EP0742840B1 - Dispositif de repartition de matieres en vrac - Google Patents

Dispositif de repartition de matieres en vrac Download PDF

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Publication number
EP0742840B1
EP0742840B1 EP95905127A EP95905127A EP0742840B1 EP 0742840 B1 EP0742840 B1 EP 0742840B1 EP 95905127 A EP95905127 A EP 95905127A EP 95905127 A EP95905127 A EP 95905127A EP 0742840 B1 EP0742840 B1 EP 0742840B1
Authority
EP
European Patent Office
Prior art keywords
chute
rotor
pivoting
ring
axis
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
EP95905127A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0742840A1 (fr
Inventor
Pierre Mailliet
Emile Lonardi
Gilbert Bernard
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 EP0742840A1 publication Critical patent/EP0742840A1/fr
Application granted granted Critical
Publication of EP0742840B1 publication Critical patent/EP0742840B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/18—Bell-and-hopper arrangements
    • C21B7/20—Bell-and-hopper arrangements with appliances for distributing the burden

Definitions

  • Such devices for distributing bulk materials are, for example, used in devices for loading ovens with vats, in particular blast furnaces.
  • the chute then distributes the loading material on a loading surface inside the shaft furnace.
  • the first rotor essentially imposes a rotation on the chute around a vertical axis.
  • the second rotor interacts with the chute so as to determine its angle of inclination relative to the vertical.
  • the second rotor is connected to the chute by a pivoting mechanism transforming a variation of the angular offset between the two rotors into a variation of the angle of inclination of the chute in its vertical pivot plane.
  • Document US-A-4,368,813 proposes a device of the type described in the preamble in which the rotor also comprises a toothed ring coaxial with the vertical axis of rotation of the chute.
  • This toothed ring cooperates with an input pinion with a vertical axis of a connecting rod-crank mechanism supported by the first rotor.
  • the rod of this mechanism is contained in the pivot plane of the chute and is articulated with its free end on the rear surface of the chute.
  • Document US-A-4,941,792 proposes two versions of a device of the type described in the preamble.
  • a pivoting lever supported by the first rotor is used so as to be able to pivot in the pivoting plane of the chute.
  • This pivoting lever is connected via a rod with ball joints to the second rotor.
  • the chute comprises two lateral suspension pins which are each provided with a crank.
  • a forked rod (a stirrup) connects the pivot rod to the two cranks of the chute.
  • the second rotor supports a toothed annular segment which cooperates with a toothed sector secured to a journal for lateral suspension of the chute.
  • Document US-A-5,022,806 proposes a device of the type described in the preamble, in which the chute comprises a lateral arm which slides by means of a shoe articulated on this arm in a guide groove.
  • This guide groove is defined by a curved element supported by the second rotor.
  • the center of curvature of the curved element defining the guide groove is located at the point of intersection of the pivot axis and the axis of rotation of the chute.
  • the object of the present invention is to improve in a device of the type described in the preamble the transmission of forces between the second rotor and the chute.
  • the pivoting ring generates, during a relative rotation in the plane of rotation defined by said guide means of the second rotor, a pivoting of the chute around the horizontal pivot axis of the latter.
  • the guide means force the pivoting ring, which is provided with a suspension of the Cardan type, to evolve strictly in a plane of inclined rotation defined in a reference attached to the second rotor.
  • These guide means thus impose on the axis of suspension of the pivoting ring, a variable inclination between - ⁇ and + ⁇ in a frame attached to the first rotor; which produces a variation in the angle of inclination of the chute in its pivoting plane.
  • the proposed device produces in the pivot plane of the chute a pivoting of the chute with an angular amplitude 2 ⁇ to return to its initial position.
  • the chute produces a moment around its pivot axis. This moment, which will be called the pivoting moment "of the chute, is proportional to the weight of the chute and to the horizontal distance which separates its center of gravity from the vertical plane containing its pivot axis. This distance is of course a function of the chute inclination angle in its pivot plane.
  • the guide means of the second rotor define in said inclined plane of rotation at least three points of contact with the pivoting ring. These are the reactions at these points of contact which oppose said moment of pivoting of the chute.
  • the pivoting ring constitutes a simple, but clever element for optimally taking up around the chute the reactions of said guide means and thus opposing a moment of reaction to said pivoting moment of the chute.
  • the number of contact points between the pivoting ring and the chute can be greater than three.
  • these contact points can also be contact surfaces.
  • the distribution of these contact points around the chute can be arbitrary, as long as the kinematic constraint in relation to said inclined plane of rotation is satisfied. There are therefore many possibilities for optimizing said contact points, in particular as a function of the contact pressures which must be transmitted.
  • the pivoting ring defines an ideal interface between the chute on one side and the second rotor on the other side, to resume with the second rotor said pivoting moment of the chute.
  • the pivoting ring involves, in the device according to the invention, a particularly important lever arm in the recovery of said pivoting moment of the chute. This naturally has a favorable influence on the importance of the forces to be transmitted in the device.
  • said guide means may for example comprise isolated supports circumferentially spaced around the second rotor. The latter then cooperate with a bearing surface of the pivoting ring to define said inclined plane of rotation in a frame attached to the second rotor.
  • isolated supports include, for example, roller or skid supports.
  • Said guide means may however also include bearing surfaces which cooperate with insulated bearings (for example rollers or pads) or with corresponding bearing surfaces of the pivoting ring.
  • said means for guiding the second rotor and the contact points associated therewith with the pivoting ring are preferably designed so as to transmit forces perpendicular to said plane of rotation inclined in two opposite directions. This is for example the case if two bearing surfaces are arranged so as to define a guide groove for elements in relative rotation in this groove.
  • said guide means comprise a large diameter suspension bearing.
  • the latter comprises two rings which are movable in rotation relative to each other while being able to transmit axial forces in two directions and overturning moments.
  • the first of these rings is secured to the pivot ring of the chute, and the second of these rings is secured to the second rotor so as to define said angle a for said inclined plane of rotation of the pivot ring.
  • the rolling elements arranged between the two rings of the bearing can be assimilated to multiple supports, which are distributed circumferentially around the trough and all actively contribute to the transmission in two directions of forces perpendicular to said inclined plane. of rotation. It will therefore be appreciated that all the rolling elements of the bearing participate in the resumption of said pivoting moment of the chute.
  • Another advantage of this embodiment resides in the fact that the bearing can be more easily protected against fouling by dust or smoke than bearings with rollers or insulated pads and their associated rolling surfaces.
  • the chute is advantageously fixed, in a rigid but removable manner, to a support plate provided with a central opening for the passage of the material to be distributed by the chute.
  • This support plate is then connected to the pivoting ring using a first pair of pivots so as to define the suspension axis around which the pivoting ring can pivot, and to the first rotor using 'a second pair of pivots so as to define the pivot axis of the chute.
  • This is a simple way of suspending the chute, which allows excellent transmission of said pivoting moment of the pivoting ring on the chute.
  • the support plate constitutes a kind of annular protective screen above the chute.
  • the chute can be disassembled without having to disassemble its suspension and that of the swivel ring.
  • Said first rotor and said second rotor are advantageously suspended in an external carcass which can be mounted in leaktight manner on an enclosure, for example a tank furnace.
  • a central feed channel then opens tightly into the external carcass and passes axially through said first and said second rotor and said central opening of the support plate of the chute.
  • the pivoting ring advantageously supports an insulation sheath coaxial with the axis of rotation which defines with an annular surface of the external carcass an air seal or annular slot.
  • the central supply channel is advantageously provided with a spherical bead which cooperates with the central opening of the support plate in which it is arranged, so as to define therein an air seal or slot annular.
  • the support plate is advantageously a disc limited by a spherical crown which cooperates with a central opening of the pivoting ring in which it is arranged so as to define therein an annular seal.
  • Figure 1 shows a section through a device for distributing bulk material according to the invention.
  • a device for loading a shaft furnace in particular a blast furnace.
  • This device comprises a chute 10 which can rotate around a substantially vertical axis 12 and whose inclination can be varied during its rotation.
  • the angle of inclination ⁇ of the chute with respect to the vertical can be varied while the chute rotates around the axis 12.
  • the reference 14 indicates a supply channel into which the bulk materials to be distributed are distributed by the chute 10.
  • This supply channel 14 is supported by an external carcass 16.
  • the carcass 16 is supported tightly on a shaft furnace, and the supply channel 14 is tightly connected to a hopper serving as a lock airlock upstream of the distribution or loading device (the shaft furnace and the hopper locks are not shown in the Figures).
  • the loading material flowing from the lock hopper then crosses the supply channel 14 to fall on the chute 10 and be guided by the latter towards the loading surface of the shaft furnace.
  • the point of impact of the loading material on the loading surface is varied by turning the chute around the axis of rotation 12 and / or by varying its angle of inclination ⁇ .
  • the chute In order to allow the chute to rotate around the axis 12, it is suspended from a first rotor 18, which forms a sort of rotary cage suspended using a first suspension bearing 20 in the carcass 16. It can be seen that the suspension bearing 20 is a large diameter bearing which surrounds the supply channel 14. A toothed crown 22 which is integral with the first rotor 18 and coaxial with the axis 12 is driven by a pinion 24. This pinion 24 makes it possible to give the first rotor 18 a rotational movement of speed ⁇ 1 around the axis 12. It will be noted that the rotor 18 surrounds the channel supply 14 and is provided at its lower part with two suspension flanges 28 and 28 'to support the chute 10.
  • the chute 10 is preferably rigidly fixed but easily removable on a support plate 30, which is provided with a central opening 32 for the passage of the supply channel 14.
  • This support plate 30 is then connected to the flanges of suspension 28 using a pair of pivots 32 'and 32 ", so as to define a pivot axis 33 for the chute 10.
  • this pivot axis 33 is horizontal, therefore perpendicular to the axis of rotation 12. In FIG. 1, this pivot axis 33 is perpendicular to the plane of the drawing.
  • a pivot ring 38 which generates the pivoting of the chute 10, is mechanically connected to the support plate 30 by means of a second pair of pivots or trunnions 34 and 34 'These are located in the pivot plane of the chute at two diametrically opposite points relative to the pivot axis 33 of the chute 10. They define for the pivot ring 38 a pivot axis 36 which is perpendicular and coplanar with the pivot axis 33 of the chute 10 and which forms with the chute 10, in the pivoting plane thereof, an angle ⁇ . It will be noted that the pivoting ring could now: 1) pivot around the axis 36; 2) pivot around the axis 33; 3) rotate around the axis 12. In other words, the pivoting ring 38 is equipped with a suspension of the Cardan type in rotation around the axis 12. It will however be seen below that some of these movements are limited by guide means supported by a second rotor which is generally identified by the reference 40.
  • the suspension and the drive of the second rotor 40 are produced in a similar manner to that described for the first rotor 18.
  • This second rotor in fact comprises a large diameter suspension bearing 42 and a toothed ring 44.
  • This toothed ring 44 is driven by a second pinion 46 to give the second rotor 40 a rotational movement of speed ⁇ 2 around the axis 12.
  • ⁇ 1 and ⁇ 2 can preferably be varied independently of one another.
  • the second rotor 40 is suspended from the bearing 42 and surrounds the first rotor 18. It is provided with an annular support flange 50 in an inclined plane making an angle a with a horizontal reference plane. It will be noted that in Figure 1 said inclined plane is perpendicular to the plane of the drawing.
  • a third suspension bearing 52 of large diameter is mounted with one of its two rings (for example with its outer ring) on this support flange 50.
  • the other ring of the bearing 52 (in FIG. 1 it is the inner ring) is on the other hand fixed to the pivoting ring 38.
  • the two rings of this bearing 52 are movable in rotation relative to each other while being able to transmit axial forces and enough overturning moments important in both directions.
  • the bearing 52 guides the pivoting ring 38 in a plane of rotation which forms with an horizontal reference plane an angle ⁇ . In the device shown in Figure 1 this angle ⁇ is approximately 25 °.
  • FIG. 2 is in principle identical to Figure 1.
  • the chute makes with the axis 12 an angle ⁇ of about 50 °. For the device shown, this is the maximum angle of inclination.
  • This angle of inclination ⁇ of the chute will remain constant as long as the first rotor 18 and the second rotor 40 rotate at the same speed; that is to say as long as there is no angular offset between the two rotors 40 and 18.
  • the angle of inclination ⁇ of the chute 10 increases again.
  • the chute 10 occupies the position shown in Figure 3 and for an angular offset of 360 ° the chute 10 is in the position shown in Figure 2.
  • the chute performs in its pivot plane (stationary in rotation) a pivoting of an amplitude of 2 ⁇ and of frequency ⁇ 2 / 60, where ⁇ 2 represents the speed of rotation in revolutions per minute of the second rotor 40.
  • the chute performs in a pivoting plane (this time turning with the first rotor 18) a pivoting of an amplitude of 2 ⁇ and of frequency ⁇ 1 / 60, where ⁇ 1 represents the speed of rotation in revolutions / minutes of the first rotor 18.
  • the angular offset between the two rotors 18 and 40 increases regularly and the chute 10 performs a movement of periodic pivoting between its maximum tilt position ( ⁇ max) and its minimum tilt position ( ⁇ min).
  • the pivoting ring 38 supports a cylindrical insulation sheath 54.
  • This insulation sheath 54 is coaxial with the axis of rotation 12 and forms with an annular surface 56 of the carcass 16 an annular air seal (or slot).
  • annular space 58 is delimited in the external carcass 16 which can be maintained under slight overpressure by injection of a gas.
  • the arrow 60 schematically represents means (for example pipes) for injecting such a gas. This reduces the penetration of dust and smoke into this annular space 58, in which are located in particular the bearings 20, 42, 52, the toothed rings 22, 44 and the pinions 24, 46.
  • this injected gas can be used when the device cools.
  • the insulation sheath 54 is advantageously provided with thermal insulation; while the annular surface 56 is advantageously cooled by a cooling liquid and, in the case of a blast furnace for example, provided with a protective coating against the thermal radiation of the loading surface. Such protection against thermal radiation is also advantageously applied or fixed below the pivoting ring 38 and the support plate 30.
  • the supply channel 14 is provided with a spherical bead 62 which is adjusted in the central opening 32 of the support plate 30.
  • This opening 32 includes a throttle section in which the bead 62 defines an annular air seal (or slot).
  • the plate support 30 is also advantageously a disk whose lateral surface 64 is a spherical ring which defines in the pivoting ring 38 an annular air seal (or slot).
  • the plate 30 could however also be rectangular and be adjusted in a rectangular opening in the ring of the pivoting ring 38. In this case it would be sufficient for the two lateral edges parallel to the axis 36 to take the form of a cylinder coaxial with the axis 36.
  • annular space 66 is created between the feed channel 14 and the rotor 40 which can be overpressured by injecting a pressurized gas into the carcass 16.
  • the annular spaces 58 and 66 are in direct communication with one another so as to avoid pressure differences inside the external carcass 16. Such pressure differences could indeed have a negative influence on the efficiency of the annular air seals (or slots) described above.
  • the bearing 52 is advantageously integrated in an annular cavity defined for example by the insulation sheath 54, the pivoting ring 38 and the annular flange 38 of the second rotor 40. In this way the bearing 52 is further protected further against excessive dust penetration and direct contact with hot or corrosive gases.
  • the first and the second rotor 18 and 40 are advantageously connected using a rotary connector to a cooling circuit (not shown). In this way, the main mechanical elements which are integral with either the first or the second rotor can be effectively cooled.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Blast Furnaces (AREA)
  • Electrotherapy Devices (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Physical Deposition Of Substances That Are Components Of Semiconductor Devices (AREA)
  • Discharge Of Articles From Conveyors (AREA)
  • Jigging Conveyors (AREA)
  • Chutes (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Saccharide Compounds (AREA)
  • Threshing Machine Elements (AREA)
  • Paper (AREA)
EP95905127A 1994-02-01 1995-01-09 Dispositif de repartition de matieres en vrac Expired - Lifetime EP0742840B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
LU88456A LU88456A1 (fr) 1994-02-01 1994-02-01 Dispositif de répartition de matières en vrac
LU88456 1994-02-01
PCT/EP1995/000060 WO1995021272A1 (fr) 1994-02-01 1995-01-09 Dispositif de repartition de matieres en vrac

Publications (2)

Publication Number Publication Date
EP0742840A1 EP0742840A1 (fr) 1996-11-20
EP0742840B1 true EP0742840B1 (fr) 1997-11-19

Family

ID=19731462

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95905127A Expired - Lifetime EP0742840B1 (fr) 1994-02-01 1995-01-09 Dispositif de repartition de matieres en vrac

Country Status (17)

Country Link
US (1) US5799777A (zh)
EP (1) EP0742840B1 (zh)
JP (1) JP3665338B2 (zh)
CN (1) CN1060523C (zh)
AT (1) ATE160381T1 (zh)
AU (1) AU1386295A (zh)
BG (1) BG61845B1 (zh)
BR (1) BR9506605A (zh)
CZ (1) CZ284435B6 (zh)
DE (1) DE69501079T2 (zh)
ES (1) ES2110312T3 (zh)
LU (1) LU88456A1 (zh)
PL (1) PL180501B1 (zh)
RU (1) RU2126451C1 (zh)
SK (1) SK280100B6 (zh)
UA (1) UA39132C2 (zh)
WO (1) WO1995021272A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101941597A (zh) * 2010-09-15 2011-01-12 国家粮食储备局郑州科学研究设计院 布粮器

Families Citing this family (23)

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Publication number Priority date Publication date Assignee Title
LU90179B1 (fr) * 1997-11-26 1999-05-27 Wurth Paul Sa Procede pour refroidir un dispositif de chargement d'un four a cuve
LU90295B1 (fr) * 1998-10-06 2000-04-07 Wurth Paul Sa Dispositif de répartition de matières en vrac
CZ296756B6 (cs) * 1998-11-16 2006-06-14 Paul Wurth S. A. Zarízení pro rozdelování sypkého materiálu, obsahující zlab s nastavitelným úhlem sklonu
DE19929180C2 (de) * 1999-06-25 2001-08-09 Zimmermann & Jansen Gmbh Beschickungsvorrichtung für einen Schachtofen
LU90642B1 (fr) 2000-09-20 2002-03-21 Wurth Paul Sa Dispositif de r-partition de mati-res en vrac avec goulotte rotative - angle d'inclinaison
LU90794B1 (fr) * 2001-06-26 2002-12-27 Wurth Paul Sa Dispositif de chargement d'un four à cuve
LU90863B1 (en) * 2001-12-13 2003-06-16 Wurth Paul Sa Charging device with rotary chute
DE10209675C1 (de) * 2002-03-05 2003-06-18 Man Takraf Foerdertechnik Gmbh Drehbare Schurre
AT412121B (de) * 2003-01-14 2004-09-27 Voest Alpine Ind Anlagen Vorrichtung zur kontrollierten beschickung eines reaktorgefässes
EP1770174A1 (en) 2005-09-30 2007-04-04 Paul Wurth S.A. Charging device for a shaft furnace
EP1870651A1 (en) * 2006-06-21 2007-12-26 Paul Wurth S.A. Charging device for a shaft furnace
US7654097B2 (en) * 2007-05-16 2010-02-02 Follett Corporation Ice distribution device for an ice retaining unit with optional sensor control therefor
FI121943B (fi) * 2007-11-21 2011-06-15 Outotec Oyj Jakelulaite
EP2487440B8 (en) * 2009-10-09 2018-04-18 Nippon Steel & Sumikin Engineering Co., Ltd. Loading device
GB2477779A (en) * 2010-02-15 2011-08-17 Siemens Vai Metals Tech Ltd Protection shielding blades for a furnace charging system
LU91683B1 (en) 2010-04-22 2011-10-24 Wurth Paul Sa Device for distributing bulk material with a distribution spout supported by a cardan suspension
LU91717B1 (en) * 2010-08-06 2012-02-07 Wurth Paul Sa Distribution device for use in a charging installation of a metallurgical reactor
LU91829B1 (en) * 2011-06-21 2012-12-24 Wurth Paul Sa Distribution chute for a charging device
LU91844B1 (en) * 2011-07-22 2013-01-23 Wurth Paul Sa Charging device for shaft furnace
JP5873386B2 (ja) * 2012-05-01 2016-03-01 新日鉄住金エンジニアリング株式会社 装入装置
JP6105357B2 (ja) * 2013-04-02 2017-03-29 新日鉄住金エンジニアリング株式会社 装入装置およびその制御方法
DE102018101498B3 (de) * 2018-01-23 2018-12-27 Wbn Waggonbau Niesky Gmbh Auslassvorrichtung eines Schüttgut-Transportsilos
CN113247578B (zh) * 2021-05-11 2022-10-25 中冶赛迪工程技术股份有限公司 溜槽托架安装缝隙的密封方法

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US3206044A (en) * 1963-12-09 1965-09-14 Martin C Schwichtenberg Orbital silage distributor
US3682394A (en) * 1971-02-03 1972-08-08 Charles C Shivvers Material spreader assembly
US3766868A (en) * 1972-02-22 1973-10-23 Anciens Etablissements P Warth Tuyere stock for furnaces
LU65312A1 (zh) * 1972-05-08 1972-08-23
DE2649248A1 (de) * 1976-10-29 1978-05-03 Koelsch Foelzer Werke Ag Vorrichtung zur beschickung eines schachtofens, insbesondere eines hochofens
JPS5522049A (en) * 1978-07-31 1980-02-16 Sanki Kk Device for fiber blending
DE2927316B1 (de) * 1979-07-06 1980-02-21 Demag Ag Mannesmann Verteilvorrichtung fuer Gichtverschluesse von Schachtoefen,insbesondere fuer Hochofen-Gichtverschluesse
LU82173A1 (fr) * 1980-02-15 1980-05-07 Wurth Sa O Dispositif de chargement pour fours a cuve
US4395182A (en) * 1980-10-10 1983-07-26 Suwyn Donald W Filling and distribution apparatus and method for silos
SU1392111A1 (ru) * 1985-09-23 1988-04-30 Государственный научно-исследовательский и проектный институт металлургической промышленности "Гипросталь" Распределитель шихты загрузочного устройства доменной печи
AT394631B (de) * 1988-07-25 1992-05-25 Wurth Paul Sa Handhabungsvorrichtung fuer eine verteilerschurre eines schachtofens, und an diese vorrichtung angepasster antriebsmechanismus
FR2636727B1 (fr) * 1988-09-16 1990-11-09 Valeo Dispositif de raccord rapide pour une boite a fluide dans un echangeur de chaleur
LU87341A1 (fr) * 1988-09-22 1990-04-06 Wurth Paul Sa Installation de chargement d'un four a cuve
US5002806A (en) * 1990-01-11 1991-03-26 Ashland Oil, Inc. Curative for structural urethane adhesive
LU87938A1 (fr) * 1991-05-15 1992-12-15 Wurth Paul Sa Installation de chargement d'un four a cuve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101941597A (zh) * 2010-09-15 2011-01-12 国家粮食储备局郑州科学研究设计院 布粮器

Also Published As

Publication number Publication date
JPH09508442A (ja) 1997-08-26
SK280100B6 (sk) 1999-08-06
AU1386295A (en) 1995-08-21
CZ284435B6 (cs) 1998-11-11
BG61845B1 (bg) 1998-07-31
US5799777A (en) 1998-09-01
CZ227996A3 (en) 1996-11-13
PL180501B1 (pl) 2001-02-28
CN1060523C (zh) 2001-01-10
SK99996A3 (en) 1997-01-08
BR9506605A (pt) 1997-09-23
PL315776A1 (en) 1996-12-09
RU2126451C1 (ru) 1999-02-20
WO1995021272A1 (fr) 1995-08-10
ES2110312T3 (es) 1998-02-01
DE69501079D1 (de) 1998-01-02
DE69501079T2 (de) 1998-03-12
JP3665338B2 (ja) 2005-06-29
ATE160381T1 (de) 1997-12-15
CN1141654A (zh) 1997-01-29
BG100738A (bg) 1997-04-30
LU88456A1 (fr) 1995-09-01
EP0742840A1 (fr) 1996-11-20
UA39132C2 (uk) 2001-06-15

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