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US20050254879A1 - Adjustable flow texture sprayer with peristaltic pump - Google Patents

Adjustable flow texture sprayer with peristaltic pump Download PDF

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Publication number
US20050254879A1
US20050254879A1 US10516218 US51621804A US2005254879A1 US 20050254879 A1 US20050254879 A1 US 20050254879A1 US 10516218 US10516218 US 10516218 US 51621804 A US51621804 A US 51621804A US 2005254879 A1 US2005254879 A1 US 2005254879A1
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US
Grant status
Application
Patent type
Prior art keywords
hose
plate
pump
sprayer
flow
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.)
Abandoned
Application number
US10516218
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

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24Spraying 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
    • B05B7/2489Spraying 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03Spraying 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
    • B05B9/04Spraying 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
    • B05B9/0403Spraying 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
    • B05B9/042Spraying 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/06Mobile combinations
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B41/00Pumping installations or systems
    • F04B41/06Combinations of two or more pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00Machines, pumps, or pumping installations having flexible working members
    • F04B43/12Machines, pumps, or pumping installations having flexible working members having peristaltic action
    • F04B43/1215Machines, pumps, or pumping installations having flexible working members having peristaltic action having no backing plate (deforming of the tube only by rollers)
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2205/00Fluid parameters
    • F04B2205/09Flow through the pump

Abstract

A texture sprayer (10) has a cart (12) containing one adjustable flow peristaltic pumps (14), a motor (16)), a material supply hopper (18) and a flow control device (20). A double-ended motor shaft may be provided wherein one end drives the pump (14) and the other end drives an air compressor (22). A hose retention mechanism (26) on the pump (14), consists of a coupled hose (28), a hose retainer plate (30), a mounting plate (32) and a retainer screw (34). An adjustor (40), which is a variable force device for varying the amount of tension on the hose (28) closer or farther away from center of the rotor (42) by raising and lowering the mounting plate (32) relative to the cart (12), rotor (42) and rollers (44). In the pump (14), the distance over which the hose (28) is stretched is made or adjustable so that a variable rate of flow may be achieved.

Description

  • [0001]
    This application claims the benefit of U.S. Application Ser. No. 60/389,088, filed Jun. 13, 2002.
  • TECHNICAL FIELD BACKGROUND ART
  • [0002]
    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.
  • [0003]
    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 travels 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.
  • DISCLOSURE OF THE INVENTION
  • [0004]
    It is a desire to have a small, relatively inexpensive and self-contained texture sprayer. 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.
  • [0005]
    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.
  • [0006]
    It has been found that 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.
  • [0007]
    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.
  • [0008]
    In the peristaltic pump of the instant invention, 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. As the distance D from the mounting point increases, 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.
  • [0009]
    When the spray gun or dispense valve is closed (no material flow) and pump running, leakage volume QL becomes equal to the displacement volume (2 Q×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).
  • [0010]
    These and other objects and advantages of the invention will appear more fully from the following description made in conjunction with the accompanying drawings wherein like reference characters refer to the same or similar parts throughout the several views.
  • BRIEF DESCRIPTION OF DRAWINGS
  • [0011]
    FIG. 1 is a front perspective view showing the sprayer of the instant invention without a compressor.
  • [0012]
    FIG. 2 is a front perspective view showing the sprayer of the instant invention with a compressor.
  • [0013]
    FIG. 3 is an exploded view showing hose retention mechanism of the sprayer of the instant invention.
  • [0014]
    FIG. 4 is an front perspective view showing hose retention mechanism of the sprayer of the instant invention.
  • [0015]
    FIG. 5 is an side plan view showing hose pressure adjustment mechanism of the sprayer of the instant invention.
  • [0016]
    FIG. 6 is an front plan view showing hose pressure adjustment mechanism of the sprayer of the instant invention.
  • [0017]
    FIG. 7 is an exploded view of the preferred embodiment.
  • BEST MODE FOR CARRYING OUT THE INVENTION
  • [0018]
    The instant invention, generally designated 10, 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.
  • [0019]
    As shown in FIG. 1, 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 20 a 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.
  • [0020]
    It has been found that 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.
  • [0021]
    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 30 a 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) with the opening 32 a of the mounting plate or surface 32 prevents rotation of the fittings 36 when mating hoses 38 are attached with threaded couplings 38 a.
  • [0022]
    In the peristaltic pump 14 of the instant invention, 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.
  • [0023]
    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.
  • [0024]
    As the distance D from the mounting point increases, 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.
  • [0025]
    When the spray gun or dispense valve 20 is closed (no material flow) and pump 14 running, leakage volume QL becomes equal to the displacement volume (2 Q×rpm) thus preventing overpressurization. The self-compensating pump design elimates 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).
  • [0026]
    It is contemplated that various changes and modifications may be made to the texture sprayer without departing from the spirit and scope of the invention as defined by the following claims.

Claims (7)

  1. 1. A sprayer for application of viscous materials such as texture, said sprayer comprising:
    a frame;
    a loop of tubing having first and second ends and being attached to said frame;
    a motor, said motor having a shaft with a rotor attached thereto, said motor being pivotably attached to said frame to vary the distance between said shaft and said first and second tubing ends;
    a plurality of rollers attached to said rotor and engaging said tubing; and
    a force generator attached between said motor and said frame to vary the force with which said rollers contact said tubing.
  2. 2. The sprayer for application of viscous materials of claim 1 wherein said force generator comprises an air cylinder.
  3. 3. The sprayer for application of viscous materials of claim 2 wherein said force generator comprises a pressure regulator attached to said air cylinder.
  4. 4. The sprayer for application of viscous materials of claim 1 wherein said force generator comprises an air cylinder.
  5. 5. The sprayer for application of viscous materials of claim 1 wherein said tubing is attached at one of said ends to a source of viscous material and at the other of said ends to an application device.
  6. 6. The sprayer for application of viscous materials of claim 1 wherein said tubing has couplings at said ends and further comprising a tubing retention mechanism comprising a mounting plate; and
    a hose retainer plate, said couplings sliding onto each end of said hose retainer plate with said couplings protruding through the surface of said mounting plate for access and said retainer plate supporting the loads imposed said rollers.
  7. 7. The sprayer for application of viscous materials of claim 6 wherein said couplings comprise a profile and said mounting plate comprises openings to match said profile of said couplings to prevent rotation said couplings when tubing is attached.
US10516218 2002-06-13 2003-06-13 Adjustable flow texture sprayer with peristaltic pump Abandoned US20050254879A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US38908802 true 2002-06-13 2002-06-13
US44060403 true 2003-01-16 2003-01-16
PCT/US2003/018547 WO2003106042A1 (en) 2002-06-13 2003-06-13 Adjustable flow texture sprayer with peristaltic pump
US10516218 US20050254879A1 (en) 2002-06-13 2003-06-13 Adjustable flow texture sprayer with peristaltic pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10516218 US20050254879A1 (en) 2002-06-13 2003-06-13 Adjustable flow texture sprayer with peristaltic pump

Publications (1)

Publication Number Publication Date
US20050254879A1 true true US20050254879A1 (en) 2005-11-17

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US10516218 Abandoned US20050254879A1 (en) 2002-06-13 2003-06-13 Adjustable flow texture sprayer with peristaltic pump

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US (1) US20050254879A1 (en)
EP (1) EP1511575B1 (en)
KR (1) KR20050013569A (en)
CN (1) CN100421812C (en)
DE (1) DE60325850D1 (en)
WO (1) WO2003106042A1 (en)

Cited By (18)

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WO2009137639A1 (en) * 2008-05-08 2009-11-12 Graco Minnesota Inc. Texture hopper
US20090320751A1 (en) * 2006-06-12 2009-12-31 Mirazita Frank G Texture sprayer
US20100206785A1 (en) * 2008-12-24 2010-08-19 Millipore Corporation Cart and installation for treating biological liquid
US20110174716A1 (en) * 2008-06-02 2011-07-21 Millipore Corporation Installation For Treating A Biological Liquid
US20110185539A1 (en) * 2009-09-09 2011-08-04 Mattson Barry W Multiple position handle
EP2415856A1 (en) * 2010-08-03 2012-02-08 Millipore Corporation Pump cart for a biological liquid treatment installation
CN103122848A (en) * 2013-02-01 2013-05-29 深圳玉升医疗科技有限公司 Infusion pump
US8651397B2 (en) 2009-03-09 2014-02-18 Techtronic Power Tools Technology Limited Paint sprayer
US8900454B2 (en) 2010-06-08 2014-12-02 Emd Millipore Corporation Device for a biological liquid treatment installation
US8906229B2 (en) 2010-06-08 2014-12-09 Emd Millipore Corporation Device for a biological liquid treatment installation
US8916045B2 (en) 2011-03-28 2014-12-23 Emd Millipore Corporation Installation for treating a biological liquid
US9051929B2 (en) 2010-01-13 2015-06-09 Emd Millipore Corporation Circuit for biological liquid
US9174171B2 (en) 2010-06-23 2015-11-03 Emd Millipore Corporation Bag for a circuit of a biological liquid treatment installation
US9174145B2 (en) 2010-06-23 2015-11-03 Emd Millipore Corporation Bag for a circuit of a biological liquid treatment installation
US9205955B2 (en) 2010-06-08 2015-12-08 Emd Millipore Corporation Device for a biological liquid treatment installation
US20160008834A1 (en) * 2014-07-14 2016-01-14 Graco Minnesota Inc. Material dispense tracking and control
US9523072B2 (en) 2009-01-23 2016-12-20 Emd Millipore Corporation Method for providing a circuit for biological liquid and circuit obtained
US9777847B2 (en) 2012-07-23 2017-10-03 Emd Millipore Corporation Circuit for biological liquid comprising a pinch valve

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US7731104B2 (en) 2006-04-26 2010-06-08 Wagner Spray Tech Corporation Texture sprayer
US20080279610A1 (en) 2007-05-07 2008-11-13 Bober Andrew M Floor finish applicator
US8246263B2 (en) 2007-07-20 2012-08-21 Diversey, Inc. Floor finish applicator
KR100908669B1 (en) * 2008-05-15 2009-07-21 박선배 Constant pressure type sprayer

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US3172367A (en) * 1963-01-08 1965-03-09 Technicon Instr Roller type pump
US3463092A (en) * 1966-08-01 1969-08-26 Biotec Ab Hose pump
US3483092A (en) * 1966-12-19 1969-12-09 Detrex Chem Ind Recovery of a volatile organic solvent by distillation with solvent feed flow responsive to still temperature
US3447478A (en) * 1967-03-03 1969-06-03 Miles Lab Peristaltic pump
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KR20050013569A (en) 2005-02-04 application
EP1511575A4 (en) 2007-01-03 application
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CN1658977A (en) 2005-08-24 application
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EP1511575A1 (en) 2005-03-09 application
DE60325850D1 (en) 2009-03-05 grant

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