Anti-blocking abrasive tank

The utility model discloses an anti-blocking abrasive tank which comprises an abrasive tank body, a plurality of sand washing nozzles arranged in the abrasive tank body and a plurality of concentration regulators arranged outside the abrasive tank body, and the plurality of sand washing nozzles and the plurality of concentration regulators are respectively and correspondingly connected with water replenishing assemblies used for replenishing water. Each water replenishing assembly comprises a water replenishing pump, a water replenishing valve and an annular main pipeline which are sequentially connected through a connecting pipeline, the sand washing nozzles and the concentration regulators are connected with the annular main pipelines in the corresponding water replenishing assemblies through shunt valves, and the annular main pipelines are provided with communicating ports corresponding to the shunt valves and communicating with the shunt valves. And the height of the communicating port on the annular main