US3693842A - Aerated powder pump - Google Patents
Aerated powder pump Download PDFInfo
- 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
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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.
Abstract
A pump for handling dry powdered material and including 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.
Description
United States Patent Cozzarin et a1.
[ AERATED-POWDER PUMP [72] Inventors: Virgil J. Cozzarin, Clarence; Francis C. Kappermann, Buffalo, both of N.Y.; Harry P. Kipple, Penn Hills,
[73] Assignee: Westinghouse Electric Corporation,
Pittsburgh, Pa.
[221 Filed: Aug. 17, 1970 Appl. No.: 64,443
415/72, 415/197, 417/900 '[5l] Int. CL. ..B65g 3/12 {581 Field of Search ..-...41S/72-75;
References Cited UNITED STATES PATENTS- 1,953,09'1 4/1934 Westberg etal ..-.302/49 2,355,774 8/1944 Baker ..302/50 2,966,860 1/1931 Maynard ..,...417/900 1,185,118' 5/1916 MacMichael ..259/147 14 1 Sept. 26, 1972 1,731,953 10/1929 Thomson ..259/147 1,765,544 6/1930 Schuster ....259/l48 3,073,250 l/l963 Musser ..418/48 3,499,389 3/1970 Seeberger et al ..418/48 3,572,646 3/1971 Kocher ..41 5/72 2,897,596 8/1959 Maurer ..417/900 Primary Examiner-C. J. Husar Attorney--F. Shapoe and L. P. 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.
5 Claims,'2 Drawing Figures Schuster ..259/147- PATENTED SW26 I973 3,693, 842
N (0 g E g 9' LL INVENTORS Virgil J. Cozzorin, Francis 0. Koppermonn 8 Ho P. Kip Ie ATTO EY AERATED POWDER PUMP BACKGROUND OF THE-INVENTION 1. Field of the Invention This invention relates to an aerated pump and more particularly, it pertains to a system for pumping and spraying powdered resin.
2. Description of the Prior Art Handling certain powdered materials such as flour,
powdered metals, clay, and certain resins has been satisfactory where the material is pumped through a totally enclosed system of pipes. Such materials may be pumped in a so-called progressive cavity pump similar to that disclosed in U.S. Pat. No. 3,280,753, in which a metal rotor is in engagement with a stator composed of flexible resilient material such as rubber.
Where the powdered material being pumped is composed of a blend of certain resins and of a catalyst or curing agent, a problem arises. It has been found that with such a blend of powdered materials, the progressive cavity pump is practically useless, (particularly at higher speeds), because the metal rotor creates friction with a rubber stator and the heat created by the friction causes the catalyst or curing agent to set up and harden the powdered resin in the blend, thereby causing the pump to become inoperative.
SUMMARY OF THE INVENTION In accordance with this invention it has been found that the foregoing problem may be overcome by providing 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.
BRIEF DESCRIPTION OF THE DRAWINGS 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.
DESCRIPTION OF THE PREFERRED EMBODIMENT 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.
As shown more particularly in FIG. 2, 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. For that purpose the 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.
As the resinous material passes from the hopper into the rotor chamber of the pump 14 and then through the spider 42 having openings 68 into the bore 46, and thence through the member 52 into the hose, 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.
The several parts including the inner pump lining 24, the collar 40, the adaptor 44, and the check valve 48, being composed of a material having a low adhesion coefficient such as polytetrafluoroethylene, contribute to the overall effect of preventing adherence of the resinous material to the surfaces of the pump. More particularly, the lining 24 provides a minimum of frictional resistance to the resinous powder as it; is propelled through the pump chamber. The lining 24 prevents the creation of any hot spots between the helical fin 30 and the stator which would otherwise cause the curing agent or catalyst, constituting part of the resinous powder, from setting up and hardening, causing ultimate pump failure.
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. During the blowing out period after the pump is shut down, 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.
Accordingly, 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.
It is understood that the above specification and drawings are merely exemplary and not in limitation of the invention.
What is claimed is:
1. 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;
2. rotor means of uniform diameter within said chamber for propelling said material from said inlet to said outlet;
3. 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;
4. gas injection means along the walls of said chamber for introducing gas into said chamber for maintaining said material in a fluidized state;
5. a check valve at the outlet end of said chamber for preventing the reverse flow of said material;
6. a fitting attached to said chamber over said outlet;
and
7. 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.
3. The apparatus of claim 2 wherein said bearing material is polytetrafluoroethylene.
4. The apparatus of claim 1 wherein the lining is composed of polytetrafluoroethylene.
5. The apparatus of claim 1 wherein the rotor means is a rotatable shaft having a helical fin extending to the lining of the chamber walls.
Claims (11)
1. 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; 2. rotor means of uniform diameter within said chamber for propelling said material from said inlet to said outlet; 3. 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; 4. gas injection means along the walls of said chamber for introducing gas into said chamber for maintaining said material in a fluidized state; 5. a check valve at the outlet end of said chamber for preventing the reverse flow of said material; 6. a fitting attached to said chamber over said outlet; and 7. gas injection means for introducing gas into said fitting.
2. The apparatus of claim 1 wherein a bearing of a material having a low coefficient of friction supports said rotor means at said outlet.
2. rotor means of uniform diameter within said chamber for propelling said material from said inlet to said outlet;
3. The apparatus of claim 2 wherein said bearing material is polytetrafluoroethylene.
3. 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;
4. The apparatus of claim 1 wherein the lining is composed of polytetrafluoroethylene.
4. gas injection means along the walls of said chamber for introducing gas into said chamber for maintaining said material in a fluidized state;
5. a check valve at the outlet end of said chamber for preventing the reverse flow of said material;
5. The apparatus of claim 1 wherein the rotor means is a rotatable shaft having a helical fin extending to the lining of the chamber walls.
6. a fitting attached to said chamber over said outlet; and
7. gas injection means for introducing gas into said fitting.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US6444370A | 1970-08-17 | 1970-08-17 |
Publications (1)
Publication Number | Publication Date |
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US3693842A true US3693842A (en) | 1972-09-26 |
Family
ID=22056014
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US64443A Expired - Lifetime US3693842A (en) | 1970-08-17 | 1970-08-17 | Aerated powder pump |
Country Status (6)
Country | Link |
---|---|
US (1) | US3693842A (en) |
BE (1) | BE771377A (en) |
CA (1) | CA929561A (en) |
ES (1) | ES393361A1 (en) |
FR (1) | FR2102311B1 (en) |
GB (1) | GB1353062A (en) |
Cited By (25)
Publication number | Priority date | Publication date | Assignee | Title |
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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 (en) * | 1988-02-13 | 1988-04-21 | Maschinen- Und Apparatebau August Tepe Gmbh, 2848 Vechta, De | |
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 (en) * | 2010-08-24 | 2010-12-15 | 新兴铸管股份有限公司 | Long-distance pulverized coal conveying equipment |
CN106005917A (en) * | 2016-06-16 | 2016-10-12 | 安徽省含山县锦华氧化锌厂 | Spiral zinc oxide conveying and collecting device |
RU211689U1 (en) * | 2021-10-07 | 2022-06-17 | Михаил Георгиевич Шпак | SYSTEM OF PNEUMATIC REGULATION OF UNIFORMITY OF LOADING OF PNEUMATIC PROPELLER PUMP |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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FR2519950A2 (en) * | 1981-01-06 | 1983-07-22 | Sprunck Jules | Anti blow back valve for powdered pneumatic furnace feed - uses top hung one way flap valve sited between end of screw and diffuser |
FR2511985A1 (en) * | 1981-08-25 | 1983-03-04 | Gogneau Achille | Air distributor for hopper outlet - uses archimedean base screw with compressed air and material venturis to increase discharge speed |
DE19704061A1 (en) * | 1997-02-04 | 1998-08-06 | Johannes Moeller Hamburg Engin | Helical conveyor charging pneumatic bulk powder or grain conveyor |
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-
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- 1970-08-17 US US64443A patent/US3693842A/en not_active Expired - Lifetime
-
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- 1971-06-14 GB GB2767871A patent/GB1353062A/en not_active Expired
- 1971-07-02 CA CA117185A patent/CA929561A/en not_active Expired
- 1971-07-16 ES ES393361A patent/ES393361A1/en not_active Expired
- 1971-08-17 BE BE771377A patent/BE771377A/en unknown
- 1971-08-17 FR FR7129981A patent/FR2102311B1/fr not_active Expired
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Cited By (33)
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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 |
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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 (en) * | 1988-02-13 | 1988-04-21 | Maschinen- Und Apparatebau August Tepe Gmbh, 2848 Vechta, De | |
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 (en) * | 2010-08-24 | 2010-12-15 | 新兴铸管股份有限公司 | Long-distance pulverized coal conveying equipment |
CN106005917A (en) * | 2016-06-16 | 2016-10-12 | 安徽省含山县锦华氧化锌厂 | Spiral zinc oxide conveying and collecting device |
RU211689U1 (en) * | 2021-10-07 | 2022-06-17 | Михаил Георгиевич Шпак | SYSTEM OF PNEUMATIC REGULATION OF UNIFORMITY OF LOADING OF PNEUMATIC PROPELLER PUMP |
RU215356U1 (en) * | 2022-08-04 | 2022-12-09 | Михаил Георгиевич Шпак | SYSTEM OF PNEUMATIC REGULATION OF UNIFORMITY OF LOADING OF AIR PROPELLER PUMP |
Also Published As
Publication number | Publication date |
---|---|
CA929561A (en) | 1973-07-03 |
FR2102311B1 (en) | 1976-10-29 |
GB1353062A (en) | 1974-05-15 |
FR2102311A1 (en) | 1972-04-07 |
BE771377A (en) | 1972-02-17 |
ES393361A1 (en) | 1973-09-16 |
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