Magnetic coupling type rodless cylinder double-dust-scraping structure

The utility model discloses a magnetic coupling type rodless air cylinder double-dust-scraping structure which comprises a cylinder barrel and a sliding block assembly arranged on the cylinder barrel in a sliding mode, sliding block plugs are embedded into the two ends of the sliding block assembly, a front dust scraping ring and a rear dust scraping ring are embedded into any sliding block plug, the rear dust scraping ring is arranged on the periphery of the cylinder barrel in a sleeving mode, and the front dust scraping ring and the rear dust scraping ring are arranged on the periphery of the cylinder barrel in a sleeving mode. Protruding sharp lips abutting against the outer circumference of the cylinder barrel are arranged on the two sides of the inner wall of the rear dust scraping ring, and the two sharp lips are used for supporting the rear dust scraping ring to move coaxially with the cylinder barrel. According to the dust scraping structure arranged in the mode, on one hand, the dust scraping capacit