US3893591A - High pressure spray washing system - Google Patents

High pressure spray washing system Download PDF

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Publication number
US3893591A
US3893591A US44137774A US3893591A US 3893591 A US3893591 A US 3893591A US 44137774 A US44137774 A US 44137774A US 3893591 A US3893591 A US 3893591A
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United States
Prior art keywords
pump
valve
liquid
flow
pressure
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Expired - Lifetime
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English (en)
Inventor
Gerald L Hockmuth
Iven R Norstrud
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Britt Tech Corp
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Britt Tech Corp
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Filing date
Publication date
Application filed by Britt Tech Corp filed Critical Britt Tech Corp
Priority to US44137774 priority Critical patent/US3893591A/en
Priority to PH15747A priority patent/PH11496A/en
Priority to ZA00742484A priority patent/ZA742484B/xx
Priority to DK230074A priority patent/DK230074A/da
Priority to DE2420634A priority patent/DE2420634C3/de
Priority to BE144123A priority patent/BE814785A/xx
Priority to NL7406419A priority patent/NL7406419A/xx
Priority to SE7406494A priority patent/SE393306B/xx
Priority to ES426343A priority patent/ES426343A1/es
Priority to AU69207/74A priority patent/AU488291B2/en
Priority to AR25388574A priority patent/AR201588A1/es
Priority to CA200,960A priority patent/CA1007867A/en
Priority to IT5133274A priority patent/IT1013328B/it
Priority to FR7422800A priority patent/FR2260390A1/fr
Priority to LU70451A priority patent/LU70451A1/xx
Priority to AT588674A priority patent/AT352942B/de
Priority to BR629474A priority patent/BR7406294D0/pt
Priority to NO742900A priority patent/NO138469C/no
Priority to JP9882574A priority patent/JPS50114058A/ja
Priority to CH1670374A priority patent/CH584072A5/xx
Priority to ES433782A priority patent/ES433782A1/es
Priority to ES433783A priority patent/ES433783A1/es
Priority to GB579775A priority patent/GB1502857A/en
Application granted granted Critical
Publication of US3893591A publication Critical patent/US3893591A/en
Priority to SE7514376A priority patent/SE411963B/xx
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/085—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to flow or pressure of liquid or other fluent material to be discharged
    • B05B12/087—Flow or presssure regulators, i.e. non-electric unitary devices comprising a sensing element, e.g. a piston or a membrane, and a controlling element, e.g. a valve
    • B05B12/088—Flow or presssure regulators, i.e. non-electric unitary devices comprising a sensing element, e.g. a piston or a membrane, and a controlling element, e.g. a valve the sensing element being a flexible member, e.g. membrane, diaphragm, bellows
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/085—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to flow or pressure of liquid or other fluent material to be discharged
    • B05B12/087—Flow or presssure regulators, i.e. non-electric unitary devices comprising a sensing element, e.g. a piston or a membrane, and a controlling element, e.g. a valve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
    • B05B12/1418—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet for supplying several liquids or other fluent materials in selected proportions to a single spray outlet
    • 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
    • B05B7/26—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device
    • B05B7/28—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device in which one liquid or other fluent material is fed or drawn through an orifice into a stream of a carrying fluid
    • B05B7/32—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device in which one liquid or other fluent material is fed or drawn through an orifice into a stream of a carrying fluid the fed liquid or other fluent material being under pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/026—Cleaning by making use of hand-held spray guns; Fluid preparations therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S3/00—Vehicle cleaning apparatus not integral with vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S3/00—Vehicle cleaning apparatus not integral with vehicles
    • B60S3/04—Vehicle cleaning apparatus not integral with vehicles for exteriors of land vehicles
    • B60S3/044—Hand-held cleaning arrangements with liquid or gas distributing means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
    • F16K31/365—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor the fluid acting on a diaphragm
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D11/00—Control of flow ratio
    • G05D11/006—Control of flow ratio involving a first fluid acting on the feeding of a second fluid
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/06—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule
    • G05D16/063—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane
    • G05D16/0644—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator
    • G05D16/0663—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator using a spring-loaded membrane with a spring-loaded slideable obturator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
    • B08B2203/02—Details of machines or methods for cleaning by the force of jets or sprays
    • B08B2203/0217—Use of a detergent in high pressure cleaners; arrangements for supplying the same
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2703—Flow rate responsive

Definitions

  • ABSTRACT A high pressure washing system wherein the positive action displacement pump is continuously starved and the variable pressure water supply is controlled to reduce the pressure applied thereby to the feed lines to the pump at essentially zero with the result that the ratio of water to cleaning solution can be metered accurately irrespective of substantial variations in pressure of the source of supply. Essentially any desired ratio can be obtained and accurately maintained by adjustment of the orifice of a valve in the cleaning solution line, once the improved control device has been adjusted for the approximate range.
  • This invention relates to high pressure washing systerns. More particularly, it relates to a high pressure washing system designed for use in conjunction with pressurized supplies of water as commonly furnished to cities and is designed to obviate the difficulties normally experienced in such systems as a result of substantial variations in pressure in the water supply of such cities.
  • a general object of my invention is to provide a novel and improved high pressure washing system capable of operating effectively irrespective of substantial changes in pressure at the water supply.
  • a more specific object is to provide a novel and improved high pressure washing system capable of simple, easy and accurate adjustment to provide essentially any desired ratio of cleaning solution to water.
  • Another object is to provide a novel and improved high pressure washing system which can be adjusted to essentially all desired ratios of cleaning solution to water and will continue to operate accurately at such ratios irrespective of substantial variations in the water supply pressure.
  • FIG. 1 is a diagrammatic view of a preferred embodiment of our invention
  • FIG. 2 is a side elevational view of the improved control device with the lower portion thereof broken away to show the interior in vertical section;
  • FIG. 3 is a vertical sectional view taken along line 3-3 of FIG. 2.
  • FIG. 1 The preferred system embodying the invention is illustrated diagrammatically in FIG. 1 wherein the water supply source, which may or may not be pressurized, is identified by the numeral 4 and is connected by a conduit 5 to the improved control device 6.
  • An electrically operated valve 7 is interposed within the conduit 5 and moves between completely open and closed positions.
  • the conduit 5 is connected at one of its ends to the water inlet port 8 of the control device.
  • the water supply 4 varies substantially in pressure.
  • the system works well, however, with a non-pressurized water supply or even one involving a negative pressure.
  • the control device 6 has a liquid outlet port 9 and a pair of cleaning solution inlet ports 10 and 11.
  • the port 10 is connected to a cleaning solution supply source 12 by a conduit 13 within which an electrically controlled adjustable needle valve 14 having a needle valve flow adjustment and a check valve 15 are interposed.
  • the valve 14 moves between open and closed positions and the check valve 15 pennits flow only toward the control device 6.
  • a by-pass conduit 16 is arranged in fluid communication with the portions of the conduit 13 at opposite sides of the check valve 15 and valve 14, as shown in FIG. 1, so as to circumvent or by-pass the same when desired.
  • An electrically operated valve 17 is interposed within the conduit 16 and moves between open and closed positions when activated.
  • the cleaning solution inlet 11 is similarly connected to a second supply 18 of cleaning solution or concentrate by a conduit 19 within which are interposed check valve 20 and an electrically operated adjustable needle valve 21 having a needle valve flow adjustment.
  • the check flow 20 prevents flow from returning to the concentrate supply 18. lf desired, a by-pass circuit similar to elements 16 and 17 may be utilized in conjunction with elements 19-21 for the same purpose.
  • a positive action displacement pump 22 capable of generating high pressures has its inlet 23 connected by conduit 24 to the liquid outlet 9 of control device 6.
  • the pump outlet is connected by conduit 26 to a flow directing member 27 carrying a valve 28 and having a discharge terminal 29.
  • conduit 30 Connected to the conduits 24 and 26 at opposite sides of the pump is a conduit 30 with a relief valve 31, preferably of the type shown in US. Letters Patent No. 3,l40,049 therein to permit the flow of the pump 22 to be recirculated when valve 28 is closed.
  • the control device 6, as more clearly shown in FIGS. 2 and 3, is comprised of an upper member 32 and a lower member 33 which includes a threaded cup 34.
  • the upper member 32 is of inverted cup shape and, with a diaphragm 35, defines a pressure chamber 36. As shown, the diaphragm 35 is clamped in sealing relation across the mouth of the cup member between the two members when they are threaded to each other as shown at 37 in FIG. 3.
  • a centrally disposed pressure plate 38 is carried by the diaphragm and supports a pressure spring 39 which is urged downwardly by a threaded pressure pin 40 that is threaded into an interiorly threaded tubular element 41 carried by the upper end of the inverted cup-like member 32.
  • the upper end of the spring 39 carries a pressure transmitting cap 42, the lower end of which fits into the spring and the upper surface of which is concaved to receive the lower end of the pressure pin.
  • a lock nut 43 is provided to secure the pin 40 in desired position once it has been properly adjusted.
  • the lower member 33 has a recessed area 44 in horizontal wall structure 45 immediately below the diaphragm 35 which has a central vertical passage 46 accommodating valve stem 47 of valve member 48.
  • the intermediate section of lower member 33 has a plurality of passages formed therein and disposed above its tubular lower end portion 49.
  • One such passage is the water supply inlet passage 50 which communicates with the interior of the tubular lower end portion 49 to constitute a water chamber 51.
  • the remainder of the intermediate section of member 33 defines a cleaning liquid solution inlet passage 52 disposed opposite water inlet passage 50, a second cleaning solu tion inlet passage 53 extending at right angles thereto, and a liquid discharge outlet passage 54 opposite the latter.
  • Each of the two inlet passages 52 and 53 and the outlet passage 54 communicate with each other in that they terminate in a mixing chamber 55.
  • the mixing chamber 55 is separated from the water chamber 51 by an arcuate transverse vertical wall structure 56 which surrounds a vertical central passage 57 which brings the mixing chamber 55 into fluid communication with the water chamber 51 when valve element 48 is open.
  • Valve element 48 is carried by valve stem 47 which extends up into and bears against the concaved under surface of a foot member 60 carried by pressure plate 38, whereby movement of the diaphragm is transmitted to valve member 48.
  • valve member 48 As shown, the lower end portion of valve member 48 is reduced and carries an O-ring 61 in a groove provided therefor adjacent its extremity to function as a piston within an upstanding open ended cylinder 62 carried by interiorly threaded cap member 34.
  • a spring member 63 surrounds the cylinder 62 and extends between the valve member 48 and the cap member 34 and urges the valve member upwardly toward the valve seat 64 which is carried by the lower end of the structure defining passage 57.
  • a vertical passage 65 extends upwardly through the valve member 48 and centrally of a valve stem 47, as shown in FIGS. 2 and 3 and is connected with a diametrically extending passage 66 which brings the mixing chamber into constant fluid communication with the interior of cylinders 62 behind the piston portion of the valve member 48.
  • a weep hole 67 extends through wall structure 56 and maintains water chamber 51 in constant minor communication with mixing chamber 55 and serves to maintain pump 22 in primed condition while not in operation.
  • the size of weep hole 67 is far from capable of furnishing an adequate supply of water to the pump when the latter is in operation, irrespective of the magnitude of pressure carried by the water sup ply source.
  • the pump 22 is maintained in a starved condition at all times.
  • the combined size of the orifice at valve 48, plus the combined size of the orifices of valves 14 and 21 is insufficient to admit an adequate supply of liquid for the pump 22 to operate at its rated capacity.
  • the pump maintains a downstream vacuum with respect to the control device 6 at all times.
  • valve 14 and control device 6 Since the pump 22 is continuously being starved, the amount of liquid drawn through valve 14 and control device 6 will be proportional to the sizes of orifices in these respective members. As a consequence, one can proportion accurately over a very wide range, as from 1:1 to 1:2,000. Such metering is very accurate since it can be accomplished by adjusting the needle adjustments of the valves 14 and 21, for the control device 6 continuously adjusts the orifice thereof in accordance with the extent of negative pressure created downstream by the pump 22 and the extent of restriction of the orifices in the valves 14 and 21.
  • the accuracy of the desired ratios can be maintained in this system irrespective of very substantial fluctuations in pressure in the source of supply of water. For example, if the pressure in the public supply of water diminishes to less than 20 p.s.i., the ratio of water to cleaning solution discharged by our cleaning system will remain accurate. lf the water pressure will diminish, the flow of water past the valve element 48 will likewise diminish and consequently, the pump 22 will be starved to a greater extent, thereby increasing the negative pressure downstream from the control device 6. Such increase of negative pressure causes diaphragm 35 to be drawn downwardly, which in turn forces valve stem 47 to move valve element 48 against the action of spring 63 and increase the orifice thereat.
  • the control device 6 similarly maintains a constant negative pressure between that device and the pump 22. This is accomplished because the tendency for the flow to increase past the valve member 48 reduces the negative pressure within the line leading from the control device outlet 54 to the pump 22. This reduction in negative pressure is reflected by diaphragm 35 and causes the same to permit the valve stem 47 to raise and the valve element 48 to restrict the orifice at valve seat 64, thereby restricting the flow of water to the mixing chamber 55 and maintaining a constant negative pressure. Since the valve 48 moves closer to closed position, it diminishes the orifice and thereby prevents the volume of flow to the mixing chamber from increasing and causing the desired ratio to be disturbed.
  • valve 14 or 21 In the event concentrate from either source 12 or 18 is desired to be mixed wtih water, this can be accomplished as hereinbefore described by opening the appropriate valve 14 or 21, as the case may be and permitting the other to remain closed. In the event a mixture of the two concentrates is desired, both valves 14 and 21 may be opened. It will be understood, of course, that valve 7 remains open at all times except when pure concentrate is desired.
  • valve 28 When the valve 28 is in closed position, pump 22 can continue to run as a result of the relief valve 31 which opens, in that event, and permits the liquid discharged through the pump outlet 25 to recirculate through the conduit 30 and re-enter the pump at its inlet 24. Under these conditions, check valves and 21 automatically close to prevent return flow into the concentrate supplies l2 and 18.
  • the electrically operated needle adjustment valves 14 and 21 may be of the type of adjustable solenoid valve No. 8260A54M which may be purchased from Automotive Switch Co., 50-56 Hanover Road, Florham Park, New Jersey.
  • a. positive displacement pump having a liquid inlet and a liquid discharge outlet
  • flow directing means connected to said pump outlet for directing the flow of such liquid against a surface to be cleaned
  • conduit means connected with said pump inlet and having an intake adapted to be connected to a source of water;
  • a pressure-sensitive flow control device interposed within said conduit means and sensitive to the downstram pressure within said conduit means and having a variable flow-control orifice;
  • second conduit means connected in fluid communicating relation with said first mentioned conduit means at a point between said pump and the point of control of said control device and having an intake adapted to be connected to a source of liquid cleaner;
  • a valve movable between open and closed positions interposed within said second mentioned conduit means between its intake and the point at which it is connected with said first mentioned conduit means for permitting said pump to draw cleaner into the flow of said first mentioned conduit means when the valve is in open position;
  • said flow control device and said valve having flow control orifices the combined dimensions of which at all times are insufficient to permit said pump to operate at rated capacity, whereby said first mentioned conduit means is always subjected to a negative pressure when said pump is operating;
  • said fiow control device including down-stream pressure-sensitive control means located downstream of said control device fiow control orifice and constructed and arranged to vary its flow control orifice dimensions to increase the same when the downstream pressure decreases and decrease the same when the down-stream pressure increases to thereby maintain a constant negative pressure in said first mentioned conduit means between said pump and said control device irrespective of changes which may take place in the pressure at which the water may be supplied to said first mentioned conduit means.
  • valve has a readily adjustable orifice through which the liquid cleaner must flow whereby the ratio of water to liquid cleaner may be accurately adjusted and metered.
  • control means includes a diaphragm actuated valve member the diaphragm of which is located down-stream of said flow control orifice and is sensitive to down-stream negative pressure and which is resiliently urged in valve opening-direction.
  • a positive displacement pump having a liquid inlet and a liquid discharge outlet
  • flow directing means connected to said pump outlet for directing the flow of such liquid against a surface to be cleaned
  • conduit means connected with said pump inlet and having an intake adapted to be connected to a source of water;
  • second conduit means connected in fluid communicating relation with said first mentioned conduit means at a point between said pump and the point of control of said control device and having an intake adapted to be connected to a source of liquid cleaner;
  • a valve movable between open and closed positions interposed within said second mentioned conduit means between its inlet and the point at which it is connected with said first mentioned conduit means for permitting said pump to draw cleaner into said first mentioned conduit means when the valve is in open position;
  • said flow control device being sensitive to the downstream pressure within said first mentioned conduit means and having a controlled variable flow orifice through which the water must pass to said pump;
  • control device having a pressure sensing element located down-stream of its said variable flow orifice controlling said variable fiow orifice to reduce the effect of the pressure of the water supply within said first mentioned conduit means to substantially zero.
  • valve has a readily adjustable orifice through which the liquid cleaner must flow whereby the ratio of water to liquid cleaner may be accurately adjusted and metered.
  • third conduit means connected in fluid communication with said first mentioned conduit means at a point between said pump and the point of control of said control device and having an intake adapted to be connected to a second source of liquid cleaner
  • a valve movable between open and closed positions interposed within said third conduit means between its intake and the point at which it is connected with said first mentioned conduit means for permitting said pump to draw cleaner from such second source into the flow of said first mentioned conduit means when the valve is in open position.
  • variable restriction of the flow to the pump from the variably pressurized source of the second liquid component automatically compensates for changes in negative pressure between the pump and the point of restriction.
  • variable restriction of the flow to the pump from the variably pressurized source of the second liquid component is automatically varied and automatically compensates for changes in negative pressure between the pump and the point of restriction.
  • a method of accurately metering proportions of a plurality of liquid components of a mixed solution consisting in:
  • a providing a positive action displacement pump having a fluid inlet and outlet b. concurrently connecting by conduit the fluid inlet of the pump to separate sources of the liquid components of the solution to be mixed c. restricting the flow to the inlet of the pump of each of the liquid components to be mixed sufficiently to cause the pump to operate under a starved condition at all times whereby the relative flows of each component will be metered in proportion to the relative sizes of the minimum dimensions of the conduit through which each of the components must flow to the pump inlet.
  • a flow control device comprising a. a hollow body having wall structure defining separate pressure, mixing and water chambers;
  • diaphragm means separating said pressure chamber from said mixing chamber
  • the wall structure defining said mixing chamber having a passage formed therethrough and connecting said mixing chamber with said water chamber and supporting a valve seat thereon surround ing said passage;
  • valve means positioned adjacent said valve seat in position to engage and close the same;
  • valve stem carried by one of said diaphragm and valve means and extending therebetween to cause said valve to be opened when said diaphragm moves in an opposite direction;
  • adjustable spring means engaging said diaphragm means and urging the same against said valve stem in said opposite direction;
  • said body wall structure also defining a water inlet port communicating with said water chamber and a liquid outlet port communicating with said mixing chamber and at least one liquid inlet port communicating with said mixing chamber and said liquid outlet port, and
  • a weeper passage extending through said wall structure between said water chamber and said mixing chamber whereby water may pass into said mixing chamber in small quantities for pump priming purposes when said water inlet is connected to a source of water.
  • fluid passage means extending between said mixing chamber and the interior of said cylinder behind said piston member and providing fluid communication therebetween.
  • a flow control device comprising:
  • diaphragm means separating said pressure chamber from said mixing chamber
  • the wall structure defining said mixing chamber having a passage formed therethrough and connecting said mixing chamber with said water chamber and supporting a valve seat thereon surround- 10 ing said passage;
  • valve means positioned adjacent said valve seat in position to engage and close the same;
  • valve stem carried by one of said diaphragm and valve means and extending therebetween to cause said valve to be opened when said diaphragm moves in an opposite direction;
  • adjustable spring means engaging said diaphragm means and urging the same against said valve stem in said opposite direction;
  • said body wall structure also defining a water inlet port communicating with said water chamber and a liquid outlet port communicating with said mixing chamber and at least one liquid inlet port communicating with said mixing chamber and said liquid outlet port;
  • a weeper passage extending through said wall structure between said water chamber and said mixing chamber whereby water may pass into said mixing chamber in small quantities for pump priming purposes when said water inlet is connected to a source of water under pressure.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Accessories For Mixers (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Spray Control Apparatus (AREA)
  • Gas Separation By Absorption (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
US44137774 1974-02-11 1974-02-11 High pressure spray washing system Expired - Lifetime US3893591A (en)

Priority Applications (24)

Application Number Priority Date Filing Date Title
US44137774 US3893591A (en) 1974-02-11 1974-02-11 High pressure spray washing system
PH15747A PH11496A (en) 1974-02-11 1974-04-17 High pressure spray washing system
ZA00742484A ZA742484B (en) 1974-02-11 1974-04-18 High pressure spray washing system
DK230074A DK230074A (da) 1974-02-11 1974-04-26
DE2420634A DE2420634C3 (de) 1974-02-11 1974-04-27 Hochdruck-Spruh-Waschvorrichtung
BE144123A BE814785A (fr) 1974-02-11 1974-05-09 Systeme de lavage par pulverisation a haute pression
NL7406419A NL7406419A (nl) 1974-02-11 1974-05-13 Sproei-wasinrichting werkend met hoge druk.
SE7406494A SE393306B (sv) 1974-02-11 1974-05-15 Sett att reglera proportionerna i ett flertal vetskekomponenter i en blandad tvettlosning och anleggning for tillempning av settet
ES426343A ES426343A1 (es) 1974-02-11 1974-05-16 Perfeccionamientos introducidos en un sistema de lavado porrociado a alta presion.
AU69207/74A AU488291B2 (en) 1974-02-11 1974-05-21 High pressure washing apparatus
AR25388574A AR201588A1 (es) 1974-02-11 1974-05-23 Disposicion de lavado con rociado a alta presion
CA200,960A CA1007867A (en) 1974-02-11 1974-05-27 High pressure spray washing system
IT5133274A IT1013328B (it) 1974-02-11 1974-05-31 Perfezionamento nei sistemi di lavaggio a spruzzo con acqua ad alta pressione
FR7422800A FR2260390A1 (da) 1974-02-11 1974-06-28
LU70451A LU70451A1 (da) 1974-02-11 1974-07-02
AT588674A AT352942B (de) 1974-02-11 1974-07-16 Druck-abspritzwaschanlage und mischventil
BR629474A BR7406294D0 (pt) 1974-02-11 1974-07-31 Aperfeicoado sistema de lavagem a alta pressao aperfeicoado processo para acuradamente medir proporcoes de uma pluralidade dispositivo controle de escoamento
NO742900A NO138469C (no) 1974-02-11 1974-08-12 Hoeytrykksstraalevaskeanlegg.
JP9882574A JPS50114058A (da) 1974-02-11 1974-08-28
CH1670374A CH584072A5 (da) 1974-02-11 1974-12-16
ES433782A ES433782A1 (es) 1974-02-11 1975-01-14 Un dispositivo de control de flujo.
ES433783A ES433783A1 (es) 1974-02-11 1975-01-14 Un metodo de dosificar de manera precisa proporciones de una pluralidad de componentes liquidos de una solucion de limpieza mezclada.
GB579775A GB1502857A (en) 1974-02-11 1975-02-11 Mixing of liquids
SE7514376A SE411963B (sv) 1974-02-11 1975-12-18 Sett att reglera proportioner av ett flertal vegskekomponenter i en vetskeblandning

Applications Claiming Priority (1)

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US44137774 US3893591A (en) 1974-02-11 1974-02-11 High pressure spray washing system

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US3893591A true US3893591A (en) 1975-07-08

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US (1) US3893591A (da)
JP (1) JPS50114058A (da)
AR (1) AR201588A1 (da)
AT (1) AT352942B (da)
BE (1) BE814785A (da)
BR (1) BR7406294D0 (da)
CA (1) CA1007867A (da)
CH (1) CH584072A5 (da)
DE (1) DE2420634C3 (da)
DK (1) DK230074A (da)
ES (3) ES426343A1 (da)
FR (1) FR2260390A1 (da)
GB (1) GB1502857A (da)
IT (1) IT1013328B (da)
LU (1) LU70451A1 (da)
NL (1) NL7406419A (da)
NO (1) NO138469C (da)
PH (1) PH11496A (da)
SE (2) SE393306B (da)
ZA (1) ZA742484B (da)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4247018A (en) * 1979-12-14 1981-01-27 The Coca-Cola Company Non-pressurized fluid transfer system
US4319628A (en) * 1979-07-13 1982-03-16 Southern California Gas Company Two liquid heat exchange system and safety valve to prevent contamination
US4437812A (en) 1977-05-13 1984-03-20 Varian Associates, Inc. Single-pump multiple stroke proportioning for gradient elution liquid chromatography
US4503915A (en) * 1982-04-03 1985-03-12 Feecon Corporation Proportioning system
EP0175262A2 (de) * 1984-09-10 1986-03-26 Alfred Kärcher GmbH & Co. Hochdruckreinigungsgerät
EP0899027A2 (de) * 1997-08-28 1999-03-03 GARDENA Kress + Kastner GmbH Verfahren zum Betreiben einer Hochdruckvorrichtung, insbesondere eines Hochdruckreinigers, und Hochdruckvorrichtung
US10906059B2 (en) * 2019-07-04 2021-02-02 Suzhou Crosstec Co., Ltd. Sprayer with self-cleaning function
CN117772510A (zh) * 2024-02-23 2024-03-29 常州市爱伦机械有限公司 一种轴承抹油输送系统及其工作方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8917379D0 (en) * 1989-07-29 1989-09-13 Chadwick Geoffrey A Fluid regulator valves
GB2242255A (en) * 1990-02-13 1991-09-25 Dereve Fluid flow control governor
ES2239550B1 (es) * 2004-12-14 2006-06-01 Goizper, S.Coop Regulador de presion de liquidos.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3369705A (en) * 1966-05-09 1968-02-20 Curtis Dyna Prod Corp Plural source cleaning apparatus having fluid actuated diaphragmtype proportioning valve
US3498311A (en) * 1966-04-14 1970-03-03 Roland J Hawes Jr Apparatus for dispensing and delivering feed additives to livestock and poultry

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3498311A (en) * 1966-04-14 1970-03-03 Roland J Hawes Jr Apparatus for dispensing and delivering feed additives to livestock and poultry
US3369705A (en) * 1966-05-09 1968-02-20 Curtis Dyna Prod Corp Plural source cleaning apparatus having fluid actuated diaphragmtype proportioning valve

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4437812A (en) 1977-05-13 1984-03-20 Varian Associates, Inc. Single-pump multiple stroke proportioning for gradient elution liquid chromatography
US4319628A (en) * 1979-07-13 1982-03-16 Southern California Gas Company Two liquid heat exchange system and safety valve to prevent contamination
US4247018A (en) * 1979-12-14 1981-01-27 The Coca-Cola Company Non-pressurized fluid transfer system
US4503915A (en) * 1982-04-03 1985-03-12 Feecon Corporation Proportioning system
EP0175262A2 (de) * 1984-09-10 1986-03-26 Alfred Kärcher GmbH & Co. Hochdruckreinigungsgerät
EP0175262A3 (en) * 1984-09-10 1987-03-11 Alfred Karcher Gmbh & Co. High-pressure cleaning device
EP0899027A2 (de) * 1997-08-28 1999-03-03 GARDENA Kress + Kastner GmbH Verfahren zum Betreiben einer Hochdruckvorrichtung, insbesondere eines Hochdruckreinigers, und Hochdruckvorrichtung
EP0899027A3 (de) * 1997-08-28 1999-12-08 GARDENA Kress + Kastner GmbH Verfahren zum Betreiben einer Hochdruckvorrichtung, insbesondere eines Hochdruckreinigers, und Hochdruckvorrichtung
US10906059B2 (en) * 2019-07-04 2021-02-02 Suzhou Crosstec Co., Ltd. Sprayer with self-cleaning function
CN117772510A (zh) * 2024-02-23 2024-03-29 常州市爱伦机械有限公司 一种轴承抹油输送系统及其工作方法
CN117772510B (zh) * 2024-02-23 2024-05-03 常州市爱伦机械有限公司 一种轴承抹油输送系统及其工作方法

Also Published As

Publication number Publication date
ES433782A1 (es) 1976-12-01
DK230074A (da) 1975-10-06
ZA742484B (en) 1975-04-30
DE2420634C3 (de) 1979-04-05
CA1007867A (en) 1977-04-05
AR201588A1 (es) 1975-03-31
BR7406294D0 (pt) 1975-09-09
FR2260390A1 (da) 1975-09-05
AT352942B (de) 1979-10-10
SE411963B (sv) 1980-02-11
SE7406494L (da) 1975-08-12
PH11496A (en) 1978-02-01
AU6920774A (en) 1975-11-27
JPS50114058A (da) 1975-09-06
DE2420634A1 (de) 1975-08-14
ATA588674A (de) 1979-03-15
NO138469C (no) 1978-10-18
SE7514376L (sv) 1975-12-18
NO138469B (no) 1978-06-05
LU70451A1 (da) 1974-11-28
DE2420634B2 (de) 1978-07-27
GB1502857A (en) 1978-03-08
SE393306B (sv) 1977-05-09
ES426343A1 (es) 1976-11-01
ES433783A1 (es) 1976-12-01
IT1013328B (it) 1977-03-30
CH584072A5 (da) 1977-01-31
NL7406419A (nl) 1975-08-13
BE814785A (fr) 1974-09-02
NO742900L (da) 1975-08-12

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