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EP1511575B1 - Pulverisateur de texture a debit reglable equipe d'une pompe peristaltique - Google Patents

Pulverisateur de texture a debit reglable equipe d'une pompe peristaltique Download PDF

Info

Publication number
EP1511575B1
EP1511575B1 EP03737034A EP03737034A EP1511575B1 EP 1511575 B1 EP1511575 B1 EP 1511575B1 EP 03737034 A EP03737034 A EP 03737034A EP 03737034 A EP03737034 A EP 03737034A EP 1511575 B1 EP1511575 B1 EP 1511575B1
Authority
EP
European Patent Office
Prior art keywords
sprayer
tubing
attached
hose
couplings
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
EP03737034A
Other languages
German (de)
English (en)
Other versions
EP1511575A1 (fr
EP1511575A4 (fr
Inventor
Robert Gundersen
James Schroeder
David Thompson
Dale Johnson
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.)
Graco Minnesota Inc
Original Assignee
Graco Minnesota Inc
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 Graco Minnesota Inc filed Critical Graco Minnesota Inc
Publication of EP1511575A1 publication Critical patent/EP1511575A1/fr
Publication of EP1511575A4 publication Critical patent/EP1511575A4/fr
Application granted granted Critical
Publication of EP1511575B1 publication Critical patent/EP1511575B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2489—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device an atomising fluid, e.g. a gas, being supplied to the discharge device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/0403—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material
    • B05B9/042—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material with peristaltic pumps
    • 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
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/06—Mobile combinations
    • 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
    • F04B41/00—Pumping installations or systems specially adapted for elastic fluids
    • F04B41/06—Combinations of two or more pumps
    • 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
    • F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
    • F04B43/1215—Machines, pumps, or pumping installations having flexible working members having peristaltic action having no backing plate (deforming of the tube only by rollers)
    • 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
    • F04B2205/00—Fluid parameters
    • F04B2205/09—Flow through the pump

Definitions

  • Texture sprayers have traditionally ranged from simple guns having top-mounted hoppers (hopper guns) to progressive cavity pumps which can pump large amounts of material substantial distances at substantial cost and weight.
  • Prior art peristaltic pumps are provided with a rotor having two (or more) rollers, the rotor being capable of rotation in either direction while a tube or hose is stretched across a distance. This creates kinks or closures in the tube at the points of roller contact. As the rotor revolves, the kinks travel with the rollers providing a positive displacement of the fluid contained between the kinks. Most such pumps provide a follower plate which sandwiches the hose between itself and the rollers.
  • FR 1213896 discloses a pump comprising a support, a tube attached to the support, a rotor and a plurality of cams attached to the rotor.
  • the rotor may be driven by a motor.
  • the rotor is pivotally mounted to the support via a movable arm and a spring is mounted between the support and the movable arm so as to pull the rotor against the tube.
  • FR 1213896 also discloses a pump in which a U-shaped length of tubing is wrapped around a rotor comprising two rollers. The ends of the tubing are attached to a frame and the rotor is fixed to the frame by an arm.
  • a sprayer for application of viscous materials such as texture comprising:
  • a cart contains one or more adjustable flow peristaltic pumps, a motor (electric or gas), a material supply hopper and a flow control device.
  • a double-ended motor shaft may be provided wherein one end drive the peristaltic pump and the other end drives an air compressor.
  • This apparatus may also be provided without the compressor where the user will supply atomization air.
  • a texture spray gun is provided with a small hop so that it may be used either independently or with the cart mounted material supply.
  • Another version may be provided with a separate compressor having its own motor for independent operation of material and air.
  • the peristaltic pump provides a unique vibration which enhances the flow of high viscosity materials such as texture by loosening the bond between the hose and the high viscosity materials as well as self-cleaning the hopper.
  • the pump may be run forward or reverse with reverse being used to empty the hose or transfer material.
  • the hose retention mechanism on the peristaltic pump consists of a coupled hose, a hose retainer plate, a mounting plate and a retainer screw.
  • a hose with couplings slides onto each end of the hose retainer plate.
  • the hose retainer plate is secured to a mounting plate or surface with a fastener while the hose couplings protrude through the surface of the mounting plate for access.
  • the hose retainer plate supports the downward loads imposed by the peristaltic pump while the mounting plate or surface keeps the coupled hose in proper alignment in the pump. Matching the profile of the fittings (e.g. hexagon) with the opening of the mounting plate or surface prevents rotation of the fittings when mating hoses are attached with threaded couplings.
  • the distance over which the hose is stretched is made variable or adjustable so that a variable rate of flow may be achieved.
  • the flow is varied by an adjuster that pulls the tubing closer or farther away from the center of the rotor.
  • hose tension T is increased thereby decreasing leakage QL at the points of roller contact.
  • the relationship between output/input pressure P, tube or hose tension T, fluid viscosity V and tube/hose material choices will determine the pump efficiency. Because of these factors, the pump can run anywhere from zero to 100% volumetric efficiency.
  • leakage volume QL becomes equal to the displacement volume (2Q x rpm) thus preventing overpressurization.
  • the self-compensating pump design eliminates the need for expensive motor speed and/or shutoff controls as well as eliminating high current motor starts (allowing the use of a standard 15 amp outlet).
  • the instant invention is a small, relatively inexpensive and self-contained texture sprayer.
  • a cart 12 contains one or more adjustable flow peristaltic pumps 14, a motor 16 (electric or gas), a material supply hopper 18 and a flow control device 20 such as a spray gun or dispense valve.
  • a double-ended motor shaft may be provided wherein one end drive the peristaltic pump 14 and the other end drives an air compressor 22.
  • this apparatus may also be provided without the compressor where the user will supply atomization air.
  • a texture spray gun is provided with a small hopper 20a so that it may be used either independently or with the cart mounted material supply.
  • Another version may be provided with a separate compressor having its own motor for independent operation of material and air.
  • the peristaltic pump 14 provides a unique vibration which enhances the flow of high viscosity materials such as texture by loosening the bond between the hose 24 and the high viscosity materials as well as self-cleaning the hopper 18.
  • the pump 14 may be run forward or reverse with reverse being used to empty the hose or transfer material.
  • the hose retention mechanism 26 on the peristaltic pump 14 consists of a coupled hose 28, a hose retainer plate 30, a mounting plate 32 and a retainer screw 34.
  • a hose with couplings 36 slides onto each end 30a of the hose retainer plate 30.
  • the hose retainer plate 30 is secured to a mounting plate or surface 32 with a fastener 34 while the hose couplings 36 protrude through the surface of the mounting plate 32 for access.
  • the hose retainer plate 30 supports the downward loads imposed by the peristaltic pump 14 while the mounting plate or surface 32 keeps the coupled hose 28 in proper alignment in the pump 14.
  • Matching the profile of the fittings 36 e.g. hexagon
  • the opening 32a of the mounting plate or surface 32 prevents rotation of the fittings 36 when mating hoses 38 are attached with threaded couplings 38a.
  • the distance D over which the hose 28 is stretched is made variable or adjustable so that a variable rate of flow may be achieved.
  • the flow is varied by an adjuster 40 that pulls the tubing 28 closer or farther away from the center of the rotor 42 by raising and lowering the mounting plate 32 relative to the frame 12, rotor 42 and rollers 44.
  • the preferred adjuster 46 is a variable force device for varying the amount of tension on the tubing 28 and the resulting flow.
  • Such device may be a fluid (air or liquid) cylinder which may have, if desired, a separate pressure adjustment 48 for controlling the amount of force applied and accordingly the flow rate.
  • the adjuster 46 may also be a solenoid, adjustable spring or other art recognized force generator.
  • hose tension T is increased thereby decreasing leakage QL at the points of roller 44 contact.
  • the relationship between output/input pressure P, tube or hose tension T, fluid viscosity V and tube/hose material choices will determine the pump efficiency. Because of these factors, the pump can run anywhere from zero to 100% volumetric efficiency.
  • leakage volume QL becomes equal to the displacement volume (2Q x rpm) thus preventing overpressurization.
  • the self-compensating pump design eliminates the need for expensive motor speed and/or shutoff controls as well as eliminating high current motor starts (allowing the use of a standard 15 amp outlet).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Catching Or Destruction (AREA)
  • Nozzles (AREA)

Claims (6)

  1. Pulvérisateur (10) pour appliquer des matériaux visqueux comme une texture, ledit pulvérisateur (10) comprenant :
    un châssis (12) ;
    une boucle de tuyau flexible (28) ayant une première et une seconde extrémité et étant fixée audit châssis (12) ;
    un moteur (16), ledit moteur (16) ayant un arbre auquel un rotor (42) est fixé ;
    une pluralité de rouleaux (44) fixés audit rotor (42) et venant en prise avec ledit tuyau flexible (28) ;
    caractérisé par ledit moteur (16) étant fixé de manière pivotante audit châssis (12) afin de varier la distance entre ledit arbre et lesdites première et seconde extrémité de tuyau flexible ; et
    un générateur de force (46) fixé entre ledit moteur (16) et ledit châssis (12), le générateur de force (46) étant adapté afin de varier la force avec laquelle lesdites rouleaux (44) contactent ledit tuyau flexible (28).
  2. Pulvérisateur (10) pour appliquer des matériaux visqueux selon la revendication 1, dans lequel ledit générateur de force (46) comprend un vérin pneumatique.
  3. Pulvérisateur (10) pour appliquer des matériaux visqueux selon la revendication 2, dans lequel ledit générateur de force (46) comprend un régulateur de pression (48) fixé audit vérin pneumatique.
  4. Pulvérisateur (10) pour appliquer des matériaux visqueux selon la revendication 1, dans lequel ledit tuyau flexible (28) est fixé à une desdites extrémités vers une source de matériau visqueux (18) et à l'autre extrémité desdites extrémités vers un dispositif d'application (20).
  5. Pulvérisateur (10) pour appliquer des matériaux visqueux selon la revendication 1, dans lequel ledit tuyau flexible (28) possède des accouplements (36) auxdites extrémités et comprend en outre un mécanisme de rétention de tuyau flexible (26), comprenant :
    une plaque de montage (32) ; et
    une plaque de fixation de tuyau flexible (30), lesdits accouplements (36) coulissant sur chaque extrémité de ladite plaque de fixation de tuyau flexible (30) avec lesdits accouplements (36) dépassant à travers la surface de ladite plaque de montage (32) à des fins d'accès et ladite plaque de fixation (30) supportant les charges imposées par lesdits rouleaux (44).
  6. Pulvérisateur (10) pour appliquer des matériaux visqueux selon la revendication 5, dans lequel lesdits accouplements (36) comprennent un profilé et ladite plaque de montage (32) comprend des ouvertures (32a) coïncidant avec ledit profilé desdits accouplements (36) afin d'empêcher une rotation desdits accouplements (36) quand le tuyau flexible (28) est fixé.
EP03737034A 2002-06-13 2003-06-13 Pulverisateur de texture a debit reglable equipe d'une pompe peristaltique Expired - Lifetime EP1511575B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US38908802P 2002-06-13 2002-06-13
US389088P 2002-06-13
US44060403P 2003-01-16 2003-01-16
US440604P 2003-01-16
PCT/US2003/018547 WO2003106042A1 (fr) 2002-06-13 2003-06-13 Pulverisateur de texture a debit reglable equipe d'une pompe peristaltique

Publications (3)

Publication Number Publication Date
EP1511575A1 EP1511575A1 (fr) 2005-03-09
EP1511575A4 EP1511575A4 (fr) 2007-01-03
EP1511575B1 true EP1511575B1 (fr) 2009-01-14

Family

ID=29740099

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03737034A Expired - Lifetime EP1511575B1 (fr) 2002-06-13 2003-06-13 Pulverisateur de texture a debit reglable equipe d'une pompe peristaltique

Country Status (7)

Country Link
US (1) US20050254879A1 (fr)
EP (1) EP1511575B1 (fr)
KR (1) KR20050013569A (fr)
CN (1) CN100421812C (fr)
AU (1) AU2003238010A1 (fr)
DE (1) DE60325850D1 (fr)
WO (1) WO2003106042A1 (fr)

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Also Published As

Publication number Publication date
WO2003106042A1 (fr) 2003-12-24
CN1658977A (zh) 2005-08-24
CN100421812C (zh) 2008-10-01
KR20050013569A (ko) 2005-02-04
AU2003238010A1 (en) 2003-12-31
EP1511575A1 (fr) 2005-03-09
US20050254879A1 (en) 2005-11-17
EP1511575A4 (fr) 2007-01-03
DE60325850D1 (de) 2009-03-05

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