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Concrete pumping process steps
Haomei machinery is the key of large-scale machinery company, the company strength is abundant, deeply the general customers the support industry for many years.Today, we have to the concrete pumping process, the technological process and main points in the three aspects:
1. The pumping concrete, first of all, put in the storage hopper water out of the pipeline pump, in order to achieve the purpose of lubricating and cleaning pipe, and then join the same as the ratio of concrete in the hopper within the cement mortar (or 1:2 cement mortar), start pumping concrete after lubrication piping.Started pumping, pumping speed should be slow down, oil change should be within the scope of the permit, for pumping well, just pumping in normal speed.
2. During the period of pumping, the concrete content of the inside the hopper should be keep on not less than cylinder TongKou between 10 mm to 150 mm from under the feeder is advisable.Pumping, if inhaled efficiency is low, easy to inhale air caused by pipe and absorb too much while the smoke will overflow and increase the load of stirring shaft.Concrete pumping appropriate continuous operation, when the concrete supply less, the need to reduce the pumping speed;Pumping suspended, stirring should not stop;When the blade is stuck, it is necessary to reverse, forward and reverse time again, can continue to pump after forward smoothly.
3. If pumping halfway down time for more than 20 min, pipes, and a long, should every 5 min drive pump;Pumping and small concrete pipe is quite short, every 5 min and reversing can be used 2 to 3 trips, make the pipe concrete creep, prevent bleeding segregation;Stop the pump for a long time (more than 45 min) and the temperature is high, the hours, the concrete slump may cause tube and concrete should be clear from the pump and pipeline.Pumping concrete appropriate far before they close, gradually down the tube in the casting.Pumping in high temperature season, appropriate temperature with straw bag cover cooling pipe, in order to reduce the mold temperature.Pumping pipe level conversion distance sum be less than the maximum pumping equipment.