Sewage desliming device for environmental protection engineering

The utility model is applicable to the technical field of sewage treatment, and provides a sewage desliming device for environmental protection engineering, which comprises a desliming bin designed in a cuboid shape, sealing doors are arranged on two symmetrical side surfaces of the desliming bin, nuts are arranged on the sealing doors, the nuts can move up and down in sliding chutes, and the sealing doors are connected with the desliming bin. A sliding cavity is formed in the desliming bin, a sealing door is arranged in the sliding cavity and can move up and down in the sliding cavity, a filter screen is installed in the desliming bin, a push plate is arranged on the left side of the desliming bin, and silt on the filter screen can be pushed out of the desliming bin through the sealing door by the push plate, so that the desliming efficiency is improved; on the basis of a traditional sewage desliming method, a silt treatment link is newly added, silt accumulated on a filter screen is automatically pushed int