SCRAP MELTER AND IMPELLER THEREFORE
First Claim
1. A device for generating a downward and radial stream of molten metal in a scrap melter, the device including:
- (a) a drive source;
(b) a drive shaft having a first end and a second end, the first end connected to the drive source; and
(c) an impeller connected to the second end of the drive shaft, the impeller having two or more outwardly extending blades, at least one blade having a leading face, the leading face including a vertical lip and a portion that directs molten metal at least partially downward, the impeller having a hub wherein each blade extends outwardly from the hub by at least 10″
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Accused Products
Abstract
A device for submerging scrap metal includes: (a) a drive source, (b) a drive shaft having a first end and a second end, the first end being connected to the drive source, and (d) an impeller connected to the second end of the drive shaft, the impeller preferably having two or more outwardly-extending blades. Preferably, each of the blades has a portion that directs molten metal at least partially downward. The impeller design leads to lower operating speeds, lower vibration, longer component life and less maintenance. Additionally, the impeller preferably has a connective portion. The connective portion is used to connect the impeller to the shaft and preferably comprises a nonthreaded, tapered bore extending through the impeller.
181 Citations
38 Claims
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1. A device for generating a downward and radial stream of molten metal in a scrap melter, the device including:
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(a) a drive source; (b) a drive shaft having a first end and a second end, the first end connected to the drive source; and (c) an impeller connected to the second end of the drive shaft, the impeller having two or more outwardly extending blades, at least one blade having a leading face, the leading face including a vertical lip and a portion that directs molten metal at least partially downward, the impeller having a hub wherein each blade extends outwardly from the hub by at least 10″
. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A device for generating a downward and radial stream of molten metal in a scrap melter, the device including:
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(d) a drive source; (e) a drive shaft having a first end and a second end, the first end connected to the drive source; and (f) an impeller connected to the second end of the drive shaft, the impeller having two or more outwardly extending blades, at least one blade including a vertical face that directs molten metal at least partially outward from the impeller, wherein the blade has a square cross section, and wherein the impeller has a hub and each blade extends outward from the hub by at least 10″
. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. A device for generating a downward and radial stream of molten metal in a scrap melter, the device comprising:
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a drive source; a drive shaft having a first end connected to the drive source and a second end; and an open impeller connected to the second end of the drive shaft for circulating molten metal, the impeller comprising; a hub; three or more blades extending outwardly from said hub, there being spaces between the blades, wherein at least one of said three or more blades includes a leading face with an angled surface for directing molten metal at least partially in a downward direction and a trailing face, and wherein at least one of said three or more blades includes a leading face with a vertical surface for directing molten metal at least partially in a radially outward direction and a trailing face. the hub including a non-threaded tapered bore for receiving an end of a drive shaft. - View Dependent Claims (25, 26, 27, 28, 29)
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30. A device for melting scrap metal, the device comprising:
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(a) a vessel containing molten metal; and (b) a scrap melter positioned in the vessel, the scrap melter comprising; (i) a drive source; (ii) a drive shaft having an first end and a second end, the first end being connected to the drive source; and (iii) an impeller connected to the second end of the drive shaft, the impeller having two or more outwardly extending blades, at least one blade having a leading face, the leading face including a vertical lip portion and a portion that directs molten metal at least partially downward, the impeller having a hub wherein each blade extends outwardly from the hub by at least 10″
. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38)
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Specification