 74 disposed in a crown about the longitudinal axis of the pump so that the driving motor thereof or any other suitable driving device may be fastened thereto.
  • this pump will take advantage of the internal and additional oil circulation via passages 30-39-40 of the axial portion of the pump and, on the other hand, in the particular case of FIG. 7, via the axial channel 71, the free space 72 and the hole 73 provided in the head of the hollow pistons 44 or the bearings 45.
  • the so conditioned pump has outstanding advantages on the technical, industrial and economical points of view.
  • the fundamental design gives rise to a very easy manufacture owing to the particular morphology of the essential constituting elements of the pump: the casing l, the rotating barrel equipment 2 and the mechanism for varying the output of the pump.
  • the pump is very easily mounted and dismantled for possible repair and maintenance purposes.
  • the number of parts provided for making a pump having a varying output is also relatively very reduced, thereby giving rise to a very competitive cost price with the very nature of the constituting parts.
  • the device for varying the output of the pump is actuated via any suitable member namely shown diagrammatically by lever 14 under such conditions that, by means of a minimum effort and without producing interfering stresses between the rotating barrel device and the adjustment plate 3, it may oscillate about the virtual center with the minimum actuating effort.
  • a variable output displacement pump a casing; a barrel rotatably mounted within said casing, and having a plurality of cylinders therein arranged generally parallel to the axis of rotation of said barrel; means for rotating said barrel; a piston reciprocally received within each of said cylinders, said pistons each having a bore therein extending inwardly from the rear end thereof and terminating in a conical bottom wall; a swash plate received within and journaled to said casing, said swash plate confronting the front ends of said pistons and being tiltable relative to the front face of said barrel; an axial rod received within the bore of each piston, and having a conical head seatable on said conical bore bottom wall; a return spring associated with each axial rod for urging the conical head thereof into engagement with its associated conical bore bottom wall; a generally spherical head on the front end of each of said pistons; each of said pistons including a lubrication channel leading from the conical bottom of said piston bore to the surface of said
  • said casing comprises a pair of shells secured together in confronting relationship, said shells having a passage formed at the juncture thereof and through which said activating member extends.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
US857379A 1968-09-26 1969-09-12 Pump having a varying output Expired - Lifetime US3661058A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE721410 1968-09-26

Publications (1)

Publication Number Publication Date
US3661058A true US3661058A (en) 1972-05-09

Family

ID=3853585

Family Applications (1)

Application Number Title Priority Date Filing Date
US857379A Expired - Lifetime US3661058A (en) 1968-09-26 1969-09-12 Pump having a varying output

Country Status (3)

Country Link
US (1) US3661058A (en))
BE (1) BE721410A (en))
DE (2) DE6936370U (en))

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3933083A (en) * 1974-10-21 1976-01-20 General Signal Corporation Variable displacement cylindrical pump

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4744288A (en) * 1986-08-28 1988-05-17 Commercial Shearing, Inc. Axial piston pumps and motors
DE19902518C2 (de) * 1999-01-22 2003-04-10 Brueninghaus Hydromatik Gmbh Hydraulische Maschine, insbesondere Kolbenmaschine, mit einem Gehäuse und einer darin angeordneten Trennwand

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB426316A (en) * 1935-01-02 1935-04-01 Fritz Egersdoerfer Improvements in pumps
US2667862A (en) * 1952-04-12 1954-02-02 Jeffrey Mfg Co Variable volume hydraulic motor with pressure responsive volume control
US2733666A (en) * 1956-02-07 Axial piston pumps
US2888806A (en) * 1955-03-16 1959-06-02 Sundstrand Machine Tool Co Control system
CA645947A (en) * 1962-07-31 G. Freeman Frank Liquid fuel supply pumps for engines
US3116698A (en) * 1962-08-03 1964-01-07 Ingersoll Rand Co Reciprocating means
US3266434A (en) * 1964-04-10 1966-08-16 Webster Electric Co Inc Variable output pump
US3295457A (en) * 1964-03-06 1967-01-03 Oram Harold George Fluid pressure developing units
US3375756A (en) * 1965-02-06 1968-04-02 Hydraulica Hollerich Luxembour Multiple- or variable-speed motors notably hydraulic motors with monitoring system and its applications
US3426686A (en) * 1966-04-04 1969-02-11 Ulrich Mfg Co Pump

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733666A (en) * 1956-02-07 Axial piston pumps
CA645947A (en) * 1962-07-31 G. Freeman Frank Liquid fuel supply pumps for engines
GB426316A (en) * 1935-01-02 1935-04-01 Fritz Egersdoerfer Improvements in pumps
US2667862A (en) * 1952-04-12 1954-02-02 Jeffrey Mfg Co Variable volume hydraulic motor with pressure responsive volume control
US2888806A (en) * 1955-03-16 1959-06-02 Sundstrand Machine Tool Co Control system
US3116698A (en) * 1962-08-03 1964-01-07 Ingersoll Rand Co Reciprocating means
US3295457A (en) * 1964-03-06 1967-01-03 Oram Harold George Fluid pressure developing units
US3266434A (en) * 1964-04-10 1966-08-16 Webster Electric Co Inc Variable output pump
US3375756A (en) * 1965-02-06 1968-04-02 Hydraulica Hollerich Luxembour Multiple- or variable-speed motors notably hydraulic motors with monitoring system and its applications
US3426686A (en) * 1966-04-04 1969-02-11 Ulrich Mfg Co Pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3933083A (en) * 1974-10-21 1976-01-20 General Signal Corporation Variable displacement cylindrical pump

Also Published As

Publication number Publication date
DE6936370U (de) 1970-03-12
DE1946944A1 (de) 1970-04-02
BE721410A (en)) 1969-03-03

Similar Documents

Publication Publication Date Title
US8142170B2 (en) Radial piston pump
CN107288836B (zh) 轴向柱塞泵
KR880004228A (ko) 가변용량 사판식 압축기
GB831673A (en) Improvements relating to rotary cylinder barrel longitudinally reciprocating piston engines
US4800801A (en) Pump
US3661058A (en) Pump having a varying output
US2205913A (en) Pump
NO163628B (no) Fremgangsmaate og apparat for elektrolytisk fremstilling av magnesium.
US3238889A (en) Piston drive mechanism
US4865523A (en) Wobble plate compressor with variable displacement mechanism
US3981645A (en) Displaced piston machine
US3186352A (en) Variable displacement piston pump
US3747477A (en) Variable volume hydraulic apparatus
US3739691A (en) Fluid device
US3223042A (en) Multi-piston variable stroke pump
US2698585A (en) Radial piston-type hydraulic pump
US3584514A (en) Axial piston pump
US1920123A (en) Radial pump
US3868889A (en) Fluid device having means for aligning a cylinder barrel
USRE32373E (en) Fluid device having means for aligning a cylinder barrel
US6793471B2 (en) Fluid machine
US2452754A (en) Variable power transmission
US2816515A (en) Pumps
US6036448A (en) Fuel pump sealed in a bellows
US7556480B2 (en) Fluid pump