The invention discloses a method for preparing a microporous concrete emitter through combination of
dry pressing and vacuum atomization. According to the method,
cement and sand are adopted as raw materials, a silica
sol is adopted as a mold pressing
adhesive, a microporous concrete billet is prepared by using a
dry pressing method, and an emitter billet is subjected to curing by using a vacuum atomization and humidification method so as to finally obtain the microporous concrete emitter. According to the present invention, by regulating the
cement content in the raw materials, the particle size of the sand, and the vacuum atomization maintenance process, the opening
porosity of the microporous concrete emitter can be effectively regulated so as to achieve the accurate control of the seepage amount of the emitter; the manufacturing cost is much lower than the cost of the microporous
ceramic emitter, and the performance test results show that the microporous concrete emitter has the same excellent
mechanical property and the same excellent water permeability as the microporous
ceramic; and the method has advantages of cheap and easily-available raw materials, simple and easy-performing curing process, high opening
porosity, stable
mechanical property, excellent water permeability, and the like.