This utility model relates to the technical field of water conservancy construction equipment, and discloses a dredging device for water conservancy construction, including a
sludge treatment
pipe. A cover plate is sealed at the
tail end of the
sludge treatment
pipe, and a
sewage guide
pipe is connected to the front end of the
sludge treatment pipe. A rotating shaft is rotatably installed inside the cover plate, with its front end extending into the
sewage guide pipe and a feeding
auger installed on its outer side. Multiple sets of
cutting blades are installed on the outer side of the portion of the rotating shaft located inside the sludge treatment pipe. A water pump is connected to the upper side wall of the sludge treatment pipe, and a water guide pipe is installed at the water inlet end of the water pump. A
sewage discharge pipe is connected to the rear part of one side wall of the sludge treatment pipe, and a sludge extractor is installed at the other end of the
sewage discharge pipe. The advantages of this utility model compared with the prior art are: the feeding
auger collects the sludge into the sludge treatment pipe; the water pump and the water guide pipe draw water from the upper part of the river into the sludge treatment pipe; the multiple sets of
cutting blades
cut and break up the sludge, and mix it evenly with the water, resulting in a higher
water content in the sludge and preventing sludge blockage inside the
sewage discharge pipe.