PLM-AL is available in two versions. The   PLM-AL SMP is equipped with the continuous mixing pump m-tec SMP, machine of proven performances and reliability.

Also the PLM-AL L2 works continuously. However, the mixing occurs in a large stainless steel double helical ribbon mixer. The water quantity is set by means of a flowmeter to reach the desired flow. In this way the W/C ratio is kept constant.

The mixer is on load cells. The weight thresholds setting controls the plant operation. At the beginning of the job, the water and the cement enter into the mixer in the set ratio. When the weight reaches the lowest threshold, the mortar pump starts to run. The material weight in the mixer keeps increasing up to the maximum threshold. At this point the screws and the water pump stop, while the mortar pump continues to run. The material feeding starts again when the weight reaches an intermediate threshold, let’s say “working weight” and stop when the max weight is reached again. In this way there are always about 800 – 900 kg of material in the mixer, that continue to be mixed, with a retention time of approx. 5 minutes, while the mortar pump keeps working. If for any reason, the feeding of dry material stops, the pump works until the minimum threshold is reached and then stop, prevent the dry running.

The advantage of this large mixing chamber is given by the longer and more efficient mixing, which ensures a higher homogeneity and gives to the admixtures more time to perform their effect. Particularly remarkable is that the desired flow is reached with a much lower water content. thus increasing the quality of the final product with less cracking and curling problem and higher strength.

If needed, the plant can control a further liquid admixture.

PLM-AL L2 can be equipped with the automatic dosing system for plastic fibers.

• Dry mortar silos 19 m³ with couplings for pneumatic blowing and air filter
• Conveying screws
• Hydraulic power unit
• Stainless steel mixing trough 500 liters on two load cells
• Stainless steel double helicon ribbon shaft
• Stainless steel water tank, 500 liters
• Water pump 200 l/min
• Progressive cavity mortar pump 100 l/min (standard scope of supply, other pumps can be installed
• Control cabinet with touch screen panel and USB port
• Remote control
• High pressure water cleaner
• Electrically driven hose drum with 60 meters mortar hose DN50
• Ancillary air compressor
• Electric power generator 30 KVA