EP1601590B1 - Appareil de commande de decharge de materiau fluide - Google Patents

Appareil de commande de decharge de materiau fluide Download PDF

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Publication number
EP1601590B1
EP1601590B1 EP04715945A EP04715945A EP1601590B1 EP 1601590 B1 EP1601590 B1 EP 1601590B1 EP 04715945 A EP04715945 A EP 04715945A EP 04715945 A EP04715945 A EP 04715945A EP 1601590 B1 EP1601590 B1 EP 1601590B1
Authority
EP
European Patent Office
Prior art keywords
container
valve
actuator
bellows
outlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP04715945A
Other languages
German (de)
English (en)
Other versions
EP1601590A1 (fr
Inventor
Edward John Piepereit
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Matcon R&D Ltd
Original Assignee
Matcon R&D Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB0304693A external-priority patent/GB0304693D0/en
Priority claimed from GB0304692A external-priority patent/GB0304692D0/en
Application filed by Matcon R&D Ltd filed Critical Matcon R&D Ltd
Publication of EP1601590A1 publication Critical patent/EP1601590A1/fr
Application granted granted Critical
Publication of EP1601590B1 publication Critical patent/EP1601590B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/54—Gates or closures
    • B65D90/62—Gates or closures having closure members movable out of the plane of the opening
    • B65D90/626—Gates or closures having closure members movable out of the plane of the opening having a linear motion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/54—Large containers characterised by means facilitating filling or emptying
    • B65D88/64—Large containers characterised by means facilitating filling or emptying preventing bridge formation
    • B65D88/66—Large containers characterised by means facilitating filling or emptying preventing bridge formation using vibrating or knocking devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2590/00—Component parts, details or accessories for large containers
    • B65D2590/54—Gates or closures
    • B65D2590/542—Gates or closures special sealing means or means for improving sealing

Definitions

  • the invention relates to apparatus, according to the preamble of claim 1, for controlling discharge of flowable material from a container thereof.
  • Apparatus for controlling discharge of flowable material from a container which generally comprises a part for contacting the valve of the container which is under the control of an actuator, the actuator functioning to bring the part into contact with the valve and move the valve from its seat, usually upwardly into the container to initiate product flow.
  • a known form of actuator in this type of device is a pneumatically operated bellows.
  • a problem which has been encountered with this type of actuator is that it is difficult to achieve a fine degree of control, the bellows itself essentially having two positions, inflated or deflated.
  • the nature of the flowable materials which apparatus of this kind must handle varies widely and can include virtually any product which is flowable, from powders for use in the pharmaceutical and foodstuffs industries to friable products such as products in tablet form.
  • WO 90/08724 discloses apparatus, according to the preamble of claim 1, for controlling discharge of flowable material from a container thereof through an outlet obturated by a valve which is raisable into the container for material flow through the outlet, the apparatus comprising a part for contacting the valve, operatively connected to an actuator, and position sensing means for sensing the position of the actuator or the valve. There is a limited control means for the actuator.
  • the present invention seeks to mitigate problems such as those referred to above.
  • Apparatus for controlling discharge of flowable material from a container thereof through an outlet obturated by a valve which is raisable into the container for material flow through the outlet comprises a part for contacting the valve, operatively connected to an actuator, and position sensing means for sensing the position of the actuator or the valve, the actuator being located below the valve, control means comprising a modulating valve device, and the modulating valve device is under the control of the position sensing means for determining the position and/or speed of the actuator.
  • the actuator comprises a pneumatically operated bellows and the position sensing means may comprise a linear position sensor adapted to sense the position of the bellows.
  • the linear position sensor may be adapted to sense the position of a guide member of the bellows.
  • the linear position sensor may be adapted to sense the distance between the upper and lower surfaces of the bellows.
  • the linear position sensor may comprise any suitable device such as, but not limited to, a linear potentiometer, a bar code device, an LVDT, a rectilinear displacement transducer or a draw wire sensor.
  • the guide member is located within the bellows. This protects the mechanism from ingress of contaminating material, allows for greater accuracy in sensing and saves space.
  • the guide member which triggers the sensor may comprise a guide rod slidable within a guide tube, or a guide tube, in which a guide rod is slidable.
  • the guide member may comprise a double telescopic guide device. This is particularly useful where the height of the device must be restricted, for example, in a tablet hopper.
  • the apparatus comprises control means for controlling the position and the speed of movement of the actuator in response to position information from the position sensing means.
  • the actuator comprises a pneumatic operated bellows and the control means comprises a pneumatic modulating valve.
  • the pneumatic modulating valve may be controlled by manual means or by a logic controller.
  • the apparatus can be operated in a better controlled way as compared to prior apparatus, making it particularly suitable for use in discharging friable products.
  • a slower lift/lower speed e.g. 5-10 mm/sec
  • the air supply can be increased/decreased to maintain the lift/lower speed automatically. This provides a much more uniform discharge rate and a more controlled feed to downstream process equipment.
  • the stroke of the actuator is limited solely by the control means.
  • tie-rods it has been necessary to use tie-rods to limit the actuator stroke. With the present arrangement the tie-rods can be omitted thereby making the apparatus more economical.
  • the position sensing means may be adapted to sense when the actuator is fully lowered and/or when the valve is in the obturating position. This is particularly important when handling toxic or otherwise dangerous substances which might become exposed to operators.
  • the apparatus may include means to cause the valve to vibrate in order to enhance product flow. Where this has been the case it has been necessary to provide means to isolate the vibrating valve as far as possible from the actuator and associated structures to prevent noise and damage thereto.
  • the actuator is a bellows, the actuator itself provides damping of the vibration so that additional damping components can be omitted, thereby saving costs.
  • valve comprises a cone valve
  • bellows are preferably mounted inside the valve. Having an internally mounted bellows means that the bellows can be more robust and so less prone to damage and failure.
  • the apparatus may be included as part of the outlet structure of a suitable container which is therefore self-emptying or alternatively can be provided in the form of a discharge station for initiating product flow from a container including a simple valve.
  • valve and/or outlet of the container may be adapted to prevent damage to the flowable material.
  • the valve and/or outlet may have rounded edges, and/or the valve may comprise a soft edge seal.
  • the invention further provides apparatus for controlling discharge of flowable material from a container thereof through an outlet obturated by a valve which is raisable into the container for material flow through the outlet and which vibrates to assist product flow, the apparatus comprising a part for contacting the valve, operatively connected to an actuator, vibration of the valve being isolated by the actuator.
  • FIG. 1 there is illustrated the outlet part 1 of a container in the form of an inverted frusto-conical hopper.
  • a frusto-conical valve member 2 rests on the inner surface 3 of the outlet part 1.
  • a circular seal member 2a is mounted at the lower (as viewed) edge of the valve member 2.
  • the valve member 2 is raised so that product can flow through the annular space created between the valve member 2 and the inner surface 3 of the outlet part 1. Raising of the valve member 2 is accomplished by an actuator 4 in the form of a pneumatically operated bellows device which comprises a cylindrical, resiliently expandable body 6 mounted between a lower plate 7 and an upper plate 8.
  • the lower plate 7 is attached via support frame 9 to the inner surface 3 of the outlet part 1.
  • the support frame 9 is constructed such that it does not appreciably impede product flow through the outlet.
  • a cylindrical guide tube 10 is fixedly mounted in the centre of the lower plate 7.
  • the guide tube 10 extends into the space between the lower plate 7 and upper plate 8 and also some distance below the lower plate 7.
  • the bottom end (as viewed) of the tube 10 is closed.
  • a rod 11 is slidably mounted within the guide tube 10 and extends from the guide tube 10 upwardly through the upper plate 8 to a carrier frame 12 which is bolted to the top surface of the upper plate 8.
  • the guide tube 10 is fixed to the lower plate 7 and the rod 11 is fixed (via the carrier frame 12) to the upper plate 8.
  • upper plate 8 As viewed in the drawing, to the left side of upper plate 8 an anti-rotation bracket 13 is fixed. At its right hand side as viewed, upper plate 8 is provided with a circular aperture 15 which corresponds in position and size to a similar aperture 16 in lower plate 7.
  • a tie-rod 17 passes through both apertures. The ends 18 of the tie-rod 17 are dimensioned to be wider than the apertures 15,16. The tie-rod 17 is slidable in the apertures 15,16. Three such tie rods are equispaced around the bellows.
  • a plate 20 is fixed to which is attached a vibrator device 21, as is well known in the art.
  • a support ring 22 is attached to the inner surface of the valve member 2.
  • apparatus 23 for controlling discharge of flowable material from a container thereof according to the invention, the apparatus 23 comprising a part 8 for contacting the valve member 2, operatively connected to an actuator 4, and position sensing means 25 for sensing the position of the actuator.
  • the apparatus is greatly simplified when compared with the apparatus of Figure 1 , still taking the form of the outlet part of a container such as an I.B.C.
  • the actuator 4 still comprises a lower plate 7, upper plate 8 and extendable body 6 with a guide tube 10 attached to the lower plate 7 in which is slidably mounted guide rod 11 attached to upper plate 8.
  • Lower plate 7 is attached via support frame 9 to the inner surface 3 of the outlet part 1.
  • rod 11 has a central blind bore 26 extending about three quarters of the way along its length.
  • Guide tube 10 includes a substantially vertically disposed rod 27 which passes up into the bore 26 of the guide rod 11.
  • a bar code is printed on the outer surface of the vertical rod 27 and a bar code reading device 28 is mounted at the mouth of the bore 26 of the guide rod 11.
  • a conduit 29 is provided for electrical connection of the position sensing means 25 to a power supply and control means such as a computer which may also control directly the pneumatic feed to the actuator 4.
  • the position sensing means 25 could comprise a linear potentiometer which is a well known device which will not be described further here.
  • a particularly compact device is a draw-wire sensor consisting of a spring-retractable wire 33 wound onto a reel 34, like a tape measure (see Figure 4 ).
  • An electronic encoder monitors the revolutions (or parts of revolutions) and interprets them as linear movement.
  • Such a device is particularly useful in apparatus according to the invention where the actuator 4 is of the bellows type, where the shallow slopes of the hopper prevent use of a taller device.
  • the height of the device is further reduced by means of a double telescopic guide device 35.
  • the apparatus 23 comprise control means (not shown) for controlling the position and the speed of movement of the actuator in response to position information from the position sensing means 25.
  • the control means comprises a pneumatic modulating valve, for example, a 0-10V modulating valve.
  • the modulating valve may be controlled manually or by a logic controller.
  • the position sensing means 25 may be adapted so that it can sense when actuator 4 is fully lowered and/or when the valve member 2 is in the obturating position.
  • the discharge station comprises a frusto-conical hopper 31 in which the apparatus 23 is mounted on support frame 9.
  • the apparatus 23 includes lower plate 7 and upper plate 8 and resiliently extendable body 6, lower plate 7 being attached to support frame 9.
  • upper plate 8 carries a conical probe part 32 in which is mounted a vibrator 21.
  • the probe 32 can be extended upwards by means of the actuator 4 to contact the inner surface of a valve of a container for flowable material (not shown) to move the valve upwardly for product flow.
  • the position sensing means 25 comprises a linear potentiometer although a bar code reading device could be used as described in the previous embodiment.
  • apparatus provides a significant advantage over the prior available devices.
  • the apparatus can be manufactured significantly more cheaply and quickly than prior devices because tie-rods are rendered unnecessary.
  • vibration isolation devices are not required because, with the actuator stroke now limited by pneumatic means, the bellows actuator also functions as the vibration isolator.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Claims (24)

  1. Appareil destiné à contrôler la décharge d'un matériau fluide à partir d'un récipient le contenant, à travers une sortie obturée par une soupape du récipient (2) pouvant être soulevée dans le récipient pour permettre un écoulement du matériau à travers la sortie, l'appareil (23) comprenant :
    une partie (8) destinée à contacter la soupape, connectée en service à un moyen d'actionnement (4), le moyen d'actionnement (4) comprenant une plaque inférieure (7), un soufflet (6) et une partie supérieure (32) pour soulever la soupape du récipient (2) ;
    un moyen capteur de la position (25), pour détecter la position du moyen d'actionnement (4) de la soupape du récipient (2) ; et
    un moyen de commande pour contrôler la position du moyen d'actionnement (4) en réponse aux informations sur la position transmises par le moyen capteur de la position (25), caractérisé en ce que :
    le soufflet est un soufflet à actionnement pneumatique ;
    le moyen de commande comprend un dispositif de soupape de modulation pneumatique, et en ce que le moyen de commande contrôle en outre la vitesse du déplacement du moyen d'actionnement (4) en réponse aux informations sur la position transmises par le moyen capteur de la position (25).
  2. Appareil selon la revendication 1, caractérisé en ce que le moyen capteur de la position (25) comprend un capteur de position linéaire adapté pour détecter la position du soufflet (6).
  3. Appareil selon la revendication 2, caractérisé en ce que le capteur de position linéaire (25) est adapté pour détecter la position d'un élément de guidage (10) du soufflet (6).
  4. Appareil selon la revendication 3, caractérisé en ce que le capteur de position linéaire (25) comprend un potentiomètre linéaire.
  5. Appareil selon la revendication 3, caractérisé en ce que le capteur de position linéaire (25) comprend un dispositif de code à barres.
  6. Appareil selon la revendication 2, caractérisé en ce que le capteur de position linéaire (25) est adapté pour détecter la distance entre des surfaces supérieure et inférieure du soufflet (6).
  7. Appareil selon la revendication 6, caractérisé en ce que le capteur de position linéaire (25) comprend un capteur à fil d'étirage.
  8. Appareil selon l'une quelconque des revendications 3 à 7, caractérisé en ce que l'élément de guidage (10) est agencé dans le soufflet (6).
  9. Appareil selon l'une quelconque des revendications 3 à 8, caractérisé en ce que l'élément de guidage (10) comprend une tige de guidage (11) pouvant glisser dans le tube de guidage (10).
  10. Appareil selon l'une quelconque des revendications 3 à 8, caractérisé en ce que l'élément de guidage (10) comprend un tube de guidage, dans lequel peut glisser une tige de guidage (11).
  11. Appareil selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément de guidage (10) comprend un double guide télescopique (35).
  12. Appareil selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de soupape de modulation pneumatique est contrôlé par un moyen manuel.
  13. Appareil selon l'une quelconque des revendications 1 à 11, caractérisé en ce que le dispositif de soupape de modulation pneumatique est contrôlé par un moyen de commande logique.
  14. Appareil selon les revendications 12 ou 13, caractérisé en ce que la course du moyen d'actionnement (4) est uniquement limitée par le moyen de commande.
  15. Appareil selon l'une quelconque des revendications précédentes, caractérisé en ce que le moyen capteur de la position (25) est adapté pour détecter l'abaissement complet du moyen d'actionnement (4) et/ou le positionnement de la soupape du récipient (2) dans la position d'obturation.
  16. Appareil selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend en outre un moyen (21) pour entraîner la vibration de la soupape du récipient (2).
  17. Appareil selon l'une quelconque des revendications précédentes, caractérisé en ce que la soupape du récipient (2) comprend une soupape conique, le soufflet (6) étant monté à l'intérieur de la soupape du récipient (2).
  18. Appareil selon l'une quelconque des revendications précédentes, caractérisé en ce que l'appareil est monté au niveau de la sortie d'un récipient de matériau fluide.
  19. Appareil selon l'une quelconque des revendications 1 à 17, caractérisé en ce que l'appareil est monté dans un dispositif de décharge, pour décharger le matériau fluide d'un récipient le contenant, le dispositif de décharge englobant une trajectoire d'écoulement en vue de l'écoulement du matériau à partir du récipient.
  20. Appareil selon les revendications 18 ou 19, caractérisé en ce que la soupape du récipient (2) et/ou la sortie du récipient sont adaptées pour empêcher un endommagement du matériau fluide.
  21. Appareil selon la revendication 20, caractérisé en ce que la soupape du récipient (2) et/ou la sortie comportent des bords arrondis.
  22. Appareil selon les revendications 20 ou 21, caractérisé en ce que la soupape du récipient (2) comprend un joint de bordure souple (2a).
  23. Procédé de décharge d'un matériau fluide à partir d'un récipient le contenant, caractérisé par l'utilisation de l'appareil (23) selon l'une quelconque des revendications précédentes.
  24. Appareil selon l'une quelconque des revendications 1 à 22, caractérisé en ce que l'appareil englobe en outre un moyen pour entraîner la vibration de la soupape (2), pour faciliter l'écoulement du produit, la vibration de la soupape du récipient (2) étant isolée par le soufflet (6).
EP04715945A 2003-02-28 2004-03-01 Appareil de commande de decharge de materiau fluide Expired - Lifetime EP1601590B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB0304692 2003-02-28
GB0304693A GB0304693D0 (en) 2003-02-28 2003-02-28 Apparatus for controlling discharge of flowable material
GB0304692A GB0304692D0 (en) 2003-02-28 2003-02-28 Apparatus for controlling discharge of flowable material
GB0304693 2003-02-28
PCT/GB2004/000819 WO2004076314A1 (fr) 2003-02-28 2004-03-01 Appareil de commande de decharge de materiau fluide

Publications (2)

Publication Number Publication Date
EP1601590A1 EP1601590A1 (fr) 2005-12-07
EP1601590B1 true EP1601590B1 (fr) 2012-04-25

Family

ID=32929395

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04715945A Expired - Lifetime EP1601590B1 (fr) 2003-02-28 2004-03-01 Appareil de commande de decharge de materiau fluide

Country Status (3)

Country Link
EP (1) EP1601590B1 (fr)
AT (1) ATE555041T1 (fr)
WO (1) WO2004076314A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201315944D0 (en) 2013-09-06 2013-10-23 Matcon Ltd Seal system
CN113200249A (zh) * 2021-06-08 2021-08-03 无锡满意包装机械有限公司 一种移动料仓自动下料装置
CN115489892B (zh) * 2022-10-18 2024-05-07 无锡大东机械制造有限公司 一种升降式投料装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2121014A (en) * 1982-04-06 1983-12-14 Bel Tyne Company Limited Discharging apparatus for e.g. a silo
GB2178731B (en) * 1985-08-02 1989-04-19 Material Control Eng Ltd Valve
NO890321D0 (no) * 1989-01-26 1989-01-26 Maritime Gmc A S Justerbar utmatingsventil for containere/lagertanker/siloer for pulverformede materialer.
GB9506872D0 (en) * 1995-04-03 1995-05-24 Material Control Eng Ltd Material handling apparatus
DE59800028D1 (de) * 1998-02-02 1999-10-14 At Anlagetechnik Ag Auslassvorrichtung zum dosierbaren Auslassen von Schüttgut aus einem Aufnahmebereich
GB9818536D0 (en) * 1998-08-25 1998-10-21 Matcon R & D Ltd Material handling apparatus
ATE447112T1 (de) * 2001-06-07 2009-11-15 Gefran Spa Anordnung eines positionssensors in einer kolben- zylinder-einheit

Also Published As

Publication number Publication date
EP1601590A1 (fr) 2005-12-07
ATE555041T1 (de) 2012-05-15
WO2004076314A1 (fr) 2004-09-10

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