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WO2007052119A1 - Pompe - Google Patents

Pompe Download PDF

Info

Publication number
WO2007052119A1
WO2007052119A1 PCT/IB2006/003044 IB2006003044W WO2007052119A1 WO 2007052119 A1 WO2007052119 A1 WO 2007052119A1 IB 2006003044 W IB2006003044 W IB 2006003044W WO 2007052119 A1 WO2007052119 A1 WO 2007052119A1
Authority
WO
WIPO (PCT)
Prior art keywords
driving fluid
chamber
separator
discharge
fluid chamber
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.)
Ceased
Application number
PCT/IB2006/003044
Other languages
English (en)
Inventor
Donald Michael O'oconnor
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.)
Stratabolt Pty Ltd
Original Assignee
Stratabolt 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 Stratabolt Pty Ltd filed Critical Stratabolt Pty Ltd
Publication of WO2007052119A1 publication Critical patent/WO2007052119A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
    • 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
    • F04B43/06—Pumps having fluid drive
    • F04B43/073—Pumps having fluid drive the actuating fluid being controlled by at least one valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/54—Installations characterised by use of jet pumps, e.g. combinations of two or more jet pumps of different type

Definitions

  • This invention relates to a pump, and more specifically, but not exclusively, to a grout pump.
  • a commonly used type of pump which at least partially satisfies the requirements is a single-chamber single-acting reciprocating piston or diaphragm pump.
  • a widely-used example of this type of pump is the "Sindele" pump, which is described in South African patent no. 96/3402.
  • Pumps of this type require that the piston or diaphragm be returned to its original position after completion of the discharge stoke.
  • a disadvantage of the prior art pumps is that the return is done by hand. This manual operation is fatiguing, and may require considerable muscular strength from the operator, which restricts use of the pump.
  • a pump comprising: a housing; a separator within the housing dividing the housing into a material chamber and a driving fluid chamber, the separator being movable between a loading position and a discharge position; a discharge port from the material chamber; a material loading port for the material chamber; an inlet port to the driving fluid chamber; a venturi means; and a valve means for directing driving fluid into the driving fluid chamber through the inlet port to force the separator from its loading position to its discharge position thereby to discharge material through the delivery port from the material chamber, and for directing driving fluid through the venturi means to extract fluid from the driving fluid chamber to create a low pressure within the driving fluid chamber thereby to force the separator back to its loading position from its discharge position.
  • a pump comprising: a housing; a separator within the housing dividing the housing into a material chamber and a driving fluid chamber, the separator being movable between a loading position and a discharge position; a discharge port from the material chamber; a material loading port for the material chamber; an inlet port to the driving fluid chamber; an extractor means; and a valve means for directing driving fluid into the driving fluid chamber through the inlet port to force the separator from its loading position to its discharge position thereby to discharge material through the delivery port from the material chamber, and for directing driving fluid through the extractor means to extract fluid from the driving fluid chamber thereby to force the separator back to its loading position from its discharge position.
  • a venturi means comprises a conduit arranged to enable an increase in the velocity of fluid flowing through part of the conduit, resulting in a decrease in the fluid pressure at that part of the conduit.
  • the venturi means is a venturi or an extractor means.
  • the extractor means may be an ejector.
  • the housing may include two sections secured to one another by fastening means. The sections may be hemispherical, and the fastening means may be bolts and nuts.
  • the separator is preferably a diaphragm.
  • the diaphragm may be made of rubber.
  • the diaphragm is preferably clamped between the two sections of the housing.
  • the separator is a piston.
  • the valve means may include first and second valves.
  • the first valve is preferably in use connected to a driving fluid source, and can communicate with the second valve and the venturi means.
  • the second valve can preferably in use communicate with the first valve, the driving fluid chamber and the venturi means.
  • the first and second valves are thus preferably three-way valves. However, separately operated open/shut valves may also be used.
  • the driving fluid may be compressed air or water.
  • the material may be grout.
  • a method of operating a pump having a separator within a housing dividing the housing into a driving fluid chamber and a material chamber comprising the steps of: loading material into the material chamber; introducing driving fluid into the driving fluid chamber to force the separator from a loading position to a discharge position to discharge the material from the material chamber; and extracting fluid from the driving fluid chamber to create a low pressure within the driving fluid chamber thereby to force the separator back into its loading position.
  • a method of operating a pump having a separator within a housing dividing the housing into a driving fluid chamber and a material chamber comprising the steps of: loading material into the material chamber; introducing driving fluid into the driving fluid chamber to force the separator from a loading position to a discharge position to discharge the material from the material chamber; and extracting fluid from the driving fluid chamber thereby to force the separator back into its loading position.
  • fluid is extracted from the driving fluid chamber by connecting the driving fluid chamber to venturi means and discharging driving fluid through the venturi means.
  • Figure 1 shows a shows a diagrammatic cross-sectional side view of a first embodiment of a pump according to the invention.
  • FIGS 2a to 2c show diagrammatic views of the pump shown in Figure 1 its valves and venturi showing the pumping, return stroke and off positions, respectively.
  • Figure 3 shows a diagrammatic cross-sectional side view of a second embodiment of the pump according to the invention.
  • Figures 4a to 4c show diagrammatic views of the pump shown in Figure 3 its valves and venturi showing the pumping, return stroke and off positions, respectively.
  • a single-chamber single-acting reciprocating grout pump 10 has a housing 12 constructed from two hemispherical sections 14.1 and 14.2 with external flanges 16 on their equatorial planes. The two sections 14.1 and 14.2 are bolted together via their flanges 16 to form the housing 12. Inside the housing 12 is a flexible rubber diaphragm 18 shaped to fit snugly against the inner surface of the lower section 14.1 when the diaphragm 18 is in its loading position, which is shown in figure 1. The diaphragm 18 divides the inside of the housing 12 into a compressed air chamber 22 and a grout chamber 24.
  • the lower section 14.1 has a compressed air inlet port 26, with an external valve/venturi arrangement 28.
  • the upper section 14.2 has a grout loading port 30 and a grout discharge port 32.
  • valve arrangement 28 includes 3-way valves 34 and 36 and a venturi 38 with a throat 40.
  • a compressed air source (not shown) is connected via a conduit 42 to the 3-way valve 34.
  • the low pressure in the throat 40 extracts the air from the compressed air chamber 22, creating a low pressure which sucks the diaphragm 18 back to its starting position against the lower section 14.1.
  • the valves 34 and 36 then are positioned as shown in figure 2c, to shut off flow of compressed air.
  • FIG 3 there is a single-chamber single-acting reciprocating grout pump 110.
  • Like features with pump 10 are identified with like reference numerals.
  • Grout pump 110 has a housing 12 constructed from two hemispherical sections 14.1 and 14.2 with external flanges 16 on their equatorial planes. The two sections 14.1 and 14.2 are bolted together via their flanges 16 to form the housing 12. Inside the housing 12 is a flexible rubber diaphragm 18 shaped to fit snugly against the inner surface of the lower section 14.1 when the diaphragm 18 is in its loading position, which is shown in figure 3. The diaphragm 18 divides the inside of the housing 12 into a compressed air chamber 22 and a grout chamber 24.
  • the lower section 14.1 has a compressed air inlet port 26, with an external valve/ ejector arrangement 29.
  • the upper section 14.2 has a grout loading port 30 and a grout discharge port 32.
  • the valve arrangement 29 includes 3-way valves 34 and 36 and an ejector 39 with an inlet 41.
  • a compressed air source (not shown) is connected via a conduit 42 to the 3-way valve 34.
  • grout is loaded through the grout loading port 30, which is then closed.
  • the valves 34 and 36 are then positioned as shown in figure 4a.
  • Compressed air is introduced into the compressed air chamber 22, through the compressed air inlet port 26.
  • the diaphragm 18 is forced upwards by the compressed air to discharge the grout through the grout discharge port 32. At the completion of this stroke the diaphragm 18 is inverted and tight against the inner surface of upper section 14.2.
  • the grout loading port 30 is then opened again and the valves 34 and 36 are then switched to the positions shown in figure 4b.
  • the compressed air is routed through the ejector 39.
  • the compressed air chamber 22 of the pump 110 is connected to the inlet 41 of the ejector 39.
  • the air is extracted from the compressed air chamber 22, creating a low pressure which sucks the diaphragm 18 back to its starting position against the lower section 14.1.
  • the valves 34 and 36 then are positioned as shown in figure 4c, to shut off flow of compressed air.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Reciprocating Pumps (AREA)

Abstract

La présente invention concerne une pompe comprenant un carter, un séparateur à l’intérieur du carter qui divise ce dernier en une chambre de matière et une chambre de fluide moteur, ledit séparateur pouvant être déplacé entre une position de chargement et une position de déchargement, un orifice de déchargement de la chambre de matière, un orifice de chargement de matière pour la chambre de matière, un orifice d’entrée dans la chambre de fluide moteur, un moyen Venturi, et un moyen de vanne servant à diriger le fluide moteur dans la chambre de fluide moteur par l’orifice d’entrée afin de forcer le séparateur à passer de sa position de chargement à sa position de déchargement ce qui décharge la matière de la chambre de matière par l’orifice de décharge ; et afin de diriger le fluide moteur à travers le moyen Venturi afin d’extraire le fluide de la chambre de fluide moteur dans le but de créer une basse pression à l’intérieur de la chambre de fluide moteur faisant repasser le séparateur de sa position de déchargement à sa position de chargement.
PCT/IB2006/003044 2005-11-01 2006-10-30 Pompe Ceased WO2007052119A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ZA2005/08854 2005-11-01
ZA200508854 2005-11-01
ZA2006/1225 2006-02-10
ZA200601225 2006-02-10

Publications (1)

Publication Number Publication Date
WO2007052119A1 true WO2007052119A1 (fr) 2007-05-10

Family

ID=37686004

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2006/003044 Ceased WO2007052119A1 (fr) 2005-11-01 2006-10-30 Pompe

Country Status (1)

Country Link
WO (1) WO2007052119A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2734667A (en) * 1956-02-14 Grout pump
JPS5128203A (en) * 1974-09-04 1976-03-10 Mitsubishi Heavy Ind Ltd Ryutaikudo no danseifukuroryonohonpu
US3955901A (en) * 1973-10-23 1976-05-11 Hamilton Thomas W Membrane pump
US4021164A (en) * 1974-10-16 1977-05-03 Ab Piab Pump having reciprocating pumping means
US5265653A (en) * 1992-11-16 1993-11-30 Herlth August H Portable pneumatic liquid transfer assembly
EP0864752A2 (fr) * 1997-03-12 1998-09-16 Rosauto S.r.l. Unité de soupae de commande pour operation en continu d'un élement de pompage

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2734667A (en) * 1956-02-14 Grout pump
US3955901A (en) * 1973-10-23 1976-05-11 Hamilton Thomas W Membrane pump
JPS5128203A (en) * 1974-09-04 1976-03-10 Mitsubishi Heavy Ind Ltd Ryutaikudo no danseifukuroryonohonpu
US4021164A (en) * 1974-10-16 1977-05-03 Ab Piab Pump having reciprocating pumping means
US5265653A (en) * 1992-11-16 1993-11-30 Herlth August H Portable pneumatic liquid transfer assembly
EP0864752A2 (fr) * 1997-03-12 1998-09-16 Rosauto S.r.l. Unité de soupae de commande pour operation en continu d'un élement de pompage

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