Scraping plate height adjusting device of sludge scraper

The invention discloses a scraping plate height adjusting device of a sludge scraper. A horizontal scraping plate is arranged between support legs on the two sides of a rack; the plate ends on the twosides of the scraping plate each are fixedly connected with a connection sleeve block; the connection sleeve blocks sleeve the support legs on the two sides of the rack, and the connection sleeve blocks mounted on the rack are locked by locking bolts to be fixedly arranged on the support legs on the two sides of the rack; two threaded blocks are fixedly welded with the top surface of the scrapingplate, and the two threaded blocks and the bottom ends of corresponding adjusting screw rods are mounted in a threaded fit mode respectively; and the top ends of the adjusting screw rods are insertedin threaded holes of a top plate of the rack, and the adjusting screw rods and the top plate of the rack are assembled in a threaded fit mode. The scraping plate height adjusting device is characterized in that the structure i