US3560114A - Pump - Google Patents

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Publication number
US3560114A
US3560114A US794744*A US3560114DA US3560114A US 3560114 A US3560114 A US 3560114A US 3560114D A US3560114D A US 3560114DA US 3560114 A US3560114 A US 3560114A
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US
United States
Prior art keywords
pump
chambers
chamber
fluid
housing
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
US794744*A
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English (en)
Inventor
Bede Alfred Boyle
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Individual
Original Assignee
Individual
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Publication date
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Publication of US3560114A publication Critical patent/US3560114A/en
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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
    • F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
    • F04B43/10—Pumps having fluid drive
    • F04B43/113—Pumps having fluid drive the actuating fluid being controlled by at least one valve
    • 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

  • the pump has an elongated housing having a plurality of resilient expandible chambers or sacks axially aligned therein.
  • a chamber When a chamber is contracted it leaves an annular gap between itself and the interior walls of the housing and when expanded, seals sufliciently tightly against the smooth interior walls so that no valving action is necessary to prevent backflow of the pumped material within the housing.
  • This invention relates to pumps, and more particularly to so-called slurry pumps adapted for the transmission of high viscosity fluids.
  • a pump comprises, in com bination, at least two expandible pressure chambers enveloped by a close fitting relatively rigid conduit adapted to pass fluid to be pumped through the space between said chambers and the inner walls of said conduit, and a valve arrangement adapted to expand the chambers selectively and sequentially in the direction of the desired flow of said fluid.
  • FIG. 1 shows, schematically, the sequence of operations in a pump constructed in accordance with the invention
  • FIG. 2 shows, in front elevation and partly in section, one particular valve control system for said pump
  • FIG. 3 shows, in front elevation and partly in section, a detal of the arrangement of FIG. 2,
  • FIG. 4 shows, in side elevation and partly in section, a view along the line 44 of FIG. 2,
  • FIG. 5 shows, in plan, a view along the line 5-5 of FIG. 4,
  • FIG. 6 shows, in plan, a view along the line 6-6 of FIG. 4,
  • FIG. 7 shows, in plan, a view along the line 77 of FIG. 2,
  • FIG. 8 shows, in front elevation and partly in section, a modified form of the valve control shown in FIGS. 2 and 3, and
  • FIG. 9 shows, in plan, a view along the line 99 of FIG. 8.
  • each tube terminates within a respective chamber and wherein all the tubes lead to a selector unit 7 outside the conduit 8 so that pressure may be applied internally to respective selected chambers from an outside source of pressure as desired.
  • control of the chambers may be via a single tube (not shown) adapted to be rotated into register with individual ports each having a different angular disposition about the main axis of the chamber system, in each chamber.
  • any suitable means may be employed to expand the chambers, for example, compressed air, or oil delivered from a hydraulic accumulator.
  • the pump commences its operation when, say, the chamber 5 is first expanded by operating the control unit 7 as shown at a.
  • the most upstream chamber 1 is then expanded, followed by the expansion of chamber 2 and the simultaneous contraction of chamber 5 as shown at b.
  • the chamber 3 is then expanded whilst simultaneously contracting chambers 1 and 5 so that the fluid lying between chambers 1 and 3 tends to move downstream as shown at c.
  • This process is repeated sequentially through chambers 1 to 5 in the downstream direction and the continuous flow of at least part of the fluid 9 is ensured by a sufficiency of valve overlap so that one chamber is expanding whilst the next downstream adjacent chamber is contracting and so on.
  • the path of a typical particle of any solid material in said fluid will then be as shown in FIG. 1, in which levels a to 7 show the following respective degrees of valve travel:
  • a motor and suitable reduction gear housed within the casing 10 is adapted to rotate the shaft 11 and thus in turn the valve block 14 with respect to the inlet port plate 12 and the exhaust port plate 13.
  • the two lastmentioned plates are fixed with respect to the casing 15 and the support member 16 by means of the respective dowels 17 and 18.
  • the shaft 11 is attached to the valve block 14 by means of the key 19.
  • the respective inlet and exhaust ports 20 and 21 in the block 14 are brought into register at appropriate times with apertures such as 22 in the inlet port plate 12, thereby controlling the flow of a continuously available supply of fluid admitted through the port 23 down through the pipe 24, up through the pipe 25, and out through the exhaust port 26.
  • a selected one of the chambers, such as 1 may be caused to inflate via a port such as 20 by controlling the admission of control fluid thereto by means of an appropriate pair of pipes such as 24 and 25.
  • the valve block 14 is, of course, capable of being brought into registration with other apertures in the inlet port plate 12 and also the exhaust port plate 13 so as to bring the control fluid to the ports of other chambers in accordance with the cycle of events dictated by the rotation of said motor.
  • FIGS. 8 and 9 illustrate an arrangement suitable for use in heavy duty pumps.
  • a supply of control fluid is maintained under pressure in the pipe 27.
  • Each chamber in this case chamber 1 is provided with a port such as 28 which communicates with a pair of piston type valves 29 and 30 under the control of the respective springs 31 and 32.
  • An additional supply of control fluid may be admitted via the duct 33.
  • the pipe 27 is cut ofl from the chamber 1 because the port 34 is closed whilst the port 28 in the Wall 35 is in communication with the exhaust exit 36.
  • valve 29 and 30 Upon now applying fluid under pressure via 33 the valve 29 and 30, which are connected by the stem 37, will move down against the influence of the spring 32, thus closing the exhaust exit 36 and opening the port 34, so that it communicates with the port 28, and hence with the interior of the chamber 1, which begin to inflate.
  • the spring 32 (which over-rides the spring 31, which is merely present for the purpose of stability) pushes the valves 29 and 30 upwards again until the port 28 is again open to the exhaust exit 36 whilst also closing the port 34, and again the chamber 1 commences to deflate.
  • apparatus constructed in accordance with the invention comprises a positive displacement, self-priming, valveless pump of a kind which has a substantially unlimited total lift because individual pumping actions take place only through increments of the total head through which pumping occurs.
  • the increments may be made suitably small, depending upon the rate of flow required and the dimensions of the chambers and their spacing from the enveloping conduit.
  • the outer walls or surfaces of the chambers and also of the necessary relatively rigid joints therebetween should be given a smooth surface such as a coating of neoprene or other suitable substance which has both self-lubricating properties and is also substantially inert chemically with respect to the material to be pumped.
  • the discharge head is proportional to the operating pressure of the control fluid less a small amount which is the pressure required to fully expand the chambers which may, for example, be constructed from tough but flexible material such as rubber or the like.
  • the energy required to supply the fluid pressure is recoverable as suction lift as the chambers are opened to exhaust. To increase this suction lift the walls of the chambers may be prestressed on installation to give a higher stress of deformation.
  • the displacement of the pump can be varied simply by changing the speed of the valve timing means.
  • the pump may be completely submerged within liquids.
  • the construction details of the pump may be varied.
  • the valves may be mounted upon an air supply pipe which passes internally through each membrane, and preferably each valve is located adjacent to its membrane so that pressure losses are minimised.
  • Such valves may be operated by oil columns from a cam shaft timing device mounted above the level of the liquid in which the pump is immersed. This last-mentioned arrangement is especially applicable to large sized pumps where the air losses is distribution passages through the axial region of the pump could otherwise be excessive.
  • a pump for pumping slurries and high viscosity fluids comprising:
  • each chamber having flexible resilient walls being sufliciently expandible to sealingly engage said interior walls inflated and sufficiently resilient to leave an annular gap between said chamber and said wall when unpressured;
  • control means between said pressure source means and said passages to selectively expand said chamber in a predetermined sequence to pass fluid to be pumped sequentially through said annular gap from one chamber to the next.
  • a pump as claimed in claim 1, wherein said fluid under the influence of said control means comprises compressed air or oil delivered from a hydraulic accumulator.
  • a pump as claimed in claim 1 wherein said chambers are arranged in line so as to terminate in a streamlined protuberance pointing upstream.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US794744*A 1968-02-06 1969-01-28 Pump Expired - Lifetime US3560114A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU33166/68A AU442607B2 (en) 1968-02-06 1968-02-06 Pump

Publications (1)

Publication Number Publication Date
US3560114A true US3560114A (en) 1971-02-02

Family

ID=3720619

Family Applications (1)

Application Number Title Priority Date Filing Date
US794744*A Expired - Lifetime US3560114A (en) 1968-02-06 1969-01-28 Pump

Country Status (11)

Country Link
US (1) US3560114A (es)
AU (1) AU442607B2 (es)
BE (1) BE727945A (es)
CH (1) CH509510A (es)
DE (1) DE1905112A1 (es)
ES (1) ES363267A1 (es)
FR (1) FR2001430A1 (es)
GB (1) GB1258814A (es)
IL (1) IL31529A (es)
LU (1) LU57928A1 (es)
NL (1) NL6901464A (es)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3877838A (en) * 1973-08-09 1975-04-15 Daniel S J Choy Device for advancing material through a tube
US4311441A (en) * 1979-01-09 1982-01-19 Mantec Industries Limited Positive displacement device
US5040955A (en) * 1990-06-20 1991-08-20 Honeywell Inc. Peristaltic pump having inflatable pumping members
US5573384A (en) * 1994-04-28 1996-11-12 Kaltenbach & Voigt Gmbh & Co. Pump for conveying paste-like flowable materials
WO2014104897A1 (en) * 2012-12-24 2014-07-03 Sludge Pumping (Nz) Limited Sludge removal pump

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1093229B (it) * 1978-03-10 1985-07-19 Volpi Spa Perfezionamento ai moto-riduttori,in particolare per l'azionamento di ascensori montacarichi e simili,e relativi motto-riduttori perfezionati,con motore montato a sbalzo
DE3723463A1 (de) * 1987-07-16 1989-01-26 Karl Nagel Peristaltische verdraenger-pumpe fuer fluessige stoffe oder breiige gemenge mit pneumatischem oder hydraulischem antrieb
DE4106497A1 (de) * 1991-03-01 1992-09-03 Gerhard O Wirges Stromerzeuger
DE29518274U1 (de) * 1995-11-17 1997-03-13 Pleyer, Peter, 49152 Bad Essen Kolbenpumpe

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3877838A (en) * 1973-08-09 1975-04-15 Daniel S J Choy Device for advancing material through a tube
US4311441A (en) * 1979-01-09 1982-01-19 Mantec Industries Limited Positive displacement device
US5040955A (en) * 1990-06-20 1991-08-20 Honeywell Inc. Peristaltic pump having inflatable pumping members
US5573384A (en) * 1994-04-28 1996-11-12 Kaltenbach & Voigt Gmbh & Co. Pump for conveying paste-like flowable materials
WO2014104897A1 (en) * 2012-12-24 2014-07-03 Sludge Pumping (Nz) Limited Sludge removal pump

Also Published As

Publication number Publication date
FR2001430A1 (es) 1969-09-26
DE1905112A1 (de) 1969-08-21
BE727945A (es) 1969-07-16
LU57928A1 (es) 1969-05-22
IL31529A0 (en) 1969-03-27
ES363267A1 (es) 1970-12-16
IL31529A (en) 1971-10-20
AU442607B2 (en) 1973-11-07
GB1258814A (es) 1971-12-30
NL6901464A (es) 1969-08-08
AU3316668A (en) 1970-06-11
CH509510A (de) 1971-06-30

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