Patent ID: 8215534

Claim:
A soldering tank comprising a soldering tank body for housing molten solder, a horizontal partition extending across the tank body below the level of molten solder in the tank body and creating a barrier between an upper portion of the tank body located above the partition and a lower portion of the tank body located below the partition and supported by side walls of the tank body such that molten solder is prevented from flowing from the upper portion to the lower portion of the tank body between the side walls of the tank body and the outer periphery of the partition around the entire periphery of the partition, the partition having first and second openings horizontally spaced from each other, a bowl-shaped guide secured to a lower side of the partition and having curved surfaces which are curved directly beneath the first and second openings for guiding fluid beneath the first and second openings, a nozzle having a lower end in fluid communication with the second opening in the partition and an upper end disposed above the level of molten solder in the tank body, and a multiple-blade screw-type pump having an impeller disposed so as to pump molten solder downwards through the first opening into a space between the partition and the bowl-shaped guide.