Small and simple seawater desalination device

The invention provides a small and simple seawater desalination device, comprising a raw material water pump, a condenser, an evaporator group, a pipeline mixer, a fresh water pump, a drainage adjustable valve and a pipeline connecting the above apparatuses. The seawater desalination device also comprises a circulation water pump. The raw material water pump, the condenser, the evaporator, the pipeline mixer and the circulation water pump are connected in sequence; a concentrated seawater pipeline of the condenser is connected with the pipeline mixer; and an intermediate water pump is connected with the water inlet pipeline of the evaporator. The small and simple seawater desalination device optimizes the design and the control mode of the pipeline, simplifies the number of the water pump, reduces cost, increases heat utilization rate and reduces electricity consumption rate. The device is compact in structure, fast in starting, simple in operation, convenient for maintenance and safe and reliable in operations.