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US3424096A - Pumps - Google Patents

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Publication number
US3424096A
US3424096A US554821A US3424096DA US3424096A US 3424096 A US3424096 A US 3424096A US 554821 A US554821 A US 554821A US 3424096D A US3424096D A US 3424096DA US 3424096 A US3424096 A US 3424096A
Authority
US
United States
Prior art keywords
casing
pump
chambers
rod
rods
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
US554821A
Other languages
English (en)
Inventor
Cecil Hughes
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.)
Orbital Engine Co Pty Ltd
Original Assignee
Orbital Engine Co Pty Ltd
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 Orbital Engine Co Pty Ltd filed Critical Orbital Engine Co Pty Ltd
Application granted granted Critical
Publication of US3424096A publication Critical patent/US3424096A/en
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
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/0009—Special features
    • F04B43/0018—Special features the periphery of the flexible member being not fixed to the pump-casing, but acting as a valve
    • 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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/025—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms two or more plate-like pumping members in parallel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps
    • Y10S417/90—Slurry pumps, e.g. concrete

Definitions

  • each rod in the casing is protected by a flexible sleeve surrounding the rod and clamped between the rod and the casing.
  • the chambers defined by the diaphragms have similar mean volumes but the casing has tapering ends so that the end chambers to which the drive rods extend are longer than the intermediate chambers. Supporting plates prevent undue exure of each diaphragm during a delivery stroke.
  • This invention relates to pumps and especially to pumps for the movement of liquids. It is particularly concerned with arrangements in which the pumping effe-ct is achieved by applying a reciprocatory motion to a flexible plate or impulsion member.
  • An object of the invention is to provide a pump in which a relatively smooth throughput of liquid can be obtained despite the use of a reciprocating drive.
  • a further object of the invention is to provide a liquid pump that is a-ble to deal satisfactorily with liquids carrying suspended solids.
  • a pump in a pump according to the invention, at least three chambers are arranged in series in a casing, a dividing member between each successive pair of chambers being formed by a flexible plate and peripheral sealing means 'being provided on the casing inner wall to form seatings for the respective plates, the members being oppositely reciprocable by external drive means to vary the volumes of the chambers and each plate being displaceable from its seating to permit flow from the preceding to the following of its successive chambers.
  • each flexible plate may be carried by a rod or like supporting member projecting through a bearing aperture in the casing, the supporting member having a flexible sealing member, such as a tubular sleeve, secured between it and the casing to prevent leakage between the pump chambers and the bearing aperture.
  • FIG. l is a side View of a pump according to the invention and FIG. 2 is a sectional view on the line II-II in FIG. l.
  • the pump comprises a casing 2 formed lby three cast sections, thesections being designated 2a, 2b, 2c.
  • flexible discs 4, 6 can seat upon respective lips formed integrally with the casing sections 2a, 2b to define on their downstream sides sealing faces 8, 10 whereby the casing interior is divided 3,424,096 Patented Jan. 28, 1969 ice into inlet, intermediate and outlet chambers 12, 14, 16, respectively arranged in series between an inlet port 18 and an outlet port 20.
  • the discs are each displaceable upwardly from their seatings so that one-way ow between the inlet and outlet ports can be established.
  • Each disc 4, 6 is carried by a rod 22 axially guided in bearing tube 24 fixed to the casing by its flange 25, the disc being gripped between the flat supporting faces of upper and lower clamping plates 26, 27 by tightening nut 28 to secure it to the rod.
  • the two rods are coaxial and the discs 4, 6 and their sealing faces 8, 10 are circular in plan rform.
  • the ends of the rods 22 project from the casing and transmit the pump drive to the discs 4, 6.
  • the drive comprises an input shaft 30 carrying eccentrics 32 to which connecting rods 34 are journalled.
  • the outer ends of the connecting rods are journalled to respective beams 36 which are carried by lugs 37 of the casing through links 38 and which are in turn journalled to the ends of the rods 22.
  • each clam-ping plate 26 has a relatively small outside diameter so that a large area of the disc is unsupported when it is being liexed upwardly away from its seating.
  • each clamping plate 27 has a relatively large diameter to provide ample support for the disc when it is being held in a sealing position against its seating.
  • a non-return valve 40 is provided at the pump inlet but it is found in practice that this normally remains open due to operation of the ram effect and offers little or no obstruction to the flow entering the pump. It is of use, however, during priming of the pump, i.e. when air is being displaced from the pipelines to raise liquid into the pump. As a further precaution, a non-return valve 41 may also be arranged at the pump outlet.
  • each sleeve 42 is secured between each rod and its bearing tube.
  • collars 44, 46 are provided on the adjacent clamping plate and on the bearing tube respectively, and the sleeve 42 is sealingly clamped on the collars by hose clips 48.
  • the free length of each sleeve 42 has a large radial clearance with the adjacent rod and bearing tube so that it is possible to preclude rubbing of the sleeve during its deformation as the rod reciprocates.
  • the sleeves are so mounted that they are unstressed axially when the rods are at the mid-position illustrated. In this way they are subjected to both tension and compression forces and the peak forces experienced are minimised.
  • each bearing tube 24 and its rod 22 and associated parts can be assembled together prior to being secured to the pump casing, the sleeves can be secured also to the sub-assemblies in their axially unstressed condition.
  • the pumped medium is kept out of contact with any sliding surfaces of the pump mechanism.
  • the construction is therefore suitable, with an appropriate choice of materials for the interior parts, for pumping chemically active liquids such as oils and acids and also for pumping liquids with high percentages of semi-solids or solids in suspension, such as sewage, grain, gravel and sand.
  • the maintenance of ram elect offers a further advantage in giving the suspended material less opportunity to settle out.
  • the pump as illustrated and described has a relatively robust and simple construction that allows maintenance and the replacement of parts to be performed easily and quickly. As will be appreciated from the explanation of the operation of the pump, it is able to maintain a relatively smooth flow despite the use of a reciprocatory mechanism and it can be employed both under conditions of suction lift or of pressure head.
  • a liquid pump comprising in combination, a casing, means within said casing dividing the space therein into three chambers of similar volume and arranged in a series axially of the casing, inlet and outlet ports in the casing at the first and last of said chambers, each dividing means between each successive pair of chambers including a flexible impulsion member and a peripheral seating on the casing inner wall forming a sealing face for the outer region of an upstream of said member, carrier means for each member, each carrier means including a rod, a bearing in the casing slidably receiving said rod to permit its reciprocation axially of the casing, engagement means between an inner end of said rod and said member, the engagement means comprising a pair of clamping plates having planar supporting faces bearing on the member centrally of said peripheral seating, that plate engaging the upstream side of the member providing a substantially larger support area than the plate on the downstream side of the member, and drive means mounted externally of the pump casing to give said carrier means mutually opy posed reciprocations axially of the pump
  • a pump according to claim 1 wherein a flexible sealing member in the form of a tubular sleeve surrounds each rod and is sealingly secured at one end to the casing adjacent said bearing and at the other end to the carrier means adjacent the impulsion member whereby the bearing is isolated from the fluid in the pump interior.
  • each said bearing comprises a transversely extending mounting element forming attachment means to the casing and an axially extending rod-engaging member arranged to sealingly receive at a peripheral region said one end of the exible member, each flexible member thereby being capable of assembly with its carrier means before attachment of the carrier means to the pump casing.
  • a liquid pump comprising, in combination, a casing, dividing means within said casing dening at least three chambers arranged in series, said three serially arranged chambers have similar volumes and the two end ones of said chambers have cross-sectional areas that tape towards their mutually remote ends and are of greater length than their intermediate chamber, each dividing means between a successive pair of chambers including a flexible plate and peripheral sealing means xedly located on the casing inner wall to form a seating for said plate, bearing means in the casing at mutually remote regions thereof, a mounting for each plate being received in said bearing means to be displaceable axially of the casing, the two llexible plates dividing said three serially arranged chambers having their respective mounting means each extending axially through the length of an end one of said three chambers, a flexible sealing sleeve surrounding each said mounting and opposite ends of the sleeve being secured relative to said flexible plate and to the casing to extend substantially the axial length of the chambers, drive means for the pump being operatively

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
US554821A 1965-08-26 1966-06-02 Pumps Expired - Lifetime US3424096A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB36644/65A GB1159382A (en) 1965-08-26 1965-08-26 Improvements in Reciprocating Pumps

Publications (1)

Publication Number Publication Date
US3424096A true US3424096A (en) 1969-01-28

Family

ID=10389971

Family Applications (1)

Application Number Title Priority Date Filing Date
US554821A Expired - Lifetime US3424096A (en) 1965-08-26 1966-06-02 Pumps

Country Status (4)

Country Link
US (1) US3424096A (de)
DE (1) DE1528503A1 (de)
FR (1) FR1503605A (de)
GB (1) GB1159382A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2473646A1 (fr) * 1980-01-11 1981-07-17 Eta Sa Pompe volumetrique
US4473339A (en) * 1982-05-05 1984-09-25 Cecil Hughes Liquid pump
US20060073025A1 (en) * 2004-09-27 2006-04-06 Penn Valley Pump Company, Inc. Double disc pump with fixed housing block

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2102797A (en) * 1936-04-17 1937-12-21 Helmer Theodore Kenneth Piston rod protector
GB539247A (en) * 1940-03-13 1941-09-02 Robert Arthur Chalmers Improvements in or relating to diaphragm pumps
US2278832A (en) * 1939-01-09 1942-04-07 Richard T Cornelius Motor pump unit
US2833226A (en) * 1954-01-05 1958-05-06 Meux Albin De Laage De Pumps and compressors
US3162335A (en) * 1961-03-20 1964-12-22 American Radiator & Standard Adjustable liquid dispenser
US3164100A (en) * 1961-01-27 1965-01-05 Kelston Engineering Company Lt Fluid pumps

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2102797A (en) * 1936-04-17 1937-12-21 Helmer Theodore Kenneth Piston rod protector
US2278832A (en) * 1939-01-09 1942-04-07 Richard T Cornelius Motor pump unit
GB539247A (en) * 1940-03-13 1941-09-02 Robert Arthur Chalmers Improvements in or relating to diaphragm pumps
US2833226A (en) * 1954-01-05 1958-05-06 Meux Albin De Laage De Pumps and compressors
US3164100A (en) * 1961-01-27 1965-01-05 Kelston Engineering Company Lt Fluid pumps
US3162335A (en) * 1961-03-20 1964-12-22 American Radiator & Standard Adjustable liquid dispenser

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2473646A1 (fr) * 1980-01-11 1981-07-17 Eta Sa Pompe volumetrique
US4473339A (en) * 1982-05-05 1984-09-25 Cecil Hughes Liquid pump
US20060073025A1 (en) * 2004-09-27 2006-04-06 Penn Valley Pump Company, Inc. Double disc pump with fixed housing block
US7559753B2 (en) 2004-09-27 2009-07-14 Penn Valley Pump Company, Inc. Double disc pump with fixed housing block

Also Published As

Publication number Publication date
DE1528503A1 (de) 1970-12-23
GB1159382A (en) 1969-07-23
FR1503605A (fr) 1967-12-01

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