Dual-tank control valve structure

A dual-tank control valve structure, comprising:

• a primary valve assembly connected to an auxiliary valve assembly via an auxiliary tank upper opening connection port and an auxiliary tank center pipe connection port;
• the primary valve assembly comprising:
• a primary valve body in which a regeneration piston chamber and a switching piston chamber arranged adjacent to each other in juxtaposition are formed;
• the regeneration piston chamber in which a plurality of seals are arranged at intervals, the seals dividing the regeneration piston chamber into regeneration chamber I to regeneration chamber V arranged in sequence from a chamber opening to a chamber bottom;
• the switching piston chamber in which a plurality of seals are arranged at intervals, the seals dividing the switching piston chamber into switching chamber I to switching chamber IX arranged in sequence from a chamber opening to a chamber bottom;
• a switching piston inserted into the chamber opening of the switching piston chamber and slidable in the seal;
• a regeneration piston inserted into the chamber opening of the regeneration piston chamber and slidable in the seal;
• a water inlet communicated with the switching chamber VII;
• a water outlet communicated with the switching chamber III;
• a water discharge port communicated with the regeneration chamber I;
• and
• a tank body connection seat connected to the primary valve body via a snap-in connection port,
• wherein the regeneration chamber II is aligned with the switching chamber I and communicated with the switching chamber I via a groove I, the regeneration chamber IV is aligned with the switching chamber III and communicated with the switching chamber III via a groove II, and the regeneration chamber V is communicated with the switching chamber IX.