Sand separator compact structure, simple operation, the process can be manually controlled, automatic, fault-wide display, easy to transport, installation, and maintenance. Effective spacious work areas, providing one to two cars while unloading and cleaning as needed. Separation system: sieve spiral advancing direction of the bobbin inclination with the horizontal design, so that the material can be charged in a finite flip screening process and accept water jet cleaning and separation. Sub sand sedimentation pool overflow groove portion such that the height of the rational arrangement of sand and mud can be fully separated, and conveying auger housing wall asymmetric installation, the accumulation of a layer of material can effectively prevent wear, spiral lengthened, the material can be conveyed process to fully dehydrated. Gravel-time complete separation. Separation capacity may 0-30 t / h for the drainage system: system-wide adoption of the cleaning process cleaning cycle, so basically zero discharge of sewage, water recycling rate is high. Electronic control system: PLC control by the Japanese original, more powerful, more convenient maintenance, automatic process control, fault-wide display, alarm. Improve the overall stability and reliability, all control modules are mounted weatherproof switch box, fully automatic operation is easy to control and maintain. Operation is simple: set the mixer down to the parking spaces were added to the water to boil, after which the waste directly into the feed hopper Whey, from the hopper flows into separator cleaning, separation. The separation of gravel were sent to the port and a sand stone mouth. Overflow out of the water flowing through the drains sedimentation tank, and then withdraw from precipitation through three pumps, recycling, clean mixer takes about five minutes. Also different specifications can be manufactured according to the needs of the model.