US2745585A - Automatic filling apparatus for liquid containers - Google Patents

Automatic filling apparatus for liquid containers Download PDF

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US2745585A
US2745585A US26739052A US2745585A US 2745585 A US2745585 A US 2745585A US 26739052 A US26739052 A US 26739052A US 2745585 A US2745585 A US 2745585A
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Prior art keywords
liquid
valve
nozzle
relay
air
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Lindars Herman
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
    • B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
    • B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
    • B67C3/22—Details
    • B67C3/28—Flow-control devices, e.g. using valves
    • B67C3/282—Flow-control devices, e.g. using valves related to filling level control
    • B67C3/283—Flow-control devices, e.g. using valves related to filling level control using pressure sensing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B3/26—Methods or devices for controlling the quantity of the material fed or filled
    • 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
    • Y10T137/7287—Liquid level responsive or maintaining systems
    • Y10T137/7358—By float controlled valve
    • Y10T137/7368—Servo relay operation of control
    • Y10T137/7371—Fluid pressure

Definitions

  • 'The'pr'esent invention aims at ensuring thatany container is 'fill'edto a predetermined limit of its actual capacity irrespective of itsnominal' sizeand at the same time prevents spillage of'the liquid.
  • sponsive means connected with-said tube and regulating means operated bysaid pressure responsive means "for interrupting 'thehow ofliquid through said conduit when the predeterminedliquid-levelin the container is reached.
  • the conduit includes a filling nozzle rigidly secured to said air supply tube to form a single unit therewith and the means for interrupting the flow of liquid through said conduit comprises an electro-rnagnetically operated valve.
  • the pressure responsive means is a bellows which is arranged to operate a relay connected in circuit with the electro-magnetic means of the valve, which, in a preferred form, is spring biassed towards its closed position and is normally kept open against the action of the spring by means of a lever adapted to be released by operation of the electro-magnet.
  • the apparatus comprises a nozzle 1 for filling a container 2 with liquid which is connected to the liquid supply line 3 through a shut-off valve 4 which is spring-loaded to the closed position.
  • the valve 4 is held open by means of a lever 5 which is pivoted at 6 adjacent the free end of the valve stem 7 and is retained in the valve opening position by means of a latch 8 which engages the free end of the lever 5.
  • the latch carries an armature 9 for an electromagnet 10 which is energised from supply mains 11 through a pair of electro-magnetic relay contacts 12a and 12b which close when the relay 13 is energised.
  • the circuit to the relay 13 comprises a pair of contacts 14a and 14b mounted adjacent a tail piece 15 on the shut-off valve lever 5 and adapted to be closed when the lever 5 is latched to hold the valve 4 open. These contacts 14a and 14b are connected in series with a second pair of normally closed contacts 16a and 16b which are arranged to be opened by a bellows or like pressure responsive relay 17.
  • the relay 13 controlling the circuit to the electro-magnet 10 is thus normally energised so that the latch 8 is positively held in engagement with the lever 5.
  • a spring 18 biases the latch 8 to the release position so that when the electro-magnet 10 becomes de-energised ice .;2 the shut-ofi valve lcloses under th'e' ac'tion of its loading spring'1'9.
  • -acollar 23Whiohfis Surrounding'thenozzle 1 and the lower end of the an 15 tube 20 is -acollar 23Whiohfis adjustably-' clamped 'to' the nozzle 1 to define the extent' to which the air tube 20 projects into the container 2.
  • the co1lar' 23' is adapted toreston-"the rim"l4 of theifilling apertureZ25 in the 4 container '1 in 'sucha manner that it 'doesnot'cons-tit-ute 20 an airtight seal.
  • 'the lower surfaceof the collar "23 may be provided 1 with flutes or corrugations (not shown) to ensure 'that no-sealcan befor-me'd.
  • the shut-off valve 4 When filling is to be commenced, the shut-off valve 4 is opened by engaging the lever 5 with the latch 8, thereby causing the contacts 14a and 14b operated by the tailpiece 15 on the lever 5 to close.
  • the electro-magnetic 40 relay 13 is thereupon energised to close its contacts 12a and 12b and so in turn to energise the electro-magnet 10 which holds the latch 8 in engagement with the shut-ofi valve lever 5. Liquid thereupon flows into the container 2 and the level rises therein.
  • the apparatus functions to ensure the automatic cut-oil of the supply of liquid to a container 2 when the level of the liquid therein rises above the level of the open end of the air tube 20 by an amount sufficient to constitute a seal against the relatively low air pressure in the air tube 20.
  • the amount by which 5 the level must rise to elfect a cut-ofi of the liquid supply is thus partly dependent on the air pressure below the needle valve 22 and the sensitivity of the bellows 17 or other pressure responsive relay means.
  • the air tube can be separated from the liquid nozzle and placed at a different part of the containers where errors due to splashing or turbulence in the vicinity of the nozzle are reduced to a minimum.
  • any inert gas may be used in place of air in the air tube.
  • air is to be understood as including any form of gas.
  • the circuit for controlling the shut-cit valve in the liquid supply line may be modified in any suitable manner and may be partially or wholly of a pneumatic or hydraulic nature if preferred.
  • the bellows may also be replaced by a diaphragm or even a piston and cylinder type of motor, if desired.
  • the invention is applicable to the filling of all liquid containers including those which are permanently connected to a liquid supply line for intermittent filling, in which case the air tube may also be a permanent fitting. Should it be necessary to vary the level of liquid discharged into such containers, provision may be made for the adjustment of the height of the open end of the air tube in the manner described above.
  • Apparatus for supplying liquid to a receptacle up to a predetermined level therein comprising a liquid discharge nozzle, a valve for controlling the liquid flow through the nozzle, a valve operating lever resiliently biased to the closed position, a detent engageable with the operating lever to hold it in the open position, an electromagnet for holding the detent in its engaged position, an air pressure pipe connected to said nozzle and terminating at a point corresponding to the said predetermined level, a single pneumatic relay communicating with the said pipe, and contacts controlled by said relay for de-energising the electromagnet on operation of the relay by a rise in air pressure in the pipe.
  • Apparatus for supplying liquid to a receptacle up to a predetermined level therein comprising a liquid discharge nozzle, a valve for controlling the liquid flow through the nozzle, 21 valve operating lever resiliently biased to the closed position, a detent engageable with the operating lever to hold it in the open position, an electromagnet for holding the detent in its engaged position, an air pressure pipe connected to said nozzle and terminating at a point corresponding to the said predetermined level, a single pneumatic.relay'communicating with the said pipe, at first pair of contacts adapted to be opened by the pneumatic relay on a rise in pressure in the pipe, a second pair of contacts in series with the said first pair and adapted to be closed by the valve operating lever when engaged by the detent, and an electromagnetic relay in the circuit of said contacts for controlling the energisation of the detent electromagnet when the valve operating lever is moved to the open position.
  • Apparatus for supplying liquid to a receptacle to a predetermined level comprising a liquid discharge nozzle, a valve for controlling the liquid flow through the nozzle, a valve operating lever resiliently biased to the closed position, a detent engageable with'the operating lever to hold it in the open position, an electromagnet for holding the detent in its engaged position, an air pressure pipe connected to said nozzle and terminating at a point corresponding to said predetermined level, a single pneumatic relay communicating with said pipe, and means controlled by the pneumatic relay and responsive to a rise in pressure in the air pressure pipe for deenergizing said electromagnet to close said liquid control valve.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)

Description

y 5, 1956 H. LINDARS 2,745,585
AUTOMATIC FILLING APPARATUS FOR LIQUID CONTAINERS Filed Jan. 21, 1952 United States Patent 'AUTOMATIC'FILLING APPARATUS FOR LIQUID CONTAINERS a-HermanLindars, Sheflield,:England Application'January21,I952, SerialNo; 267,390
Claims @riority,1applicafiorr.Great diritain February r20,- 1951 3. Claims. ((113226-5127) This invention relates to I apparatus for supplying liquid to containers-mid ithas for an object '10 provide apparatus whereby can "be 'supplied to a container to a predetermined of its capacity.
'The'pr'esent invention aims at ensuring thatany container is 'fill'edto a predetermined limit of its actual capacity irrespective of itsnominal' sizeand at the same time prevents spillage of'the liquid.
sponsive means connected with-said tube and regulating means operated bysaid pressure responsive means "for interrupting 'thehow ofliquid through said conduit when the predeterminedliquid-levelin the container is reached.
Preferably, the conduit includes a filling nozzle rigidly secured to said air supply tube to form a single unit therewith and the means for interrupting the flow of liquid through said conduit comprises an electro-rnagnetically operated valve.
Advantageously, the pressure responsive means is a bellows which is arranged to operate a relay connected in circuit with the electro-magnetic means of the valve, which, in a preferred form, is spring biassed towards its closed position and is normally kept open against the action of the spring by means of a lever adapted to be released by operation of the electro-magnet.
A preferred embodiment of the invention which is illustrative only thereof, will now be described with reference to the accompanying drawing.
The apparatus comprises a nozzle 1 for filling a container 2 with liquid which is connected to the liquid supply line 3 through a shut-off valve 4 which is spring-loaded to the closed position. The valve 4 is held open by means of a lever 5 which is pivoted at 6 adjacent the free end of the valve stem 7 and is retained in the valve opening position by means of a latch 8 which engages the free end of the lever 5. The latch carries an armature 9 for an electromagnet 10 which is energised from supply mains 11 through a pair of electro-magnetic relay contacts 12a and 12b which close when the relay 13 is energised. The circuit to the relay 13 comprises a pair of contacts 14a and 14b mounted adjacent a tail piece 15 on the shut-off valve lever 5 and adapted to be closed when the lever 5 is latched to hold the valve 4 open. These contacts 14a and 14b are connected in series with a second pair of normally closed contacts 16a and 16b which are arranged to be opened by a bellows or like pressure responsive relay 17. The relay 13 controlling the circuit to the electro-magnet 10 is thus normally energised so that the latch 8 is positively held in engagement with the lever 5. A spring 18 biases the latch 8 to the release position so that when the electro-magnet 10 becomes de-energised ice .;2 the shut-ofi valve lcloses under th'e' ac'tion of its loading spring'1'9.
[he bellows 17*is open to atmosphere-on one side 17a and entire otherside 17b is connected to" arela'tiv'ely 5 narrow bore air tube 20 whiehterminateswt its lower end "21 close to, and *slightly above, -"the mouth or "the liquid nozzle-.1. Thelower'portion of thisair tube" 20 is secured to or formed integrally with the liquid "nozzle 1,
Whilst the upper end above the 'connectiomtothe bellows 10 I7 is provided =witha needle-'valve 22 for= controlling' the flow of air throughthetubedo. iiBeyon'd theneedle-valve 22, connection is -made' to a low'pressure air supply inot -shown).
Surrounding'thenozzle 1 and the lower end of the an 15 tube 20 is -acollar 23Whiohfis adjustably-' clamped 'to' the nozzle 1 to define the extent' to which the air tube 20 projects into the container 2. The co1lar' 23'is adapted toreston-"the rim"l4 of theifilling apertureZ25 in the 4 container '1 in 'sucha manner that it 'doesnot'cons-tit-ute 20 an airtight seal. If desired, 'the lower surfaceof the collar "23 may be provided 1 with flutes or corrugations (not shown) to ensure 'that no-sealcan befor-me'd.
In operation, the collar 23, T is adjusted on 5 the 1 liquid nozzle "-1 so that the "air tube 20 =projec'ts mm 1 the con- 25 tainer 2slightly 'bel'owthe leveliL to' which it -is to be filled. "The amGufifbY-Whibh' the open.:end -21'of the'ti1be $20 I lies "below this -level :wm 'depend ou the calibration of the bellows 17. T he liquid' nozzle l with the attached air: pipe 20 is -1hen inserted into -the container"2' and-' the needle valve 22 in the air tube'fill is'opened toallow air fto leakidown the tube 20; arid-I'escape through the filling orifice is of the container' 2. since -theair 'is thus free to escape, there is fino fidifierential pressure ileve'loped across the bellows 17 and the contacts 16a and 16b operated thereby remain closed.
When filling is to be commenced, the shut-off valve 4 is opened by engaging the lever 5 with the latch 8, thereby causing the contacts 14a and 14b operated by the tailpiece 15 on the lever 5 to close. The electro-magnetic 40 relay 13 is thereupon energised to close its contacts 12a and 12b and so in turn to energise the electro-magnet 10 which holds the latch 8 in engagement with the shut-ofi valve lever 5. Liquid thereupon flows into the container 2 and the level rises therein.
When the liquid level reaches the bottom of the air tube 20 an air seal is formed and pressure begins to build up in the air tube 20 between the needle valve 22 and the lower end of the tube 20. This pressure appears across the bellows 17 and in a short time builds up to a sufiicient value to operate the bellows 17 and so open the normally closed contacts 16a and 16b controlled thereby. These contacts break the circuit to the electro-magnetic relay 13 which thereupon releases its contacts 12a and 12b to open the circuit of the electro-magnet 10. The latch 8 is then returned to its free position by the spring 18 and releases the shut-off valve lever 5. The supply of liquid is thereupon cut off by closure of the valve 4 under the action of its spring 19.
It will be seen that the apparatus functions to ensure the automatic cut-oil of the supply of liquid to a container 2 when the level of the liquid therein rises above the level of the open end of the air tube 20 by an amount sufficient to constitute a seal against the relatively low air pressure in the air tube 20. The amount by which 5 the level must rise to elfect a cut-ofi of the liquid supply is thus partly dependent on the air pressure below the needle valve 22 and the sensitivity of the bellows 17 or other pressure responsive relay means.
Various modifications of the above arrangement can 7 be made as will be understood. Thus, for example, the air tube can be separated from the liquid nozzle and placed at a different part of the containers where errors due to splashing or turbulence in the vicinity of the nozzle are reduced to a minimum. Where the apparatus is to be used for filling containers with chemicals under controlled atmosphere conditions, any inert gas may be used in place of air in the air tube. In this specification, the term air is to be understood as including any form of gas.
The circuit for controlling the shut-cit valve in the liquid supply line may be modified in any suitable manner and may be partially or wholly of a pneumatic or hydraulic nature if preferred. The bellows may also be replaced by a diaphragm or even a piston and cylinder type of motor, if desired.
The invention is applicable to the filling of all liquid containers including those which are permanently connected to a liquid supply line for intermittent filling, in which case the air tube may also be a permanent fitting. Should it be necessary to vary the level of liquid discharged into such containers, provision may be made for the adjustment of the height of the open end of the air tube in the manner described above.
What I claim:
1. Apparatus for supplying liquid to a receptacle up to a predetermined level therein comprising a liquid discharge nozzle, a valve for controlling the liquid flow through the nozzle, a valve operating lever resiliently biased to the closed position, a detent engageable with the operating lever to hold it in the open position, an electromagnet for holding the detent in its engaged position, an air pressure pipe connected to said nozzle and terminating at a point corresponding to the said predetermined level, a single pneumatic relay communicating with the said pipe, and contacts controlled by said relay for de-energising the electromagnet on operation of the relay by a rise in air pressure in the pipe.
2. Apparatus for supplying liquid to a receptacle up to a predetermined level therein comprising a liquid discharge nozzle, a valve for controlling the liquid flow through the nozzle, 21 valve operating lever resiliently biased to the closed position, a detent engageable with the operating lever to hold it in the open position, an electromagnet for holding the detent in its engaged position, an air pressure pipe connected to said nozzle and terminating at a point corresponding to the said predetermined level, a single pneumatic.relay'communicating with the said pipe, at first pair of contacts adapted to be opened by the pneumatic relay on a rise in pressure in the pipe, a second pair of contacts in series with the said first pair and adapted to be closed by the valve operating lever when engaged by the detent, and an electromagnetic relay in the circuit of said contacts for controlling the energisation of the detent electromagnet when the valve operating lever is moved to the open position.
3. Apparatus for supplying liquid to a receptacle to a predetermined level, comprising a liquid discharge nozzle, a valve for controlling the liquid flow through the nozzle, a valve operating lever resiliently biased to the closed position, a detent engageable with'the operating lever to hold it in the open position, an electromagnet for holding the detent in its engaged position, an air pressure pipe connected to said nozzle and terminating at a point corresponding to said predetermined level, a single pneumatic relay communicating with said pipe, and means controlled by the pneumatic relay and responsive to a rise in pressure in the air pressure pipe for deenergizing said electromagnet to close said liquid control valve.
References Cited in the file of this patent UNITED STATES PATENTS Beals Oct. 9,
US26739052 1951-02-20 1952-01-21 Automatic filling apparatus for liquid containers Expired - Lifetime US2745585A (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2957502A (en) * 1958-02-28 1960-10-25 August L Kraft Vacuum casting equipment
US3182691A (en) * 1961-10-12 1965-05-11 Pneumatic Scale Corp Container filling method and machine
US3207189A (en) * 1962-12-17 1965-09-21 Pneumatic Scale Corp Container filling machine
US3357461A (en) * 1965-09-30 1967-12-12 Meyer Geo J Mfg Co Automatic container filling control method and apparatus
US3380491A (en) * 1965-03-26 1968-04-30 Emco Wheaton Universal electric nozzle
US3494387A (en) * 1966-05-13 1970-02-10 Exxon Research Engineering Co Liquid delivery device
US3516455A (en) * 1967-05-01 1970-06-23 Automatic Sprinkler Corp Container-filling apparatus
US3580298A (en) * 1969-09-12 1971-05-25 Pneumatic Scale Corp Container filling machine
US3760852A (en) * 1971-06-15 1973-09-25 Horix Mfg Co Container filling apparatus with level-sensing shut-off
EP0065117A2 (en) * 1981-05-05 1982-11-24 BASF Aktiengesellschaft Automatically closing tap
US4860804A (en) * 1986-12-23 1989-08-29 Mitsubishi Jukogyo Kabushiki Kaisha Filled amount control system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1242313A (en) * 1916-08-02 1917-10-09 William J Beals Bottle-filling machine.
US1917364A (en) * 1932-01-20 1933-07-11 Robert J Gallagher Control device for liquid dispensing apparatus
US2209219A (en) * 1940-07-23 Automatic cut-off nozzle for
US2222923A (en) * 1939-07-03 1940-11-26 Imp Brass Mfg Co Fluid filling nozzle
US2326415A (en) * 1940-11-23 1943-08-10 Buel F Titus Automatic liquid dispensing device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2209219A (en) * 1940-07-23 Automatic cut-off nozzle for
US1242313A (en) * 1916-08-02 1917-10-09 William J Beals Bottle-filling machine.
US1917364A (en) * 1932-01-20 1933-07-11 Robert J Gallagher Control device for liquid dispensing apparatus
US2222923A (en) * 1939-07-03 1940-11-26 Imp Brass Mfg Co Fluid filling nozzle
US2326415A (en) * 1940-11-23 1943-08-10 Buel F Titus Automatic liquid dispensing device

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2957502A (en) * 1958-02-28 1960-10-25 August L Kraft Vacuum casting equipment
US3182691A (en) * 1961-10-12 1965-05-11 Pneumatic Scale Corp Container filling method and machine
US3207189A (en) * 1962-12-17 1965-09-21 Pneumatic Scale Corp Container filling machine
US3380491A (en) * 1965-03-26 1968-04-30 Emco Wheaton Universal electric nozzle
US3357461A (en) * 1965-09-30 1967-12-12 Meyer Geo J Mfg Co Automatic container filling control method and apparatus
US3494387A (en) * 1966-05-13 1970-02-10 Exxon Research Engineering Co Liquid delivery device
US3516455A (en) * 1967-05-01 1970-06-23 Automatic Sprinkler Corp Container-filling apparatus
US3580298A (en) * 1969-09-12 1971-05-25 Pneumatic Scale Corp Container filling machine
US3760852A (en) * 1971-06-15 1973-09-25 Horix Mfg Co Container filling apparatus with level-sensing shut-off
EP0065117A2 (en) * 1981-05-05 1982-11-24 BASF Aktiengesellschaft Automatically closing tap
EP0065117A3 (en) * 1981-05-05 1983-04-27 Basf Aktiengesellschaft Automatically closing tap
US4860804A (en) * 1986-12-23 1989-08-29 Mitsubishi Jukogyo Kabushiki Kaisha Filled amount control system

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