Top-flow centrifugal fluid pump

A corrosive fluid pumping system including a tub adapted to hold a corrosive fluid and a fluid pump, the fluid pump comprising:

• a housing defining a pump chamber;
• a fluid inlet communicating with the pump chamber;
• an impeller positioned within the pump chamber;
• a drive shaft extending through the fluid inlet and coupled to the impeller;
• a shaft sleeve secured to the impeller and surrounding the drive shaft;
• a pump pedestal secured to the housing and surrounding the shaft sleeve, the pump pedestal supporting a drive motor coupled to the drive shaft, and the pump pedestal including at least one fluid inlet port;
• wherein one or more of the pump chamber, the impeller, the shaft sleeve, and the pump pedestal are formed from or coated with a corrosion and high-temperature resistant material;
• and,
• wherein the corrosion and high-temperature resistant material is from the group consisting of polytetrafluoroethylene and quartz.

A fluid pump for a corrosive fluid comprising:

• a housing defining a pump chamber;
• a corrosion resistant impeller positioned within said pump chamber;
• a drive shaft construction for rotating the impeller wherein said drive shaft construction comprises:
• a drive shaft, and
• a corrosion resistant shaft sleeve surrounding said drive shaft;
• an opening in a wall of said pump chamber through which said drive shaft construction extends into said pump chamber;
• a toroidal fluid inlet defined between said drive shaft construction and a wall of said housing through which fluid flows into said pump chamber;
• a fluid outlet communicating with said pump chamber;
• and,
• a filtration unit coupled to the fluid outlet.

A fluid pump for a corrosive fluid comprising:

• a housing defining a pump chamber;
• a corrosion resistant impeller positioned within said pump chamber;
• a drive shaft construction for rotating the impeller wherein said drive shaft construction comprises:
• a drive shaft, and
• a corrosion resistant shaft sleeve surrounding said drive shaft;
• an opening in a wall of said pump chamber through which said drive shaft construction extends into said pump chamber;
• a toroidal fluid inlet defined between said drive shaft construction and a wall of said housing through which fluid flows into said pump chamber;
• a fluid outlet communicating with said pump chamber;
• and,
• two opposed fluid outlets which communicate with the pump chamber.