EP0382827A1 - Process and device for cleaning conveying channels. - Google Patents
Process and device for cleaning conveying channels.Info
- Publication number
- EP0382827A1 EP0382827A1 EP19890908819 EP89908819A EP0382827A1 EP 0382827 A1 EP0382827 A1 EP 0382827A1 EP 19890908819 EP19890908819 EP 19890908819 EP 89908819 A EP89908819 A EP 89908819A EP 0382827 A1 EP0382827 A1 EP 0382827A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drum
- conveyor
- column
- chains
- wall
- 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.)
- Granted
Links
Classifications
-
- 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
- F27D25/00—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag
- F27D25/001—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag comprising breaking tools, e.g. hammers, drills, scrapers
-
- 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
- F27D3/14—Charging or discharging liquid or molten material
- F27D3/145—Runners therefor
Definitions
- the invention relates to an improvement in a method and a device for cleaning refractory-lined conveyor troughs for molten metals and slags, in particular on blast furnaces, the cleaning being carried out by means of rotating chains.
- Vorricht_mg for cleaning refractory lined conveyor troughs by means of chains rotating on a rotatable drum is known.
- a continuously variable motor should be used to drive the drum.
- the speed By changing the speed, the intensity of the machining of the conveyor trough wall can be influenced, but it has proven difficult to recognize in advance which measure of machining is necessary at individual points.
- changing the speed means that different deposits, different refractory materials to be removed, and rinsing of the channel wall cannot be processed in an optimal manner. Since dust is whirled up to a considerable extent during the cleaning process, measures were also necessary to ensure adequate functioning.
- the invention has for its object to provide a method for cleaning fireproof-lined conveyor troughs for molten metals and slags, in particular for the device according to DE-PS 32 25 015, with which the cleaning process and the cleaning result on the channel lining is improved and also the Training device for performing this improved method.
- the solution to this problem is specified in the main claim.
- the subclaims relate to preferred developments of the method and preferred developments of the devices to be used in the method.
- a motor is used to drive the drum, the current consumption and / or speed of which changes as a function of the load.
- the chain ends striking the conveyor channel wall or sliding along it represent a load on the motor. From this load, which can be recognized, for example, from the current consumption, the distance between the drum and the conveyor channel wall can be concluded.
- the refractory material on the surface of the channel wall is worn out and worn, it can still be knocked off relatively easily by the chains.
- the refractory material is still perfect afterwards, it offers greater resistance to the chains. It is advantageous to have the chains work in an almost extended length on the channel wall, so that the material to be removed is practically detached by knocking the chain ends.
- a short-circuit rotor motor is therefore preferred for driving the drum, the current consumption of which is continuously measured by an ammeter, the change in the current consumption preferably being corrected by displacing the rotating drum transversely to the conveyor trough in order to achieve a desired distance value for optimal machining of the conveyor trough wall and thus also maintain a current consumption corresponding to this.
- a speed or another variable depending on the load could also be specified and monitored.
- the value corresponding essentially to the distance of the drum from the conveyor trough wall can be supplied as a measuring signal to an electrical control circuit in which control pulses for an automatic transverse displacement of the drum in accordance with the processing and in particular in adaptation to the sometimes irregular course of the Channel wall are generated.
- a suction device for extracting gases, smoke and dust during operation of the trough is usually provided on conveyor troughs, in particular on blast furnaces.
- conveyor troughs in particular on blast furnaces.
- the direction of rotation of the drive of the drum is reversible. The changing direction of rotation also avoids one-sided locking of the ends of the chains and increases their service life.
- Fig. 1 shows a section through the conveyor trough with a view of the device
- Fig. 2 is a plan view of the conveyor trough with the device indicated.
- the drum 1 is driven by a motor 6, in particular a squirrel-cage motor, whose direction of rotation is reversible.
- the device has a mobile frame 5.
- the chassis 5 is moved by two wheels 21 driven by motors 29, which run on a guide rail 20.
- Side guide rollers 22 are provided for lateral guidance along the rail 20.
- a column 30 is arranged on the frame 5 and can be moved transversely to the conveyor trough 3 by means of a chain hoist, preferably a round link chain 33, via a motor 32.
- the chain 33 is kept in a tensioned state, so that the displacement of the column 30 takes place without play and a fine adjustment is also possible.
- a round link chain has proven itself very well as a robust, reliable means of movement for the present case, in which dust and chunks can also come into contact with the means of movement and in which there is a heat influence from the still hot channel.
- the drum 1 and the drive motor 6 assigned to it are arranged on a vertically movable slide 31 which is guided on the column 30.
- a round link chain 35 which is only partially shown in the figure, is also preferred for the height adjustment. The height is adjusted by means of the motor 34.
- the device can be provided with an operating station 36.
- the device is electrically connected via a cable drum 37, which can be provided with a device for tensioning the cable (not shown).
- the electrical cables leading to the motors and the control station are not shown.
- FIG. 1 At one end of the conveyor trough 3, for example at the end facing the blast furnace, not shown, there are suction devices 40 for gases and / or smoke which can be used to vacuum dust during the cleaning of the trough. If the device by means of the wheels running on the rail 20 21 is pushed in the direction of arrow 12, the drum 1 rotates with the chains 2 in the direction of arrow 13, for example at a speed of 750 rpm. The optimum speed in each case depends on the length of the chain ends and the chain weight, and possibly also on the quality of the wall.
- a change in the current consumption of the motor 6 indicates that the contact between the wall and the ends of the chains no longer corresponds to the machining conditions considered to be optimal, so that an adjustment by lateral displacement of the drum according to arrow 10 is necessary.
- This readjustment may be necessary due to the different condition of the wall, but also due to the curve of the wall forming at individual points. For example, stronger rinsing off of the refractory material occurs in the part of the conveyor trough into which the pig iron flows, so that after some time the trough widening to which the cleaning device is to be adapted takes place. This adjustment can take place automatically depending on the current consumption of the motor.
- Fig. 2 the cleaning of the right wall of the conveyor trough 3 is indicated.
- the direction of rotation of the drum 1 is selected so that material chipped off the gutter is thrown in the direction of the suction 40.
- the device is moved back to its starting position and the drum 1 is shifted to the left side. You will be on this side with operated in the opposite direction of rotation, so that in turn the chipped material is thrown in the direction of the suction 40. It can be advantageous to advance the feed on both sides of the channel in the direction of the arrow 12, ie in the direction of the suction devices 40.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Furnace Charging Or Discharging (AREA)
Abstract
Un dispositif de nettoyage de rigoles de transport (3) à revêtement ignifuge pour métaux fondus et scories comprend des chaînes (2) agencées sur un tambour rotatif (1). Un moteur (6) dont la consommation de courant et/ou le régime se modifient en fonction de la charge est utilisé pour entraîner le tambour (1). Cette modification par rapport à une valeur de consigne prédéterminée est utilisée pour déplacer le tambour (1) transversalement à la rigole de transport (3) et pour obtenir un traitement optimal des parois de la rigole, qui est uniquement possible avec un écartement donné entre les parois et le tambour (1) et avec une charge du moteur (6) qui correspond à peu près audit écartement. Le sens d'entraînement du tambour (1) est réversible, de sorte que pendant le traitement des deux côtés de la rigole de transport (3), le matériau enlevé est rejeté dans la même direction.A device for cleaning transport channels (3) with a flame retardant coating for molten metals and slag comprises chains (2) arranged on a rotating drum (1). A motor (6) whose current consumption and / or speed changes depending on the load is used to drive the drum (1). This modification with respect to a predetermined setpoint is used to move the drum (1) transversely to the transport channel (3) and to obtain an optimal treatment of the walls of the channel, which is only possible with a given spacing between the channels. walls and the drum (1) and with a load of the motor (6) which corresponds approximately to said spacing. The driving direction of the drum (1) is reversible, so that during the processing of both sides of the transport channel (3), the removed material is rejected in the same direction.
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT89908819T ATE84363T1 (en) | 1988-08-12 | 1989-08-01 | METHOD AND DEVICE FOR CLEANING A CONVEYOR CHUTE. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3827400 | 1988-08-12 | ||
DE3827400A DE3827400A1 (en) | 1988-08-12 | 1988-08-12 | METHOD AND DEVICE FOR CLEANING A CONVEYOR |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0382827A1 true EP0382827A1 (en) | 1990-08-22 |
EP0382827B1 EP0382827B1 (en) | 1993-01-07 |
Family
ID=6360721
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89908819A Expired - Lifetime EP0382827B1 (en) | 1988-08-12 | 1989-08-01 | Process and device for cleaning conveying channels |
Country Status (7)
Country | Link |
---|---|
US (1) | US5014965A (en) |
EP (1) | EP0382827B1 (en) |
JP (1) | JPH03500425A (en) |
DE (2) | DE3827400A1 (en) |
HU (1) | HU208373B (en) |
WO (1) | WO1990001665A1 (en) |
ZA (1) | ZA895816B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9014109U1 (en) * | 1990-10-11 | 1990-12-13 | MBM Maschinenbau Mühldorf GmbH, 8260 Mühldorf | Device for restoring the flatness of the loading surface of hardening trolleys |
KR20020000930A (en) * | 2000-06-22 | 2002-01-09 | 김영진 | Fill method of liquid and its liquid receptacle |
GB2493969B (en) * | 2011-08-26 | 2013-08-07 | Siemens Plc | Slag dispersal device and method |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR689771A (en) * | 1930-01-15 | 1930-09-11 | Improvements to survey facilities | |
FR2037007B1 (en) * | 1969-04-30 | 1973-03-16 | Inst Francais Du Petrole | |
DE3225015C1 (en) * | 1982-07-03 | 1983-11-17 | Stahlwerke Peine-Salzgitter Ag, 3150 Peine | cleaning appts. for refractory lined runners - comprising chains mounted on rotating drum |
GB8615431D0 (en) * | 1986-06-24 | 1986-07-30 | Somafer Sa | Treatment of refractory lined transfer channels |
DE3741073A1 (en) * | 1987-12-04 | 1989-06-15 | Intocast Gmbh | METHOD AND DEVICE FOR RESTORING THE INPUT OF METALLURGICAL PANS |
-
1988
- 1988-08-12 DE DE3827400A patent/DE3827400A1/en not_active Withdrawn
-
1989
- 1989-07-31 ZA ZA895816A patent/ZA895816B/en unknown
- 1989-08-01 JP JP1508329A patent/JPH03500425A/en active Pending
- 1989-08-01 EP EP89908819A patent/EP0382827B1/en not_active Expired - Lifetime
- 1989-08-01 WO PCT/DE1989/000500 patent/WO1990001665A1/en active IP Right Grant
- 1989-08-01 HU HU894634A patent/HU208373B/en not_active IP Right Cessation
- 1989-08-01 DE DE8989908819T patent/DE58903235D1/en not_active Expired - Fee Related
-
1990
- 1990-04-04 US US07/505,050 patent/US5014965A/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9001665A1 * |
Also Published As
Publication number | Publication date |
---|---|
HUT57891A (en) | 1991-12-30 |
HU894634D0 (en) | 1991-11-28 |
US5014965A (en) | 1991-05-14 |
DE3827400A1 (en) | 1990-02-15 |
JPH03500425A (en) | 1991-01-31 |
EP0382827B1 (en) | 1993-01-07 |
WO1990001665A1 (en) | 1990-02-22 |
ZA895816B (en) | 1990-04-25 |
DE58903235D1 (en) | 1993-02-18 |
HU208373B (en) | 1993-09-28 |
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