Automatic salt dissolving tank

The utility model relates to an automatic salt dissolving tank which comprises a salt dissolving tank body, one side of the salt dissolving tank body is connected with a water inlet pipe, the water inlet pipe extends into the salt dissolving tank body, the water inlet pipe is connected with an electric valve, the end, extending into the salt dissolving tank body, of the water inlet pipe is connected with a floating ball valve, and when the liquid level in the salt dissolving tank body reaches an ultrahigh liquid level value, the floating ball valve closes the water inlet pipe; an overflow port is formed in the salt dissolving tank body, the salt dissolving tank body is fixedly connected with a liquid level meter and a water outlet pipe, the water outlet pipe is communicated with the salt dissolving tank body, the water outlet pipe is fixedly connected with a brine pump, the salt dissolving tank body is connected with a control circuit, and the control circuit comprises a detection module, a comparison module,