EP1130266B1 - Schmelzenentnahmevorrichtung für Schmelzenöfen zur Beschickung von Giessmaschinen - Google Patents
Schmelzenentnahmevorrichtung für Schmelzenöfen zur Beschickung von Giessmaschinen Download PDFInfo
- Publication number
- EP1130266B1 EP1130266B1 EP20000890065 EP00890065A EP1130266B1 EP 1130266 B1 EP1130266 B1 EP 1130266B1 EP 20000890065 EP20000890065 EP 20000890065 EP 00890065 A EP00890065 A EP 00890065A EP 1130266 B1 EP1130266 B1 EP 1130266B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- loading
- melt
- pump
- discharge device
- tube
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D39/00—Equipment for supplying molten metal in rations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/30—Accessories for supplying molten metal, e.g. in rations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D3/00—Axial-flow pumps
- F04D3/02—Axial-flow pumps of screw type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/06—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metals
- F04D7/065—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metals for liquid metal
Definitions
- the invention relates to a melting removal device for Melting furnaces for feeding casters with a melt conveying pump from a lower melt inlet and an upper melt outlet forming pump tube and one inside the pump tube extending pump shaft carrying a pump rotor.
- a melting removal device for Melting furnaces for feeding casters with a melt conveying pump from a lower melt inlet and an upper melt outlet forming pump tube and one inside the pump tube extending pump shaft carrying a pump rotor.
- the invention is therefore based on the object, a melt removal device to create the kind of way that is characterized by their largely independent of changes in melt levels distinguished.
- the invention solves this problem in that the melt pump a charging device is arranged to keep the delivery height constant, which charging device a receiving the pump tube with the melt inlet Loading container and a loading container up to a loading height comprising a melting melt fillable charge pump, wherein the capacity of the charge pump exceeds that of the feed pump.
- the charge pump is also to vote on the pump, so on the one hand sufficient melt excess is conveyed into the loading container to a melt removal via the melt pump a drop in the Melting mirror within the cargo container under the melt overflow exclude, on the other hand, but also with the lowest possible melt overflow to be able to ensure a constant delivery height.
- the loading container from a melt inlet surrounding chamber with a lower suction opening and a towering consist of the melt overflow forming riser and the charge pump having a seated in the Ansaugö Stamms Symposium Superstamps. It comes to a compact assembly of melt conveyor pump and charging device, wherein the riser with respect to the flow cross section under consideration the risk of blockage caused by blockages u. Like. As small as possible will be measured.
- valve body of the vomströmventils As a valve body of the vomströmventils suitable valve plates od. Like. Be used in corresponding valve housings, it is advantageous but also possible that the hubver here arranged above the intake opening Charging rotor itself forms the valve body, so that at a drive rotation Lifting loader engine releases the intake and the non-powered Loading rotor closes the intake opening again when the weight drops.
- the loading container two sub-containers, one the pump tube receiving, closed on the floor charging unit and a charge pump receiving, the lower intake opening having filling part, comprising wherein the filling part and loading part via an overflow edge in fluid communication with each other stand and the filling part forms the melt overflow.
- the charger ensures the constant loading height and prevents this charger at the same time due to its closed bottom, a drop in this loading height at pump standstill, so that substantially always a constant head is guaranteed.
- the filling part with the charging pump secures the filling or Schmelzenbeaufdorfschung the charging part with a corresponding excess melt, so that in turn of outer melt level fluctuations independent, constant pressure conditions for the melt feed pump result.
- a furnace belonging to a sampling device To reach the loading container can be installed in a melting furnace wherein the charging part is separated from the storage space of the melting furnace, via the filling part to the storage space connected sampling chamber forms.
- the charging device can be integrated in a melting furnace and here secures the used in the loading part melt pump the desired constant delivery heights.
- a melt level measuring device can be provided in the loading part and the charge pump drive depending on the melt level of the Charging parts can be controlled, so that one exactly to the removal conditions can install adaptable charging device.
- melt feed pump a charging device 7 for keeping constant the delivery height upstream, which charging device a pump tube 2 with the melt inlet 3 receiving loading container 8 and a loading container up to a charge level determining melt overflow 9 melt-fillable Charging pump 10 includes, so that by the charging device 7 for the melt feed pump 1 a through the height difference between melt outlet 4 and melt overflow 9 resulting constant head h is ensured wherein the overflow 9 in the range of the maximum melt level O des Schmelzenbades S is located.
- the loading container 8th from a melt inlet 3 surrounding chamber 11 with a lower Intake port 12 and a towering, the melt overflow 9 forming Riser 13th Chamber 11 and riser 13 are coaxial with the pump tube 2 and the charge pump 10 has a pump rotor 6 also coaxial Loading rotor 14, which is below the pump tube 2 in the region of the suction port 12 on the pump shaft led out of the pump tube 5 sits.
- melt pump If the melt pump is put into operation, takes place simultaneously with the pump rotor 6 and the drive of the charge pump 10, the over their Loading rotor 14 promotes melt from the melt bath S in the chamber 11 and in its performance is dimensioned so that, despite the melt through the feed pump 1 amount of melt conveyed away a melt excess through the Riser 13 promoted to the overflow 9 and to overflow and backflow is brought into the melt bath.
- the loading container 8 the charging device 7 two sub-containers, a pump tube 2 receiving, closed loading part 18 and a loading pump 10 receiving the bottom, the lower intake opening 12 having filling part 19, wherein the Filling part and the loading part via an overflow edge 20 with each other in flow communication stand and the filling part 19 forms the melt overflow 9.
- the melt bath S via the charge pump 10 melt in the Filling 19 pumped until they on the one hand on the overflow edge 20 the charging part 18 filled and on the other hand over the melt overflow 9 in the melt bath flowing back.
- the constant Delivery head h for the melt removal ensured and also prevented the loading part 18 a drop in the loading height below that through the overflow edge 20 predetermined amount even during a pump standstill.
- FIG. 5 also shows a loading container 8 with a loading part 18 and a filling part 19, wherein loading and Be Shellteil are arranged side by side and over an overflow edge 20 with each other in fluid communication.
- the loading part is melt-filled via the filling part and the filling part 19 determines with its melt overflow 9 the constant Head h for melt extraction.
- the charge pump 10 is a below the Loading parts at the extended end 21 of the pump shaft 5 seated loading rotor 14th has, in the embodiment of FIG. 5 is a melt to the feed pump 1 parallel charge pump 10 with its own drive shaft 22 and suitable Loading rotor 14 used in the filling 19, so that by an independent Charge pump control of the loading operation adapted exactly to the removal operation can be.
- Fig. 6 is an embodiment of FIG. 5 similar embodiment with juxtaposed loading and Be Scholl money 18, 19 vorg Consumer, where the possibility is indicated, as a charge pump 10 with a Feed pump 1 same pump 23 to use, the melt outlet 4 in the Charging part 18 opens.
- the charging device 7 can also be directly in a melting furnace 24 may be installed, wherein the loading container 8 of the charging device 7 is integrated into the storage space 25 of the melting furnace 24 and with its charging part 18 a separated from the storage space 25, on the Be Schollteil 19 connected to the storage space 25 extraction chamber forms.
- the charge pump 10 discharges melt the storage space 25 in the filling part 19, from where this melt on the Overflow edge 20 enters the loading section 18 and for the melt removal by the feed pump 1 at a substantially constant level of the melt is held, which in turn ensures a constant head h.
- a melt level measuring device 26 may be used the charge pump 10 with regard to its drive as a function of the melt level the sampling chamber are controlled, so that a fine-tuning of the Loading operation is possible to the removal operation.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
- Fig. 1 bis 7
- sieben Ausführungsbeispiele einer erfindungsgemäßen Schmelzenentnahmevorrichtung jeweils an Hand eines Axialschnittes.
Claims (13)
- Schmelzenentnahmevorrichtung für Schmelzenöfen zur Beschickung von Gießmaschinen mit einer Schmelzenförderpumpe (1) aus einem einen unteren Schmelzeneinlauf (3) und einen oberen Schmelzenauslauf (4) bildenden Pumpenrohr (2) und einer innerhalb des Pumpenrohres (2) verlaufenden, einen Pumpenrotor (6) tragenden Pumpenwelle (5), dadurch gekennzeichnet, daß der Schmelzenförderpumpe (1) eine Ladeeinrichtung (7) zum Konstanthalten der Förderhöhe (h) vorgeordnet ist, welche Ladeeinrichtung (7) einen das Pumpenrohr (2) mit dem Schmelzeneinlauf (3) aufnehmenden Ladebehälter (8) und eine den Ladebehälter (8) bis zu einem die Ladehöhe bestimmenden Schmelzenüberlauf (9) schmelzenbefüllbare Ladepumpe (10) umfaßt, wobei die Förderleistung der Ladepumpe (10) die der Förderpumpe (1) übersteigt.
- Schmelzenentnahmevorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Ladebehälter (8) aus einer den Schmelzeneinlauf (3) umgebenden Kammer (11) mit einer unteren Ansaugöffnung (12) und einem hochragenden, den Schmelzenüberlauf (9) bildenden Steigrohr (13) besteht und die Ladepumpe (10) einen im Ansaugöffnungsbereich (12) sitzenden Laderotor (14) aufweist.
- Schmelzenentnahmevorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß der Ansaugöffnung (12) ein Rückströmventil (15) mit einem die Ansaugöffnung (12) gegensinnig zur Ansaugrichtung verschließenden Ventilkörper (16, 17) zugeordnet ist.
- Schmelzenentnahmevorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß der oberhalb der Ansaugöffnung (12) hubverstellbar angeordnete Laderohr (14) selbst den Ventilkörper (16) bildet.
- Schmelzenentnahmevorrichtung nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß der Ladebehälter (8) koaxial zum Pumpenrohr (2) angeordnet ist.
- Schmelzenentnahmevorrichtung nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, daß die Pumpenwelle (5) nach unten aus dem Pumpenrohr (2) herausgeführt ist und mit ihrem vorragenden Ende als Antriebswelle für den Laderotor (14) dient.
- Schmelzenentnahmevorrichtung nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, daß der Laderotor auf einer eigenen, durch die hohle Pumpenwelle geführten Antriebswelle sitzt.
- Schmelzenentnahmevorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Ladebehälter (8) zwei Teilbehälter, einen das Pumpenrohr (2) aufnehmenden, bodenseits geschlossenen Ladeteil (18) und einen die Ladepumpe (10) aufnehmenden, die untere Ansaugöffnung (12) aufweisenden Befüllteil (19), umfaßt, wobei Befüllteil und Ladeteil über eine Überströmkante (20) miteinander in Strömungsverbindung stehen und der Befüllteil (19) den Schmelzenüberlauf (9) bildet.
- Schmelzenentnahmevorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß Ladeteil (18) und Befüllteil (19) koaxial zum Pumpenrohr (2) angeordnet sind und der Befüllteil (19) den Ladeteil (18) umgibt, wobei die Ladepumpe (10) einen unterhalb des Ladeteils (18), auf einer aus dem Ladeteil herausgeführten Antriebswelle sitzenden Laderotor (24) aufweist.
- Schmelzenentnahmevorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß Ladeteil (18) und Befüllteil (19) nebeneinander angeordnet sind und die Ladepumpe (10) des Befüllteils (19) eine zur Pumpenwelle (5) parallele Antriebswelle (22) mit einem unteren Laderotor (14) aufweist.
- Schmelzenentnahmevorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß der Befüllteil (19) eine der Schmelzenförderpumpe (1) ähnliche Pumpe (23) als Ladepumpe (10) aufnimmt, deren Schmelzenauslauf (4) vorzugsweise in den Ladeteil (18) ausmündet.
- Schmelzenentnahmevorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß der Ladebehälter (8) in einen Schmelzenofen (24) eingebaut ist, wobei der Ladeteil (18) eine vom Speicherraum (25) des Schmelzenofens (24) abgetrennte, über den Befüllteil (19) an den Speicherraum (25) angeschlossene Entnahmekammer bildet.
- Schmelzenentnahmevorrichtung nach Anspruch 12, dadurch gekennzeichnet, daß im Ladeteil (18) eine Schmelzenniveau-Meßeinrichtung (26) vorgesehen und der Ladepumpenantrieb in Abhängigkeit vom Schmelzenniveau des Ladeteils (19) ansteuerbar ist.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20000890065 EP1130266B1 (de) | 2000-03-02 | 2000-03-02 | Schmelzenentnahmevorrichtung für Schmelzenöfen zur Beschickung von Giessmaschinen |
DE50011444T DE50011444D1 (de) | 2000-03-02 | 2000-03-02 | Schmelzenentnahmevorrichtung für Schmelzenöfen zur Beschickung von Giessmaschinen |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20000890065 EP1130266B1 (de) | 2000-03-02 | 2000-03-02 | Schmelzenentnahmevorrichtung für Schmelzenöfen zur Beschickung von Giessmaschinen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1130266A1 EP1130266A1 (de) | 2001-09-05 |
EP1130266B1 true EP1130266B1 (de) | 2005-10-26 |
Family
ID=8175912
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20000890065 Expired - Lifetime EP1130266B1 (de) | 2000-03-02 | 2000-03-02 | Schmelzenentnahmevorrichtung für Schmelzenöfen zur Beschickung von Giessmaschinen |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1130266B1 (de) |
DE (1) | DE50011444D1 (de) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2317035A1 (fr) * | 1975-07-07 | 1977-02-04 | Activite Atom Avance | Dispositif d'alimentation d'installation de coulee |
US4398589A (en) * | 1981-09-25 | 1983-08-16 | General Electric Company | Pumping and metering device for fluid metals using electromagnetic pump |
GB8923690D0 (en) * | 1989-10-20 | 1989-12-06 | Drg Uk Ltd | Casting apparatus |
US5427501A (en) * | 1994-05-03 | 1995-06-27 | Parker-Hannifin Corporation | Fuel pump impeller with pump down extension |
DE4420655A1 (de) * | 1994-06-14 | 1995-12-21 | Karl Ley Fa | Fördervorrichtung für NE-Metallschmelzen |
DE19541093A1 (de) * | 1995-11-03 | 1997-05-07 | Michael Heider | Pumpvorrichtung für einen Schmelzofen zum Fördern von flüssigen Metallegierungen |
-
2000
- 2000-03-02 EP EP20000890065 patent/EP1130266B1/de not_active Expired - Lifetime
- 2000-03-02 DE DE50011444T patent/DE50011444D1/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP1130266A1 (de) | 2001-09-05 |
DE50011444D1 (de) | 2005-12-01 |
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