Electromagnetic flowmeter with protection function and use method thereof

The invention discloses an electromagnetic flowmeter with a protection function and a use method thereof, and belongs to the technical field of electromagnetic flowmeters.The electromagnetic flowmeter comprises a flowmeter body, a protection mechanism, an operation mechanism and an installation mechanism, the protection mechanism comprises a first bevel pipe and an inlet pipe, and the first bevel pipe is installed at the output end of the flowmeter body; the inlet pipe is installed at the input end of the flow meter body, the flow blocking effect is achieved through the auger, the first electric telescopic rod stretches out and draws back to drive the pressing block to move and apply pressure to the center shaft, so that rotation and locking of the auger are controlled, the first rolling shaft is driven to rotate through operation of the motor, and the flow meter body is driven to rotate through the belt. By means of the double-layer baffle structure, the better control effect on opening and closing of the va