Drainage device for plastic track

The utility model relates to a drainage device for a plastic track, which comprises a filter box, a scraper blade, a fixed disc and a propping unit, a V-shaped filter plate and a filter screen are fixedly connected in the filter box, one end of the filter box is fixedly connected with a drainage pipe, the filter box is also provided with a plurality of groups of through holes, the scraper blade is slidably arranged in the V-shaped filter plate, and the fixed disc is fixedly connected with the filter screen. The outer part of the scraping plate is fixedly connected with a sliding rod, the sliding rod penetrates through and is connected to the filter box in a sliding manner, an outlet is formed in the position, corresponding to the scraping plate, of the side part of the filter box, a baffle plate is arranged in the outlet, the baffle plate is fixedly connected with the sliding rod, and the fixed disc is fixedly connected to the outer part of the sliding rod. Through the arrangement of the V-shaped filter plate