Desilter for oil field

The utility model relates to a desilter for oil fields and belongs to the field of cleaning equipment for a well drilling solid control device. The desilter is characterized by comprising a fluid inlet, a material feeding bin, hydrocyclones, a fluid discharge bin, fluid outlets and a sand discharge bin. The fluid inlet is connected with the material feeding bin which is connected with the hydrocyclones. The overflow mouth of each hydrocyclone is connected with the fluid discharge bin. The relatively heavy solid particles in drilling fluid are thrown to a barrel wall under the impact of centrifugal force, sink spirally along the inner wall of the hydrocyclones, under the effects of the thrust from the downward rotation of the drilling fluid, and the deadweight of the drilling fluid, and are discharged into the sand discharge bin through a mud outlet. Then the relatively heavy solid particles flow to the screen surface of a vibrating screen, so the drilling fluid and the solid particles are separated, and there