Gas-transfer foot
a technology of gas transfer foot and gas transferring rod, which is applied in the direction of machines/engines, transportation and packaging, liquid fuel engines, etc., can solve the problem of low-pressure area behind
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[0039] Reference will now be made in detail to the present exemplary embodiments of the invention, examples of which are illustrated in the accompanying drawings. FIG. 1A depicts a molten metal pump 100 according to the invention. When in operation, pump 100 is typically positioned in a molten metal bath in a pump well, which is typically part of the open well of a reverbatory furnace. Pump 100 includes motor 120, superstructure 130, support posts 132, drive shaft 122, rotor 110, base 200, gas-transfer foot 300 and gas-transfer tube 350.
[0040] The components of pump 100 that are exposed to the molten metal (such as support posts 132, drive shaft 122, rotor 110, base 200, gas-transfer foot 300 and gas-transfer tube 350) are preferably formed of structural refractory materials, which are resistant to degradation in the molten metal. Carbonaceous refractory materials, such as carbon of a dense or structural type, including graphite, graphitized carbon, clay-bonded graphite, carbon-bon...
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