Water level monitoring device of geothermal well

The utility model discloses a water level monitoring device of a geothermal well and belongs to the technical field of water level detection of geothermal wells. The monitoring device comprises an electric control box, a servo motor, a coder, a microswitch, a spool, a wire and a probe. A PLC module, an electric control module, a human-computer interaction module and a relay module are arranged in the electric control box, wherein the electric control module, the human-computer interaction module and the relay module are electrically connected with the PLC module. The electric control module is electrically connected with the servo motor, and the I/O ports of the PLC module are electrically connected with the coder and the microswitch respectively. The center shaft of the spool is connected with the servo motor through a revolving shaft. The coder is connected with a synchronous gear through the spool. The microswitch is arranged on the spool, and the wire is wound on the spool in a winding mode. One end of th