High-pressure water jet sheet strip sand-blasting descaling cleaning device, cleaning line and system

A high-pressure water jet sheet strip sand-blasting descaling cleaning system, comprising:

• at least one high-pressure water jet sheet strip sand-blasting descaling cleaning device, wherein the at least one high-pressure water jet sheet strip sand-blasting descaling cleaning device comprises a cleaning box, a washing box and descaling nozzles for jetting and cleaning a sheet strip, the washing box is arranged at an output end of the cleaning box, the descaling nozzles face to a same width direction of the sheet strip and are arranged in a gradient along a conveying direction of the cleaning box to jet the sheet strip in a covering manner, each of the descaling nozzles jets and diffuses on the sheet strip to form jet influence areas, each of the jet influence areas comprises a jet cleaning area which has a direct jet cleaning effect on the sheet strip, and one of the jet influence areas formed by a first descaling nozzle of the descaling nozzles earlier entering above the sheet strip is partially overlapped with the jet cleaning area formed by a second descaling nozzle of the descaling nozzles later entering above the sheet strip, and
• an abrasive collecting box, a high-pressure water supply system, an abrasive supply-recovery-separation system and a sewage recycling treatment system;
• wherein the high-pressure water supply system comprises a water purifying box and a high-pressure pump, one end of the high-pressure pump is connected with the water purifying box, and a second end of the high-pressure pump is connected with the descaling nozzles;
• the abrasive supply-recovery-separation system comprises an abrasive tank, an abrasive screening device, a hydraulic conveyer, an overflow collecting box and a hydrocyclone;
• the abrasive tank is positioned below the abrasive screening device, one end of the abrasive tank is connected with the abrasive screening device, and a second end of the abrasive tank is connected with the descaling nozzles;
• the cleaning box is positioned below the abrasive tank, and the abrasive collecting box is positioned below the sheet strip;
• the hydraulic conveyer is positioned below the abrasive collecting box, one end of the hydraulic conveyer is connected with the abrasive collecting box, and a second end of the hydraulic conveyer is connected with the abrasive screening device for sending collected abrasive back to the abrasive tank;
• the overflow collecting box is positioned at an output end of an overflow port of the cleaning box, a water inlet of the hydrocyclone is connected with the overflow collecting box through a slurry pump, an outlet at a lower part of the overflow collecting box is connected with the cleaning box to recover the abrasive, and a water outlet at an upper part of the overflow collecting box is connected with a sedimentation tank for discharging sewage;
• the sewage recycling treatment system comprises a sewage filter and the sedimentation tank, one end of the sewage filter is connected with the water purifying box, and a second end of the sewage filter is connected with the sedimentation tank.