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WO1990008724A1 - Vanne de decharge reglable pour conteneurs/reservoirs de stockage/silos de matieres pulverulentes - Google Patents

Vanne de decharge reglable pour conteneurs/reservoirs de stockage/silos de matieres pulverulentes Download PDF

Info

Publication number
WO1990008724A1
WO1990008724A1 PCT/NO1990/000017 NO9000017W WO9008724A1 WO 1990008724 A1 WO1990008724 A1 WO 1990008724A1 NO 9000017 W NO9000017 W NO 9000017W WO 9008724 A1 WO9008724 A1 WO 9008724A1
Authority
WO
WIPO (PCT)
Prior art keywords
discharge valve
plug
actuator head
piston
container
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.)
Ceased
Application number
PCT/NO1990/000017
Other languages
English (en)
Inventor
T. Marthon Michaelsen
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.)
MARITIME GMC AS
Original Assignee
MARITIME GMC AS
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
Application filed by MARITIME GMC AS filed Critical MARITIME GMC AS
Publication of WO1990008724A1 publication Critical patent/WO1990008724A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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

Definitions

  • the present invention relates to an adjustable discharge valve for containers/storage tanks/silos for pulverulent (powdery) materials, particularly chemicals, where the container/storage tank/silo has an outlet in the form of a bottom opening which is so arranged as to be openable/closeable by the aid of a cone shaped closing and sealing plug, such that the pulverulent material, when the closing and sealing plug is open, will run out of the outlet through the annular space formed between the cone shaped closing and sealing plug's outer circumference and the outlet's adjacent inner wall.
  • An outlet valve of this type is known from British patent claim no. 2,187,731 in which the cone shaped closing and sealing plug is arranged as an inflateable bellows with vertical axis. The plug is lifted by the pumping of pressure fluid into the bellows, and bleeding off of the bellows pressure causes lowering of the plug.
  • this known discharge valve there are also effected measures by which to vibrate the closing and sealing plug, so as to facilitate the discharge, particularly in the case of packed mass.
  • the discharge valve disclosed in the British patent aforementioned is based on a pulse system and is therefore unable to ensure continual dosing until reaching dosing quantities of over 2 tonnes an hour.
  • the discharge valve is of no use for dosing where the same valve is charged with the task of varying the dose quantity from 10 kg/hour to 1500 kg/hour.
  • poor feedback is obtained to the PLS [programmable logic system] about the quantity weighed out, as the valve is continually moving from closed to open position.
  • the disclosed discharge valve has a high level of noise since three metallic parts are always impacting on each other.
  • the objective in accordance with the present invention has been to remedy these disadvantages.
  • the discharge valve according to the present invention has a hopper shaped valve casing which, for powder containers, is designed to be fixed to a frame in the discharge station and, for stationary tanks/silos, directly to the tank/silo's outlet.
  • a pressure fluid cylinder with vertical axis, whose (upper) conical piston rod end serves as actuation organ for the said cone shaped closing and sealing plug, is designed complementarily to the plug, so as to be capable of lifting/lowering the closing and sealing plug under controlled, evenly distributed application of power.
  • the pressure cylinder is equipped with a position sensor.
  • the plug's actuator organ is connected to a variable vibrator so that the powder can be set in motion via the plug. This makes it possible through essentially known means to discharge the powder, even when tightly packed.
  • the container/storage tank/silo or installation cradle for the same is equipped with weigh cells and/or a quantity monitor which provides an accurate feedback of the quantity discharged per unit of time to the PLS. Since the vibrator, position sensor, cylinder valves and weigh cells/quantity monitors are interfaced with the PLS, one will at all times have full control of the powder discharge process. This means that if one, via the PLS, selects a discharge quantity per time unit of, for example, 400 kg/hour, the piston in the pressure cylinder will be displaced to a preset level corresponding to that discharge rate.
  • the PLS When, accordingly, sufficient powder quantity has been discharged for the weigh cells/quantity monitor to record the weight loss/quantity, the PLS will "compute” to what extent the discharged quantity is correct relative to the chosen dose. In the event of disparity, the PLS will signal causing the discharge valve to reduce/increase the discharge slot. This implies that the further into the discharge period one progresses, the closer will one be to the chosen dose.
  • the discharge valve as disclosed herein provides a continuously adjustable annular discharge slot, enabling very precise dosing to be achieved.
  • the movements that the valve's moving parts must perform take place under controlled conditions with very little noise. It is possible to dose continually down to very small powder quantities per unit of time.
  • the discharge valve provides precise feedback to the PLS on the position at which it is placed, enabling small adjustments to be easily implemented. It also reacts very precisely to changes in the discharge slot. Discharging is accomplished calmly and controlledly, which enables weight assays to be made without disturbance.
  • FIG. 1-3 are principle sketches showing how the discharge valve of the invention functions with powder containers;
  • Fig. 4 and 5 are corresponding principle sketches showing the discharge valve's installation and function with stationary storage tanks
  • Fig. 6 shows an embodiment for a suitable closing and sealing plug which facilitates the fluidisation of the tank's contents by supplying air;
  • Fig. 7 and 8 show detailed axial section elevations of the discharge valve, respectively in open and closed position.
  • Fig. 1 shows the situation when the dosing station is empty, namely before the powder container is located over the discharge valve; in Fig. 2 the container is positioned above the discharge valve, which is in the closed position; and in Fig. 3 which corresponds to Fig. 2 the valve is shown in open position.
  • the reference figure 1 denotes a container/storage tank/silo for pulverulent material, particularly chemicals.
  • the powder container of Fig. 1-3 has a central bottom outlet 2.
  • the outlet 2 is arranged to be closed and opened by aid of a cone shaped closing and sealing plug 3 which at its largest (lower) circumference is provided with a ring-shaped sealing ring 4, which in the plug's closed position forms a seal against the adjacent inner wall of the cross-over section between container 1 and outlet 2.
  • a ring-shaped sealing ring 4 which in the plug's closed position forms a seal against the adjacent inner wall of the cross-over section between container 1 and outlet 2.
  • an annular slot opens up between the plug and adjacent container inner wall at the cross-over section to outlet 2.
  • This annular slot's area can be varied depending on the plug's 3 elevation, whereby it is possible to change/adjust the discharged powder quantity per unit of time, in other words the dose rate. This represents the prior art.
  • the discharge valve embraces a hopper shaped valve casing 5 which at container 1 is fixed to a cradle in the discharge station, Fig. 1-3, and at stationary storage tanks/silos 1' to the outlet of the tank/silo 2', Fig. 4-6.
  • the valve casing 5 encloses the double-acting pressure fluid cylinder 6 with vertical axis.
  • the pressure cylinder 6 is equipped with an electronic positioning sensor 7.
  • the pressure cylinder's 6 upper piston rod end supports an upwardly pointing conical/wedge-shaped actuator organ or actuator head 8 for the closing and sealing plug 3.
  • the head 8 is shaped complementarity to plug 3 and therefore has approximately the same cone shape.
  • Reference figure 10 denotes a circumscribing seal which according to Fig. 1-3 is intended to seal between the container outlet 2 and valve casing 5, while 11 indicates the vibrators and 12 a shock absorber for the valve casing 5.
  • Reference figure 13 denotes an attachment for the double-acting pressure cylinder 6.
  • Reference figure 14 indicates weigh cells and 15 a PLS (control unit).
  • Fig. 1-3 the PLS is interfaced with the weigh cells 14, vibrators 9,11, and the pressure cylinder's 6 valves and position sensor 7. The same is true of Fig. 4 and 5.
  • the annular discharge slot 16 between plug 3 and container outlet 2 will be adjusted if the discharged powder quantity per time unit does not match the chosen dosing.
  • Fig. 1 the dosing station is empty, meaning that the container 1 is not yet in position above the discharge valve.
  • Seal 4 seals between the plug 3 and container outlet 2, while seal 10 seals against the actuator head 8, thereby preventing undesirable substances from gaining access to the closed system within the valve casing 5.
  • Fig. 2 the powder container 1 is located above the discharge valve. At this location of the container, the container outlet 2 reaches down inside the valve casing at seal 10, where a seal is established between the valve and the container. The PLS 15 is now able to weigh the container with powder.
  • the PLS when selecting the discharge quantity per unit of time will control the discharge valve's actuator head 8 to take up an elevation bearing a relation to the chosen dose quantity, thereby making the annular discharge slot small when a small dose quantity is chosen, and larger when a larger quantity is chosen.
  • the actuator head's 8 vibrator 9 is started up, thereby ensuring a uniform discharge stream.
  • the PLS via the weigh cells 14 will update the discharge rate and, as appropriate, adjust it so as to discharge out the correct quantity of powder by the timeout.
  • the pressure cylinder's 6 piston will quickly lift up and then return. If still no weight change is detected, the vibrators 14 will be started up, causing the entire container 1 to vibrate. If the weight change remains zero, the PLS will signal an empty container.
  • the closing and sealing plug 3 is materialised as a double-wall with circumferential opening (or openings) 16 for the supply of air from the valve casing 5, by which means to fluidize the contents of the storage tank.
  • Fig. 7 and 8 the double-acting pressure fluid cylinder 6 is fastened in the valve casing 5 by means of three brackets 17.
  • the actuator head 8 When the discharge valve is activated for discharging of powder via the PLS 15 and solenoid valves (not shown) which are connected to the pressure cylinder's 6 hoses 18, the actuator head 8 is lifted until it reaches the elevation corresponding to the selected discharge rate.
  • the actuator head 8 is installed on a fixing plate 19 at the upper end of the piston rod 6' and is vibrationally insulated from the piston rod 6' by means of a shock absorber 20.
  • the actuator head 8, its air vibrator, for example in the shape of a ball vibrator 9, its shock absorber 20 and the piston rod 6' are isolated from the surroundings by means of a dust bellows 21.
  • the pneumatic ball vibrator 9 is so arranged that it is activated when the actuator head 8 lifts, allowing vibrations to propagate into the container contents. This vibrator 9 is controlled suitably by a servo valve (not shown) whereby variation of the vibration frequency can be achieved.
  • Reference figure 22 denotes an upper fastening plate for the pressure cylinder 6 and 23 a lower fastening plate for the same.
  • Reference 24 denotes a ventilation pipe for the dust bellows 21, where 25 indicates the hoses of the vibrator 9, while 26 indicates the electronic signal for the position sensor 7 which is provided for the pressure cylinder 6.
  • Reference 27 denotes an elastomeric shock-absorbant substance fastened to the actuator head 8.
  • the PLS 15 is interfaced with the weigh cells 14, so that container 1 with its contents and discharge valve is weighed, allowing the dose quantity to be calculated from the "weight loss".
  • the PLS will signal that the full air quantity shall be applied to the vibrator 9. If still no weight change is detected, the air vibrator 11 fastened to the cradle of the outlet valve will activate, causing the entire container to vibrate.
  • vibration characteristics can be matched to the properties of the powder to be discharged.
  • the discharge valve ensures precision feedback to the PLS 15 on the elevation that the actuator head/closing plug has attained.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)

Abstract

L'invention concerne une vanne de décharge automatique à réglage progressif, conçue pour être utilisée conjointement avec des conteneurs/réservoirs de stockage/silos de matières pulvérulentes, notamment des produits chimiques. Le conteneur/réservoir de stockage/silo (1) comporte une sortie inférieure centrale (2) agencée pour se fermer/s'ouvrir à l'aide d'un bouchon (3, 4) pointu de fermeture et d'étanchéité en forme de coin, de sorte que lorsque le bouchon (3, 4) est levé, la matière pulvérulente puisse s'écouler par la sortie (2), dans la fente annulaire (28) formée entre le bord circonférentiel extérieur du bouchon (3, 4) et la paroi intérieure adjacente du conteneur/réservoir de stockage/silo (1) au niveau de la sortie (2). On peut faire varier/régler la quantité de poudre déchargée par unité de temps, en changeant l'élévation dudit bouchon (3, 4). Ladite vanne de décharge comprend un ensemble (6, 6') à piston/cylindre vertical actionné par du fluide sous pression, à double action, lequel, en position de marche, est coaxial avec ledit bouchon (3, 4) de fermeture et d'étanchéité en forme de coin, et dont l'extrémité supérieure soit porte une tête actuatrice (8) commandant ledit bouchon (3, 4) entre les positions fermée et ouverte au maximum, soit est reliée audit bouchon (3, 4) dans le même dessein. Ledit ensemble (6, 6') à piston/cylindre comporte un capteur de piston électronique (7), lequel, avec les deux tuyaux (18) dudit ensemble (6, 6') à piston/cylindre, a comme interface un PLS [Système Logique Programmable].
PCT/NO1990/000017 1989-01-26 1990-01-26 Vanne de decharge reglable pour conteneurs/reservoirs de stockage/silos de matieres pulverulentes Ceased WO1990008724A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO890321 1989-01-26
NO890321A NO890321D0 (no) 1989-01-26 1989-01-26 Justerbar utmatingsventil for containere/lagertanker/siloer for pulverformede materialer.

Publications (1)

Publication Number Publication Date
WO1990008724A1 true WO1990008724A1 (fr) 1990-08-09

Family

ID=19891662

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO1990/000017 Ceased WO1990008724A1 (fr) 1989-01-26 1990-01-26 Vanne de decharge reglable pour conteneurs/reservoirs de stockage/silos de matieres pulverulentes

Country Status (3)

Country Link
AU (1) AU5025290A (fr)
NO (1) NO890321D0 (fr)
WO (1) WO1990008724A1 (fr)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996031422A1 (fr) * 1995-04-03 1996-10-10 Matcon Limited Appareil de manipulation de materiau
EP0745543A1 (fr) * 1995-06-02 1996-12-04 Matcon (R & D) Limited Appareil de manutention de matériaux
US5582332A (en) * 1994-05-06 1996-12-10 Umformtechnik Hausach Gmbh Device for emptying bulk material containers
GB2301583A (en) * 1995-06-02 1996-12-11 Matcon Material handling apparatus
EP0915032A1 (fr) * 1998-02-02 1999-05-12 AT Anlagetechnik AG Dispositif de déchargement pour une décharge dosée de produits pulvérulents hors d'une enceinte
WO2000006469A1 (fr) * 1998-07-28 2000-02-10 Matcon (R & D) Limited Appareil de manutention de matiere en vrac
WO2002036459A1 (fr) * 2000-10-30 2002-05-10 Matcon (R & D) Limited Appareil de manutention de materiaux
EP1243535A1 (fr) * 2001-03-22 2002-09-25 AT Anlagetechnik AG Dispositif de déchargement
EP1279623A1 (fr) * 2001-07-25 2003-01-29 Ivan Semenenko Fermeture de remplissage pour conteneur
DE10236520A1 (de) * 2002-08-09 2004-02-19 At Anlagetechnik Ag Dichtungssystem
WO2004076314A1 (fr) * 2003-02-28 2004-09-10 Matcon (R & D) Limited Appareil de commande de decharge de materiau fluide
GB2433494A (en) * 2005-12-23 2007-06-27 Ivan Semenenko Ltd Material handling apparatus
EP1970679A2 (fr) 2007-03-14 2008-09-17 Ucon AG Containersysteme Kg Station de vidage pour conteneur de produits en vrac dotée d'un conteneur de produits en vrac correspondant et procédé de vidage contrôlé de conteneurs de produits en vrac
CN104401539A (zh) * 2014-11-25 2015-03-11 江苏仅一包装技术有限公司 一种包装下料阀装置
EP2939953A1 (fr) * 2014-05-02 2015-11-04 Visval AG Fermeture pour un récipient pour matières en vrac et dispositif d'amarrage pour une telle fermeture
DE102016101508B3 (de) * 2016-01-28 2017-05-04 Leibniz-Institut für Agrartechnik und Bioökonomie e. V. (ATB) Austragvorrichtung für Schüttgut
WO2023152466A1 (fr) * 2022-02-10 2023-08-17 Matcon Ltd Station de décharge pour système de manipulation de matériau

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2569085A (en) * 1944-08-17 1951-09-25 Wood David Howard Hopper, with valve closure having vibrator therein, for sand and other divided material
GB1195850A (en) * 1967-08-02 1970-06-24 Inst Lacke Und Faerben Hopper Discharge Device
DE2145015A1 (de) * 1971-09-09 1973-03-15 Miag Muehlenbau & Ind Gmbh Vorrichtung zum einstellbaren oeffnen eines absperrers
US3971493A (en) * 1974-08-26 1976-07-27 David Michael Williams Combination transportable container and dispensing receiver
GB2121014A (en) * 1982-04-06 1983-12-14 Bel Tyne Company Limited Discharging apparatus for e.g. a silo
US4470524A (en) * 1980-10-09 1984-09-11 Ivan Semenenko Apparatus for controlling discharge from a silo
GB2178731A (en) * 1985-08-02 1987-02-18 Material Control Eng Ltd Valve for container outlet
US4691843A (en) * 1980-07-24 1987-09-08 Solitec Limited Material discharge apparatus
DE3718428C1 (en) * 1987-06-02 1988-12-15 Brabender Technologie Kg Transport container for bulk material, having an emptying funnel and a conical or plate-shaped shut-off element

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2569085A (en) * 1944-08-17 1951-09-25 Wood David Howard Hopper, with valve closure having vibrator therein, for sand and other divided material
GB1195850A (en) * 1967-08-02 1970-06-24 Inst Lacke Und Faerben Hopper Discharge Device
DE2145015A1 (de) * 1971-09-09 1973-03-15 Miag Muehlenbau & Ind Gmbh Vorrichtung zum einstellbaren oeffnen eines absperrers
US3971493A (en) * 1974-08-26 1976-07-27 David Michael Williams Combination transportable container and dispensing receiver
US4691843A (en) * 1980-07-24 1987-09-08 Solitec Limited Material discharge apparatus
US4470524A (en) * 1980-10-09 1984-09-11 Ivan Semenenko Apparatus for controlling discharge from a silo
GB2121014A (en) * 1982-04-06 1983-12-14 Bel Tyne Company Limited Discharging apparatus for e.g. a silo
GB2178731A (en) * 1985-08-02 1987-02-18 Material Control Eng Ltd Valve for container outlet
DE3718428C1 (en) * 1987-06-02 1988-12-15 Brabender Technologie Kg Transport container for bulk material, having an emptying funnel and a conical or plate-shaped shut-off element

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5582332A (en) * 1994-05-06 1996-12-10 Umformtechnik Hausach Gmbh Device for emptying bulk material containers
WO1996031422A1 (fr) * 1995-04-03 1996-10-10 Matcon Limited Appareil de manipulation de materiau
EP0745543A1 (fr) * 1995-06-02 1996-12-04 Matcon (R & D) Limited Appareil de manutention de matériaux
FR2734798A1 (fr) * 1995-06-02 1996-12-06 Matcon R & D Ltd Appareil permettant le passage de matieres fluides, et recipient comportant ce dispositif
GB2301583A (en) * 1995-06-02 1996-12-11 Matcon Material handling apparatus
GB2301583B (en) * 1995-06-02 1999-08-25 Matcon Material handling apparatus
AU722798B2 (en) * 1995-06-02 2000-08-10 Matcon (R & D) Limited Material handling apparatus
EP0915032A1 (fr) * 1998-02-02 1999-05-12 AT Anlagetechnik AG Dispositif de déchargement pour une décharge dosée de produits pulvérulents hors d'une enceinte
US6123233A (en) * 1998-02-02 2000-09-26 At Anlagetechnik Ag Discharge arrangement for discharging bulk material from a receptacle
WO2000006469A1 (fr) * 1998-07-28 2000-02-10 Matcon (R & D) Limited Appareil de manutention de matiere en vrac
AU751075B2 (en) * 1998-07-28 2002-08-08 Matcon (R & D) Limited Bulk material handling apparatus
WO2002036459A1 (fr) * 2000-10-30 2002-05-10 Matcon (R & D) Limited Appareil de manutention de materiaux
EP1243535A1 (fr) * 2001-03-22 2002-09-25 AT Anlagetechnik AG Dispositif de déchargement
US6672342B2 (en) 2001-03-22 2004-01-06 At Anlagetechnik Ag Apparatus for controlling the discharge of flowable material
AU2002300231B2 (en) * 2001-07-25 2007-08-02 Isl (R & D) Ltd A through-fill closure for a receptacle
EP1279623A1 (fr) * 2001-07-25 2003-01-29 Ivan Semenenko Fermeture de remplissage pour conteneur
US6827242B2 (en) 2001-07-25 2004-12-07 Ivan Semenenko Through-fill closure for a receptacle
DE10236520A1 (de) * 2002-08-09 2004-02-19 At Anlagetechnik Ag Dichtungssystem
WO2004076314A1 (fr) * 2003-02-28 2004-09-10 Matcon (R & D) Limited Appareil de commande de decharge de materiau fluide
GB2433494A (en) * 2005-12-23 2007-06-27 Ivan Semenenko Ltd Material handling apparatus
EP1970679A2 (fr) 2007-03-14 2008-09-17 Ucon AG Containersysteme Kg Station de vidage pour conteneur de produits en vrac dotée d'un conteneur de produits en vrac correspondant et procédé de vidage contrôlé de conteneurs de produits en vrac
EP1970679A3 (fr) * 2007-03-14 2011-06-08 Ucon AG Containersysteme Kg Station de vidage pour conteneur de produits en vrac dotée d'un conteneur de produits en vrac correspondant et procédé de vidage contrôlé de conteneurs de produits en vrac
EP2939953A1 (fr) * 2014-05-02 2015-11-04 Visval AG Fermeture pour un récipient pour matières en vrac et dispositif d'amarrage pour une telle fermeture
CN106715291A (zh) * 2014-05-02 2017-05-24 维斯瓦尔股份公司 封闭组件、用于封闭封闭件的方法、散状物料容器、对接装置和用于封闭对接装置的方法
CN104401539A (zh) * 2014-11-25 2015-03-11 江苏仅一包装技术有限公司 一种包装下料阀装置
DE102016101508B3 (de) * 2016-01-28 2017-05-04 Leibniz-Institut für Agrartechnik und Bioökonomie e. V. (ATB) Austragvorrichtung für Schüttgut
WO2023152466A1 (fr) * 2022-02-10 2023-08-17 Matcon Ltd Station de décharge pour système de manipulation de matériau

Also Published As

Publication number Publication date
NO890321D0 (no) 1989-01-26
AU5025290A (en) 1990-08-24

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