"水泥浆搅拌机" can be translated into English as "cement slurry mixer" or "cement grout mixer".
"Cement slurry mixer" emphasizes the mixing of cement with water or other additives to form a slurry.
"Cement grout mixer" is also appropriate, especially when referring to the mixing of cement-based grout, which is often used in construction for filling gaps or reinforcing structures.
Both terms are commonly used in the construction and engineering industries.