US3693842A - Aerated powder pump - Google Patents

Aerated powder pump Download PDF

Info

Publication number
US3693842A
US3693842A US64443A US3693842DA US3693842A US 3693842 A US3693842 A US 3693842A US 64443 A US64443 A US 64443A US 3693842D A US3693842D A US 3693842DA US 3693842 A US3693842 A US 3693842A
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US
United States
Prior art keywords
chamber
walls
outlet
pump
rotor
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
US64443A
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English (en)
Inventor
Virgil J Cozzarin
Francis C Kappermann
Harry P Kipple
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.)
Westinghouse Electric Corp
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Westinghouse Electric 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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Application granted granted Critical
Publication of US3693842A publication Critical patent/US3693842A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
    • B65G53/06—Gas pressure systems operating without fluidisation of the materials
    • B65G53/08—Gas pressure systems operating without fluidisation of the materials with mechanical injection of the materials, e.g. by screw
    • 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

  • Johns 1 71 ABSTRACT A pump for handling dry powdered material and ineluding a stator forming a pump chamber, a rotor within the chamber and having an external helical fin thereon, the chamber having a material inlet and an outlet and gas inlet means at spaced intervals along the stator for injecting pressurized gas into the chamber, whereby the powdered material is aerated as the material moves through the chamber from the inlet to the outlet.
  • the internal wall of the stator is preferably provided with a coating of polytetrafluoroetylene to minimize adhesion of the material to the stator wall.
  • This invention relates to an aerated pump and more particularly, it pertains to a system for pumping and spraying powdered resin.
  • the powdered material being pumped is composed of a blend of certain resins and of a catalyst or curing agent
  • the pump stator having an elongated cylindrical chamber and having a powder inlet and a powder outlet, the inner walls of the chamber being composed of a minimal friction material, a rotor within the pump chamber having a helical fin extending to the inner surfaceof the stator, gas injection means at spaced intervals along the length of the stator for injecting powderfluidizing gas into the chamber, and additional air injection means on the side of the powder outlet remote from the chamber for moving the powder through the pump.
  • FIG. 1 is an elevational view showing the pump; and FIG. 2 is an enlarged sectional view showing the pump stator, rotor, and powder outlet end of the stator.
  • the apparatus of the present invention is a pump assembly generally indicated at in FIG. 1. It includes a hopper 12, a pump 14, and a variable speed motor 16.
  • the exit end of the pump is preferably provided with a hose 18, the outer end of which is provided with a spray nozzle 20.
  • the pump 14 is an elongated cylindrical member having an outer casing 22 which together with an inner lining 24 forms a stator for a pump rotor 26.
  • the rotor which is propelled by the motor 16 through a shaft 28, is provided with a helical fin 30 so that the rotor 26 functions in a manner similar to an auger.
  • the outer peripheral portion of the fin 30 extends to and contacts the inner surface of the lining 24.
  • the rotor and fin may be composed of any rigid material. Such material may include a metal and is preferably composed of steel.
  • the right end portion of the rotor 26 is journaled in a brass collar 32 and includes a flange 34 to prevent longitudinal thrust of the rotor 26.
  • the brass collar 32 is seated within the open end portion of the casing 22 where it is retained by a closure 36.
  • a sealing collar 38 is disposed between the collar 32 and the inner liner 24.
  • the opposite end of the rotor 26 is joumaled in a collar 40 which is preferably composed of a low adhesion material such as polytetrafluoroethylene.
  • the collar 40 0 is disposed in a mounting member or spider 42, which is located within the outlet end of the pump 10 where it is retained in place by an adapter 44.
  • a central bore 46 of the adaptor 44 communicates with the chamber of the pump 14.
  • the end of the bore 46, remote from the spider 42, is provided with a check valve 48 which is pivotally mounted at 50 to permit the flow of powdered material to the left (as viewed in FIG. 2) and to prevent the reverse flow of the material into the pump stator.
  • valve 48 swings clockwise to an open (broken line) position 48a when sufficient pressure within the pump chamber is maintained. However, when pressurein the pump chamber drops below the pressure on the left side of the valve, the valve 48 moves counterclockwise to the closed (solid line) position.
  • the adaptor 44 is composed of a material having a low coefficient of adhesion such as polytetrafluoroethylene.
  • the exit end of the adaptor 44 is connected to'a member 52 having a funnel-like inner surface 54 and having a threaded end portion 56 to which the hose 18 is connected.
  • the member 52 may be composed of metal or of a material having a low coefficient of low adhesion such as polytetrafluoroethylene.
  • the pump assembly 10 including the hopper 12, the pump 14, the hose l8, and the spray nozzle 20 also includes means for aerating with air or other gas to circulate through the several parts for the purpose of fluffing or fluidizing the blended resinous material as it passes through the pump assembly.
  • the aerating means includes a source of pressurized air (not shown) or other gas (such as nitrogen) which is innocuous to the materials comprising the resinous powder. The pressure is maintained at about 4 pounds per square inch and the gas is applied at strategic areas throughout the pump assembly 10 through several spaced nozzles.
  • the nozzles include a nozzle 56 near the lower end of the fluidizing hopper 12, a nozzle 58 at the right end of the pump 14, and a plurality (for example) three nozzles 60 (FIG. 1) at spaced intervals along the pump 14.
  • Another nozzle 62 is provided in the adaptor 44 and communicates with the central bore 46.
  • Still another nozzle 64 is provided in the member 52 where it communicates with the chamber formed by the surface 54. All of the nozzles 56 to 62 are connected by similar gas conduits 66 to the common source of gas pressure. Accordingly, a gas is applied throughout the assembly so as to provide a continuous aerating condition to the powdered resinous material as it passes through the pump, and thereby prevent the powdered material from depositing and accumulating within the pump.
  • the gas entering the assembly maintains the resinous material in a substantially fluidized state.
  • a typical example of the resinous powder may include a blend of two solid epoxy resins, a yellow pigment, an amine curing agent or catalyst, and a silica filler.
  • a material having a low adhesion coefficient such as polytetrafluoroethylene
  • the nozzle 64 normally functions with the other nozzles 56 to 62 to fluidize the resinous powder as it passes through the member 52.
  • the nozzle 64 however is connected to a conduit 70 which is maintained in operation for sometime, such as upwards for one minute, after shutdown of the rest of the pump in order to blow all of the resinous powder out of the member 52, the hose l8, and the nozzle 20.
  • the check valve 48 returns to the closed (solid line) position, whereby air entering the member 52 via the nozzle 64 is prevented from blowing resinous material back into the bore 46 and the pump chamber.
  • the several air injection nozzles 56-64 cooperate with the rotor 26 and the several parts including the lining 24 to prevent the resinous powder from depositing and packing anywhere in the pump and particularly at the outlet end thereof as the powder is directed into the hose and out of the manually operated nozzle 20.
  • the pump is adapted to move about 1 pound of resinous powder in 1 minute, and has an average output of about 6 pounds in 10 minutes.
  • An apparatus for propelling a dry powdered resinous material comprising 1. an elongated cylindrical stator chamber having internal walls and a powdered material inlet and outlet;
  • a liner lining the walls of said chamber, said liner being of a material having a low coefficient of friction, and said liner being interposed between said rotor means and said chamber walls so as to prevent all contact between said rotor means and said chamber walls;
  • gas injection means along the walls of said chamber for introducing gas into said chamber for maintaining said material in a fluidized state
  • gas injection means for introducing gas into said 2. l l i a pparatus of claim 1 wherein a bearing of a material having a low coefficient of friction supports said rotor means at said outlet.
  • the rotor means is a rotatable shaft having a helical fin extending to the lining of the chamber walls.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Pumps (AREA)
  • Air Transport Of Granular Materials (AREA)
US64443A 1970-08-17 1970-08-17 Aerated powder pump Expired - Lifetime US3693842A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US6444370A 1970-08-17 1970-08-17

Publications (1)

Publication Number Publication Date
US3693842A true US3693842A (en) 1972-09-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US64443A Expired - Lifetime US3693842A (en) 1970-08-17 1970-08-17 Aerated powder pump

Country Status (6)

Country Link
US (1) US3693842A (enExample)
BE (1) BE771377A (enExample)
CA (1) CA929561A (enExample)
ES (1) ES393361A1 (enExample)
FR (1) FR2102311B1 (enExample)
GB (1) GB1353062A (enExample)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3951576A (en) * 1974-09-23 1976-04-20 Lofquist Jr Alden A Rotary diaphragm pump
US3963608A (en) * 1973-07-31 1976-06-15 Azo-Maschinenfabrik Adolf Zimmermann Apparatus for the treatment of synthetic resin powder
US4211506A (en) * 1977-04-22 1980-07-08 Chemische Werke Huls Aktiengesellschaft Method and apparatus for the metered conveying of pulverulent solids
US4343416A (en) * 1977-10-25 1982-08-10 General Electric Company Container for nuclear fuel powders
WO1984000948A1 (en) * 1982-09-02 1984-03-15 David J Miller Apparatus and method for unloading bulk materials
US4552490A (en) * 1983-04-07 1985-11-12 Foster Wheeler Energy Corporation Solids feed control valve assembly
US4711607A (en) * 1985-10-22 1987-12-08 Coalair Systems High speed auger venturi system and method for conveying bulk materials
US4738350A (en) * 1982-09-02 1988-04-19 Miller Formless Co., Inc. Apparatus for unloading bulk materials
DE8801881U1 (de) * 1988-02-13 1988-04-21 Maschinen- und Apparatebau August Tepe GmbH, 2848 Vechta Austragsvorrichtung zum Austragen von Baustoffen
US4830585A (en) * 1987-07-29 1989-05-16 Ruyle Phillip L Pumping system
US4881862A (en) * 1987-09-30 1989-11-21 Jenike & Johanson, Inc. Screw seal
US5122038A (en) * 1990-02-13 1992-06-16 Inco Limited High density grout pump
US5191966A (en) * 1982-09-02 1993-03-09 Miller Formless Co., Inc. Apparatus and method for unloading bulk materials
US6013140A (en) * 1997-07-28 2000-01-11 Simoneaux; Bret Laser hardening of screw forms
US6155751A (en) * 1997-12-11 2000-12-05 Ecotech Systems International, Ltd. Flow development chamber for creating a vortex flow and a laminar flow
US6224297B1 (en) * 1998-05-14 2001-05-01 Tmo Enterprises Limited Method and apparatus for use in conveying material
US6439834B1 (en) * 1998-10-13 2002-08-27 Arthur Whiting Oil field tool
US6659118B2 (en) 2001-12-04 2003-12-09 Ecotechnology, Ltd. Flow development chamber
US20040074534A1 (en) * 2001-12-04 2004-04-22 Ecotechnology, Ltd. Flow development chamber
US20050000581A1 (en) * 2001-12-04 2005-01-06 Lane Darin L. Axial input flow development chamber
US20080131214A1 (en) * 2005-01-26 2008-06-05 Claus Krebs Method and apparatus for pneumatically conveying bulk material which does not flow readily
US20080175675A1 (en) * 2006-11-22 2008-07-24 Ensentech, Inc.; Low-pressure, air-based, particulate materials transfer apparatus and method
CN101913503A (zh) * 2010-08-24 2010-12-15 新兴铸管股份有限公司 一种远距离输送煤粉的设备
CN106005917A (zh) * 2016-06-16 2016-10-12 安徽省含山县锦华氧化锌厂 一种螺旋式氧化锌输送收集装置
RU211689U1 (ru) * 2021-10-07 2022-06-17 Михаил Георгиевич Шпак Система пневматической регуляции равномерности загрузки пневмовинтового насоса

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2519950A2 (fr) * 1981-01-06 1983-07-22 Sprunck Jules Dispositif de transport pneumatique de matiere pulverulente
FR2511985A1 (fr) * 1981-08-25 1983-03-04 Gogneau Achille Distributeur de produits
DE19704061A1 (de) * 1997-02-04 1998-08-06 Johannes Moeller Hamburg Engin Vorrichtung zum Einspeisen von pulverförmigem Gut in eine pneumatische Förderleitung

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1185118A (en) * 1911-08-04 1916-05-30 Concrete Mixing And Conveying Company Method of mixing and transporting concrete.
US1506089A (en) * 1919-12-06 1924-08-26 Karl R Schuster Concrete mixer and conveyer
US1731953A (en) * 1926-08-16 1929-10-15 Thomson Peter Mixer and conveyer
US1765544A (en) * 1925-11-03 1930-06-24 Karl R Schuster Mixing machine
US1953091A (en) * 1932-06-08 1934-04-03 Gustave Edward Westberg Concrete conveying and mixing machine
US2355774A (en) * 1941-11-29 1944-08-15 Fuller Co Apparatus for conveying pulverized material
US2897596A (en) * 1958-01-03 1959-08-04 Weber Dental Mfg Company Fluid-driven dental handpiece construction
US2966860A (en) * 1957-04-03 1961-01-03 Lobee Pump & Machinery Co Pump for corrosive fluids
US3073250A (en) * 1960-06-20 1963-01-15 United Shoe Machinery Corp Fluid device
US3499389A (en) * 1967-04-19 1970-03-10 Seeberger Kg Worm pump
US3572646A (en) * 1967-04-17 1971-03-30 Heinz Kocher Apparatus for transforming and mixing deformable media

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1185118A (en) * 1911-08-04 1916-05-30 Concrete Mixing And Conveying Company Method of mixing and transporting concrete.
US1506089A (en) * 1919-12-06 1924-08-26 Karl R Schuster Concrete mixer and conveyer
US1765544A (en) * 1925-11-03 1930-06-24 Karl R Schuster Mixing machine
US1731953A (en) * 1926-08-16 1929-10-15 Thomson Peter Mixer and conveyer
US1953091A (en) * 1932-06-08 1934-04-03 Gustave Edward Westberg Concrete conveying and mixing machine
US2355774A (en) * 1941-11-29 1944-08-15 Fuller Co Apparatus for conveying pulverized material
US2966860A (en) * 1957-04-03 1961-01-03 Lobee Pump & Machinery Co Pump for corrosive fluids
US2897596A (en) * 1958-01-03 1959-08-04 Weber Dental Mfg Company Fluid-driven dental handpiece construction
US3073250A (en) * 1960-06-20 1963-01-15 United Shoe Machinery Corp Fluid device
US3572646A (en) * 1967-04-17 1971-03-30 Heinz Kocher Apparatus for transforming and mixing deformable media
US3499389A (en) * 1967-04-19 1970-03-10 Seeberger Kg Worm pump

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3963608A (en) * 1973-07-31 1976-06-15 Azo-Maschinenfabrik Adolf Zimmermann Apparatus for the treatment of synthetic resin powder
US3951576A (en) * 1974-09-23 1976-04-20 Lofquist Jr Alden A Rotary diaphragm pump
US4211506A (en) * 1977-04-22 1980-07-08 Chemische Werke Huls Aktiengesellschaft Method and apparatus for the metered conveying of pulverulent solids
US4343416A (en) * 1977-10-25 1982-08-10 General Electric Company Container for nuclear fuel powders
US5191966A (en) * 1982-09-02 1993-03-09 Miller Formless Co., Inc. Apparatus and method for unloading bulk materials
US4738350A (en) * 1982-09-02 1988-04-19 Miller Formless Co., Inc. Apparatus for unloading bulk materials
US5351805A (en) * 1982-09-02 1994-10-04 Miller Formless Co. Inc. Method and apparatus for unloading bulk materials
WO1984000948A1 (en) * 1982-09-02 1984-03-15 David J Miller Apparatus and method for unloading bulk materials
US4552490A (en) * 1983-04-07 1985-11-12 Foster Wheeler Energy Corporation Solids feed control valve assembly
US4711607A (en) * 1985-10-22 1987-12-08 Coalair Systems High speed auger venturi system and method for conveying bulk materials
US4830585A (en) * 1987-07-29 1989-05-16 Ruyle Phillip L Pumping system
US4881862A (en) * 1987-09-30 1989-11-21 Jenike & Johanson, Inc. Screw seal
DE8801881U1 (de) * 1988-02-13 1988-04-21 Maschinen- und Apparatebau August Tepe GmbH, 2848 Vechta Austragsvorrichtung zum Austragen von Baustoffen
US5122038A (en) * 1990-02-13 1992-06-16 Inco Limited High density grout pump
US6013140A (en) * 1997-07-28 2000-01-11 Simoneaux; Bret Laser hardening of screw forms
US6749374B1 (en) 1997-12-11 2004-06-15 Ecotechnology, Ltd. Flow development chamber for creating a vortex flow and a laminar flow
US6155751A (en) * 1997-12-11 2000-12-05 Ecotech Systems International, Ltd. Flow development chamber for creating a vortex flow and a laminar flow
US6224297B1 (en) * 1998-05-14 2001-05-01 Tmo Enterprises Limited Method and apparatus for use in conveying material
US6439834B1 (en) * 1998-10-13 2002-08-27 Arthur Whiting Oil field tool
US20070028976A1 (en) * 2001-12-04 2007-02-08 Ecotechnology, Ltd. Flow development chamber
US7650909B2 (en) 2001-12-04 2010-01-26 Spiroflo, Inc. Flow development chamber
US20050000581A1 (en) * 2001-12-04 2005-01-06 Lane Darin L. Axial input flow development chamber
US7066207B2 (en) 2001-12-04 2006-06-27 Ecotechnology, Ltd. Flow development chamber
US7082955B2 (en) 2001-12-04 2006-08-01 Ecotechnology, Ltd. Axial input flow development chamber
US6659118B2 (en) 2001-12-04 2003-12-09 Ecotechnology, Ltd. Flow development chamber
US20040074534A1 (en) * 2001-12-04 2004-04-22 Ecotechnology, Ltd. Flow development chamber
US8480336B2 (en) * 2005-01-26 2013-07-09 Lanxess Deutschland Gmbh Method and apparatus for pneumatically conveying bulk material which does not flow readily
US20080131214A1 (en) * 2005-01-26 2008-06-05 Claus Krebs Method and apparatus for pneumatically conveying bulk material which does not flow readily
US20080175675A1 (en) * 2006-11-22 2008-07-24 Ensentech, Inc.; Low-pressure, air-based, particulate materials transfer apparatus and method
CN101913503A (zh) * 2010-08-24 2010-12-15 新兴铸管股份有限公司 一种远距离输送煤粉的设备
CN106005917A (zh) * 2016-06-16 2016-10-12 安徽省含山县锦华氧化锌厂 一种螺旋式氧化锌输送收集装置
RU211689U1 (ru) * 2021-10-07 2022-06-17 Михаил Георгиевич Шпак Система пневматической регуляции равномерности загрузки пневмовинтового насоса
RU215356U1 (ru) * 2022-08-04 2022-12-09 Михаил Георгиевич Шпак Система пневматической регуляции равномерности загрузки пневмовинтового насоса

Also Published As

Publication number Publication date
FR2102311B1 (enExample) 1976-10-29
FR2102311A1 (enExample) 1972-04-07
GB1353062A (en) 1974-05-15
CA929561A (en) 1973-07-03
BE771377A (fr) 1972-02-17
ES393361A1 (es) 1973-09-16

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