Concrete Pump Practice

Concrete Pump Practice 1, pumped concrete should be a continuous operation; when forced to suspend because of the feed interruption, downtime must not exceed 30min. Should be suspended every time within 5 --- 10min (winter 3 --- 5min) for 2 - 3 strokes pump --- positive pump anti movement, feeding pumping again advised to feed mixing. When the pump stops time overrun, you should exhaust pipe. 2, two vertical upward after pumping pumping dasion 6×4 concrete mixer truck dimension interruption should reverse push the inner concrete sucked back into the hopper dispensing valve, stirred and then forward pumping. 3, when the pump-up operation, is strictly prohibited hand or shovel hand grip extends into the hopper or dispensing valve. When the need to work on the hopper or dispensing valve should be closed and the elimination of motor accumulator pressure. 4, not free to adjust the hydraulic system pressure. When the oil temperature exceeds 70 ℃, it should stop pumping, but should the stirring blades and fan operation, to be cool before continuing operation. 5, the storage tank should be filled with water, when water turbidity and when there are more sand, timely check processing. 6, when pumping, can not open any pipelines and hydraulic pipes; do not adjust, repair is running parts. 7, operations, respond to the pumping equipment and piping were observed, we found hidden in a timely manner should be. Tube wear exceeds a predetermined, clamps, seals, etc. should be replaced. 8, should prevent pipe blockage. Pumping sino dasion 8cbm-16cbm concrete mixer truck concrete should stir good control slump; during pumping, the pump may not stop midway. 9, when there duct blockage, should anti-pump operation, the concrete hopper return; when the anti-pump several times still can not eliminate clogging the pump should uninstall the case, to exclude demolition tube blockage. Concrete pump in special weather Construction Notes 1. Construction of the hot season, to use drop cloths wet, wet straw bags and other covering concrete pipes, avoid direct sunlight. 2. Construction of the cold season, it is appropriate insulation material encased concrete pipes, cold concrete to prevent the inner tube, and to ensure that the temperature of the concrete into the mold. 3. When the level of transmission distance of more than 200M, vertical transportation distance of more than 40m, the delivery tube vertically downward or horizontal pipes arranged in front chute, concrete mixture unit cement amount is less than 300kg / m3, to be a reasonable choice Piping and pumping craft, to use a large diameter concrete duct and a long tapered tube, less elbow and hose.     4. When transporting concrete pump height exceeds the maximum transmission distance available Relay pump (successor pump) pumped. Relay pump discharge horizontal tube length should comply with the regulations 6×4 dasion concrete mixer truck online sale of the provisions of section 5.2.4, and shall set up a capacity of about 1m3, with stirring hopper device. 5. should be checked regularly for wear especially elbows and other parts of the pipeline to pipe explosion.