US2857852A - Compressed air pump with rotary commutator - Google Patents

Compressed air pump with rotary commutator Download PDF

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Publication number
US2857852A
US2857852A US530683A US53068355A US2857852A US 2857852 A US2857852 A US 2857852A US 530683 A US530683 A US 530683A US 53068355 A US53068355 A US 53068355A US 2857852 A US2857852 A US 2857852A
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United States
Prior art keywords
chambers
compressed air
pump
distributor
chamber
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Expired - Lifetime
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US530683A
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English (en)
Inventor
Carignani Ernesto
Ghelardoni Alba Corda Nei
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Individual
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Individual
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    • 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
    • F04F1/00—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped
    • F04F1/06—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped the fluid medium acting on the surface of the liquid to be pumped
    • F04F1/10—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped the fluid medium acting on the surface of the liquid to be pumped of multiple type, e.g. with two or more units in parallel

Definitions

  • the present invention relates to a pump for the lifting of liquids in general and comprises two closed chambers immersed in the liquid to be lifted each chamber being provided with a suction valve and with a delivery valve, said chambers being put alternately in communication with a feed piping for compressed air and with a discharge piping, characterized in that between the source of compressed air and the chambers there is interposed a rotary distributor adapted to reverse periodically the connection of said source with the piping that opens into one of the two chambers and the connection of the piping opening into the other chamber with the discharge of compressed air.
  • the source of compressed air consists of an air compressor whose suction and compression valves are connected through the rotary distributor to the two pipings opening respectively into the two immersed chambers.
  • the pump works in closed cycle with the advantage of sucking at every reversal previously compressed air and, hence, of increasing the efficiency of the pump.
  • the apertures of the distributor are arranged in such a manner as to allow an anticipation in the introduction of the compressed air so that the compressed air is introduced at first into one chamber prior to terminating introduction into the other chamber, with the advantage of ensuring continuity in the flow of the pumped liquid.
  • the distributor may be kept in rotation either by the very motor that actuates the compressor or by an independent compressed fluid (air or water) motor. The number of revolutions of the distributor is adjusted in such a manner that the commutation of the connections takes place at the time of maximum emptying and filling of the chambers respectively.
  • the two immersed chambers may be arranged side by side or superimposed according to the diameter of the pit wherein the pump is installed.
  • Fig. 1 represents diagrammatically the pump in the case of the two chambers being accommodated side by side;
  • Fig. 2 represents diagrammatically the pump in the case of the two chambers being superimposed
  • Fig. 3 represents an axial section of the distributor according to line A'-A of Fig. 4 and Fig. 4 represents a cross-section of the distributor along lines B-B of Fig. 3.
  • the pump illustrated in Figures 1 and 2, is constituted essentially by two chambers 1 and 2 immersed into the liquid to be lifted, each of said chambers being provided with a suction valve 3 and connected to the collecting pipe of the pumped liquid 4 by means of an internal pipe 5 provided with a delivery valve 6.
  • the two chambers are moreover connected at their upper ends with the pipes 7-7' connected in turn with the distributor 8 which in turn is connected with the aspiration conduit 9 and compression conduit 10 of the air compressor 11 actuated by the motor M.
  • the distributor is constituted, as can be seen in Figures 23 and 4, by a hollow cylindrical body 12 closed by two covers 13-14 and provided with side channels 15, 16, 17 and 18 which are arranged parallel to the axis and staggered by with respect to each other.
  • a jacket 19 is introduced and is provided with four apertures 2021--22-23 in a first upper plane and with four apertures identical to the former ones in a lower plane, such as the aperture 23' shown in Fig. 3; said apertures putting the respective side channels in communication with the inside of the jacket, wherein there revolves in sealed condition the cylinder 24 in which there are provided two channels 25 and 26 opposite each other and placed one in register with the apertures of the upper plane and the other in register with the apertures of the lower plane.
  • Each of said channels has a nearly rectangular cross-section with their two outlets arranged at 90 in respect to each other.
  • the cylinder 24 may be rotated either by connecting its shaft 27, through a worm and helical gear reducer, to the shaft of the compressor, or by means of an independent motor.
  • the pump operates in the following manner.
  • one of the chambers 1 (or 2) is put in communication with the compressed air conduit 10 coming from the compressor while the other one is put in communication with the suction conduit 9 of said compressor.
  • a pump of the immersion type comprising two closed chambers immersed in the liquid to be pumped, each chamber having an inlet valve adapted to be opened to permit entry of the liquid into the chambers, an outlet conduit means connected to the chambers and including an outlet valve means for each of the chambers, a compressor means operatively connected with a source of fluid to be compressed, conduit means for the compressed fluid connecting the compressor means with the chambers, :a rotary distributor operatively connected in the conduit, means so as to alternately connect the chambers with the pressure and suction sides of the compressor means and alternately effect a pressure in one chamber and force the liquid in such chamber through the outlet conduit means and effect a suction in the other chamber to open the inlet valve and draw the liquid in the cham her, said distributor including a hollow cylindrical body provided with four radially outstanding collecting channels arranged parallel to the axis of the body and spaced approximately 90 apart from each other, said conduit means comprising a first pair of conduits connected to the compressor means and to two of the channels and a second pair of conduits connected to

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • External Artificial Organs (AREA)
US530683A 1954-11-16 1955-08-26 Compressed air pump with rotary commutator Expired - Lifetime US2857852A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT337079X 1954-11-16

Publications (1)

Publication Number Publication Date
US2857852A true US2857852A (en) 1958-10-28

Family

ID=27272914

Family Applications (1)

Application Number Title Priority Date Filing Date
US530683A Expired - Lifetime US2857852A (en) 1954-11-16 1955-08-26 Compressed air pump with rotary commutator

Country Status (5)

Country Link
US (1) US2857852A (it)
AT (1) AT192760B (it)
CH (1) CH337079A (it)
FR (1) FR1163816A (it)
GB (1) GB819064A (it)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3058432A (en) * 1960-10-31 1962-10-16 Crossley Machine Company Inc Hot liquid metal pumps
US3804556A (en) * 1972-09-28 1974-04-16 Dow Chemical Co Slurry pump
US4307525A (en) * 1979-08-16 1981-12-29 Amtec Development Company Pneumatic-hydraulic pump dredge
US4353174A (en) * 1980-08-11 1982-10-12 Amtec Development Company Electronic control system for pneumatic-hydraulic pump dredge

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2686378B1 (fr) * 1992-01-16 1995-07-21 Pastisson Marsault Jacques Groupe autonome pneumatique de pompage a surverse air/eau.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US533226A (en) * 1895-01-29 Liquid-raising apparatus
US1096597A (en) * 1913-03-19 1914-05-12 William A Bruton Pumping system.
US1744002A (en) * 1924-11-24 1930-01-14 Robert V Price Controlling valve for pumps

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US533226A (en) * 1895-01-29 Liquid-raising apparatus
US1096597A (en) * 1913-03-19 1914-05-12 William A Bruton Pumping system.
US1744002A (en) * 1924-11-24 1930-01-14 Robert V Price Controlling valve for pumps

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3058432A (en) * 1960-10-31 1962-10-16 Crossley Machine Company Inc Hot liquid metal pumps
US3804556A (en) * 1972-09-28 1974-04-16 Dow Chemical Co Slurry pump
US4307525A (en) * 1979-08-16 1981-12-29 Amtec Development Company Pneumatic-hydraulic pump dredge
US4353174A (en) * 1980-08-11 1982-10-12 Amtec Development Company Electronic control system for pneumatic-hydraulic pump dredge

Also Published As

Publication number Publication date
AT192760B (de) 1957-11-11
FR1163816A (fr) 1958-10-01
GB819064A (en) 1959-08-26
CH337079A (it) 1959-03-15

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