EP0997698A1 - Gutabsperrklappe für einen Fülltrichter - Google Patents

Gutabsperrklappe für einen Fülltrichter Download PDF

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Publication number
EP0997698A1
EP0997698A1 EP99119665A EP99119665A EP0997698A1 EP 0997698 A1 EP0997698 A1 EP 0997698A1 EP 99119665 A EP99119665 A EP 99119665A EP 99119665 A EP99119665 A EP 99119665A EP 0997698 A1 EP0997698 A1 EP 0997698A1
Authority
EP
European Patent Office
Prior art keywords
screen
seat
valve
main seat
valve according
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.)
Withdrawn
Application number
EP99119665A
Other languages
English (en)
French (fr)
Inventor
Emile Lonardi
Giovanni Cimenti
Steve Arendt
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
Publication of EP0997698A1 publication Critical patent/EP0997698A1/de
Withdrawn legal-status Critical Current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
    • B65D90/64—Gates or closures having multipart closure members, the parts being brought into closing position one by one according to need
    • 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
    • B65D90/623—Gates or closures having closure members movable out of the plane of the opening having a rotational motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/0033—Charging; Discharging; Manipulation of charge charging of particulate material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/10—Charging directly from hoppers or shoots
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/10—Charging directly from hoppers or shoots
    • F27D2003/105—Charging directly from hoppers or shoots using shutters

Definitions

  • the present invention relates to a material retaining valve for a feed hopper, in particular a feed hopper of a shaft furnace.
  • valve material flow retention and adjustment designed to equip a hopper for the supply of a shaft furnace fitted with a rotary distribution chute variable tilt angle.
  • This valve includes two registers in the form of spherical caps, the relative movement of which allows the section of passage symmetrically around the central axis of flow of the material.
  • the registers are arranged in a sealed chamber, located directly below hopper. At its lower end, this sealed chamber is fitted with a sealing valve, which can be pivoted from a lateral position, in which it is sheltered from the material discharged from the hopper, in a closed position, in which it is transverse to the flow axis of the matter.
  • the sealing valve is applicable by an axial translational movement on a seat.
  • the latter surrounds peripherally the discharge opening of the hopper and is provided with a sealing surface facing downwards, i.e. in the direction of flow of the material.
  • a device as described in the document EP-A-0062770 knows how to give complete satisfaction from the characteristic point of view flow adjustment and gas tightness point of view. Its height of assembly and its high cost price are disadvantages some, when it must for example equip a blast furnace of reduced size.
  • This valve comprises a movable closure member arranged below a fixed seat.
  • a pivoting mechanism allows the organ to pivot shutter between a closed position, in which the shutter member is pressed tightly against the seat, and an open position, in which the shutter member is located outside the flow of material flowing at across the seat.
  • a feed hopper for a blast furnace may contain loads of very different particle sizes, such as by example: coke with a particle size of 50 to 100 mm; ore with a particle size of 2 to 20 mm; pellets with a particle size of the order 25 mm. Since the valve of document US-A-4,514,129 is not designed to act on the flow of material flowing from the hopper through the valve seat, it is necessarily necessary to accept that a hopper containing a load having a finer particle size, empties faster than a hopper containing a filler with a larger particle size. To still guarantee distribution of the material as uniform as possible on the loading surface, we then act on the speed of rotation of the distribution chute of the charge.
  • the object of the present invention is to provide a check valve for material for a hopper, which acts on the rate of discharge of the hopper, without subjecting its shutter member to excessive erosion and without cause asymmetry in the flow of matter.
  • this objective is achieved by a valve according to claim 1.
  • a material check valve conventionally comprises a main seat, which is provided with a passage opening for the discharge of the contents of said hopper, a movable closure member and a drive mechanism.
  • the latter is suitable for driving the shutter member between a closed position, in which it stops the discharge of said hopper through the main seat, and an open position, in which it allows material to flow through the main seat.
  • the valve further comprises a screen reduction of the passage section of the main seat, and a mechanism suitable for driving the screen between a first position, in which it is associated with said head office so as to reduce the section of passage of it, and a second position, in which it fully releases the main seat passage section.
  • the screen In said first position, the screen allows you to throttle the flow of material passing through the opening of passage of the main seat and consequently reduce the discharge speed hopper. It will be appreciated that the obturation member does not intervene in the reduction in discharge rate and can therefore be taken out completely of the material flow, so that it is not exposed to the abrasive effect of the material flowing through the valve. If an acceleration of the discharge of the hopper is required, the screen is simply driven by its drive mechanism outside the material flow.
  • valve according to the present invention is therefore perfectly suited to equip a device feeder with rotary chute.
  • the screen is received on the main seat and defines a secondary seat which receives the obturation member. This execution also makes it possible to ensure that the valve is closed, while now the screen in said first position, in which it is associated said main seat so as to reduce the passage section thereof.
  • the screen comprises an annular frame and a central plate provided with a passage opening of section smaller than that of the head office.
  • This central plate is advantageously a part wear exchangeably mounted in the annular frame.
  • the screen preferably has a surface spherical seal which, in the closed position of the valve, cooperates with a conical sealing surface of the main seat for sealing.
  • the shutter member has a rim which, like the screen, defines a spherical sealing surface which, in the closed position of the valve, cooperates with a conical sealing surface of the secondary seat to sealing.
  • the shutter member preferably comprises a plate provided with a rim supported by the secondary seat on the screen, so that a empty space remains between the screen and the shutter member.
  • This empty space has advantageously a height greater than the diameter of the largest particles of material to be discharged through the valve. This avoids that a particle trapped between the shutter member and the screen cannot prevent the closing the valve.
  • the passage section of the main seat is preferably larger than that of the hopper discharge opening, to ensure that the seat main is not exposed to the abrasive effect of the material flow flowing at across the seat.
  • the screen should then define a smaller passage section than the hopper discharge opening, in order to be able to throttle the flow of matter.
  • the mechanism for driving the shutter member and / or the screen advantageously comprises a pivoting support arm.
  • the latter then has a pivot axis arranged laterally with respect to the seat in a plane substantially perpendicular to the axis of flow of the material.
  • it preferably involves an articulation of the type gimbal in the suspension of these two elements.
  • a more compact construction of the valve is obtained, if provision is made for combined pivot axes for the support arm of the closure member and the display support arm.
  • a coupling device makes it possible to connect mechanically the screen support arm is at the drive motor, so that the screen is integral in movement with the shutter member, either to a body secured to the main seat, so that the screen is blocked on the main seat.
  • a series of mobile screens can be integrated into the valve reduction of the passage section. These screens are similar to the screen described above and have an increasingly small passage section.
  • a drive mechanism also similar to that described above, then allows to train each of these screens between a first position, in which the screen reduces the passage section of the valve for the flow of material flowing out of the hopper, and a second position, in which it does not affect the flow of material flowing from the hopper through the valve.
  • the main seat preferably receives the screen with the most large passage section.
  • Each of the screens in the series defines a seat secondary which receives the screen having the passage section immediately lower.
  • the last screen, having the smallest passage section defines then a secondary seat which receives the shutter member.
  • valve 10 equipping an opening discharge 12 from a feed hopper 14 from a shaft furnace.
  • This valve 10 comprises an annular main seat 16, which is carried in a sealed manner by an annular flange 18 of the hopper 14.
  • the main seat 16 defines a sealing surface 20, which has the shape of a concave conical crown and which is advantageously provided with a seal flexible sealing 22.
  • the passage section of the main seat 16 is larger than the passage section of the discharge opening 12 feed hopper 14. The main seat 16 is therefore located away from the material flow which is established through the discharge opening 12 in position open the valve 10.
  • a shaft oven - flexible seals should be cooled to to increase their lifespan.
  • a flow channel 24 for a coolant is advantageously arranged in an annular body 26 from main office 16.
  • a screen 28 for reducing the section of passage On the main seat 16 is supported a screen 28 for reducing the section of passage.
  • This screen 28 more especially comprises an annular frame 30 and a central plate 32.
  • an opening passage 34 In the latter is formed an opening passage 34, which has a passage section smaller than the opening of discharge 12 from the hopper 14.
  • This passage opening has a circular section, if we want to obtain a material flow of circular section.
  • the plaque central unit 32 is detachably fixed to the annular frame 30, so as to be able to be exchanged, either when it is worn, or when we want to change the screen passage section 28.
  • the annular frame 30 defines a sealing surface 36 having the shape of a convex spherical crown.
  • This convex spherical crown 36 cooperates with the conical crown concave 22 of the main seat 16 to ensure a circular contact line at the level of the seal 22, independently of screen orientation faults 28 by report to main office 16.
  • the annular frame 30 can be provided with a flow channel 38 for a cooling fluid.
  • the annular frame 30 of the screen 28 has a secondary seat 40.
  • the secondary seat 40 defines a sealing surface 42, which it also has the shape of a concave conical crown and is advantageously fitted with a flexible seal 44, cooled by the cooling channel 38 above.
  • a shutter member 46 On the secondary seat 40 is supported a shutter member 46.
  • This the latter comprises a plate 48 provided with a flange 50, so as to have substantially the shape of a deep plate.
  • the flange 50 defines a sealing surface 52 having the shape of a convex spherical crown.
  • This convex spherical crown 52 cooperates with the concave conical crown 42 of the secondary seat 40 to ensure circular contact surface at seal 44, regardless of defects orientation of the shutter member 46 relative to the secondary seat 40.
  • valve In Figure 2 the valve is shown in its closed position, in which the shutter member 46 is received on the secondary seat 40 of screen 28, and screen 28 is received on main seat 16. It will be noted that between the lower surface 56 of the screen 28 and the upper surface 54 of the plate 48 there remains an empty space 58. The height h of this empty space 58 is preferably larger than the diameter of the largest particles of material to be discharged through the valve. This prevents a particle trapped between the organ shutter 46 and the screen 28 cannot damage the valve 10 or prevent its closure.
  • To open the valve 10 simply rotate the member shutter 46 in a lateral position, in which it is located outside of the flow of material flowing through the discharge opening 12 of the hopper 14. In this position, the material contained in the hopper 14 flows at through the passage opening 34 of the screen 28.
  • this passage opening 34 Since the passage section of this passage opening 34 is smaller than the passage section of the discharge opening 12 of the hopper 14, the screen 28 acts as a resistance to the flow and slows down the discharge of the hopper 14. If we want to accelerate the discharge from the hopper 14, it suffices to pivot the screen 28 to a position lateral, in which it is located outside the material flow flowing at through the discharge opening of the feed hopper 14.
  • the shutter member 46 is supported by a support arm 60, which is carried by a first shaft 62.
  • the screen 28 is supported by a forked arm 64, which is carried by a hollow shaft 66, in which is housed one end of the first shaft 62.
  • the two shafts 62 and 66 are supported using two sockets 68, 72 in a sealed carcass 70 surrounding the valve 10. They have an axis rotation joint 74, which is arranged laterally with respect to the seat main 16, in a plane substantially perpendicular to the flow axis of matter.
  • Each of the two shafts 62, 66 has its own drive motor. These are for example two hydraulic cylinders 76, 77, but there could also be rotary motors.
  • a single drive motor 76 ' for the two shafts 62, 66.
  • This motor 76' drives the shaft 62, that is to say rotates the shutter member 46 about the axis 74.
  • the second motor is replaced by a coupling device 78.
  • This device which includes example a coupling cylinder 80, allows to immobilize, in a first coupling position, the hollow shaft 66 relative to the first shaft 62, when the shutter member 46 is received on the secondary seat of the screen 28; and in a second coupling position, the hollow shaft 66 relative to the carcass 70, when the screen 28 is received on the main seat 16. It follows that in said first coupling position, the member can be pivoted shutter 46 together with the screen 28 around the axis 74; and in said second coupling position, screen 28 can be locked on the seat main 16.
  • a cardan type suspension of the shutter member 46 is described in using Figure 2. It includes a clevis joint 88 between the member shutter 46 and the support arm 60.
  • This fork joint 88 makes intervene a special socket 90, in which a clevis pin 92 can not only rotate around its axis, but also be placed obliquely by relative to the axis of the socket 90.
  • the socket 90 comprises for example a bore delimited by a surface having substantially the shape of a crown convex of a torus.
  • Figure 5 we see three end screws stroke 96 on the support arm 60. The function of these screws 96 is to limit the amplitude of the movements of the shutter member 46 made possible by the gimbal type suspension.
  • a suspension of the cardan type of the screen 28 is described using the Figure 1. It includes a suspension with two cylindrical joints 96, 98 of the screen 28 in the forked arm 64 and a cylindrical articulation 100 of the arm forked 64 on the hollow shaft 66.
  • Figures 1 and 5 we see two screws 102 which limit the pivoting of the arm 64 around its articulation 100.
  • two opposite screws 104 cooperate with a tongue 106 of the screen 28 to limit the pivoting of the screen 28 around the cylindrical joints 96 and 98.
  • valve could also be designed as a simple valve material retention without sealing function. If the valve is on the other hand designed to fulfill a dual function of material retention and sealing, the measures described in the document can be applied without problem US-A-4,514,129, which aim to protect the sealing surfaces against the effect abrasive material flowing through the valve.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Sliding Valves (AREA)
EP99119665A 1998-10-30 1999-10-04 Gutabsperrklappe für einen Fülltrichter Withdrawn EP0997698A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU90308 1998-10-30
LU90308A LU90308B1 (fr) 1998-10-30 1998-10-30 Clapet de retenue de mati-re pour une tr-mie d'alimentation

Publications (1)

Publication Number Publication Date
EP0997698A1 true EP0997698A1 (de) 2000-05-03

Family

ID=19731777

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99119665A Withdrawn EP0997698A1 (de) 1998-10-30 1999-10-04 Gutabsperrklappe für einen Fülltrichter

Country Status (4)

Country Link
EP (1) EP0997698A1 (de)
CN (1) CN1253272A (de)
LU (1) LU90308B1 (de)
TW (1) TW402678B (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10327276A1 (de) * 2003-06-17 2005-01-05 Z & J Technologies Gmbh Vorrichtung zum Verschließen oder Öffnen einer Öffnung, insbesondere Bodenöffnung eines Materialbunkers für einen Hochofen
WO2005002970A1 (en) * 2003-07-01 2005-01-13 Azionaria Costruzioni Macchine Automatiche A.C.M.A. S.P.A. Machine for filling containers with powdered or granular bulk material
DE102007026509A1 (de) * 2007-06-08 2008-12-11 Z & J Technologies Gmbh Vorrichtung und Verfahren zum Verschließen oder Öffnen einer Öffnung, insbesondere Bodenöffnung eines Materialbunkers für einen Hochofen und Hochofen mit einer derartigen Vorrichtung
LU508121B1 (en) * 2024-08-28 2026-03-02 Wurth Paul Sa Material gate for an industrial plant
LU508122B1 (en) * 2024-08-28 2026-03-02 Wurth Paul Sa Material gate for an industrial plant

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE725260C (de) * 1939-11-19 1942-09-17 Pohlig Ag J Bunker mit mehreren, in einer Flucht in Abstaenden angeordneten verschliessbaren Auslaeufen und einer darunter ueber einem Foerderband verfahrbaren UEberleitvorrichtung
FR2173241A1 (de) * 1972-02-24 1973-10-05 Thyssen Niederrhein Ag
FR2344767A1 (fr) * 1976-03-16 1977-10-14 Macawber Eng Ltd Vanne de fermeture etanche pour passage de materiaux en vrac
EP0062770A1 (de) * 1981-04-03 1982-10-20 Paul Wurth S.A. Schachtofenbeschickungsvorrichtung
SE451708B (sv) * 1985-09-27 1987-10-26 Per Ingemar Aulin Doseringsspjell
EP0473829A1 (de) * 1990-09-06 1992-03-11 Azuma Tekko Kabushiki Kaisha Staubaustragapparat
DE29807583U1 (de) * 1998-04-20 1998-07-23 Kirchner, Klaus-Dieter, 66557 Illingen Einlauftrichter

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE725260C (de) * 1939-11-19 1942-09-17 Pohlig Ag J Bunker mit mehreren, in einer Flucht in Abstaenden angeordneten verschliessbaren Auslaeufen und einer darunter ueber einem Foerderband verfahrbaren UEberleitvorrichtung
FR2173241A1 (de) * 1972-02-24 1973-10-05 Thyssen Niederrhein Ag
FR2344767A1 (fr) * 1976-03-16 1977-10-14 Macawber Eng Ltd Vanne de fermeture etanche pour passage de materiaux en vrac
EP0062770A1 (de) * 1981-04-03 1982-10-20 Paul Wurth S.A. Schachtofenbeschickungsvorrichtung
US4514129A (en) * 1981-04-03 1985-04-30 Paul Wurth S.A. Furnace charging installation
SE451708B (sv) * 1985-09-27 1987-10-26 Per Ingemar Aulin Doseringsspjell
EP0473829A1 (de) * 1990-09-06 1992-03-11 Azuma Tekko Kabushiki Kaisha Staubaustragapparat
DE29807583U1 (de) * 1998-04-20 1998-07-23 Kirchner, Klaus-Dieter, 66557 Illingen Einlauftrichter

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10327276A1 (de) * 2003-06-17 2005-01-05 Z & J Technologies Gmbh Vorrichtung zum Verschließen oder Öffnen einer Öffnung, insbesondere Bodenöffnung eines Materialbunkers für einen Hochofen
WO2005002970A1 (en) * 2003-07-01 2005-01-13 Azionaria Costruzioni Macchine Automatiche A.C.M.A. S.P.A. Machine for filling containers with powdered or granular bulk material
DE102007026509A1 (de) * 2007-06-08 2008-12-11 Z & J Technologies Gmbh Vorrichtung und Verfahren zum Verschließen oder Öffnen einer Öffnung, insbesondere Bodenöffnung eines Materialbunkers für einen Hochofen und Hochofen mit einer derartigen Vorrichtung
US8071014B2 (en) 2007-06-08 2011-12-06 Z & J Technologies Gmbh Apparatus and method for closing or opening an opening, especially a bottom opening of a material hopper for a blast furnace, and blast furnace having such an apparatus
LU508121B1 (en) * 2024-08-28 2026-03-02 Wurth Paul Sa Material gate for an industrial plant
LU508122B1 (en) * 2024-08-28 2026-03-02 Wurth Paul Sa Material gate for an industrial plant
WO2026046757A1 (en) * 2024-08-28 2026-03-05 Paul Wurth S.A. Material gate for an industrial plant
WO2026046758A1 (en) * 2024-08-28 2026-03-05 Paul Wurth S.A. Material gate for an industrial plant

Also Published As

Publication number Publication date
CN1253272A (zh) 2000-05-17
TW402678B (en) 2000-08-21
LU90308B1 (fr) 2000-07-19

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