Umbrella-shaped dirt separator for straight pipe section of flowmeter

The umbrella-shaped dirt separator comprises a plurality of cleaning strips, an automatic umbrella, a connecting rod and a driving mechanism, the automatic umbrella is horizontally arranged, the cleaning strips are evenly distributed on the periphery of the automatic umbrella in the circumferential direction and connected with the ends of umbrella ribs of the automatic umbrella, when the umbrella ribs are opened, the connecting rod is connected with the automatic umbrella, and the connecting rod is connected with the automatic umbrella. The cleaning strips are unfolded and are in an arc shape, one end of the connecting rod is coaxially connected with an umbrella handle of the automatic umbrella, the driving mechanism is arranged on the connecting rod and the umbrella handle, the input end of the driving mechanism is located at the other end of the connecting rod, and under the action of external force, the driving mechanism drives the cleaning strips to rotate. And the driving mechanism presses a switch butto