Constant mud level control device

The utility model relates to the technical field of constant sludge level control, and discloses a constant sludge level control device which comprises a transmission shaft, a sludge thickening tank and a main beam, the main beam is used for supporting the transmission shaft, scraping arms are fixedly installed on the left side and the right side of the transmission shaft, scraping plates are evenly distributed on the lower end faces of the scraping arms, and the scraping plates are fixedly installed on the transmission shaft. A groove is formed in the side, away from the scraping arm, of the scraping plate, and connecting mechanisms corresponding in position are arranged in the left side and the right side of the scraping plate. The brush, the connecting mechanism, the scraping plate and the protective sleeve are matched, the connecting mechanism is arranged, the connecting effect of the brush and the scraping plate is achieved, the brush mounting effect is achieved, the brush replacement problem is effectiv