Solution circulation concentrating device with high solar energy utilization efficiency and concentrating method using the same

A concentrating method based on the solution circulation concentrating device with high solar energy utilization efficiency, wherein the solution circulation concentrating device with high solar energy utilization efficiency comprises a concentrated solution collecting tray, an evaporator, a rotation driving device, a liquid inlet pipe, a liquid outlet pipe, a liquid storage tank, a filter tank, and a rainwater discharge pipe,

• wherein the concentrated solution collecting tray is rotatably connected with the evaporator, the evaporator is connected with the rotation driving device, and the rotation driving device is configured for driving the evaporator to rotate;
• the liquid inlet pipe and the liquid outlet pipe is arranged at the concentrated solution collecting tray, the liquid inlet pipe is configured to pass through the evaporator, a liquid outlet of the liquid inlet pipe is located at an upper end of the evaporator, a liquid inlet of the liquid outlet pipe is located on a surface of the concentrated solution collecting tray, a liquid outlet of the liquid outlet pipe and a liquid inlet of the liquid inlet pipe are connected to the liquid storage tank, respectively, and the filter tank is arranged on the liquid outlet pipe;
• the concentrated solution collecting tray is connected with the rainwater discharge pipe, and the rainwater discharge pipe is configured for discharging rainwater;
• the concentrating method comprising:
• during normal operation, closing the rainwater discharge pipe, opening the liquid inlet pipe and the liquid outlet pipe, enabling solution in the liquid storage tank to flow in from the liquid inlet of the liquid inlet pipe, and then flow out from the liquid outlet of the liquid inlet pipe and be sprayed onto the evaporator;
• during this process, driving the evaporator to keep rotating by the rotation driving device, and enabling the solution flowing out of the evaporator to flow back into the liquid storage tank through the liquid outlet pipe, so that a concentration cycle is completed;
• repeating the concentration cycle several times until the solution in the liquid storage tank reaches an expected concentration;
• when it rains, closing the liquid inlet pipe and the liquid outlet pipe, opening the rainwater discharge pipe, and enabling rainwater in the concentrated solution collecting tray to flow out from the rainwater discharge pipe.