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EP0252342B1 - Dispositif de fermeture d'une ouverture centrale supérieure d'une enceinte et application à une trémie de stockage d'une installation de chargement d'un four à cuve - Google Patents

Dispositif de fermeture d'une ouverture centrale supérieure d'une enceinte et application à une trémie de stockage d'une installation de chargement d'un four à cuve Download PDF

Info

Publication number
EP0252342B1
EP0252342B1 EP87108667A EP87108667A EP0252342B1 EP 0252342 B1 EP0252342 B1 EP 0252342B1 EP 87108667 A EP87108667 A EP 87108667A EP 87108667 A EP87108667 A EP 87108667A EP 0252342 B1 EP0252342 B1 EP 0252342B1
Authority
EP
European Patent Office
Prior art keywords
valve
axis
vessel
airlock
opening
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
EP87108667A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0252342A1 (fr
Inventor
Pierre Mailliet
Germain Schilz
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.)
Paul Wurth SA
Original Assignee
Paul Wurth SA
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 Paul Wurth SA filed Critical Paul Wurth SA
Priority to AT87108667T priority Critical patent/ATE58176T1/de
Publication of EP0252342A1 publication Critical patent/EP0252342A1/fr
Application granted granted Critical
Publication of EP0252342B1 publication Critical patent/EP0252342B1/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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/18—Bell-and-hopper arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories or equipment specially adapted for furnaces of these types
    • F27B1/20—Arrangements of devices for charging

Definitions

  • the present invention relates to a device for closing an upper central opening of an enclosure comprising a sealing valve in the form of a spherical cap carried by one of the ends of a control arm inside the enclosure and cooperating with a seat around said opening, a mechanism for actuating the valve, this mechanism comprising a rotary hollow support housed around its axis of rotation in a sealed bearing of the wall of the enclosure, and connected to the other end of the control arm by means of a device allowing axial movement of the valve relative to its seat.
  • the invention also relates, by way of application, to a storage hopper of a loading installation of a shaft furnace provided with such a closing device.
  • the lower valve evolves in a valve cage, outside the enclosure, while the upper valve is always inside the enclosure.
  • the upper valve therefore entails the disadvantage of reducing the capacity of the enclosure, because when it is open, it is turned around an axis perpendicular to the axis of the hopper to occupy a substantially vertical position.
  • the filling of the hopper must therefore be interrupted before the cone for discharging the loading material touches the valve in its open position, i.e. the capacity of the hopper is reduced by a certain volume which can be qualified as lost, which means that a larger hopper must be provided to introduce, at each cycle, a determined quantity of material into the oven.
  • the object of the present invention is to provide an improved closing device which allows a significant reduction in the space lost in the upper part of the enclosure by the opening of the valve.
  • this object is achieved, by a closing device of the kind described in the preamble, which is characterized in that the support of the mechanism for actuating the valve is mounted so that its axis of rotation forms an acute angle with the vertical axis of the enclosure opening.
  • FIG. 1 schematically shows a known loading installation of the kind described in the aforementioned patent EP0062770.
  • This figure shows the upper part of a tank oven 20 in which a chute 22 is suspended to ensure the distribution of the loading material poured into the oven.
  • This chute 22 is actuated by an appropriate mechanism housed, in the embodiment shown, in a chamber defined around a central channel 26 ensuring the guidance of the material to be placed in the chute 22.
  • a storage enclosure 28 designed in the form of an airlock and provided for this purpose with a lower sealing valve 36 and an upper sealing valve 44, is mounted above the oven. 20. Between the airlock 28 and the oven is a valve cage 30 containing, in addition to the lower sealing valve 36, a metering member 34 intended to regulate the flow of the loading material through a flow pipe. 38 forming the bottom of the airlock 28.
  • the airlock 28 is subject to permanent or periodic weighing to determine its content. This is the reason why the valve cage includes a peripheral compensator 32 to separate the airlock 28 from the oven 20.
  • the actual weighing is carried out by means of several, preferably 3 load cells 40, on which the airlock, the load cells rests. being, in turn, carried by fixed uprights 42 forming part of the frame or superstructure of the oven.
  • a waiting hopper 46 which is filled while the airlock 28 is emptied.
  • a check valve 48 provided at the bottom of a flow pipe 52 of this hopper allows blir the communication between this hopper 46 and the airlock 28, when the sealing valve 44 is open.
  • the section of the passage between the waiting hopper 46 and the airlock 28 is preferably as large as possible and the size of the valve 44 in particular must be designed as a function of the size of this section.
  • the upper sealing valve 44 is in the form of a spherical cap and cooperates, with a view to establishing the sealing of the airlock 28 with an annular seat 54 turned towards the inside of the airlock 28.
  • FIG. 2 shows the details d 'An embodiment of a mechanism for actuating the valve 44 corresponding to that of Figure 14 of the aforementioned European patent EP0062770.
  • This mechanism essentially comprises a rotary hollow support 60 housed around its axis of rotation X in a sealed bearing 62 of the wall 58 of the enclosure 28.
  • This support 60 is extended towards the inside of the enclosure 28 by a yoke 64 comprising, at its end, a pivot 66 forming a support and pivot axis to a bent arm 68, one of the ends of which carries the valve 44 and the opposite end of which is articulated on a rod 70 undergoing an axial longitudinal movement in the support 60 under the action of a motor 72, for example an electric, hydraulic or pneumatic motor.
  • the support 60 comprises an arm 74 directly connected to a hydraulic cylinder or an endless screw, not shown, to pivot the support 60 around the axis X.
  • the total opening of the valve 44 consists first of all in disengaging it from its seat 54 by actuating the motor 72 which moves the rod 70 to the right in FIG. 2. This movement allows the valve to pivot, under the influence of the engine and its weight, around the pivot 66 in an anti-clockwise direction.
  • the release of the valve 44 from the opening, i.e. the opening of the passage in the enclosure 28 consists in turning the assembly formed by the valve 44, the bent arm 68 and the support 60 around the axis X by acting on the arm 74 by the jack not shown, to place the valve 44 in a garage or opening position illustrated diagrammatically in FIG. 3 which shows a view turned through 90 ° with respect to that of FIG. 2.
  • Closing the valve 44 comprises the same operations in reverse, c . the rotation of the support 60 around the axis X followed by a translation, towards the left in FIG. 2 of the rod 70 by the motor 72 to apply the valve 44 against its seat 54.
  • the maximum filling level of the airlock 28 is represented by the line in broken lines 76 representing the discharge cone. This means that the space between the level 76 and the upper wall 58 of the airlock 28 is lost for the capacity of the latter.
  • This lost space is a function of the diameter of the opening and of the valve 44.
  • the valve 44 when the valve 44 opens, it evolves in a circle whose radius corresponds to the distance between the point of intersection of the X axis of rotation of the valve with the vertical axis O of the airlock 28 and the level of the opening.
  • the radius of the circle described by the valve also increases as shown in FIGS. 4,5 and 5a.
  • the present invention provides another arrangement of the support 60 of the valve 44, which allows a less deep penetration of the valve 44 in the airlock 28 when it is opened.
  • an arrangement of the support 60 according to the invention illustrated by FIG. 6 allows, for the same section of the opening of the airlock 28 a better filling thereof or, for the same filling of the airlock 28 an increase in the section of its opening.
  • FIGS. 5a and 7a are vertical sections each time containing the displacement curve of the center of the valve 44, i.e. according to the sectional planes aa in FIGS. 5a and 7a
  • the valve in the open position, occupies in FIG. 5 an almost vertical and deeper position, while in the embodiment of FIG. 7 it is less inclined and therefore more raised. Since in the embodiment of Figure 7 the valve penetrates less deeply into the airlock 28 during opening, the maximum loading level may be higher. This difference is clearly visible in Figure 8 on which the loading level maximum for the embodiment of Figure 4 is represented by 76 and that of the embodiment of Figure 6 by 76 '.
  • FIG. 9 shows an advantageous embodiment applying the principles of the present invention and in which the same reference numbers have been used as in the preceding figures to designate two corresponding elements.
  • the axis of rotation X of the valve 44 is strongly inclined relative to the horizontal, i.e. that the angle a 'is appreciably greater than the angle a in FIG. 6.
  • This sharp inclination further descends the point of intersection between the axis X and the axis O, which greatly increases the radius of the sphere of displacement of the valve 44.
  • the airlock 78 of the embodiment of FIG. 9 has the general shape of a pear, the widest section of which is at the level of the path printed on the valve. 44 by its inclined support 60.
  • valve 44 occupies a position even less inclined than that of FIG. 7, which further raises its lower edge and allows a filling which is even better than that of the embodiment of FIG. 6.
  • the end of the loading phase of the airlock 78 is schematically illustrated in Figures 10, 11 and 11a which correspond respectively to the views shown in Figures 6, 7 and 7a.
  • the check valve 80 which regulates the flow of the loading material of the hopper 46 in the airlock 78 is designed in the form of a bell and is movable in the vertical direction, in a manner known per se by means not shown.
  • the bell 80 is lowered into the position shown in broken lines.
  • the bell 80 is gradually raised to move the fall path of the loading material away from the axis O and thus direct it towards the peripheral region of the airlock 78.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Lift Valve (AREA)
  • Blast Furnaces (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Automatic Analysis And Handling Materials Therefor (AREA)
  • Basic Packing Technique (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
EP87108667A 1986-06-30 1987-06-16 Dispositif de fermeture d'une ouverture centrale supérieure d'une enceinte et application à une trémie de stockage d'une installation de chargement d'un four à cuve Expired - Lifetime EP0252342B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87108667T ATE58176T1 (de) 1986-06-30 1987-06-16 Vorrichtung zum schliessen einer zentralen oberen oeffnung eines behaelters und anwendung auf einen moellerbunker bei einer vorrichtung zum beschicken eines schachtofens.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU86495 1986-06-30
LU86495A LU86495A1 (fr) 1986-06-30 1986-06-30 Dispositif de fermeture d'une ouverture centrale superieure d'une enceinte et application a une tremie de stockage d'une installation de chargement d'un four a cuve

Publications (2)

Publication Number Publication Date
EP0252342A1 EP0252342A1 (fr) 1988-01-13
EP0252342B1 true EP0252342B1 (fr) 1990-11-07

Family

ID=19730728

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87108667A Expired - Lifetime EP0252342B1 (fr) 1986-06-30 1987-06-16 Dispositif de fermeture d'une ouverture centrale supérieure d'une enceinte et application à une trémie de stockage d'une installation de chargement d'un four à cuve

Country Status (16)

Country Link
US (1) US4755095A (uk)
EP (1) EP0252342B1 (uk)
JP (1) JP2627271B2 (uk)
KR (1) KR960000755B1 (uk)
CN (1) CN1009735B (uk)
AT (1) ATE58176T1 (uk)
AU (1) AU598821B2 (uk)
BR (1) BR8703253A (uk)
CA (1) CA1291642C (uk)
CS (1) CS273642B2 (uk)
DE (1) DE3766021D1 (uk)
IN (1) IN170826B (uk)
LU (1) LU86495A1 (uk)
SU (1) SU1581229A3 (uk)
UA (1) UA6017A1 (uk)
ZA (1) ZA874159B (uk)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4979244A (en) * 1988-05-23 1990-12-25 Dirk Bastenhof Wave valve
LU87379A1 (fr) * 1988-11-09 1990-06-12 Wurth Paul Sa Installation de chargement d'un four a cuve
LU87420A1 (fr) * 1988-12-30 1990-07-10 Wurth Paul Sa Dispositif pour reduire les sollicitations sur un clapet d'etancheite
LU87938A1 (fr) * 1991-05-15 1992-12-15 Wurth Paul Sa Installation de chargement d'un four a cuve
US6595733B1 (en) * 1995-11-21 2003-07-22 Wayne A. Willert Fastener having torque reducing thread
US6164329A (en) * 1999-02-10 2000-12-26 Scientific Monitoring Inc. Generally T-shaped valve and valve assembly
GB2405632B (en) * 2003-09-03 2006-02-22 Ivan Semenenko Improvements in or relating to closure assemblies for stores of flowable material
LU91511B1 (en) * 2009-01-14 2010-07-15 Wurth Paul Sa Lower sealing valve unit for a blast furnace top charging system
LU91583B1 (en) 2009-07-03 2011-01-04 Wurth Paul Sa Sealing valve arrangement for a shaft furnace charging installation
LU91822B1 (fr) * 2011-06-08 2012-12-10 Wurth Paul Sa Ensemble à trappe et clapet pour une installation de chargement d'un four à cuve
CN105173464A (zh) * 2015-07-16 2015-12-23 王成东 提取罐自动投料口内开盖装置
LU92837B1 (en) 2015-09-25 2017-04-03 Wurth Paul Sa Sealing valve arrangement for a shaft furnace charging installation
LU93298B1 (en) * 2016-11-10 2018-06-13 Wurth Paul Sa Sealing Valve Arrangement For A Shaft Furnace Charging Installation

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2088977A (en) * 1932-07-25 1937-08-03 Scholler Heinrich Apparatus for removing residues
US2771266A (en) * 1951-07-12 1956-11-20 Svenska Flaektfabriken Ab Pivoted gate valve
US2999666A (en) * 1960-02-23 1961-09-12 Broby Armaturfabrik Ab Valves
FR1334739A (fr) * 1962-09-27 1963-08-09 Koppers Gmbh Heinrich Dispositif d'insertion d'éléments thermo-électriques dans des chambres de réaction mises sous pression
AT312644B (de) * 1970-03-05 1974-01-10 Demag Ag Begichtungsvorrichtung für Schachtöfen, insbesondere für im Hochdruckverfahren betreibbare Hochöfen
GB1420225A (en) * 1972-01-15 1976-01-07 Zimmermann & Jansen Gmbh Shut off valve
LU64909A1 (uk) * 1972-03-06 1972-07-06
US3788621A (en) * 1972-07-10 1974-01-29 Demag Ag Charging head for a metallurgical furnace
FR2232597A1 (en) * 1973-06-07 1975-01-03 G Sojuzny Equipment for uniform charging of blast furnaces - hopper with rotary funnel and four bunkers located over furnace bell
JPS591998Y2 (ja) * 1980-06-14 1984-01-19 大阪機器製造株式会社 無摺動式粉粒体用切出弁
LU83279A1 (fr) * 1981-04-03 1983-03-24 Wurth Paul Sa Installation de chargement d'un four a cuve

Also Published As

Publication number Publication date
AU7458187A (en) 1988-01-07
KR960000755B1 (ko) 1996-01-12
DE3766021D1 (de) 1990-12-13
SU1581229A3 (ru) 1990-07-23
CA1291642C (en) 1991-11-05
JP2627271B2 (ja) 1997-07-02
CS273642B2 (en) 1991-03-12
CN1009735B (zh) 1990-09-26
UA6017A1 (uk) 1994-12-29
CN87104498A (zh) 1988-02-17
ATE58176T1 (de) 1990-11-15
AU598821B2 (en) 1990-07-05
ZA874159B (en) 1988-03-30
CS464487A2 (en) 1990-08-14
BR8703253A (pt) 1988-03-15
JPS6312497A (ja) 1988-01-19
LU86495A1 (fr) 1988-01-20
EP0252342A1 (fr) 1988-01-13
US4755095A (en) 1988-07-05
KR880000316A (ko) 1988-03-24
IN170826B (uk) 1992-05-23

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