US3602607A - Solution metering apparatus - Google Patents

Solution metering apparatus Download PDF

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Publication number
US3602607A
US3602607A US860837A US3602607DA US3602607A US 3602607 A US3602607 A US 3602607A US 860837 A US860837 A US 860837A US 3602607D A US3602607D A US 3602607DA US 3602607 A US3602607 A US 3602607A
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United States
Prior art keywords
solution
metering container
vacuum source
supply tank
container
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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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US860837A
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English (en)
Inventor
Howard T Hodges
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Eastman Kodak Co
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Eastman Kodak Co
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Publication date
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
    • G01F11/28—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors

Definitions

  • This invention relates generally to metering devices, and more specifically to an improved power-operated, solution metering apparatus.
  • Apparatus for metering and/or mixing one or more solutions are particularly applicable to devices and chemical processes that require accurate measurement and delivery of a solution or solutions in precise quantity or proportions.
  • the metering and/or mixing of a solution or solutions in precise quantity or porportions is provided by precision manufactured pumps designed to maintain a stable pump rate for a given life.
  • precision manufactured pumps designed to maintain a stable pump rate for a given life.
  • the parts of such pumps that are in direct contact with the solution must be constructed of a material that will not be chemically attached by the solution, or prone to rust or corrode.
  • precision pumps of this type are relatively expensive.
  • This invention includes within its scope a power-operated, solution metering apparatus for accurately metering and/or mixing one or more solutions.
  • Metering apparatus'of this type are useful for replenishing processing solutions in a photographic processing device, and are further useful in any chemical process utilizing mixtures of liquids or solutions.
  • the solution metering mechanism of this invention is operated by a suitable source of motive power, and the volume of solution introduced into a metering container of the apparatus is controlled by volume limiting means coupled to the container such as a volume limiting chamber comprising a hollow flexible member, a suction cylinder, a bellows, a manometer type device, or a pressure regulating device.
  • One of the objects of the present invention is to provide power operated, solution metering apparatus for devices, chemical processes and the like for metering and/or mixing one or more solutions.
  • Another object of the invention is to provide a poweroperated, solution metering apparatus having volume limiting meansfor controlling the volume of solution introduced into a metering container of the apparatus.
  • FIG. I is a schematic view partially in section showing a preferred embodiment of the solution metering apparatus of this invention with a volume limiting chamber as the volume limiting means;
  • FIG. 2 is a section view of the volume limiting chamber taken along line 22 of FIG. 1;
  • FIG. 3 is a segmental view in section of a volume limiting chamber of the type shown in FIG. 2 showing a modification of the resilient pressure pad;
  • FIG. 4 is a segmental view partially in section showing another embodiment of the volume limiting chamber of FIG. 2;
  • FIG. 5 is a segmental view partially in section showing still another embodiment of the volume limiting means of the invention.
  • FIG. 6 is a schematic view similar to FIG. 1 showing another embodiment of the solution metering apparatus of this invention with a suction cylinder as the volume limiting means;
  • FIG. 7 is a segmental view of an alternate construction of the power cylinder for operating the suction cylinder of FIG.
  • FIG. 8 is a view similar to FIG. 6 showing another embodiment of the solution metering apparatus in its normal position and incorporating a manometer type volume limiting means;
  • FIG. 9 is a view of the apparatus of FIG. 8 showing the metering apparatus and volume limiting means in a volume limiting position;
  • FIG. 10 is a view similar to FIG. 8 showing another embodiment of the solution metering apparatus in its normal position and incorporating a pressure regulating, volume limiting means.
  • FIG. I a preferred embodiment of the power-operated, solution metering apparatus of this invention is shown in FIG. I as comprising one or more metering containers 12 preferably constructed of a rigid, transparent material such as glass or plastic.
  • Each of the containers 12 has a throat 14 at the lower end thereof provided with an opening for receiving a rubber seal 16.
  • Any well-known means, not shown, such as a nut in engagement with threads on the periphery of throat 14, may be provided for holding seal 16 in the opening in sealing engagement therewith.
  • the seal 16 has an opening through which one end of a supply tube 18 is inserted, and slidably adjustable in the direction of the arrows AA.
  • a flexible supply hose 20 has one end connected to tube 18, and the opposite end thereof insertable in a supply tank 22 of solution.
  • An output tube 24 has one end partially inserted into an opening in seal 16, and is provided with a suitable valve 26 for controlling solution flow from container 12 to any suitable solution-receiving device, not shown, such as a photographic processing device or the like.
  • Each container 12 is provided with a volumetric index 28 on the outer surface thereof for indicating the volume of solution in the container at any selected index mark. To meter a precise volume of solution, the operator must adjust metering tube 18 with the upper end thereof in alignment with a selected index mark on container 12.
  • Solution is introduced into metering container 12 from supply tank 22 until the solution level in the metering container reaches a level designated B which is above the uppermost index mark on metering container l2.
  • the excess solution in the metering container is allowed to drain back through supply tube 18 into supply tank 22, and such action will continue until the solution level in metering container 12 is at a level C equal to the top of tube 18, and represents a precise volume of solution.
  • a receiving means such as a processing device or the like, not shown. 7
  • the motive power responsible for introducing solution from supply tank 22 into metering container 12 comprises any suitable vacuum pump 30 connected to a manifold conduit 32 which is blocked (not shown) at the right end thereof when looking at FIG. 1.
  • a volume limiting means for each container for limiting the volume of solution introduced therein comprises a chamber 34 having a tube 35 at one end connected to manifold conduit 32, and its opposite end connected by a conduit 36 to the upper end of container 12.
  • the chamber 34 comprises a housing for receiving a bag 38 preferably constructed'of a flexible material such as impregnated cloth, neoprene, plastic, or the like.
  • a foam rubber mat 44 as seen in FIG. 3 is provided fdr returningbag 38 to its original deflated condition.
  • the pad 40 is slidably movable within housing 34, and adjustable stops 46 are provided for limiting movement of pad 40 in one direction. It is also possible to use a flexible material such as rubber which will stretch and recover its original shape, thus obviating the need for any additional resilient pressure means. Also, the resilient pressure means may be unnecessary if, following the suction cycle during which solution is introduced into metering container 12, valve 48 in pump output tube 50 is closed, and valve 52 in tube 54 is opened so that pump 30 produces an output pressure forcing evacuation of the flexible bag 38.
  • a vent tube 56 is connected to manifold conduit 32 at a point intermediate pump 30 and the first container 12, and is provided with suitable vent valve 58 located at the junction of vent tube 56 and manifold conduit 32.
  • Vent valve 58 is of the two-way kind which is operable to close vent tube 56 to the atmosphere while opening vent tube 56 to manifold conduit 32 or, altematively, to open vent tube 56 to the atmosphere while closing vent tube 56 to manifold conduit 32.
  • a vent tube 60 is connected to each conduit 36 at a point intermediate container 12 and chamber 34, and is provided with a vent valve 62.
  • the operator initially adjusts the setting of tube 18 with the top thereof in alignment with the desired volume of solution to be metered, the valve 58 is operated so that vent tube 56 is closed to the atmosphere and opened to manifold conduit 32, valve 48 is opened, the valves 26, 52, and 62 are closed and vacuum pump 30 is energized for operation through a suction cycle.
  • the vacuum created in chamber 34 during the suction cycle causes bag 38 to expand resulting in a lowering of the pressure within container 12 and solution being forced into metering container 12 to a predetermined level above the metered volume desired.
  • Opening of vent valve 62 allows solution in container 12 to drain back through tube 18 to a level equal to the top of the tube, which is the adjusted volume setting.
  • the valve 26 is opened to deliver the metered volume of solution to any suitable solution receiving means.
  • FIG. 4 disclosed a modification of the volume limiting chamber of FIGS. 1 and 2 in which a housing 64 is provided with an expandable bellows 66 mounted therein and expandable as shown in broken lines.
  • the bellows 66 may be constructed of a stretchable rubber having a normal closed position to which it inherently returns.
  • FIG. 5 Another modification of the volume limiting chamber is disclosed in FIG. 5.
  • a bellows 68 is provided secured by any suitable means to the upper end of container 12.
  • a spring 70 in the bellows 68 urges the bellows into a normally closed position as seen in FIG. 5.
  • the spring force increases as bellows 68 expands, such force increasing until it is equal to the vacuum force.
  • solution flow into container 12 is terminated.
  • an adjustable stop 72 for limiting the expansion of the bellows 68 to a predetermined amount representing a finite volume of solution introduced into container 12.
  • the volume limiting means comprises a suction cylinder 74 of fixed displacement within which a piston 76 and sealing ring 78 affixed to one end of a piston rod 80 are reciprocally movable.
  • a vent valve 82 connected to the upper end of cylinder 74 is closed and piston 76 moved downwardly through a section stroke from its normally inoperative position shown in full lines in FIG. 6 to its dotted position, the pressure in cylinder 74 is decreased to a value below the atmospheric pressure acting on the solution in supply tank 22'. Accordingly, solution is forced from the supply tank into metering container 12' to a predetermined level B.
  • valve 82 When valve 82 is opened, the solution in metering container 12' will flow under the influence of gravity through tube 18' back into supply tank 22' until the solution level reaches the level of tube 18', designated by C.
  • the solution remaining in metering container 12 represents a precise volume of solution determined by the initial setting of tube 18'.
  • the metered solution is fed by gravity to a receiving means such as a processing device or the like.
  • the power means comprises a compressed air or gas cylinder 84 of known type having a valve 86 for controlling the release of the gas, and a gauge 88 for measuring the pressure of the released gas.
  • the gas is fed from cylinder 84 through a tube 90 to a manifold 92, the ends of which are connected to opposite ends of a power cylinder 94.
  • the piston rod 80 extends through openings in the bottom and top of cylinders 74, 94 respectively, and a piston 96 and sealing ring 98 are mounted on the end thereof.
  • Valves 100, 102 are provided in each of the arms of manifold 92.
  • valves 82, 102 With valves 82, 102 closed and valve 100 opened, manually opening valve 86 introduces gas into the upper end of cylinder 94 for driving the pistons 76, 96 and piston rod 80 downwardly to provide a suction stroke for the apparatus.
  • By closing valve 100, and opening valves 82, 102 gas pressure introduced into the lower end of cylinder 94 will return the pistons 76, 96 and piston rod 80 to this normal inoperative position as seen in FIG. 6.
  • a spring 104 may be provided interposed between piston 76 and cylinder 74 which is tensioned during the return of pistons 76, 96 and piston rod 80 to this normal inoperative position.
  • the spring 104 urges the piston 76 through a suction stroke of fixed volume.
  • a spring may be interposed between piston 96 and cylinder 94 or between both pistons 76, 96 and cylinders 74, 94 respectively.
  • the motive power means comprises any suitable vacuum pump 30".
  • the volume limiting means is shown as a manometer-type device comprising a cylinder 106 partially filled with a liquid, and a tube 108 parallel to cylinder 106 having one end connected by a bent section 110 to the bottom of cylinder 106 and its opposite end open.
  • operation of the vacuum pump 30" causes pressure in metering container 12" to decrease below the atmospheric pressure in supply tank 22".
  • the increased pressure in supply tank 22" forces solution therefrom into the me tering container 12".
  • solution in container 12" Upon turning off the vacuum pump, solution in container 12" will drain back through tube 18" until the solution reaches level C" equal to the top of the tube which is the precise volume of solution that is to be metered.
  • the liquid in cylinder 106 returns into tube 108 where it seeks the same level in both as shown in FlG. 8. Opening valve 26" delivers the metered volume of solution to a suitable solution receiving means.
  • the motive power means comprises any suitable fluid pressure source 112 such as a container of compressed air or the like shown schematically in block diagram form.
  • the fluid pressure source 112 is connected by a tube 114 and a tube 118 of manifold 116 to the inside of supply tank 22 through a seal 120 to subject the solution therein to a positive pressure.
  • the metering container 12 on the right when looking at FIG.
  • each of the metering containers 12" is provided with a seal 124 for slidably supporting a tube 126 open at each end and vertically adjustable within the container for, among other things, controlling the quantity of solution to be metered in those situations where an adjustable supply tube 18" is not provided for the metering container. Since the volume of solution in tube 126 is extremely small in comparison to the metered quantity, the error in metering volume is negligible.
  • the solution volume limiting means for this embodiment comprises the aforementioned vertically adjustable tube 126 in combination with a pressure regulating means for regulating the fluid pressure supplied to supply tank 22", and hence the height of the solution column in tube 126.
  • the pressure regulating means comprises a vertical column of liquid in an open ended cylinder 128.
  • a curved tube 130 has one end insertable within cylinder 128 and its opposite end connected by a flexible hose 132 to tube 114 and fluid pressure source 112 to permit vertical adjustment of tube 130 within cylinder 128 for regulating the fluid pressure supplied to tank 22" in a manner to be explained hereinafter.
  • the solution in metering containers 12" enters tube 126 and rises therein to a predetermined level designated H.
  • H a predetermined level
  • the pressure of the column of solution in tube 126 is equal to the regulated air pressure supplied to tank 22", preventing any further solution flow into containers 12".
  • This level may be adjusted to any desired level by raising or lowering tube 130 in cylinder 128, thereby changing the distance between the initial level F of the solution in cylinder 128 and the end G of the tube 130, and hence the value of air pressure supplied to tank 22.
  • any liquid may be used in the pressure regulating means, and a liquid having a low evaporation rate such as transformer oil or the like is preferred.
  • any suitable commercial pressure limiting valve could be substituted for cylinder 128 and tube 130 of the pressure regulating means.
  • a valve 134 can be turned off and exit valve 135 opened to permit the solution within the metering container 12" on the right as seen in FIG. 10 to flow to a processing device or the like.
  • the solution within the left container 12" that is above the level of metering tube 18" is returned to supply tank upon opening of a vent valve 136.
  • the solution remaining in metering container 12" represents the precise volume of solution which may be fed by gravity to a receiving means, such as a processing device or the like, upon opening of exit valve 26".
  • vacuum source means cooperable with said solution metering container for drawing solution from said solution supply tank into said solution metering container;
  • conduit means for interconnecting said solution metering container, said vacuum source means and said solution limiting means so that a vacuum can be effected therebetween.
  • an expandable hollow member located in said chamber, said expandable member being connected to said solution metering container for pneumatic communication therewith and being movable between deflated and inflated posi tions,
  • said vacuum source means is adapted to move s expandable member from said deflated position to s inflated position for drawing solution from said solution supply tank into said solution metering container,
  • resilient pressure means disposed in said chamber and in contact with said expandable member for urging said expandable member for movement from said inflated position to said deflated position.
  • adjustable means for selectively restricting expansion of said expandable member from said deflated position for varying the volume of solution drawn into said solution metering container from said solution supply tank by said vacuum source means.
  • pressure responsive mean sfs aid pressure responsive means having a first portion connected to said vacuum source means and said solution metering container for pneumatic communication respectively therewith and having a second portion exposed to ambient pressure
  • first vessel partially filled with a liquid, said first vessel having a first cross-sectional area and having upper and lower portions, said upper portion of said first vessel being connected to said vacuum source means and said solution metering container for pneu- 1 matic communication respectively therewith;
  • a vertically disposed second vessel having a second crosssectional area smaller than said first cross-sectional area of said first vessel and having upper and lower portions, said upper portion of said second vessel being open to expose the interior of said second vessel to ambient pressure;
  • vacuum source means cooperable with said solution metering container for drawing solution from said solution supply tank into said solution metering container;
  • conduit means for interconnecting said vacuum source ,means and said solution metering container so that a vacuum can be effected therebetween;
  • solu tion limiting means includes: 1
  • said vacuum source means is adapted to move said expandable member from said deflated position to said inflated position for drawing a predetermined volume of solution from said solution supply tank into said solution metering container.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Fluid Mechanics (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)
US860837A 1969-09-24 1969-09-24 Solution metering apparatus Expired - Lifetime US3602607A (en)

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US86083769A 1969-09-24 1969-09-24

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US (1) US3602607A (enrdf_load_stackoverflow)
JP (1) JPS4822450B1 (enrdf_load_stackoverflow)
CA (1) CA919914A (enrdf_load_stackoverflow)
DE (1) DE2047178A1 (enrdf_load_stackoverflow)
FR (1) FR2062987B1 (enrdf_load_stackoverflow)
GB (1) GB1329727A (enrdf_load_stackoverflow)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3750692A (en) * 1972-01-11 1973-08-07 E Tibbs Chest drainage system
US4524801A (en) * 1981-12-04 1985-06-25 Colgate-Palmolive Company Apparatus for the selection, metering and delivery of liquids, in particular treatment liquids for industrial laundry washers
GB2155553A (en) * 1984-03-06 1985-09-25 Tri Vac Dispense Limited Fluid transfer and fluid dispensers
US4964784A (en) * 1985-08-22 1990-10-23 Herman Vanderheyden Volumetric dosing apparatus
NL9101736A (nl) * 1991-10-17 1993-05-17 Alfa Laval Agri Bv Apparaat voor het afgeven van bepaald volume vloeistof.
US5357306A (en) * 1990-05-23 1994-10-18 Eastman Kodak Company Photographic processing apparatus
US5738499A (en) * 1997-01-27 1998-04-14 Evans; Gary W. Automotive fluid extraction and delivery device
US20110108153A1 (en) * 2009-11-09 2011-05-12 Chemflow Systems, Inc. Apparatus and method for rapidly adjustable liquid blending ratio
US20130079995A1 (en) * 2011-09-23 2013-03-28 Ford Global Technologies, Llc Dual-chamber impact detector
US9435677B1 (en) * 2015-03-12 2016-09-06 Diamond Shine, Inc. Liquid containment and measurement apparatus and method
WO2023200754A1 (en) * 2022-04-11 2023-10-19 Ag Ip Holding, Llc Pump with evacuated driver

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2326686A1 (fr) * 1975-09-30 1977-04-29 Commissariat Energie Atomique Doseur automatique d'un volume predetermine de liquide
DK194680A (da) * 1980-05-01 1981-11-02 Proteinkemisk Inst Tilknyttet Fremgangsmaade og apparat til dosering af vaeske

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR688143A (fr) * 1930-01-13 1930-08-19 Appareil distributeur de lait
FR1572337A (enrdf_load_stackoverflow) * 1968-04-05 1969-06-27

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3750692A (en) * 1972-01-11 1973-08-07 E Tibbs Chest drainage system
US4524801A (en) * 1981-12-04 1985-06-25 Colgate-Palmolive Company Apparatus for the selection, metering and delivery of liquids, in particular treatment liquids for industrial laundry washers
GB2155553A (en) * 1984-03-06 1985-09-25 Tri Vac Dispense Limited Fluid transfer and fluid dispensers
US4964784A (en) * 1985-08-22 1990-10-23 Herman Vanderheyden Volumetric dosing apparatus
US5357306A (en) * 1990-05-23 1994-10-18 Eastman Kodak Company Photographic processing apparatus
NL9101736A (nl) * 1991-10-17 1993-05-17 Alfa Laval Agri Bv Apparaat voor het afgeven van bepaald volume vloeistof.
US5738499A (en) * 1997-01-27 1998-04-14 Evans; Gary W. Automotive fluid extraction and delivery device
US20110108153A1 (en) * 2009-11-09 2011-05-12 Chemflow Systems, Inc. Apparatus and method for rapidly adjustable liquid blending ratio
US8646494B2 (en) * 2009-11-09 2014-02-11 Chemflow Systems, Inc. Apparatus and method for rapidly adjustable liquid blending ratio
WO2011075282A1 (en) * 2009-12-16 2011-06-23 Chemflow Systems, Inc. Apparatus and method for rapidly adjustable liquid blending ratio
CN102712411A (zh) * 2009-12-16 2012-10-03 化学液系统股份有限公司 可快速调整的液体比例混合装置及其方法
US20130079995A1 (en) * 2011-09-23 2013-03-28 Ford Global Technologies, Llc Dual-chamber impact detector
US8577555B2 (en) * 2011-09-23 2013-11-05 Ford Global Technologies, Llc Dual-chamber impact detector
US9435677B1 (en) * 2015-03-12 2016-09-06 Diamond Shine, Inc. Liquid containment and measurement apparatus and method
WO2023200754A1 (en) * 2022-04-11 2023-10-19 Ag Ip Holding, Llc Pump with evacuated driver

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Publication number Publication date
GB1329727A (en) 1973-09-12
CA919914A (en) 1973-01-30
FR2062987A1 (enrdf_load_stackoverflow) 1971-07-02
FR2062987B1 (enrdf_load_stackoverflow) 1974-12-20
JPS4822450B1 (enrdf_load_stackoverflow) 1973-07-06
DE2047178A1 (de) 1971-04-01

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