Rechargeable miniature direct-current diaphragm submersible pump

The utility model provides a rechargeable miniature direct current diaphragm submersible pump which comprises an upper cover and a pump body, the top of the upper cover is provided with a key switch, a charging jack and a speed regulator, the upper cover is provided with a water outlet hole and a flow guide channel, the flow guide channel is arranged on the radial side of the water outlet hole and communicated with the water outlet hole, and the bottom of the upper cover is provided with a detection hole. A pressure switch is arranged at the detection hole at the bottom of the upper cover; the upper cover is also provided with a sealing head used for plugging the charging jack. The pump body comprises a shell, the shell is connected with the upper cover in a sealed mode, a water outlet pipe, a motor and a battery are arranged in the shell, and the bottom of the shell is connected with a pump head in a sealed mode. The device is powered by the battery and is not limited by a power supply when in use; the speed