drilling fluid vibrating screen and vacuum degasser, the desander and desilter,mud gas separater,mud agitator, centrifugal pump, shear pumps, centrifuge, flare ignition devices, mixed funnel, jet mud mixer, tanks of oil drilling solid control equipment and complete sets of mud purification system, the excavation mud recycling system, gas layer exploration mud recycling system, shield mud recycling system, and the river purification system.