The upper part is a tank. The clean water tank is equipped with a high-pressure water pump for 3 sides and 8 sides for the sewage tank. The high-pressure pump model: 3DS-8/16, GYB-8/16, pressure: 16-19Mpa, flow: 8m3/h, hose length: 60m, coiling force: 1800 N, hose inner diameter: φ19 mm, joint type: 0, coiling speed: 0-25m/min, hole clamping angle: 15°, 25°, thrust: ≥180 N