Large soy sauce fermentation tank with single-stage water pressure series jackets

The invention discloses a large soy sauce fermentation tank with single-stage water pressure series jackets, which comprises a fermentation tank, at least two layers of jackets with built-in diversion trenches and a series jacketed pipeline; the jackets are sleeved on the outer wall of the fermentation tank in a surrounding manner; a water inlet pipe of each layer of jacket is connected with a pressure limiting box; the pressure limiting box is composed of a box body, a pressure limiting water inlet pipe, a pressure limiting water outlet pipe, a floating ball valve and a constant pressure component, wherein the pressure limiting water inlet pipe extends into the middle of the box body; the floating ball valve is arranged at a pipe port of the pressure limiting water inlet pipe; the constant pressure component is installed on the upper portion of the pressure limiting box; the pressure limiting water outlet pipe is connected with the water inlet pipe of the jacket; the pressure limiting water inlet pipe is con