US3847508A - Pneumatic pump - Google Patents

Pneumatic pump Download PDF

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Publication number
US3847508A
US3847508A US00355616A US35561673A US3847508A US 3847508 A US3847508 A US 3847508A US 00355616 A US00355616 A US 00355616A US 35561673 A US35561673 A US 35561673A US 3847508 A US3847508 A US 3847508A
Authority
US
United States
Prior art keywords
vessel
inlet pipe
tube
container
discharge pipe
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
US00355616A
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English (en)
Inventor
J Mowen
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.)
Smith and Loveless Inc
Original Assignee
Ecodyne Corp
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 Ecodyne Corp filed Critical Ecodyne Corp
Priority to US00355616A priority Critical patent/US3847508A/en
Priority to CA193,929A priority patent/CA986785A/en
Priority to AU66312/74A priority patent/AU472759B2/en
Priority to GB1169974A priority patent/GB1454843A/en
Priority to FR7411030A priority patent/FR2227448B1/fr
Priority to BE142890A priority patent/BE813352A/xx
Priority to DK228574AA priority patent/DK140571B/da
Priority to AT340674A priority patent/AT334742B/de
Priority to CH585274A priority patent/CH571656A5/xx
Application granted granted Critical
Publication of US3847508A publication Critical patent/US3847508A/en
Assigned to SMITH & LOVERLESS, INC., A CORP. OF KS. reassignment SMITH & LOVERLESS, INC., A CORP. OF KS. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ECODYNE CORPORATION
Assigned to MARINE MIDLAND BUSINESS LOANS, INC. reassignment MARINE MIDLAND BUSINESS LOANS, INC. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SMITH & LOVELESS, INC.
Anticipated expiration legal-status Critical
Assigned to SMITH & LOVELOSS INC. reassignment SMITH & LOVELOSS INC. RELEASE BY SECURED PARTY OF SECURITY AGREEMENT RECORDED AT REEL 5317 FRAME 138. Assignors: MARINE MIDLAND BUSINESS LOANS, INC.
Assigned to BOATMEN'S NATIONAL BANK OF ST. LOUIS, THE A NATIONAL BANKING ASSOCIATION reassignment BOATMEN'S NATIONAL BANK OF ST. LOUIS, THE A NATIONAL BANKING ASSOCIATION SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SMITH & LOVELESS, INC. A CORP. OF KANSAS
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
    • 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

Definitions

  • ABSTRACT A hydraulically controlled, pneumatically powered.
  • the pumpingunit for pumping liquids containing settleable solids.
  • the pumpingunit includes a'vessel having atop cover secured thereto in an air tight manner.
  • a vertical discharge pipe extends through the top cover into the vessel in an air tight manner.
  • a U-tube positioned within the vessel with a first end in fluid communication with the discharge pipe and a second end in communication with the interior of the vessel, serves to control the-operation of the pump.
  • An inlet pipe extendsthrough the bottom of the vessel, having an upper end positioned within the vessel at a level below the first end of the U-tube and above the curved portion of the tube, and a lower end positioned a short distance above the floor of a liquidcontainer.
  • An air inlet pipe extends through the top cover to supply compressed air into the'vesseL.
  • This invention relates to a hydraulically controlled, pneumatically powered pumping unit which is particularly suitable for pumping liquids containing settleable solids such as sewage sludge from a clarifier.
  • Another object is to provide a pumping unit capable of handling solids in the pumped liquid and tending to be self-cleaning if clogged.
  • a further object of the present invention is to provide a pumping unit for pumping liquids containing settleable solids which prevents solids from settling out of the pumped liquid and accumulating on surfaces near the inlet.
  • a still further object is to provide a hydraulically controlled, pneumatically powered pumping unit for pumping sewage sludge from a clarifier which has no moving parts and prevents the accumulation of solids on the walls and floor of the clarifier.
  • a pumping unit which includes a housing or vessel having a top cover secured thereto in an air tight manner.
  • a vertical discharge pipe extends through the top cover into the vessel in an air tight manner.
  • a U-tube positioned within the vessel with a first end in fluid communication with the discharge pipe and a second end in communication with the interior of the vessel, serves to control the operation of the pump.
  • An inlet pipe extends through the bottom of the vessel, having an upper end positioned within the vessel at a levelbelow the first end of the U-tube and above the curved portion of the tube, and a lower end positioned a short distance above the clarifier floor.
  • An air inlet pipe extends through the top cover to supply compressed air into the vessel and force liquid out the discharge pipe during the pumping phase. Liquid entering and exiting the U- tube automatically switches the pump between its filling phase, pressurizing phase, and pumping phase. During the pressurizing phase, liquid is forced down the inlet pipe and strikes the floor of the clarifier and the resulting turbulence agitates the solids near the inlet pipe, preventing them from accumulating on the floor and walls of the clarifier. This backflushing feature depends upon the upper end of the inlet pipe being below the first end of the U-tube.
  • FIGURE is an elevation of a somewhat diagrammatic representation of a pneumatic pumping unit constructed in accordance with the present invention, shown positioned within a clarifier tank.
  • a pneumatic pumping unit constructed in accordance with the present invention is designated generally at 10.
  • Pump 10 is shown positioned within a conventional clarifier tank 12 for pumping settleable solids such as sewage sludge therefrom.
  • settleable solids such as sewage sludge therefrom.
  • Pump 10 includes a closed cylindrical housing 14 having a top cover 16 and a bottom cover 18 secured thereto in an air tight relationship to form a vessel or tank 20.
  • Top cover 16 is secured to a connecting flange 22 welded to the upper edge of housing 14 in a suitable manner such as by bolts 24.
  • Bottom cover 18 is preferably welded to the lower edge of housing 14.
  • Discharge pipe 26 includes an upper section 28 which extends through and is suitably welded to an appropriate opening in cover 16 and a lower section 30 which is secured to upper section 28 by a connecting tee 32.
  • the lower end of section 30 extends into vessel 20 to a depth approximately equal to eleven-twelfths the height of vessel 20.
  • a U-tube or control tube 34 is formed within vessel 20 by substantially vertical pipe sections 36 and 38, substantially horizontal connecting nipples 40 and 42, and ninety degree elbows 44, 45, and 46.
  • Connecting elbow 44 is secured to tee 32 by connecting nipple 40 whose ends are respectively received therein.
  • the upper end 48 of pipe section 36 is received within elbow 44 and the lower end 50 of pipe section 36 extends downward for receipt within connecting elbow 45 positioned, at a level slightly above equal to the level of the lower endof section 30;
  • Elbow 45 is secured to connecting elbow 46 by connecting nipple 42 whose ends are respectively received therein.
  • the lower end 52 of pipe section 38 is received within elbow 46 and the upper end 54 of pipe section 38 extends upward to a level slightly above the lower end of upper section 28.
  • inlet pipe 60 extends through bottom cover 18 into vessel 20.
  • Inlet pipe 60 includes a coupling 62 which extends through an opening in bottom cover 18 and is welded about itsperiphery thereto.
  • An upper section 64 of inlet pipe 60 has a lower end 65 secured to coupling 62 and an upper end 66 which extends into vessel 20 to a level slightly below the level of tee 32.
  • a lower section 68 of inlet pipe 60 has an upper end 70 secured to coupling 62 and a lower end 72 which extends down ward into clarifier tank 12 to a level a short distance above the floor of tank 12.
  • an air inlet connection 75 passing through an appropriate opening in top cover 16.
  • An air inlet pipe 78 having a control valve 79 associated therewith, is secured at one end to connection 75 and at its other end to a conventional source of compressed air (not shown).
  • vessel 20 is completely submerged within clarifier tank 12 below the normal liquid level in the clarifier, indicated at A.
  • the vessel 20, being constructed in accordance with the hereinabove disclosure, is substantially air tight except for the continuous flow of pressurized air which-enters vessel 20 through air inlet pipe 78.
  • the flow rate is designed to be greater than the average rated flow of the pumping unit such that thehigh velocity of the liquid entering lower section 68 draws solid particles into vessel 20.
  • This filling part of the operating cycle continues until the liquid level inside vessel 20 reaches the level indicated at C.
  • the hereinabove disclosed hydraulically controlled, pneumatically powered pumping unit is a'simple device, capable of handling solids in the pumped liquid and tends to be selfcleaning if clogged. No moving parts are involved and no external control is required for operation, other than a supply of air under pressure.
  • the back flushing portion of the operating cycle and the rapid fill rate during the intake portion of the cycle keeps solids from settling out of the pumped fluid and accumulating on the surfaces near the inlet.
  • the back flushing feature requires that the top of inlet pipe 60 be below level C.
  • a hydraulically controlled and pneumatically powered pumping unit for pumping liquids containing settleable solids from a container comprising:
  • a vessel constructed in a substantially air tight V manner for receiving liquid thereinto, said vessel being positioned within said container below the normal liquid level in said container;
  • a gas inlet pipe extending into said vessel through an upper portion thereof for supplying gas thereinto to pressurize said vessel, said gas inlet pipe being in communication with a continuous source of pressurized gas;
  • a U-tube positioned within said vessel having a first end in fluid communication with said discharge pipe and a second end in fluid communication with an upper portion of said vessel, said U-tube serving to vent gas therethrough into said discharge pipe when not sealed by liquid confined therein and preventing the passage of gas therethrough when sealed by liquid confined therein;
  • an inlet pipe extending through a bottom portion of said vessel, said inlet pipe having an upper end positioned below said first end of said U-tube and a lower end positioned a short distance above the bottom of said container so as to cause agitation on the bottom of the container adjacent said lower end of said inlet pipe when during normal operation of the pump unit liquid is forced out of said vessel and said inlet pipe into said container.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Jet Pumps And Other Pumps (AREA)
US00355616A 1973-04-30 1973-04-30 Pneumatic pump Expired - Lifetime US3847508A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US00355616A US3847508A (en) 1973-04-30 1973-04-30 Pneumatic pump
CA193,929A CA986785A (en) 1973-04-30 1974-03-04 Pneumatic pump
AU66312/74A AU472759B2 (en) 1973-04-30 1974-03-06 Pneumatic pump
GB1169974A GB1454843A (en) 1973-04-30 1974-03-15 Pneumatically powered liquid pump
FR7411030A FR2227448B1 (da) 1973-04-30 1974-03-29
BE142890A BE813352A (fr) 1973-04-30 1974-04-05 Appareil de pompage de liquides contenant des particules solides pouvant se deposer
DK228574AA DK140571B (da) 1973-04-30 1974-04-25 Hydraulisk styret, pneumatisk drevet pumpeindretning.
AT340674A AT334742B (de) 1973-04-30 1974-04-25 Hydraulisch geregeltes, pneumatisch betriebenes pumpgerat
CH585274A CH571656A5 (da) 1973-04-30 1974-04-29

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00355616A US3847508A (en) 1973-04-30 1973-04-30 Pneumatic pump

Publications (1)

Publication Number Publication Date
US3847508A true US3847508A (en) 1974-11-12

Family

ID=23398128

Family Applications (1)

Application Number Title Priority Date Filing Date
US00355616A Expired - Lifetime US3847508A (en) 1973-04-30 1973-04-30 Pneumatic pump

Country Status (9)

Country Link
US (1) US3847508A (da)
AT (1) AT334742B (da)
AU (1) AU472759B2 (da)
BE (1) BE813352A (da)
CA (1) CA986785A (da)
CH (1) CH571656A5 (da)
DK (1) DK140571B (da)
FR (1) FR2227448B1 (da)
GB (1) GB1454843A (da)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5813839A (en) * 1997-05-27 1998-09-29 Newby; John C. Gas driven external combustion heat engine pump having the outlet pipe connected to a variable buoyant float
US20110049047A1 (en) * 2009-09-03 2011-03-03 Jeff Cumin Gas sparger for an immersed membrane
US8876089B2 (en) 2011-09-15 2014-11-04 Zenon Technology Partnership Method and apparatus to keep an aerator full of air
US9364805B2 (en) 2010-10-15 2016-06-14 General Electric Company Integrated gas sparger for an immersed membrane
US9463419B2 (en) 2012-01-09 2016-10-11 General Electric Company Pulse aeration for immersed membranes
US10189722B2 (en) * 2012-05-16 2019-01-29 David A. Potts Pressurized gas lifting and gas rejuvenation

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK162460C (da) * 1989-07-25 1992-03-23 Frandsen Aksel S Pumpeanordning til pumpning af vaeske ved hjaelp af trykluft

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU237594A1 (ru) * В. М. Милехин Пневматический насос
US1279580A (en) * 1917-05-26 1918-09-24 Pet Son Pump Company Air-pump for water-distributing systems.
US1499589A (en) * 1923-08-27 1924-07-01 Navin Frank Method and apparatus for extracting oil from wells

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU237594A1 (ru) * В. М. Милехин Пневматический насос
US1279580A (en) * 1917-05-26 1918-09-24 Pet Son Pump Company Air-pump for water-distributing systems.
US1499589A (en) * 1923-08-27 1924-07-01 Navin Frank Method and apparatus for extracting oil from wells

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5813839A (en) * 1997-05-27 1998-09-29 Newby; John C. Gas driven external combustion heat engine pump having the outlet pipe connected to a variable buoyant float
US20110049047A1 (en) * 2009-09-03 2011-03-03 Jeff Cumin Gas sparger for an immersed membrane
US9358505B2 (en) 2009-09-03 2016-06-07 General Electric Company Gas sparger for an immersed membrane
US9433903B2 (en) 2009-09-03 2016-09-06 Zenon Technology Partnership Gas sparger for a filtering membrane
US10471393B2 (en) 2009-09-03 2019-11-12 Bl Technologies, Inc. Gas sparger for an immersed membrane
US11219866B2 (en) * 2009-09-03 2022-01-11 Bl Technologies, Inc. Gas sparger for an immersed membrane
US9364805B2 (en) 2010-10-15 2016-06-14 General Electric Company Integrated gas sparger for an immersed membrane
US10173175B2 (en) 2010-10-15 2019-01-08 Bl Technologies, Inc. Integrated gas sparger for an immersed membrane
US8876089B2 (en) 2011-09-15 2014-11-04 Zenon Technology Partnership Method and apparatus to keep an aerator full of air
US9463419B2 (en) 2012-01-09 2016-10-11 General Electric Company Pulse aeration for immersed membranes
US10189722B2 (en) * 2012-05-16 2019-01-29 David A. Potts Pressurized gas lifting and gas rejuvenation

Also Published As

Publication number Publication date
ATA340674A (de) 1976-05-15
AU472759B2 (en) 1976-06-03
DK140571C (da) 1980-02-18
AT334742B (de) 1976-02-10
CH571656A5 (da) 1976-01-15
FR2227448A1 (da) 1974-11-22
AU6631274A (en) 1975-09-11
CA986785A (en) 1976-04-06
GB1454843A (en) 1976-11-03
DK140571B (da) 1979-10-01
BE813352A (fr) 1974-07-31
FR2227448B1 (da) 1978-11-17

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Legal Events

Date Code Title Description
AS Assignment

Owner name: SMITH & LOVERLESS, INC., A CORP. OF KS.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ECODYNE CORPORATION;REEL/FRAME:003924/0764

Effective date: 19811008

AS Assignment

Owner name: MARINE MIDLAND BUSINESS LOANS, INC., MISSOURI

Free format text: SECURITY INTEREST;ASSIGNOR:SMITH & LOVELESS, INC.;REEL/FRAME:005317/0138

Effective date: 19900401

AS Assignment

Owner name: SMITH & LOVELOSS INC.

Free format text: RELEASE BY SECURED PARTY OF SECURITY AGREEMENT RECORDED AT REEL 5317 FRAME 138.;ASSIGNOR:MARINE MIDLAND BUSINESS LOANS, INC.;REEL/FRAME:006032/0076

Effective date: 19920212

Owner name: BOATMEN S NATIONAL BANK OF ST. LOUIS, THE A NAT

Free format text: SECURITY INTEREST;ASSIGNOR:SMITH & LOVELESS, INC. A CORP. OF KANSAS;REEL/FRAME:006024/0068

Effective date: 19920212